CN104548215A - Coating for intervention catheter, preparation method of coating, and intervention catheter - Google Patents
Coating for intervention catheter, preparation method of coating, and intervention catheter Download PDFInfo
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- CN104548215A CN104548215A CN201510037542.0A CN201510037542A CN104548215A CN 104548215 A CN104548215 A CN 104548215A CN 201510037542 A CN201510037542 A CN 201510037542A CN 104548215 A CN104548215 A CN 104548215A
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Abstract
The invention discloses a coating for an intervention catheter, a preparation method of the coating, and the intervention catheter. The coating comprises a base coating and a top coating, wherein the base coating contains glycidyl polyacrylate, side carboxyl-containing polyurethane and an organic solvent; in the base coating, the mass ratio of the side carboxyl-containing polyurethane to the glycidyl polyacrylate is 1 to (0.1-1); the mass of the organic solvent is 80wt% to 99wt% of the total mass of the base coating; the top coating contains polymethyl vinyl ether-maleic anhydride, side carboxyl-containing polyurethane and the organic solvent; in the top coating, the mass ratio of the side carboxyl-containing polyurethane to the polymethyl vinyl ether-maleic anhydride is 1:(0.1-10); the mass of the organic solvent is 80wt% to 99wt% of the total mass of the top coating. The coating disclosed by the invention is coated on the intervention catheter to obtain a coating which is excellent in wear resistance and hydrophilic performance.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to a kind of interposing catheter coating, this coating preparation method and be coated with the interposing catheter of this coating.
Background technology
Endovascular Interventions technology is widely used in the aspects such as the removing of clinical vascular radiography, angioplasty, Intravascular Thrombus or foreign body.Compared with traditional medical skill, Endovascular Interventions technology is not only easy to operate, and due to the wound of interventional therapy low, can alleviate the misery of patient, Operative risk is less, and medical expense is also relatively low, therefore, this technology obtains at medical domain and promotes widely and use.Endovascular Interventions technology arrives diseased region far away in body by means of interposing catheter, as vascular sites such as coronary artery, and the diagnosis and treatment agent or insert apparatus, to reach the object to realizing diagnosis and minimally-invasive treatment in body compared with distal part position of reinjecting.Research of Intravascular Catheterization (hereinafter referred to as interposing catheter) is one of main tool of endovascular temporary embolization, comprise radiography interposing catheter, drug conveying interposing catheter, angioplasty interposing catheter etc., these interposing catheters should have excellent operability and safety, general need it to have excellent blood compatibility, excellent lubricity, certain blood property of softening, ooze out without nuisance, excellent kink resistance, excellent mechanical performance, good machinability, and X-ray opacifying agent there is the performances such as the good compatibility.
Lubricity is one of very important performance of interposing catheter.When interposing catheter is when entering, exiting blood vessel and move in the blood vessel, high-lubricity can suppress macromole in blood if plasma protein, platelet etc. are in the adhesion of material surface, reduce the damage to blood vessel wall and hemocyte, alleviate the disturbance dynamic to blood laminar flow, the generation of Coagulation test can be avoided simultaneously.Therefore, surface lubrication process is carried out to interposing catheter very necessary.Coating hydrophilic coating is the effective means improving interposing catheter greasy property.
Because interposing catheter will carry out moving and stopping certain hour in vivo, therefore, the hydrophilic coating on interposing catheter, except meeting high hydrophilic lubrication performance, also will meet fastness and stability, namely coating will not come off after standing repeatedly to rub, and maintains good combination property.Usually means can play certain fixation to hydrophilic compounds to utilize covalent bond to connect or crosslinked etc., and this type of technology is also widely used gradually.In the coating system that chemical reaction solidification occurs, according to whether participating in reaction, hydrophilic compounds can be divided into response type and non-reactive again, such as polyvinyl pyrrolidone (PVP), polyethylene glycol oxide (PEO) are non-reactive, and the copolymer etc. of acrylic acid, maleic anhydride class is response type.
Early stage hydrophilic coating system does not adopt chemical reaction mostly when solidifying, such as US Patent No. 4589873, US4835003, US5331027, US5509899, US5620738 and US6042876 all disclose the hydrophilic coating containing PVP, the feature of this type coating is, top layer is coated with PVP, but all do not introduce cross-linked structure in whole coating, PVP easily comes off after imbibition, and whole coating system can be made to lose the effect of hydrophilic lubrication.
US Patent No. 8287890B2, US6299980B1, US5776611, US5179174, all disclose in US5160790 and US4666437 with isocyanate crosslinking is base coat, the coating system of the hydrophilic high mols such as top layer coating PVP or PEO, the feature of this type coating is, except containing except hydrophilic high mol in top coat, also add can with the polyhydric alcohol of bottom isocyanate crosslinking generation cross-linking reaction or polyamine, therefore, serve certain fixation, but due to the cross-linking reaction in PVP or PEO not participation system, through friction after imbibition, still be easy to come off from coated substrate.
Can see, relative to the hydrophilic high mol of non-reactive, the hydrophilic high mol of response type has better coating fastness, but and be not all closely interconnected between other components in coating, and whole coating lacks enough adhesive force for interposing catheter, still there is the problem of wearability deficiency, therefore, need new technological means to obtain the coating of more dominance energy to meet the requirement of intervention apparatus.
Summary of the invention
The invention provides a kind of interposing catheter coating and preparation method thereof and interposing catheter, efficiently solve the problem of interposing catheter surface hydrophilic coating fastness deficiency.
For achieving the above object, the present invention adopts following technical scheme:
A kind of interposing catheter coating, described coating comprises subbing and top layer coating;
Described subbing comprises polyglycidyl acrylate, containing side carboxyl polyurethane and organic solvent;
In described subbing, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of described subbing gross mass;
Described top layer coating comprises polymethyl vinyl ether-maleic anhydride, containing side carboxyl polyurethane and organic solvent;
In described top layer coating, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of described top layer coating gross mass.
Wherein in an embodiment, obtaining through additive reaction by polyether/polyester dihydroxylic alcohols, vulcabond, 2,2-dihydromethyl propionic acids and BDO containing the side carboxyl polyurethane that contains in side carboxyl polyurethane and described subbing in described top layer coating;
Described polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol, polytetrahydrofuran diol, PCDL and pla-pcl glycol, and the molecular weight of described polyether/polyester dihydroxylic alcohols is 1000 ~ 4000;
Described vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates and isoflurane chalcone diisocyanate.
Wherein in an embodiment, organic solvent in described top layer coating and the organic solvent in described subbing are all selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
A preparation method for interposing catheter coating, comprises the following steps:
Prepare subbing: will join in container containing side carboxyl polyurethane, polyglycidyl acrylate and organic solvent, and at room temperature stir 20min ~ 60min, obtain subbing; In described subbing, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of described subbing gross mass;
Prepare top layer coating: will join in container containing side carboxyl polyurethane, polymethyl vinyl ether-maleic anhydride and organic solvent, and at room temperature stir 20min ~ 60min, obtain top layer coating; In described top layer coating, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of described top layer coating gross mass.
Wherein in an embodiment, before the described subbing of preparation and described top layer coating, further comprising the steps of:
Adopt solvent method synthesis containing side carboxyl polyurethane: to add in reactor by polyether/polyester dihydroxylic alcohols and vulcabond, be warming up to 60 DEG C ~ 90 DEG C, after stirring 1h ~ 3h, obtain performed polymer; In described reactor, add 2,2-dihydromethyl propionic acid and BDO, after reaction 0.5h ~ 2h, add N,N-dimethylacetamide, continue reaction 0.5h ~ 2h, then add dibutyl tin laurate, reaction 10h ~ 15h, is then down to room temperature; Being poured into by solution in described reaction vessel is equipped with in the container of deionized water, separates out precipitate, collects described precipitate also with dry after deionized water wash several times; By dried product pelletize, obtain containing side carboxyl polyurethane.
Wherein in an embodiment, the ratio of total amount of substance of the amount of substance of described vulcabond and described polyether/polyester dihydroxylic alcohols, described 2,2-dihydromethyl propionic acids and described BDO is (1.05 ~ 1.2): 1;
The amount of substance of described 2,2-dihydromethyl propionic acids is 1:(0.9 ~ 1.1 with the ratio of the amount of substance of described BDO);
The ratio of the gross mass of the quality of described polyether/polyester dihydroxylic alcohols and described vulcabond, described 2,2-dihydromethyl propionic acids and described BDO is (1.5 ~ 1): 1.
Wherein in an embodiment, the quality of described N,N-dimethylacetamide is 4:(0.9 ~ 1.1 with the ratio of the gross mass of other reaction raw materials);
The quality of described dibutyl tin laurate is 0.9% ~ 1.1% of described polyether/polyester dihydroxylic alcohols quality.
Wherein in an embodiment, described polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol, polytetrahydrofuran diol, PCDL, pla-pcl glycol, and the molecular weight of described polyether/polyester dihydroxylic alcohols is 1000 ~ 4000;
Described vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates, isoflurane chalcone diisocyanate.
Wherein in an embodiment, before the described subbing of preparation and described top layer coating, further comprising the steps of:
Prepare polyglycidyl acrylate: add in reactor by glycidyl acrylate and dioxane, be warming up to 60 DEG C ~ 90 DEG C, stir 20min ~ 60min, add benzoyl peroxide again, reaction 10h ~ 15h, pours into the solution in reactor and is equipped with in the container of normal hexane, separates out white depositions, collect described white depositions and with dry after n-hexane several times, obtain polyglycidyl acrylate.
Wherein in an embodiment, the quality of described dioxane is 3.5 times ~ 4.5 times of described glycidyl acrylate quality;
The quality of described benzoyl peroxide is 0.9% ~ 1.1% of described glycidyl acrylate quality.
Wherein in an embodiment, organic solvent in described top layer coating and the organic solvent in described subbing are all selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
A kind of interposing catheter, described interposing catheter surface-coated has described interposing catheter coating.
Beneficial effect of the present invention is as follows:
(1) compared with prior art, the present invention efficiently solves the problem of interposing catheter surface hydrophilic coating fastness deficiency.Two layer coating system can be formed after paint of the present invention to interposing catheter surface and (after subbing solidification, form base coat, Topcoating is formed) after top layer paint solidification, in this two layer coating system, many components cross-linked structure is formed in the chemical reaction mode of anhydride, epoxy and hydroxy-acid group, make coating both have hydrophilic lubrication performance, there is again excellent anti-wear performance.
After coating of the present invention is used for interposing catheter, the frictional force that interposing catheter can be made suffered in water environment reduces by more than 90%; And coating still can keep complete after rubbing action repeatedly, frictional force increasing degree suffered in water environment is no more than 5%.
(2) comprise in coating of the present invention containing side carboxyl polyurethane and polyglycidyl acrylate, compensate for the deficiency of the performance of traditional interposing catheter coating used, avoid the macromolecular material and cross-linking agent Problems existing that use in other open reports, there is more outstanding practical application effect.
(3) coating provided by the present invention can be medical introducing duct and provides firmly hydrophilic lubrication performance, the scope of application is wider, be particularly useful for Endovascular Interventions technical field, the medical apparatus and instruments that can be used for comprises seal wire, foley's tube, guiding catheter, thrombus suction catheter, peripheral central venous catheter, angiography catheter, dilating catheter and tears sheath etc.
Detailed description of the invention
In order to make technical scheme of the present invention and advantage clearly understand, below in conjunction with specific embodiment, the present invention is further elaborated.
The invention provides a kind of interposing catheter coating, can form on interposing catheter surface the double-deck cross-linked coating structure that greasy property is good, anti-wear performance is excellent.Coating of the present invention is applicable to multiple interposing catheter base material, is particularly useful for the macromolecular material base material being difficult to bond, as ethylene-tetrafluoroethylene copolymer, hexafluoropropene-TFE copolymer, polypropylene, polyethylene etc.
Interposing catheter coating of the present invention comprises subbing and top layer coating.Wherein, subbing comprises polyglycidyl acrylate, containing side carboxyl polyurethane and organic solvent; Top layer coating comprises polymethyl vinyl ether-maleic anhydride, containing side carboxyl polyurethane and organic solvent.
In above-mentioned subbing, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of subbing gross mass; In above-mentioned top layer coating, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of top layer coating gross mass.
By application of paints of the present invention in interposing catheter time, first subbing is coated to the surface of interposing catheter in the mode of dip-coating, spraying or brushing, at 40 DEG C ~ 80 DEG C, solidifies 20min ~ 60min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 50 DEG C ~ 80 DEG C, solidify 40min ~ 90min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating.
In order to make interposing catheter, there is better hydrophilicity, also need to carry out hydrophilic treated to cross-linked structure coating, the interposing catheter being coated with cross-linked structure coating by outer surface is immersed in strong aqua ammonia, at room temperature soak 30min ~ 90min, after taking-up at 40 DEG C ~ 80 DEG C dry 1h ~ 3h, the interposing catheter that surface has excellent hydrophilic lubrication performance can be obtained.Wherein, strong aqua ammonia is commercial chemicals, and concentration is 22% to 30%.
It should be noted that, top layer coating can be identical with the organic solvent comprised in subbing, also can be different.As a kind of embodiment, organic solvent in top layer coating and the organic solvent in subbing all can be selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
In above-mentioned interposing catheter coating, one of effect containing side carboxyl polyurethane makes Topcoating for coordinating polyglycidyl acrylate, forms the cross-linked structure of many components between base coat and interposing catheter, increase Topcoating and base coat and the fastness between base coat and interposing catheter, and then increase the anti-wear performance of coating.Preferably, obtaining through additive reaction by polyether/polyester dihydroxylic alcohols, vulcabond, 2,2-dihydromethyl propionic acids and BDO containing side carboxyl polyurethane in base coat and Topcoating.Wherein, polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol, polytetrahydrofuran diol, PCDL and pla-pcl glycol, and the molecular weight of polyether/polyester dihydroxylic alcohols is 1000 ~ 4000; Vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates and isoflurane chalcone diisocyanate.
Because high hydrophilic lubrication performance needs coating outer surface to possess a large amount of hydrophilic groups, and if hydrophilic polymer too high levels in system, then the fastness of film forming matter is inevitable poor.After paint of the present invention to interposing catheter surface, double-deck cross-linked coating structure can be formed and (after subbing solidification, form base coat, Topcoating is formed) after top layer paint solidification, this double-deck cross-linked coating structure had both served the effect of hydrophilic lubrication, in turn ensure that combining closely between firm attachment bottom coating and between interposing catheter and coating, improve the crocking resistance of coating.Be explained as follows further:
In top layer coating, there is hydrophilic polymer polymethyl vinyl ether-maleic anhydride and contain side carboxyl polyurethane; In subbing, comprise and have containing side carboxyl polyurethane and the intermediate medium polyglycidyl acrylate of Topcoating and base coat can being connected of better adhesive force with interposing catheter.Polymethyl vinyl ether-copolymer-maleic anhydride and polyglycidyl acrylate can be easy to form cross-linking products, and therefore, the polyglycidyl acrylate in subbing can be combined by the hydrophilic polymer in top layer coating securely; Meanwhile, polyglycidyl acrylate epoxy group group can react with the side carboxyl polyurethane that contains in top layer coating and subbing, defines the cross-linked structure of many components; In addition, the adhesive force that can strengthen itself and interposing catheter surface containing the carboxyl of side carboxyl polyurethane in subbing.Therefore, compared with the coating that traditional interposing catheter is used, utilize the coating prepared by coating of the present invention to have more excellent hydrophilic and wearability.
In addition, interposing catheter coating of the present invention compensate for the deficiency of the performance of traditional interposing catheter coating used, avoid the macromolecular material and cross-linking agent Problems existing (such as, compound poor to the tack of interposing catheter base material exists the problems such as toxicity) that use in other open reports, there is more outstanding practical application effect.
Meanwhile, present invention also offers a kind of interposing catheter, this interposing catheter surface-coated has above-mentioned interposing catheter coating.Due to the intervention existence of conduit coating, this interposing catheter is made to have excellent lubricity and wearability.
In addition, present invention also offers a kind of preparation method of interposing catheter coating, comprise the following steps:
Prepare subbing: will join in container containing side carboxyl polyurethane, polyglycidyl acrylate and organic solvent, and at room temperature stir 20min ~ 60min, obtain subbing; In the subbing obtained, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of subbing gross mass.
Prepare top layer coating: will join in container containing side carboxyl polyurethane, polymethyl vinyl ether-maleic anhydride and organic solvent, and at room temperature stir 20min ~ 60min, obtain top layer coating; In the top layer coating obtained, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of top layer coating gross mass.
In the preparation process of top layer coating and subbing, the organic solvent used all is selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
As a kind of embodiment, in the preparation process of top layer coating and subbing, what use adopts solvent method synthesis containing side carboxyl polyurethane, and concrete building-up process is as follows:
Polyether/polyester dihydroxylic alcohols and vulcabond are added in reactor, is warming up to 60 DEG C ~ 90 DEG C, after stirring 1h ~ 3h, obtain performed polymer; Add 2,2-dihydromethyl propionic acid and BDO in the reactor, after reaction 0.5h ~ 2h, add N,N-dimethylacetamide, continue reaction 0.5h ~ 2h, then add dibutyl tin laurate, reaction 10h ~ 15h, is then down to room temperature; Being poured into by solution in reaction vessel is equipped with in the container of deionized water, separates out precipitate, and collecting precipitation thing is also dry afterwards with deionized water wash several times (being preferably 3 times); By dried product pelletize, obtain containing side carboxyl polyurethane.
In order to guarantee to obtain required product, avoid raw-material waste simultaneously, above-mentioned preparation is containing in the process of side carboxyl polyurethane, quantitative relationship between each compound used is: the amount of substance of vulcabond and polyether/polyester dihydroxylic alcohols, 2,2-dihydromethyl propionic acid and 1, the ratio of total amount of substance of 4-butanediol is (1.05 ~ 1.2): 1, i.e. n
1: (n
2+ n
3+ n
4)=(1.05 ~ 1.2): 1, wherein, n
1for the amount of substance of vulcabond, n
2for the amount of substance of polyether/polyester dihydroxylic alcohols, n
3be the amount of substance of 2,2-dihydromethyl propionic acid, n
4for the amount of substance of BDO; The amount of substance of 2,2-dihydromethyl propionic acid is 1:(0.9 ~ 1.1 with the ratio of the amount of substance of BDO); The ratio of the gross mass of the quality of polyether/polyester dihydroxylic alcohols and vulcabond, 2,2-dihydromethyl propionic acids and BDO is (1.5 ~ 1): 1, i.e. m
1: (m
2+ m
3+ m
4)=(1.05 ~ 1.2): 1, wherein, m
1for the quality of polyether/polyester dihydroxylic alcohols, m
2for the quality of vulcabond, m
3be the quality of 2,2-dihydromethyl propionic acid, m
4for the quality of BDO; The quality of N,N-dimethylacetamide is 4:(0.9 ~ 1.1 with the ratio of the gross mass of other reaction raw materials); The quality of dibutyl tin laurate is 0.9% ~ 1.1% of polyether/polyester dihydroxylic alcohols quality.
Preferably, above-mentioned preparation is containing in the process of side carboxyl polyurethane, and the quality of deionized water used during precipitation and the mass ratio of N,N-dimethylacetamide are 2:(0.9 ~ 1.1); During each washing, the quality of deionized water used and the mass ratio of N,N-dimethylacetamide are 2:(0.9 ~ 1.1).
It should be noted that, above-mentioned " gross masses of other reaction raw materials " refer to containing side carboxyl polyurethane preparation process in, the polyether/polyester dihydroxylic alcohols used, vulcabond, 2,2-dihydromethyl propionic acids and BDO gross mass.
Preferably, above-mentioned preparation is containing in the process of side carboxyl polyurethane, the polyether/polyester dihydroxylic alcohols used is polyoxypropyleneglycol, one in polytetrahydrofuran diol, PCDL and pla-pcl glycol, and the molecular weight of polyether/polyester dihydroxylic alcohols is 1000 ~ 4000; Vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates and isoflurane chalcone diisocyanate.
As a kind of embodiment, in the preparation process of subbing, the polyglycidyl acrylate used is adopted and is prepared with the following method:
Glycidyl acrylate and dioxane are added in reactor, be warming up to 60 DEG C ~ 90 DEG C, stir 20min ~ 60min, add benzoyl peroxide again, reaction 10h ~ 15h, pours into the solution in reactor and is equipped with in the container of normal hexane, separates out white depositions, collect white depositions and with n-hexane several times (being preferably 3 times) drying afterwards, obtain polyglycidyl acrylate.
In order to guarantee to obtain required product, avoid raw-material waste, in the preparation process of above-mentioned polyglycidyl acrylate, the quality of dioxane is 3.5 times ~ 4.5 times of glycidyl acrylate quality simultaneously; The quality of benzoyl peroxide is 0.9% ~ 1.1% of glycidyl acrylate quality; The quality of normal hexane used during precipitation is 1.5 times ~ 2.5 times of dioxane quality; The quality of normal hexane used during each washing is 1.5 times ~ 2.5 times of dioxane quality.
It should be noted that, be also prepared by existing additive method containing side carboxyl polyurethane and polyglycidyl acrylate.
Utilize the preparation method of interposing catheter coating of the present invention, can prepare and there is excellent hydrophilic and the coating of wearability.This coating can be medical introducing duct and provides firmly hydrophilic lubrication performance, the scope of application is wider, be particularly useful for Endovascular Interventions technical field, the medical apparatus and instruments that can be used for comprises seal wire, foley's tube, guiding catheter, thrombus suction catheter, peripheral central venous catheter, angiography catheter, dilating catheter and tears sheath etc.
Meanwhile, the present invention can prepare excellent performance containing side carboxyl polyurethane and polyglycidyl acrylate, provide reliable foundation for the many components between coating and between coating and interposing catheter surface are crosslinked.
Below by specific embodiment, interposing catheter coating of the present invention and preparation method thereof and interposing catheter are described further.
Prepare embodiment
Preparation is containing side carboxyl polyurethane (PU):
Polyether/polyester dihydroxylic alcohols and vulcabond are added in reactor, is warming up to 60 DEG C ~ 90 DEG C, after stirring 1h ~ 3h, obtain performed polymer; Add 2,2-dihydromethyl propionic acid and BDO in the reactor, after reaction 0.5h ~ 2h, add N,N-dimethylacetamide, continue reaction 0.5h ~ 2h, then add dibutyl tin laurate, reaction 10h ~ 15h, is then down to room temperature; Being poured into by solution in reaction vessel is equipped with in the container of deionized water, separate out white depositions, collect white depositions and with after deionized water wash several times, be positioned in vacuum drying oven, vacuum drying 24h ~ 48h at 60 DEG C ~ 90 DEG C, obtains transparent cake product; To obtain after this transparent cake product pelletize containing side carboxyl polyurethane masterbatch.
Wherein, the ratio of the amount of substance of vulcabond and total amount of substance of polyether/polyester dihydroxylic alcohols, 2,2-dihydromethyl propionic acids and BDO is F-a; The ratio of the gross mass of the quality of polyether/polyester dihydroxylic alcohols and vulcabond, 2,2-dihydromethyl propionic acids and BDO is F-b; The amount of substance of 2,2-dihydromethyl propionic acid is 1:1 with the ratio of the amount of substance of BDO; The quality of N,N-dimethylacetamide and polyether/polyester dihydroxylic alcohols, vulcabond, 2,2-dihydromethyl propionic acids and BDO the ratio of gross mass be 4:1; The quality of dibutyl tin laurate is 1% of polyether/polyester dihydroxylic alcohols quality; The quality of deionized water used during precipitation and the mass ratio of N,N-dimethylacetamide are 2:1; During each washing, the quality of deionized water used and the mass ratio of N,N-dimethylacetamide are 2:1.
Above-mentioned containing in the preparation process of side carboxyl polyurethane (PU), polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol (PPG), polytetrahydrofuran diol (PTMG), PCDL (PCDL) and pla-pcl glycol (PCL), and the molecular weight of polyether/polyester dihydroxylic alcohols (Mn) is 1000 ~ 4000; Vulcabond is 2,4-toluene di-isocyanate(TDI) (TDI), hexa-methylene 1, one in 6-vulcabond (HDI), 4,4'-methyl diphenylene diisocyanates (MDI) and isoflurane chalcone diisocyanate (IPDI).
The code name, the proportioning raw materials that respectively contain side carboxyl polyurethane product are as shown in table 1.By being respectively processed into sheet material containing side carboxyl melt polyurethane, testing its water contact angle, can find that its contact angle is all lower, illustrative material surface is containing carboxyl.
Table 1 contains raw material and the consumption of side carboxyl polyurethane
Prepare polyglycidyl acrylate:
Polyglycidyl acrylate sample 1: 10g glycidyl acrylate and 40g dioxane are added in reactor, be warming up to 70 DEG C, stir 30min, add 0.1g benzoyl peroxide again, reaction 12h, solution in reactor is poured in the container that 80g normal hexane is housed, separate out white depositions; Collect white depositions and after using 80g n-hexane 3 times respectively, be placed in vacuum drying oven, vacuum drying 48h at 60 DEG C, obtains pulverous polyglycidyl acrylate.
Polyglycidyl acrylate sample 2: 10g glycidyl acrylate and 35g dioxane are added in reactor, be warming up to 60 DEG C, stir 60min, add 0.09g benzoyl peroxide again, reaction 10h, solution in reactor is poured in the container that 87.5g normal hexane is housed, separate out white depositions; Collect white depositions and after using 87.5g n-hexane 4 times respectively, be placed in vacuum drying oven, vacuum drying 40h at 70 DEG C, obtains pulverous polyglycidyl acrylate.
Polyglycidyl acrylate sample 3: 10g glycidyl acrylate and 45g dioxane are added in reactor, be warming up to 90 DEG C, stir 20min, add 0.11g benzoyl peroxide again, reaction 15h, solution in reactor is poured in the container that 67.5g normal hexane is housed, separate out white depositions; Collect white depositions and after using 67.5g n-hexane 2 times respectively, be placed in vacuum drying oven, vacuum drying 36h at 80 DEG C, obtains pulverous polyglycidyl acrylate.
Following examples 1 ~ 11 all adopt prepare to prepare in embodiment containing side carboxyl polyurethane and polyglycidyl acrylate as reaction raw materials.
Embodiment 1
S100: will be added in container containing side carboxyl polyurethane PU-1, polyglycidyl acrylate sample 1 and N,N-dimethylacetamide, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-1 and polyglycidyl acrylate is 1:0.1, and N,N-dimethylacetamide quality is the 95wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-1, polymethyl vinyl ether-maleic anhydride and ethyl acetate, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-1 and polymethyl vinyl ether-maleic anhydride is 1:8, and ethyl acetate is the 90wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
Lubricity is tested: the preparation carrying out coating in the half length of interposing catheter through said method, and second half length does not process.Interposing catheter one end is vertically fixed in the lower clamp of stretching-machine, and at interposing catheter surface clamping self-control slide block, this slide block can be screwed on interposing catheter and also give interposing catheter fixing pressure by inner rubber ring, the inner interlayer of slide block can carry the deionized water of certain volume, can implement to infiltrate continuously to conduit; With the upper clamp clamping slide block being connected with mechanics sensor in stretching-machine, slide block is pulled to interposing catheter top from interposing catheter bottom according to fixed speed, then the stressed change of sensor embodies the frictional force that interposing catheter is subject on two kinds of surfaces, and the difference of friction value reflects the Hydrophilic lubrication of interposing catheter.The friction value of record corresponding to two parts centre of surface position, the amplitude of coating frictional force reduction then can be obtained: fp-r=(Fpr2-Fpr1)/Fpr2 × 100% by following formula, wherein, fp-r is the amplitude that coating frictional force reduces, Fpr1 is the stress value having coating layer portion, and Fpr2 is the stress value without coating layer portion; Fp-r value is larger, and the lubricity of coating is better.
Wearability test: the method on interposing catheter in the present embodiment carries out the preparation of coating, then this interposing catheter is loaded on equipment used in lubricity method of testing, slide block up-and-down movement 100 times under fixing displacement and fixed speed is made by programme-control, record start and friction value when stopping, the difference of this friction value reflects the degree and wearability thereof that coating abrasion comes off.The amplitude that frictional force when stopping increases is fp-i, and fp-i value is less, and the wearability of coating is better.Fp-i=(Fpi2-Fpi1)/Fpi1 × 100%, wherein, the stressed numerical value in interposing catheter centre position when Fpi1 is initial, the stressed numerical value in interposing catheter centre position when Fpi2 is termination.
Test result shows, after the interposing catheter in the present embodiment prepares coating, friction reduces amplitude fp-r higher than 90%, illustrates that coating has excellent greasy property; The increase amplitude applying cated interposing catheter friction after friction, lower than 5%, illustrates that coating has excellent crocking resistance.
Embodiment 2
S100: will be added in container containing side carboxyl polyurethane PU-2, polyglycidyl acrylate sample 1 and oxolane, and at room temperature stir 20min, obtain subbing.In subbing, the mass ratio of PU-2 and polyglycidyl acrylate is 1:0.2, and oxolane quality is the 80wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-2, polymethyl vinyl ether-maleic anhydride and dichloromethane, and at room temperature stir 20min, obtain top layer coating.In top layer coating, the mass ratio of PU-2 and polymethyl vinyl ether-maleic anhydride is 1:10, and dichloromethane is the 99wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 40 DEG C, solidifies 60min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 50 DEG C, solidify 60min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 30min, after taking-up at 40 DEG C dry 3h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 3
S100: will be added in container containing side carboxyl polyurethane PU-3, polyglycidyl acrylate sample 2 and N-Methyl pyrrolidone, and at room temperature stir 60min, obtain subbing.In subbing, the mass ratio of PU-3 and polyglycidyl acrylate is 1:0.3, and N-Methyl pyrrolidone quality is the 85wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-3, polymethyl vinyl ether-maleic anhydride and acetone, and at room temperature stir 60min, obtain top layer coating.In top layer coating, the mass ratio of PU-3 and polymethyl vinyl ether-maleic anhydride is 1:6, and acetone is the 93wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 80 DEG C, solidifies 20min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 90 DEG C, solidify 20min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 90min, after taking-up at 80 DEG C dry 1h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 4
S100: will be added in container containing side carboxyl polyurethane PU-4, polyglycidyl acrylate sample 2 and butanone, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-4 and polyglycidyl acrylate is 1:0.4, and butanone quality is the 90wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-4, polymethyl vinyl ether-maleic anhydride and N, N-dimethyl sulfoxide, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the 83wt% of the mass ratio of PU-4 and polymethyl vinyl ether-maleic anhydride to be 1:4, N, N-dimethyl sulfoxide be top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 5
S100: will be added in container containing side carboxyl polyurethane PU-5, polyglycidyl acrylate sample 2 and chloroform, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-5 and polyglycidyl acrylate is 1:0.5, and chloroform quality is the 98wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-5, polymethyl vinyl ether-maleic anhydride and butyl acetate, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-5 and polymethyl vinyl ether-maleic anhydride is 1:2, and the quality of butyl acetate is the 80wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 6
S100: will be added in container containing side carboxyl polyurethane PU-6, polyglycidyl acrylate sample 2 and N,N-dimethylacetamide, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-6 and polyglycidyl acrylate is 1:0.6, and N,N-dimethylacetamide quality is the 83wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-6, polymethyl vinyl ether-maleic anhydride and oxolane, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-6 and polymethyl vinyl ether-maleic anhydride is 1:0.8, and the quality of oxolane is the 86wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 7
S100: will be added in container containing side carboxyl polyurethane PU-7, polyglycidyl acrylate sample 3 and acetone, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-7 and polyglycidyl acrylate is 1:0.7, and the quality of acetone is the 99wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-7, polymethyl vinyl ether-maleic anhydride and DMF, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-7 and polymethyl vinyl ether-maleic anhydride is 1:0.5, and the quality of DMF is the 97wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 8
S100: will be added in container containing side carboxyl polyurethane PU-8, polyglycidyl acrylate sample 3 and N, N-dimethyl sulfoxide, and at room temperature stir 30min, obtain subbing.In subbing, the 93wt% of the mass ratio of PU-8 and polyglycidyl acrylate to be the quality of 1:0.8, N, N-dimethyl sulfoxide be subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-8, polymethyl vinyl ether-maleic anhydride and N, N-dimethyl sulfoxide, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the 88wt% of the mass ratio of PU-8 and polymethyl vinyl ether-maleic anhydride to be the quality of 1:0.1, N, N-dimethyl sulfoxide be top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 9
S100: will be added in container containing side carboxyl polyurethane PU-6, polyglycidyl acrylate sample 3 and chloroform, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-6 and polyglycidyl acrylate is 1:0.8, and the quality of chloroform is the 93wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-6, polymethyl vinyl ether-maleic anhydride and butyl acetate, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-6 and polymethyl vinyl ether-maleic anhydride is 1:0.3, and the quality of butyl acetate is the 95wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 10
S100: will be added in container containing side carboxyl polyurethane PU-4, polyglycidyl acrylate sample 3 and butanone, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-4 and polyglycidyl acrylate is 1:1, and the quality of butanone is the 97wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-4, polymethyl vinyl ether-maleic anhydride and ethyl acetate, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-4 and polymethyl vinyl ether-maleic anhydride is 1:9, and the quality of ethyl acetate is the 98wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
Embodiment 11
S100: will be added in container containing side carboxyl polyurethane PU-3, polyglycidyl acrylate sample 3, butanone and ethyl acetate, and at room temperature stir 30min, obtain subbing.In subbing, the mass ratio of PU-3 and polyglycidyl acrylate is 1:2, and the quality of butanone is the 65wt% of subbing gross mass, and the quality of ethyl acetate is the 30wt% of subbing gross mass.
S200: will be added in container containing side carboxyl polyurethane PU-3, polymethyl vinyl ether-maleic anhydride, butanone and ethyl acetate, and at room temperature stir 30min, obtain top layer coating.In top layer coating, the mass ratio of PU-3 and polymethyl vinyl ether-maleic anhydride is 1:9, and the quality of butanone is the 55wt% of top layer coating gross mass, and the quality of ethyl acetate is the 40wt% of top layer coating gross mass.Wherein, polymethyl vinyl ether-maleic anhydride is that Ritchie company difficult to understand of Sigma produces, and its number-average molecular weight is 80000.
The subbing obtained in S100 is coated to the surface of interposing catheter, at 60 DEG C, solidifies 30min; Afterwards top layer paint is extremely scribbled on the interposing catheter of subbing, at 80 DEG C, solidify 30min, obtain the interposing catheter that outer surface is coated with cross-linked structure coating; Again this interposing catheter is immersed in strong aqua ammonia, under room temperature, soaks 60min, after taking-up at 60 DEG C dry 2h, obtain the interposing catheter that surface has hydrophilic lubrication performance coating.
In the present embodiment, lubricity is identical with embodiment 1 with the method for testing of wearability, test result shows, apply cated interposing catheter friction in the present embodiment and reduce amplitude fp-r higher than 90%, after friction, the increase amplitude of friction is lower than 5%, possesses excellent lubricity and wearability.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (12)
1. an interposing catheter coating, is characterized in that, described coating comprises subbing and top layer coating;
Described subbing comprises polyglycidyl acrylate, containing side carboxyl polyurethane and organic solvent;
In described subbing, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of described subbing gross mass;
Described top layer coating comprises polymethyl vinyl ether-maleic anhydride, containing side carboxyl polyurethane and organic solvent;
In described top layer coating, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of described top layer coating gross mass.
2. interposing catheter coating according to claim 1, it is characterized in that, in described top layer coating containing in side carboxyl polyurethane and described subbing containing side carboxyl polyurethane by polyether/polyester dihydroxylic alcohols, vulcabond, 2,2-dihydromethyl propionic acid and BDO obtain through additive reaction;
Described polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol, polytetrahydrofuran diol, PCDL and pla-pcl glycol, and the molecular weight of described polyether/polyester dihydroxylic alcohols is 1000 ~ 4000;
Described vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates and isoflurane chalcone diisocyanate.
3. interposing catheter coating according to claim 1, it is characterized in that, organic solvent in described top layer coating and the organic solvent in described subbing are all selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
4. a preparation method for interposing catheter coating, is characterized in that, comprises the following steps:
Prepare subbing: will join in container containing side carboxyl polyurethane, polyglycidyl acrylate and organic solvent, and at room temperature stir 20min ~ 60min, obtain subbing; In described subbing, the mass ratio containing side carboxyl polyurethane and polyglycidyl acrylate is 1:(0.1 ~ 1), the quality of organic solvent is the 80wt% ~ 99wt% of described subbing gross mass;
Prepare top layer coating: will join in container containing side carboxyl polyurethane, polymethyl vinyl ether-maleic anhydride and organic solvent, and at room temperature stir 20min ~ 60min, obtain top layer coating; In described top layer coating, the mass ratio containing side carboxyl polyurethane and polymethyl vinyl ether-maleic anhydride is 1:(0.1 ~ 10), the quality of organic solvent is the 80wt% ~ 99wt% of described top layer coating gross mass.
5. preparation method according to claim 4, is characterized in that, before the described subbing of preparation and described top layer coating, further comprising the steps of:
Adopt solvent method synthesis containing side carboxyl polyurethane: to add in reactor by polyether/polyester dihydroxylic alcohols and vulcabond, be warming up to 60 DEG C ~ 90 DEG C, after stirring 1h ~ 3h, obtain performed polymer; In described reactor, add 2,2-dihydromethyl propionic acid and BDO, after reaction 0.5h ~ 2h, add N,N-dimethylacetamide, continue reaction 0.5h ~ 2h, then add dibutyl tin laurate, reaction 10h ~ 15h, is then down to room temperature; Being poured into by solution in described reaction vessel is equipped with in the container of deionized water, separates out precipitate, collects described precipitate also with dry after deionized water wash several times; By dried product pelletize, obtain containing side carboxyl polyurethane.
6. preparation method according to claim 5, it is characterized in that, the ratio of total amount of substance of the amount of substance of described vulcabond and described polyether/polyester dihydroxylic alcohols, described 2,2-dihydromethyl propionic acids and described BDO is (1.05 ~ 1.2): 1;
The amount of substance of described 2,2-dihydromethyl propionic acids is 1:(0.9 ~ 1.1 with the ratio of the amount of substance of described BDO);
The ratio of the gross mass of the quality of described polyether/polyester dihydroxylic alcohols and described vulcabond, described 2,2-dihydromethyl propionic acids and described BDO is (1.5 ~ 1): 1.
7. preparation method according to claim 5, is characterized in that, the quality of described N,N-dimethylacetamide is 4:(0.9 ~ 1.1 with the ratio of the gross mass of other reaction raw materials);
The quality of described dibutyl tin laurate is 0.9% ~ 1.1% of described polyether/polyester dihydroxylic alcohols quality.
8. preparation method according to claim 5, it is characterized in that, described polyether/polyester dihydroxylic alcohols is the one in polyoxypropyleneglycol, polytetrahydrofuran diol, PCDL, pla-pcl glycol, and the molecular weight of described polyether/polyester dihydroxylic alcohols is 1000 ~ 4000;
Described vulcabond is the one in 2,4 toluene diisocyanate, hexa-methylene 1,6-vulcabond, 4,4'-methyl diphenylene diisocyanates, isoflurane chalcone diisocyanate.
9. preparation method according to claim 4, is characterized in that, before the described subbing of preparation and described top layer coating, further comprising the steps of:
Prepare polyglycidyl acrylate: add in reactor by glycidyl acrylate and dioxane, be warming up to 60 DEG C ~ 90 DEG C, stir 20min ~ 60min, add benzoyl peroxide again, reaction 10h ~ 15h, pours into the solution in reactor and is equipped with in the container of normal hexane, separates out white depositions, collect described white depositions and with dry after n-hexane several times, obtain polyglycidyl acrylate.
10. preparation method according to claim 9, is characterized in that, the quality of described dioxane is 3.5 times ~ 4.5 times of described glycidyl acrylate quality;
The quality of described benzoyl peroxide is 0.9% ~ 1.1% of described glycidyl acrylate quality.
11. preparation methoies according to claim 4, it is characterized in that, organic solvent in described top layer coating and the organic solvent in described subbing are all selected from N, dinethylformamide, N, one or more in N-dimethyl acetylamide, N-Methyl pyrrolidone, N, N-dimethyl sulfoxide, ethyl acetate, butyl acetate, dichloromethane, chloroform, acetone, butanone and oxolane.
12. 1 kinds of interposing catheters, is characterized in that, described interposing catheter surface-coated is had the right the interposing catheter coating described in any one of requirement 1 ~ 3.
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| CN201510037542.0A CN104548215B (en) | 2014-09-23 | 2015-01-26 | Interposing catheter coating and preparation method thereof and interposing catheter |
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| CN110507864A (en) * | 2019-09-29 | 2019-11-29 | 佛山市其右医疗科技有限公司 | A kind of medical guiding wire with fine lubrication function |
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| CN104225687A (en) * | 2014-09-23 | 2014-12-24 | 北京迪玛克医药科技有限公司 | Paint for intervention duct and preparation method thereof, and intervention duct |
| CN105985720B (en) * | 2015-02-11 | 2018-02-16 | 北京迪玛克医药科技有限公司 | A kind of coating and its preparation and application of inierpeneirating network structure hydrophilic coating |
| CN105983139A (en) * | 2015-02-11 | 2016-10-05 | 北京迪玛克医药科技有限公司 | Method for manufacturing hydrophilic lubricating coating on surface of medical interventional catheter |
| CN105983140A (en) * | 2015-02-11 | 2016-10-05 | 北京迪玛克医药科技有限公司 | Coating for hydrophilic lubrication interventional catheter and preparation and application methods of coating |
| CN105985721B (en) * | 2015-02-11 | 2018-02-16 | 北京迪玛克医药科技有限公司 | A kind of coating and its preparation and application for forming catheter surface hydrophilic coating |
| CN106730247A (en) * | 2017-02-04 | 2017-05-31 | 成都鼎信致远科技有限公司 | A kind of blood vessel interposing catheter |
| CN107261297A (en) * | 2017-08-01 | 2017-10-20 | 郑州大学第附属医院 | The interposing catheter of multistage controlled deflection |
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| CN103948971A (en) * | 2014-03-20 | 2014-07-30 | 北京迪玛克医药科技有限公司 | Intervention catheter surface treatment method and intervention catheter |
| CN104225687A (en) * | 2014-09-23 | 2014-12-24 | 北京迪玛克医药科技有限公司 | Paint for intervention duct and preparation method thereof, and intervention duct |
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2014
- 2014-09-23 CN CN201410490162.8A patent/CN104225687A/en active Pending
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2015
- 2015-01-26 CN CN201510037542.0A patent/CN104548215B/en active Active
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| CN103948971A (en) * | 2014-03-20 | 2014-07-30 | 北京迪玛克医药科技有限公司 | Intervention catheter surface treatment method and intervention catheter |
| CN104225687A (en) * | 2014-09-23 | 2014-12-24 | 北京迪玛克医药科技有限公司 | Paint for intervention duct and preparation method thereof, and intervention duct |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110507864A (en) * | 2019-09-29 | 2019-11-29 | 佛山市其右医疗科技有限公司 | A kind of medical guiding wire with fine lubrication function |
| CN110507864B (en) * | 2019-09-29 | 2020-05-19 | 佛山市其右医疗科技有限公司 | Medical guide wire with excellent lubricating property |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104225687A (en) | 2014-12-24 |
| CN104548215B (en) | 2016-07-06 |
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