CN100398574C - Separating agent in acr in use for impact modifier, and method of use - Google Patents
Separating agent in acr in use for impact modifier, and method of use Download PDFInfo
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- CN100398574C CN100398574C CNB2005100443000A CN200510044300A CN100398574C CN 100398574 C CN100398574 C CN 100398574C CN B2005100443000 A CNB2005100443000 A CN B2005100443000A CN 200510044300 A CN200510044300 A CN 200510044300A CN 100398574 C CN100398574 C CN 100398574C
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- impact modifier
- impact
- acr
- methyl methacrylate
- release agent
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Abstract
This invention discloses a release agent for acrylate anti-impact modifier, which is prepared by emulsion polymerizaition of n-butyl methacrylate (0-10 wt. %) and methyl methacrylate (90-100 wt. %). The obtained release agent is used by adding into anti-impact modifier grafted emulsion by mechanical stirring. The addition amount of the release agent is 2-5 wt. % of acrylate anti-impact modifier. The release agent forms separating layer to remedy defects caused by incomplete graft and bad coating of anti-impact modifier shell after increasing anti-impact modifier to avoid blockage, solve the problems of easy blockage of pipelines during spray-drying process and difficulty in drying, increase amti-impact modifier core content to 80-90%, and improve impact strength of anti-impact modifier.
Description
Technical field
The invention belongs to polyvinyl chloride processing aid, particularly the acrylic ester impact-resisting modifier separant.
Background technology
The resistance to impact shock of the goods after polyvinyl chloride shapes is poor, and people have invented several different methods to improve the resistance to impact shock of polrvinyl chloride product.A wherein back method is added not double bond containing acrylic ester impact-resisting modifier exactly.
Acrylic ester impact-resisting modifier is the acrylate nucleoid-shell graft copolymer that obtains as shell by monomeric mixtures such as grafting methyl methacrylate, vinylbenzene, vinyl cyanide on lightly crosslinked acrylic ester elastomer.Be acrylic ester impact-resisting modifier ACR resin (hereinafter to be referred as anti-impact ACR).The nuclear of acrylate nucleoid-shell graft copolymer partly is acrylic ester elastomer.And the effective means that improves anti-impact ACR resistance to impact shock is for improving anti-impact ACR center portion, i.e. the content of acrylic ester elastomer.But the weight percent content of acrylic ester elastomer can not surpass 65% among the anti-impact ACR, and after 65%, the processibility of anti-impact ACR and powder fluidity variation can produce caking phenomenon when serious.And in anti-impact ACR preparation process, will cause the easy adhesion of anti-impact ACR particle, the spraying drying difficulty.
Summary of the invention
Technical problem to be solved by this invention provides a kind of acrylic ester impact-resisting modifier with separant and using method, it is the content of acrylic ester elastomer that the use of separant can improve impact modifier nuclear portion, and does not influence the processibility and the flowability of impact modifier.
Acrylic ester impact-resisting modifier separant of the present invention, it is characterized in that it being to carry out letex polymerization by n-BMA and methyl methacrylate to form, wherein n-BMA accounts for 0～10% of reaction monomers total mass, and methyl methacrylate accounts for 90～100% of reaction monomers total mass.
The present invention is preferred only to carry out the emulsion that letex polymerization forms by methyl methacrylate, also can increase n-BMA, and preferred amounts is to account for 0.1～10% of reaction monomers total mass
The preparation method of separant of the present invention is common emulsion polymerization.Need equally in the emulsion polymerization to add emulsifying agent and oxygenant, emulsifying agent is generally 1～2% of reaction monomers total amount, and oxygenant is generally 0.01～0.1% of reaction monomers total amount.Emulsifying agent and oxygenant all adopt the component of the common usefulness of emulsion polymerization, are sodium lauryl sulphate as emulsifying agent, and oxygenant adopts Potassium Persulphate or ammonium persulphate.
The use of the separant that the present invention makes is to be added on after the anti-impact ACR grafting in the emulsion through the emulsion that the above-mentioned emulsion polyreaction obtains, and adopts mechanical stirring to mix.It adds umber is the 2-5% of anti-impact ACR total mass, and separant forms sealing coat between anti-impact ACR particle, remedies because after improving anti-impact ACR nuclear portion content, the grafting of anti-impact ACR shell portion is incomplete, the bad defective that causes of coating.Improve the flowability of anti-impact ACR, prevent caking.Solution is easy plugging line in spraying drying, problems such as dry difficulty.Improve flowability, the dispersiveness of anti-impact ACR finished product, the use of separant can improve the nuclear portion content of anti-impact ACR, surpasses 80%, can reach 90%, to improve its resistance to impact shock.
Acrylic ester impact-resisting modifier ACR resin of the present invention belongs to prior art products, i.e. the acrylate nucleoid-shell graft copolymer that obtains as shell by monomeric mixtures such as grafting methyl methacrylate, vinylbenzene, vinyl cyanide on lightly crosslinked acrylic ester elastomer.
Embodiment
Embodiment one:
In the 3000L glassed steel reaction vessels, add the 1500kg softening water, the 24kg sodium lauryl sulphate is opened stirring, adds n-BMA 200kg, methyl methacrylate 1000kg, logical steam is warmed up to 60-80 ℃, adds 1.5kg Potassium Persulphate or ammonium persulphate, control reaction temperature 70-90 ℃, 85 ℃ of constant temperature was 1.5 hours after heat release was finished, and promptly finished.
Embodiment two:
According to the method for embodiment one, n-BMA 120kg, methyl methacrylate 1080kg.
Embodiment three:
According to the method for embodiment one, methyl methacrylate 1200kg, not methylate n-butyl acrylate.
Below be the front and back contrast of using separant in the impact modifier (being called for short anti-impact ACR):
| The stratum nucleare of anti-impact ACR | The shell of anti-impact ACR | The usage quantity of separant | Notched Izod impact strength KJ/m 2 | Mobile | The spraying drying complexity of anti-impact ACR |
| 50％ | 50％ | 18.01 | Good | Easily | |
| 60％ | 40％ | 21.53 | Good | Easily | |
| 65％ | 35％ | 23.14 | Generally | Generally | |
| 70％ | 30％ | 25.21 | Difference | Difficulty | |
| 70％ | 30％ | 2％ | 25.20 | Good | Easily |
| 75％ | 25％ | 3％ | 27.00 | Good | Easily |
| 80％ | 20％ | 3.5％ | 28.74 | Good | Easily |
| 85％ | 15％ | 4％ | 30.36 | Good | Easily |
| 90％ | 10％ | 5％ | 32.50 | Good | Easily |
| 92％ | 8％ | 5％ | 33.10 | Generally | Difficulty |
| 92％ | 8％ | 6％ | 33.07 | Generally | Difficulty |
Claims (2)
1. the purposes of the emulsion polymer of n-BMA and methyl methacrylate, it is characterized in that being used for the acrylic ester impact-resisting modifier separant, the emulsion polymer of described n-BMA and methyl methacrylate is to carry out letex polymerization by n-BMA and methyl methacrylate to form, wherein n-BMA accounts for 0～10% of reaction monomers total mass, and methyl methacrylate accounts for 90～100% of reaction monomers total mass.
2. the purposes of the emulsion polymer of n-BMA according to claim 1 and methyl methacrylate, it is characterized in that mixing in the emulsion after described emulsion polymer is added on the acrylic ester impact-resisting modifier grafting, addition is 2～5% of an acrylic ester impact-resisting modifier total mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100443000A CN100398574C (en) | 2005-08-19 | 2005-08-19 | Separating agent in acr in use for impact modifier, and method of use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100443000A CN100398574C (en) | 2005-08-19 | 2005-08-19 | Separating agent in acr in use for impact modifier, and method of use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1916039A CN1916039A (en) | 2007-02-21 |
| CN100398574C true CN100398574C (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100443000A Expired - Fee Related CN100398574C (en) | 2005-08-19 | 2005-08-19 | Separating agent in acr in use for impact modifier, and method of use |
Country Status (1)
| Country | Link |
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| CN (1) | CN100398574C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870751B (en) * | 2010-07-08 | 2012-05-02 | 河北工业大学 | Method for preparing acrylic ester functionalized copolymer for plasticizing nylon 6 |
| CN102453288B (en) * | 2010-10-22 | 2013-06-12 | 中国石油化工股份有限公司 | Toughened PVC (polyvinyl chloride) resin with high apparent density and preparation method thereof |
| CN102675527B (en) * | 2012-05-18 | 2013-12-25 | 华南理工大学 | Preparation method of water-borne long-chain acrylate separant |
| CN103627125A (en) * | 2013-11-26 | 2014-03-12 | 山东瑞丰高分子材料股份有限公司 | Method of improving dispersibility of impact-resistant ACR (Acrylics) assistant |
| CN105254824B (en) * | 2015-11-26 | 2018-03-16 | 淄博华星助剂有限公司 | Low temperature resistant high-impact PVC modifier and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312575A (en) * | 1991-08-13 | 1994-05-17 | Rohm And Haas Company | Microagglomeration of impact modifiers |
| US5534594A (en) * | 1994-12-05 | 1996-07-09 | Rohm And Haas Company | Preparation of butadiene-based impact modifiers |
| CN1357557A (en) * | 2000-12-14 | 2002-07-10 | 中国石化集团齐鲁石油化工公司 | Production process of impact-resisting and heat resistant copolymerized resin |
| CN1412232A (en) * | 2001-10-12 | 2003-04-23 | 中国石油天然气股份有限公司 | Preparation method of impact modifier acrylate resin (ACR-II) for PVC |
-
2005
- 2005-08-19 CN CNB2005100443000A patent/CN100398574C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5312575A (en) * | 1991-08-13 | 1994-05-17 | Rohm And Haas Company | Microagglomeration of impact modifiers |
| US5534594A (en) * | 1994-12-05 | 1996-07-09 | Rohm And Haas Company | Preparation of butadiene-based impact modifiers |
| CN1357557A (en) * | 2000-12-14 | 2002-07-10 | 中国石化集团齐鲁石油化工公司 | Production process of impact-resisting and heat resistant copolymerized resin |
| CN1412232A (en) * | 2001-10-12 | 2003-04-23 | 中国石油天然气股份有限公司 | Preparation method of impact modifier acrylate resin (ACR-II) for PVC |
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| CN1916039A (en) | 2007-02-21 |
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