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Publication numberCN1305389 A
Publication typeApplication
Application numberCN 99807215
PCT numberPCT/IB1999/000997
Publication date25 Jul 2001
Filing date1 Jun 1999
Priority date9 Jun 1998
Also published asCA2332982A1, CA2332982C, CA2333714A1, DE69929190D1, DE69929190T2, EP0963760A1, EP1085911A1, EP1085911B1, EP1144017A2, EP1144017A3, US6534561, WO1999064077A1, WO1999064078A2, WO1999064078A3
Publication number99807215.X, CN 1305389 A, CN 1305389A, CN 99807215, CN-A-1305389, CN1305389 A, CN1305389A, CN99807215, CN99807215.X, PCT/1999/997, PCT/IB/1999/000997, PCT/IB/1999/00997, PCT/IB/99/000997, PCT/IB/99/00997, PCT/IB1999/000997, PCT/IB1999/00997, PCT/IB1999000997, PCT/IB199900997, PCT/IB99/000997, PCT/IB99/00997, PCT/IB99000997, PCT/IB9900997
InventorsI科赞涅, G帕伦博
Applicant宝洁公司
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Low viscosity thermoplastic compositions for moisture vapour permeable structures and used in absorbent articles thereof
CN 1305389 A
Abstract  translated from Chinese
本发明涉及热塑性组合物,通过将该组合物涂覆在基材上制得不透液体、透湿气的层。 The present invention relates to thermoplastic compositions, by coating the composition on a substrate could not be made liquid impermeable, moisture vapor permeable layer. 该热塑性组合物包含较佳的热塑性聚合物和用于调节加工条件时组合物粘度的合适增塑剂。 The preferred thermoplastic composition comprising a thermoplastic polymer and a suitable plasticizer in combination when adjusting the processing conditions of the viscosity. 由本发明热塑性组合物制得的层可用于需要透湿气性的多种用途,例如用于吸收制品中,例如尿片、卫生巾、内裤衬垫和失禁用产品、保护性床罩、防护服等。 Prepared from the thermoplastic composition layer of the present invention can be used in the required moisture vapor permeability of a variety of uses, such as for absorbent articles, such as diapers, sanitary napkins, panty liners and incontinence products, protective bedding covers, protective clothing, etc. .
Claims(10)  translated from Chinese
1. 1. 一种热塑性组合物,包含:热塑性聚合物或者聚合物的混合物,在温度比所述聚合物或者聚合物混合物的DSC熔点高20℃、频率为1弧度/秒时的粘度高于5000泊,所述热塑性聚合物选自聚氨酯、聚醚-酰胺嵌段共聚物、聚乙烯-丙烯酸共聚物、聚环氧乙烷及其共聚物、聚交酯及其共聚物、聚酰胺、聚酯嵌段共聚物、磺化聚酯、聚醚-酯嵌段共聚物、聚醚-酯-酰胺嵌段共聚物、聚丙烯酸酯、聚丙烯酸及其衍生物、离聚物、乙酸乙烯酯含量超过28%(重量)的聚乙烯-乙酸乙烯酯、聚乙烯醇及其共聚物、聚乙烯醚及其共聚物、聚2-乙基噁唑啉及其衍生物、聚乙烯基吡咯烷酮及其共聚物、热塑性纤维素衍生物,或者它们的混合物,合适的相容性增塑剂或者增塑剂的共混物,用于调节所述粘度,所述热塑性组合物在温度为210℃或更低、频率为1弧度/秒时的粘度为50-4000泊,在温度为210℃或更低、频率为1000弧度/秒时的粘度低于2000泊。 A thermoplastic composition, comprising: a thermoplastic polymer or mixture of polymers, the viscosity of the polymer at a temperature higher than the DSC melting point of the polymer mixture or 20 ℃, a frequency of 1 rad / sec is higher than 5000 poise, the the thermoplastic polymer is selected from polyurethanes, polyether - block amide copolymers, polyethylene - acrylic acid copolymers, polyethylene oxide and its copolymers, poly lactide and copolymers, polyamides, polyester block copolymer thereof, sulfonated polyesters, poly - ester block copolymers, polyether - ester - amide block copolymers, polyacrylates, polyacrylic acids and derivatives, ionomers, vinyl acetate content of more than 28% ( wt) polyethylene - vinyl acetate, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2-ethyl-oxazoline and derivatives, polyvinyl pyrrolidone and its copolymers, thermoplastic fibers derivatives, or mixtures thereof, a suitable compatible plasticiser or blend of plasticisers for adjusting said viscosity, the thermoplastic composition at a temperature of 210 ℃ or less, a frequency of 1 Viscosity rad / s is 50-4000 poise, at a temperature of 210 ℃ or less, a frequency of viscosity 1000 rad / s of less than 2000 poise.
2. 2. 如权利要求1所述的热塑性组合物,其特征在于所述热塑性聚合物包括热塑性聚醚-酰胺嵌段共聚物、热塑性聚醚-酯-酰胺嵌段共聚物、热塑性聚酯嵌段共聚物、热塑性聚氨酯,或者它们的混合物。 The thermoplastic composition according to claim 1, wherein said thermoplastic polymer comprises thermoplastic poly - amide block copolymers, thermoplastic polyether - ester - amide block copolymers, thermoplastic polyester block copolymers, thermoplastic polyurethanes, or mixtures thereof.
3. 3. 如以上权利要求中任一项所述的热塑性组合物,其特征在于所述组合物包含:所述热塑性组合物的10-80%(重量),较好是25-70%(重量)的所述聚合物或者聚合物的混合物,所述热塑性组合物的20-90%(重量),较好是30-75%(重量)的所述增塑剂或者增塑剂的共混物,0-50%(重量)的合适的相容性增粘性树脂。 The said 10-80% (by weight) of the thermoplastic composition, preferably 25-70% (by weight): If any one of the preceding claims, wherein a thermoplastic composition, wherein said composition comprises said polymer or mixture of polymers, the 20-90% (by weight) of the thermoplastic composition, preferably a 30-75% (wt.) plasticiser or blend of plasticisers, 0- 50% (by weight) of a suitable compatible tackifying resin.
4. 4. 如以上权利要求中任一项所述的热塑性组合物,其特征在于所述增塑剂选自柠檬酸酯、酒石酸酯、甘油及其酯、己二酸酯、癸二酸酯、山梨糖醇、环氧化植物油、聚合植物油、多元醇、邻苯二甲酸酯、液态聚酯、甘醇酸酯、对甲苯磺酰胺及其衍生物、二元醇和聚二醇、山梨糖醇酐酯、磷酸酯、单羧酸脂肪酸(C8-C22)及其衍生物,以及它们的混合物。 The thermoplastic composition according to any one previous claim, wherein said plasticizer is selected from citric acid esters, tartaric acid esters, glycerol and its esters, adipates, sebacates, sorbitol , epoxidized vegetable oil, polymerized vegetable oils, polyols, phthalates, liquid polyesters, glycolates, p-toluene sulfonamide and derivatives, glycols and polyglycols, esters of sorbitan anhydrides, phosphates, monocarboxylic fatty acids (C8-C22) and their derivatives, and mixtures thereof.
5. 5. 如以上权利要求中任一项所述的热塑性组合物,其特征在于所述增粘性树脂选自松香和松香酯、烃类树脂、脂族树脂、萜烯和萜烯-酚醛树脂、芳族树脂、合成C5树脂、合成C5-C9树脂的混合物,以及它们的混合物。 The thermoplastic composition according to any one previous claim, wherein said tackifying resin is selected from rosins and rosin esters, hydrocarbon resins, aliphatic resins, terpene and terpene - phenolic resins, aromatic resins , synthetic C5 resins, mixtures of synthetic C5-C9 resins, and mixtures thereof.
6. 6. 由权利要求1所述的热塑性组合物形成的透湿气性层,其特征在于所述层是不透液体的,所述层的厚度至少为0.5微米时其水蒸气透过率(WVTR)至少为300克/米224小时。 Moisture vapor permeable layer of the thermoplastic composition as claimed in claim 1 by forming, characterized in that said layer is liquid impervious, the thickness of the layer is at least 0.5 m when its water vapor transmission rate (WVTR) of at least to 300 g / m 2 24 hours.
7. 7. 一种透湿气、不透液体的复合材料,它包含权利要求6的层涂覆在一种透湿气性的基材上。 A moisture vapor permeable, liquid impervious composite material comprising the layer of claim 6 coated onto a substrate a moisture vapor permeable.
8. 8. 一种包含权利要求6或7的透湿气、不透液体的层或复合材料的吸收制品。 Comprising a moisture vapor permeable to claim 6 or 7, a liquid impervious layer or composite absorbent article.
9. 9. 一种制备如权利要求1所述的热塑性组合物的方法,该方法包括以下步骤:提供所述热塑性聚合物或者聚合物的混合物,提供所述合适的增塑剂或者增塑剂的共混物,加热所述热塑性聚合物或者聚合物混合物以及所述增塑剂或者增塑剂共混物,并将其混合,形成熔融状态的所述热塑性组合物。 A method for preparing a thermoplastic composition as claimed in claim 1, wherein, the method comprising the steps of: providing said thermoplastic polymer or mixture of polymers, • providing said suitable plasticiser co blend, - heating the thermoplastic polymer or mixture of polymers and said plasticiser or blend of plasticisers, and mixed to form the thermoplastic composition in a molten state.
10. 10. 由权利要求1的热塑性组合物制备层的方法,该方法包括以下步骤:提供所述热塑性组合物,加热所述热塑性组合物使之可流动,将所述热塑性组合物以所需厚度的层形式涂覆在基材上。 Prepared by the method of claim 1, the thermoplastic composition layer, the method comprising the steps of: • providing said thermoplastic composition, * heating said thermoplastic composition to make it flowable, • Set the thermoplastic composition to the desired thickness the form of a layer coated on a substrate.
Description  translated from Chinese
用于透湿气性结构的低粘度热塑性组合物及其在吸收制品中的应用 Low viscosity thermoplastic compositions for moisture vapor permeable structures and the application of the absorbent article

发明领域本发明涉及热塑性组合物,通过将该组合物涂覆在基材上制得透湿气、不透液体的层。 Field of the Invention The present invention relates to thermoplastic compositions, by coating the composition on a substrate to obtain a moisture vapor permeable, liquid impervious layer. 本发明的组合物可用于需要透湿气性的多种用途,例如用于吸收制品中,所述吸收制品例如是尿片、卫生巾、内裤衬垫和失禁用产品、保护性床罩、防护服等。 The compositions of the invention are useful in applications requiring moisture vapor permeability of a variety of uses, such as for absorbent articles, said absorbent articles such as diapers, sanitary napkins, panty liners and incontinence products, protective bedding covers, protective clothing and so on.

发明背景本领域中已知除了具有透湿气性外,还具有不透液体性能的热塑性膜。 BACKGROUND OF THE INVENTION known in the art in addition to moisture vapor permeability, but also with liquid impervious thermoplastic film performance. 特别好的是这样一类亲水性连续膜,它们不是通过材料中的开孔或开口来使湿气流动的,而是通过在湿气浓度较高的膜的一面吸收水分,在湿气浓度较低的膜的另一面解吸或蒸发水分而使大量湿气透过膜进行传递。 Particularly preferred are a class of hydrophilic continuous film, they are not to make the moisture flowing through the opening or openings in the material, but by the moisture in the high concentration side of the membrane to absorb moisture, the moisture concentration the other side of the evaporation of water or a lower desorption film leaving large amounts of moisture passing through the film.

例如,WO 95/16746揭示了由a)嵌段共聚醚酯、嵌段共聚醚酰胺(如PebaxTM)和或聚氨酯,b)与a)不相容的热塑性聚合物和c)相容剂的混合物制得的膜。 For example, WO 95/16746 discloses by a) a block copolyether ester, block copolyether amides (e.g. PebaxTM) and or polyurethane, a mixture of b) and a) a thermoplastic polymer incompatible and c) a compatibilizer The resulting film. 该膜不透液体,透湿气率约为700克/米2/天。 The films are liquid impermeable moisture vapor permeability of about 700 g / m 2 / day. 此外,US5,447,783揭示了一种透气不透水的多组分膜结构,该膜结构至少具有三层:外层是疏水性共聚醚酯弹性体(厚度为1.3-7.6微米,WVTR为400-2500克/米2/24小时),内层为亲水性共聚醚酯弹性体(厚度为7.6-152微米,WVTR至少为3500克/米224小时)。 Furthermore, US5,447,783 discloses a vapor permeable water resistant multi component film structure, the film structure having at least three layers: the outer layer is hydrophobic copolyetherester elastomer (having a thickness of 1.3-7.6 m, WVTR of 400-2500 g / m 2/24 h), the inner layer is a hydrophilic copolyetherester elastomer (thickness of 7.6 -152 microns, WVTR of at least 3500 g / m 2 24 hours).

US 5,445,875揭示了一种防水、防血、防病毒的透气性层合材料。 US 5,445,875 discloses a waterproof, blood, breathable layer of virus synthetic material. 该层合材料包含织造/非织造织物和厚度约为1密耳(25.4微米)的挤出膜(如HytrelTM)。 The laminate comprises a woven / nonwoven fabric and a thickness of about 1 mil (25.4 microns) of the extruded film (e.g. HytrelTM).

其它复合层合材料描述于例如US 5,599,610,它揭示了用于手术服的三层层合织物,包含织造织物的外层和微孔聚氨酯膜的内层,所述微孔膜的厚度为12-55微米,MVTR为1100克/米224小时. Other composite laminates described for example in US 5,599,610, which discloses a three-layer laminated fabric for surgical gowns, including the inner and outer fabric woven microporous polyurethane membrane thickness of the microporous membrane of 12- 55 microns, MVTR of 1100 g / m 2 24 hours. 直立(upright)和5500克/米224小时. Vertical (upright) and 5500 g / m 2 24 hours. 倒置(inverted)(ASTM E96-B)。 Inversion (inverted) (ASTM E96-B). 聚醚-聚氨酯粘合剂用来粘合这两层。 Polyether - polyurethane adhesive used to bond the two layers.

同样,US 5,532,053揭示了高透湿气性的医用膜,它可以层合在非织造材料上。 Similarly, US 5,532,053 discloses a high moisture transmission medical film, it can be laminated onto a nonwoven material. 层合膜包含聚醚酯共聚物的第一层和选自特定聚合物类的第二和第三层。 The laminate film comprises a first layer of polyetherester copolymer and second and third layers selected from a specified group of polymers. 该膜的MVTR大于750克/米224小时(ASTM F1249),厚度小于1密耳(25.4微米),较好是0.6-0.75密耳(15-19微米)。 MVTR of the film is greater than 750 g / m 2 24h (ASTM F1249), a thickness less than 1 mil (25.4 microns), preferably 0.6-0.75 mil (15-19 microns).

US 4,938,752揭示了包含共聚醚酯膜的吸收制品,该膜具有降低的透水性,透湿气率为500克/米224小时(用具体说明的试验方法测得),厚度为5-35微米。 US 4,938,752 discloses copolyetherester film comprising an absorbent article, the film has a reduced water permeability, water vapor permeability of 500 g / m 2 24 hours (Test methods specifically described by measured), a thickness of 5-35 m. 该专利未揭示支承基材。 The patent does not reveal the base substrate.

US 4,493,870揭示了柔性的多层防水制品,它包含覆盖有共聚醚酯膜的纺织品材料,所述膜的MVTR至少为1000克/米224小时(ASTM E96-66),厚度为5-35微米。 US 4,493,870 discloses a flexible layered waterproof product which comprises copolyetherester film is covered with the textile material, the membrane MVTR of at least 1000 g / m 2 24h (ASTM E96-66), having a thickness of 5-35 m.

GB2024100揭示了一种柔性的多层抗水制品,它包含微孔疏水外层(它是透湿气但不透液体的)和MVTR高于1000克/米224小时的聚醚聚氨酯的亲水性内层。 GB2024100 discloses a flexible layered water resistant article comprising a microporous hydrophobic outer layer (which is moisture vapor permeable but liquid impervious) and MVTR greater than 1000 g / m 2 24 hours polyether polyurethane pro The aqueous layer.

已知用于具有透湿气、不透液体的亲水连续膜或层的组合物包括热塑性聚合物,如聚氨酯、聚醚-酰胺嵌段共聚物、聚乙烯-丙烯酸共聚物、聚环氧乙烷及其共聚物、聚交酯及其共聚物、聚酰胺、聚酯嵌段共聚物、磺化聚酯、聚醚-酯嵌段共聚物、聚醚-酯-酰胺嵌段共聚物、聚丙烯酸酯、聚丙烯酸及其衍生物、离聚物、乙酸乙烯酯含量超过28%(重量)的聚乙烯-乙酸乙烯酯、聚乙烯醇及其共聚物、聚乙烯醚及其共聚物、聚2-乙基噁唑啉及其衍生物、聚乙烯基吡咯烷酮及其共聚物、热塑性纤维素衍生物,以及它们的混合物。 Are known for having a moisture vapor permeable, liquid impermeable composition is hydrophilic continuous films or layers include thermoplastic polymers such as polyurethanes, polyether - block amide copolymers, polyethylene - acrylic acid copolymers, polyethylene oxide alkoxy its copolymers, poly lactide and copolymers, polyamides, polyester block copolymers, sulfonated polyesters, poly - ester block copolymers, polyether - ester - amide block copolymers, poly acrylate, polyacrylic acids and derivatives, ionomers, vinyl acetate content of more than 28% (by weight) of polyethylene - vinyl acetate, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2 - ethyl-oxazoline and derivatives, polyvinyl pyrrolidone and its copolymers, thermoplastic cellulose derivatives, and mixtures thereof. 所述组合物可用于制备具有高度透湿气性值但又不透液体的层和膜,所述层和膜特别好的是用于一次性的吸收制品中。 The composition is useful for preparing highly moisture vapor permeability value but not liquid impermeable layer and the film, and the film layer is particularly preferred for disposable absorbent articles.

然而,由上述热塑性组合物制得的膜和层存在这样一个问题,即所述组合物在加工条件下通常是高度粘性的塑性状态,只能通过挤出技术进行加工。 However, by the presence of the above-mentioned film and the thermoplastic composition layer obtained such a problem that the composition is under the process conditions are generally highly viscous plastic state, can only be processed by extrusion techniques. 用来由热塑性聚合物制备膜和层的挤出工艺是熟知的,但是具有相当复杂的缺点;这些工艺实际上需要昂贵的设备,通常包含高功率螺杆挤出机使塑性状态的材料压经过缝模,形成膜或层。 By an extrusion process for the preparation of a thermoplastic polymer film and the layers are well known, but has the drawback of quite complex; in fact, these processes require expensive equipment, typically comprising a high power screw extruder so that the plastic material is pressed through the slit state mold, forming a film or layer. 挤出工艺条件通常还包含相当高的温度和压力。 Extrusion process conditions also typically contain a relatively high temperature and pressure. 此外,用于形成膜或层的挤出设备难以加入生产线中,如用于生产一次性吸收制品的生产线。 In addition, the extrusion apparatus for forming a film or layer is difficult to join the production line, for example for the production of disposable absorbent article production line. 此外,挤出工艺不适合于制备厚度特别小的膜,如5-10微米的膜。 Furthermore, the extrusion process is not suitable for the preparation of a particularly small film thickness, such as 5-10 micron membrane.

此外,在层合复合结构的情况下,即一层较佳的透湿气、不透液体的组合物层合在基材(如纤维层)上,通常需要加入粘合剂以确保膜永久性固定在基材上。 Further, in the case of laminated composite structures, i.e., a layer of the preferred moisture vapor permeable, liquid impermeable composition is laminated to a substrate (e.g. fiber layer), generally requires adding a binder to ensure a permanent film fixed on the substrate. 然而,这样会对所得复合物整体的透湿气性产生不利影响,并增加生产工艺的复杂性。 However, this will be the resultant composite as a whole adversely affect moisture vapor permeability, and increase the complexity of the production process.

因此,需要提供这样一种组合物,它能用于制备透湿气、不透液体的亲水连续层,该层具有较佳的透湿气和不透液体的性能,所述组合物还易于加工,可在基材上形成更好的薄膜涂层,由此无需使用复杂的常规挤出设备。 Therefore, a need to provide a composition which can be used for preparing a moisture vapor permeable, liquid impermeable hydrophilic continuous layer which has better moisture vapor permeable and liquid impermeable properties, the composition is also easy processing, may form a better film coating on a substrate, thereby without the use of complex traditional extrusion apparatuses.

发明概述本发明涉及一种热塑性组合物,它包含:热塑性聚合物或者聚合物的混合物,于温度为比所述聚合物或者聚合物混合物的DSC熔点(如本文中所述进行测定)高20℃、频率为1弧度/秒时的粘度为高于5000泊,所述热塑性聚合物选自聚氨酯、聚醚-酰胺嵌段共聚物、聚乙烯-丙烯酸共聚物、聚环氧乙烷及其共聚物、聚交酯及其共聚物、聚酰胺、聚酯嵌段共聚物、磺化聚酯、聚醚-酯嵌段共聚物、聚醚-酯-酰胺嵌段共聚物、聚丙烯酸酯、聚丙烯酸及其衍生物、离聚物、乙酸乙烯酯含量超过28%(重量)的聚乙烯-乙酸乙烯酯、聚乙烯醇及其共聚物、聚乙烯醚及其共聚物、聚2-乙基噁唑啉及其衍生物、聚乙烯基吡咯烷酮及其共聚物、热塑性纤维素衍生物,或者它们的混合物,合适的相容性增塑剂或者增塑剂的共混物,用于调节所述粘度,所述热塑性组合物在温度为210℃或更低、频率为1弧度/秒(rad/s)时的粘度为50-4000泊,在温度为210℃或更低、频率为1000弧度/秒时的粘度低于2000泊。 Summary of the Invention The present invention relates to a thermoplastic composition comprising: a thermoplastic polymer or polymer mixture, at a temperature of DSC melting point than the polymer or polymer mixture (measured as described herein) 20 ℃ high , a viscosity of a frequency of 1 rad / sec is higher than 5000 poises, the thermoplastic polymer is selected from polyurethanes, polyether - block amide copolymers, polyethylene - acrylic acid copolymers, polyethylene oxide and its copolymers , poly lactide and copolymers, polyamides, polyester block copolymers, sulfonated polyesters, poly - ester block copolymers, polyether - ester - amide block copolymers, polyacrylates, polyacrylic acid and derivatives, ionomers, vinyl acetate content of more than 28% (by weight) of polyethylene - vinyl acetate, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2-ethyl-oxazol and derivatives thereof, polyvinyl pyrrolidone and its copolymers, thermoplastic cellulose derivatives, or mixtures thereof, a suitable compatible plasticiser or blend of plasticisers for adjusting said viscosity, the thermoplastic composition at a temperature of 210 ℃ or lower, a viscosity frequency 1 rad / sec (rad / s) is 50-4000 poise when at a temperature of 210 ℃ or less, a frequency of 1000 rad / s The viscosity of less than 2000 poise.

发明的详细说明用于制备透湿气、不透液体的亲水连续膜或层的较佳热塑性聚合物是聚氨酯、聚醚-酰胺嵌段共聚物、聚乙烯-丙烯酸共聚物、聚环氧乙烷及其共聚物、聚交酯及其共聚物、聚酰胺、聚酯嵌段共聚物、磺化聚酯、聚醚-酯嵌段共聚物、聚醚-酯-酰胺嵌段共聚物、聚丙烯酸酯、聚丙烯酸及其衍生物、离聚物、乙酸乙烯酯含量超过28%(重量)的聚乙烯-乙酸乙烯酯、聚乙烯醇及其共聚物、聚乙烯醚及其共聚物、聚2-乙基噁唑啉及其衍生物、聚乙烯基吡咯烷酮及其共聚物、热塑性纤维素衍生物,以及它们的混合物。 Detailed Description of the Invention Preferred thermoplastic polymers for the manufacture of moisture vapor permeable, liquid impervious film or layer of continuous hydrophilic polyurethane, polyether - block amide copolymers, polyethylene - acrylic acid copolymers, polyethylene oxide alkoxy its copolymers, poly lactide and copolymers, polyamides, polyester block copolymers, sulfonated polyesters, poly - ester block copolymers, polyether - ester - amide block copolymers, poly acrylate, polyacrylic acids and derivatives, ionomers, vinyl acetate content of more than 28% (by weight) of polyethylene - vinyl acetate, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2 - ethyl-oxazoline and derivatives, polyvinyl pyrrolidone and its copolymers, thermoplastic cellulose derivatives, and mixtures thereof. 在上述热塑性聚合物中,特别好的是热塑性聚醚-酰胺嵌段共聚物(如PebaxTM)、热塑性聚醚-酯-酰胺嵌段共聚物、热塑性聚酯嵌段共聚物(如HytrelTM)、热塑性聚氨酯(如EstaneTM),或者它们的混合物。 In the above-mentioned thermoplastic polymers particularly preferred are thermoplastic poly-ether - amide block copolymers (e.g. PebaxTM), thermoplastic polyether - ester - amide block copolymers, thermoplastic polyester block copolymers (e.g. HytrelTM), thermoplastic polyurethanes (e.g. EstaneTM), or mixtures thereof. 这些热塑性聚合物或者聚合物混合物在加工成膜或层的已知工艺(如使用高功率螺杆挤出机的挤出工艺)的典型工艺条件时在熔融状态下通常是高度粘性的。 Such thermoplastic polymers or mixture of polymers in the film or layer of the known processing technology (e.g., an extrusion process using a high power screw extruder) Typical process conditions in a molten state is generally highly viscous. 尤其是热塑性聚合物或者聚合物的混合物在温度比DSC(差示扫描量热法)熔点高20℃、频率为1弧度/秒时的粘度高于5000泊,所述DSC熔点对应于DSC峰值的温度,或者在聚合物混合物多于一个峰的情况下对应于最高DSC峰的温度。 Especially thermoplastic polymer or mixture of polymers at temperatures than DSC (Differential scanning calorimetry) melting point higher 20 ℃, a frequency of viscosity 1 rad / sec is higher than 5000 poise, the DSC melting point of the corresponding peak in DSC temperature, or in the polymer mixture is more than one peak in the case of a temperature corresponding to the highest DSC peak.

本发明热塑性组合物的粘度可通过提供包含热塑性聚合物或者聚合物混合物和合适的增塑剂或者增塑剂共混物的热塑性组合物加以调节,所述增塑剂或者增塑剂共混物可与热塑性聚合物相容,并可降低热塑性组合物在熔融状态时的粘度。 The viscosity of the thermoplastic composition of the present invention may comprise a thermoplastic polymer, or by providing a polymer mixture be regulated and a suitable thermoplastic composition plasticiser blend, said plasticiser or blend of plasticisers compatible with the thermoplastic polymer, and can reduce the viscosity of the thermoplastic composition in the molten state.

按照本发明,热塑性组合物具有以下复数粘度(η*):在210℃或更低的温度、1弧度/秒的频率时,50泊<η*<4000泊,较好是100泊<η*<2000泊,更好是100泊<η*<1000泊,在210℃或更低的加工温度(T)、1000弧度/秒的频率时,η*<2000泊,较好是η*<1000泊,更好是η*<500泊。 According to the present invention, the thermoplastic compositions have the following complex viscosities (η *): at 210 ℃ or lower, 1 rad / sec frequency and 50 poise <η * <4000 poise, preferably 100 poise <η * <2000 poise, preferably 100 poise <η * <1000 poise, at 210 ℃ or lower processing temperature (T), at 1000 radians / second frequency, η * <2000 poise, preferably η * <1000 poise, more preferably η * <500 poise. 其中,η*表示热塑性聚合物组合物的复数粘度。 Wherein, η * represents the complex viscosity of the thermoplastic polymer composition. 较好的温度T是200℃或更低,更好是180℃或更低,最好是200℃至50℃。 Preferably the temperature T is 200 ℃ or lower, more preferably 180 ℃ or lower, preferably 200 ℃ to 50 ℃.

令人惊奇的是,在可用本领域已知的用来将低粘度热熔体组合物以所需厚度的膜形式涂覆在基材上的常用涂覆条件和设备将具有所述复数粘度的热塑性组合物在基材上涂覆膜或层,在保持较佳热塑性聚合物的优点的同时,还具有透湿气、不透液体的亲水连续层或膜。 Surprisingly, in the available known in the art for low viscosity hot melt compositions in the form of film of a desired thickness of coating on a substrate commonly used coating conditions and apparatuses having the complex viscosity The thermoplastic composition coated on a substrate or coating layer, while maintaining the advantages of the preferred thermoplastic polymers, and also has a moisture vapor permeable, liquid impervious layer or film of a hydrophilic continuous.

还发现,具有所述粘度的热塑性组合物还可以得到非常薄的膜或层。 Also found that thermoplastic compositions having such viscosities can also provide very thin films or layers.

用于本发明热塑性组合物的合适的增塑剂包括柠檬酸酯、酒石酸酯、甘油及其酯、己二酸酯、癸二酸酯、山梨糖醇、环氧化植物油、聚合植物油、多元醇、邻苯二甲酸酯、液态聚酯、甘醇酸酯、对甲苯磺酰胺及其衍生物、二元醇和聚二醇、山梨糖醇酐酯、磷酸酯、单羧酸脂肪酸(C8-C22)及其衍生物,以及它们的混合物。 Suitable plasticizers used in the thermoplastic compositions of the present invention include citric acid esters, tartaric acid esters, glycerol and its esters, adipates, sebacates, sorbitol, epoxidized vegetable oil, polymerized vegetable oil, polyol , phthalates, liquid polyesters, glycolates, p-toluene sulfonamide and derivatives, glycols and polyglycols, esters of sorbitan anhydrides, phosphates, monocarboxylic fatty acids (C8-C22 ) and derivatives thereof, and mixtures thereof.

本发明的热塑性组合物含有该热塑性组合物的较好是10-80%(重量),更好是25-70%(重量)的热塑性聚合物或者聚合物的混合物,该热塑性组合物的20-90%(重量),较好是30-75%(重量)的合适的增塑剂或者增塑剂的共混物。 The thermoplastic composition of the present invention comprises the thermoplastic composition is preferably 10-80% (by weight), more preferably a mixture of 25-70% (by weight) of the thermoplastic polymer or polymers, the thermoplastic composition of 20- 90% (by weight), preferably 30-75% (by weight) of a suitable plasticiser or blend of plasticisers.

本发明的热塑性组合物还可包含其它任选组分,以进一步改进组合物的加工性和由该热塑性组合物形成的膜或层的机械特性及其它特性(如粘合性、抗光和氧气的老化性、外观等)。 The thermoplastic composition of the present invention may further comprise other optional components to further improve the processability of the composition and mechanical properties of the film or layer, and other characteristics of the thermoplastic composition formed by (e.g., adhesion, anti-light and oxygen aging resistance, appearance, etc.).

这些任选组分包括软化点为125℃或更低的增粘性树脂或者增粘性树脂的共混物。 These optional components include a softening point of 125 ℃ or lower tackifying resin or a blend of tackifying resins. 较佳的树脂(含量最多为热塑性组合物的50%(重量))可选自松香和松香酯、烃类树脂、脂族树脂、萜烯和萜烯-酚醛树脂、芳族树脂、合成C5树脂、合成C5-C9树脂的混合物,以及它们的混合物。 Preferred resin (content of up to 50% of the thermoplastic composition (by weight)) can be selected from rosins and rosin esters, hydrocarbon resins, aliphatic resins, terpene and terpene - phenolic resins, aromatic resins, synthetic C5 resins , mixtures of synthetic C5-C9 resins, and mixtures thereof. 所述热塑性组合物的其它任选组分包括抗氧化剂、抗紫外线剂、颜料,以及它们的混合物,这些可任选组分在组合物中的含量最多为该组合物的10%(重量)。 Other optional components of said thermoplastic compositions include anti-oxidants, anti-UV agents, pigments, and mixtures thereof, these optional components may be present in the composition in up to 10% for the composition (by weight).

本发明的热塑性组合物可以用如下方法制得,该方法通常包含以下步骤:提供热塑性聚合物或者聚合物混合物以及合适的增塑剂或者增塑剂共混物,加热这些组分并将其混合(例如用已知合适的混合机),形成具有所需复数粘度η*的熔融状态的热塑性组合物。 The thermoplastic composition of the present invention can be prepared by the following method, the method generally comprises the steps of: providing a thermoplastic polymer or mixture of polymers and the suitable plasticiser or blend of plasticisers, heating the components and compounding (e.g., by a known suitable mixer) to form a thermoplastic composition having the desired complex viscosity η * of the molten state.

根据本发明,可通过将本发明的热塑性组合物涂覆在基材上而形成透湿气、不透液体的层。 According to the present invention, can be prepared by coating the thermoplastic composition of the present invention on a substrate to form a moisture vapor permeable, liquid impervious layer. 由本发明热塑性组合物形成的膜或层在厚度至少为0.5微米时的透湿气率宜至少为100克/米2.24小时,较好是至少300克/米2.24小时,最好是至少500克/米2.24小时。 Film or layer from the thermoplastic composition of the present invention for forming a moisture vapor transmission rate of at least 0.5 microns in thickness is preferably at least 100 g / m 2.24 hours, preferably at least 300 g / m 2.24 hours, preferably at least 500 g / meters in 2.24 hours.

由本发明的热塑性组合物制备层或膜的方法通常包含以下步骤:提供所述组合物,加热该组合物使之可流动,将熔融状态的所述组合物以所需厚度的膜形式涂覆在基材上。 Layer or film prepared from a thermoplastic composition of the present invention generally comprise the steps of: providing said composition, heating the composition to make it flowable, the composition in a molten state in the form of film with a desired thickness of the coating in substrate. 所述基材可以只是成形用基材,将热塑性组合物涂覆在上面以形成所需厚度的膜或层,然后将所述膜或层与所述基材分离,单独使用。 The substrate can be simply a formation substrate, the thermoplastic composition is coated in order to form a film or layer of a desired thickness, and then the film or to the substrate layer was separated, used alone. 但按本发明的一个实施方案,也可以在所述基材上涂覆所述热塑性组合物,形成包含热塑性组合物和基材的透湿气、不透水的复合材料,所述基材宜也为透湿气性的。 However, according to one embodiment of the present invention, may be coated on the substrate of the thermoplastic composition, the thermoplastic composition is formed comprising a substrate and a moisture vapor permeable, water impervious composite materials, the substrate should also for moisture vapor permeable.

本发明的该实施方案提供了一种透湿气、不透液体的复合材料,其中由本发明热塑性组合物形成的层对复合材料性能的贡献仅在于提供了不透液体性能,因此最好尽可能地薄。 This embodiment of the invention provides a moisture vapor permeable, liquid impervious composite wherein the contribution from the thermoplastic composition layer of the present invention is formed only on the properties of the composite material is to provide a liquid impervious property, and therefore the best possible thin. 其余的性能物理标准宜由设置的基材提供,因此基材较好是也用作支承层。 The remaining performance physical criterion being preferably provided by the provided substrate, thus the substrate is preferably also as a support layer.

基材或支承层可以是任何可用的层,宜也是透湿气性的,透湿气率较好是至少100克/米2.24小时,更好是至少300克/米2.24小时,最好是至少500克/米2.24小时。 Substrate or support layer may be any of the available layers should also moisture vapor permeable, moisture vapor permeability of preferably at least 100 g / m 2.24 hours, more preferably at least 300 g / m 2.24 hours, preferably at least 500 g / m 2.24 hours.

本文所用的作为支承层的合适基材包括二维、平面微孔膜和大孔膜;宏观扩张多孔膜;成形的开孔膜;非织造层和织造层。 Suitable substrates as a supporting layer as used herein include 2 dimensional, planar micro and macro-porous membrane film; nonwoven layer and a woven layer; macroscopic expansion of the porous film; film formed openings. 按照本发明,所述层中的开孔可以是任何构形,但较好是球形或椭圆形(oblong),也可以具有不同的尺寸。 According to the present invention, the openings in said layer may be of any configuration, but are preferably spherical or oval (oblong), but also may have different sizes. 开孔较好是均匀分布在层的整个表面上,然而也可以想到只有一些表面区域具有开孔的层。 The apertures preferably are evenly distributed across the entire surface of the layer, but it is also conceivable that only some of the surface area of the layer having openings.

后片(backsheet)的合适的二维多孔平面层可以由本领域已知的任何材料制得,但较好是由通常可得的聚合物材料制得。 After the sheet (backsheet) Suitable two dimensional porous planar layers may be known in the art of any material, but are preferably manufactured from commonly available polymeric materials. 合适的材料例如是GoretexTM或SympatexTM型号的材料,在本领域中熟知这些材料是用于称为透气服装的。 Suitable materials are for example GoretexTM or SympatexTM type materials well known in the art, these materials are used in so-called breathable clothing. 其它合适的材料包括Minnesota Mining and Manufacturing Company,St.Paul,Minnesota,USA的XMP-1001和Exxon Chemical Company提供的ExxaireXBF-101W。 Other suitable materials include Minnesota Mining and Manufacturing Company, St.Paul, Minnesota, USA XMP-1001 of Exxon Chemical Company and provided ExxaireXBF-101W. 此处所用的术语“二维平面层”是指深度小于1毫米,较好是小于0.5毫米的层,其中的开孔在沿层的长度方向具有平均均匀直径,并且不突出层面。 As used herein, the term "two-dimensional planar layer" refers to the depth of less than 1 mm, preferably a layer of less than 0.5 mm, wherein the apertures have an average uniform diameter along their length and are not prominent level. 用作本发明后片的多孔材料可以用本领域已知的任何方法制备,如EPO 293 482中描述的方法,该文献在本发明中引作参考。 Any preparation of a porous material after the sheet of the present invention may be used as known in the art methods, such as EPO 293,482 method described in the literature in the present invention, incorporated herein by reference. 此外,由该方法制得的开孔尺寸可通过在后片层面施加力(即拉伸该层)而增大。 In addition, hole size obtained by this method may apply a force in the backsheet layer (i.e. stretching the layer) is increased by.

合适的多孔成形膜包括具有离散开孔的膜,这些开孔伸出层的服装面料表面的水平面,伸向芯层,由此形成凸起。 Suitable apertured formed films include films having discrete openings, these openings extending horizontal surface of the fabric layer towards the core thereby forming projections. 这些凸起在其末端有一个小孔。 These projections have a small hole at its distal end. 所述凸起较好是具有漏斗形状,类似于US 3,929,135中所述。 Preferably said protuberances have a funnel shape, similar to the described in US 3,929,135. 位于平面内的开孔和位于凸起本身末端处的小孔可以是圆形或非圆形的,只要位于凸起末端处小孔的截面尺寸或面积小于位于层的服装面料表面内的开孔的截面尺寸或面积。 Located within the plane and the opening is located at the end of the projection aperture itself may be circular or noncircular, as long as the projection is located at the end of the cross-sectional dimension or area of the orifice opening is located lower than the surface of the fabric layer within the The cross-sectional dimension or area. 所述多孔的预成形膜较好是单向的,以使得这些膜如果不是完全单向地,也至少是基本上单向地朝芯层输送流体。 The porous membrane is preferably preformed are unidirectional, so that these films, if not complete one-way, it is also at least substantially unidirectional fluid transport towards the core.

用于本发明的合适的宏观的发泡膜包括例如US4,637,819和US4,591,523中所述的膜。 Suitable macroscopically expanded films for use herein include, for example film described in US4,637,819 and US4,591,523.

本发明所用的较佳支承层包括织造层和非织造层,最好是疏水型纤维层,如疏水性非织造纤维层。 Preferred support layers for use herein include woven layer and a nonwoven layer, most preferably hydrophobic fibrous layers such as hydrophobic nonwoven fibrous layer.

本发明的较佳实施方案的复合材料特别好在它们可将热塑性组合物以所需厚度的层形式涂覆在支承基材上。 Composites of this preferred embodiment of the present invention are particularly advantageous as they may be of the thermoplastic composition in the form of the desired thickness of the coating layer on the support substrate. 本领域中已知的用于直接涂覆低粘度热熔体的通常涂覆条件和设备即可用来制备所需厚度的热塑性组合物。 Generally known in the art, coating conditions and apparatuses for direct coating of low viscosities hot melts can be used to prepare the desired thickness of the thermoplastic composition.

将热塑性组合物涂覆在用作支承层的基材上而形成复合层合材料的可行方法描述于PCT申请WO 96/25902中。 Possible ways thermoplastic composition is coated on a substrate acting as a support layer to form a composite laminated materials are described in PCT application WO 96/25902 in.

层式热塑性组合物至少在涂覆温度时对支承基材具有粘合性能,以形成较佳的复合材料,从而无需额外的粘合剂就能获得该热塑性组合物和基材之间的永久粘合。 Wherein the thermoplastic composition layer is at least at the coating temperature, on the support substrate having adhesive properties to form the preferred composite such that no additional adhesive is required to obtain a permanent adhesive of the thermoplastic composition and the substrate between the co. 在一些情况下,还会要求热塑性组合物在任何温度均保持粘性,即它具有压敏粘合剂的典型特征。 In some cases, also desirable that the thermoplastic composition remains tacky at any temperature are, i.e., it has the typical characteristics of a pressure sensitive adhesive.

本发明的热塑性组合物以及由它形成的透湿气、不透液体的层和复合材料可用于需要不透液体、透湿气性的多种用途。 The thermoplastic composition and moisture vapor which is formed by the present invention, a liquid impervious layers and composites can be used for many purposes requires liquid impervious, moisture vapor permeable. 具体而言,本发明可有效地用于吸收制品内,所述吸收制品例如尿片、卫生巾、内裤衬垫和失禁用产品;汗垫,如臂下、腕、头的汗垫,衣领衬垫、鞋垫、帽圈和胸垫;保护性床罩、防护服等。 More specifically, the present invention can be effectively used for the absorbent article, the absorbent articles such as diapers, sanitary napkins, panty liners and incontinence products; perspiration pads, such as the lower arm, wrist, head perspiration pads, collar pads, insoles, cap ring and chest pads; protective bedspreads, protective clothing. 由本发明热塑性组合物形成的透湿气、不透液体的层和复合材料的透湿气率较好是至少100克/米224小时,更好是至少300克/米224小时,最好是至少500克/米224小时。 Moisture vapor from the thermoplastic composition of the present invention is formed, a liquid impervious layer and moisture vapor permeability of the composite material is preferably at least 100 g / m 2 24 hours, more preferably at least 300 g / m 2 24 hours, preferably at least 500 g / m 2 24 hours.

由本发明的热塑性组合物涂覆在合适的基材上形成的透湿气、不透液体复合结构可用作吸收制品(尤其是卫生巾和内裤衬垫)的后片。 Moisture vapor from the thermoplastic composition of the present invention is coated on a suitable substrate is formed, liquid impervious composite structure can be used as an absorbent article (especially sanitary napkins and panty liners) of the rear panel. 这些制品通常包含熟练技术人员已知的组件,如可透过液体的上片、吸收芯和后片,以及可任选地包含紧固件、护翼等。 These articles typically comprise components known to the skilled person, such as a liquid pervious topsheet, an absorbent core and the backsheet, and may optionally comprise fastening means, wings, and so on.

实施例将Elf Atochem(法国)、商品名为Pebax MV1074的聚醚-酰胺嵌段共聚物与Aldrich Co.的柠檬酸三乙酯和Ciba-Geigy的Irganox 1010(抗氧化剂)混合。 Example polyether Elf Atochem (France) under the trade name Pebax MV1074 - A amide block copolymers and Aldrich Co. triethyl citrate and Ciba-Geigy's Irganox 1010 (antioxidant) were mixed.

聚合物的DSC峰值熔点为158℃,温度178℃和频率1弧度/秒时的复数粘度为6410泊。 DSC peak melting point of the polymer was 158 ℃, temperature 178 ℃ complex viscosity and frequency of 1 rad / sec to 6410 poise.

最终制剂具有以下组成(以重量百分数计): The final formulation had the following composition (in weight percent):

于160℃熔融挤出该混合物,得到厚度等于5微米的膜。 At 160 ℃ melt extruding the mixture to obtain a film thickness equal to 5 microns. 在此挤出温度,1弧度/秒和1000弧度/秒剪切速率时该混合物的复数粘度分别为517泊和172泊。 In this extrusion temperature, the complex viscosity of the mixture at 1 rad / s and 1000 rad / s shear rate was 517 poise and 172 poise. 然后,将该膜直接层合在由粗梳疏水性100%聚丙烯非织造织物34克/米2制得的基材(支承层,购自Sandler(德国),商品名为Sawabond 4326)上。 Then, the film is directly laminated by a carded hydrophobic 100% polypropylene nonwoven 34 g / m 2 was a substrate (support layer, available from Sandler (Germany) under the trade name Sawabond 4326) on. 复合基材的透湿气率为2530克/米2.24小时。 The water vapor permeability of the composite substrate 2530 g / m 2.24 hours.

按照本发明,用Rheometries Co.的Rheometer RDA-Ⅱ测得复数粘度。 According to the present invention, Rheometer RDA-Ⅱ was measured with Rheometries Co. of complex viscosity. 按照ASTM E-96“直立杯(Upright Cup)”方法于23℃测得透湿气率。 In accordance with ASTM E-96 "upright cup (Upright Cup)" method at 23 ℃ measured moisture vapor permeability.

Classifications
International ClassificationA41D19/00, C08K5/134, A61L15/26, C08L101/00, A61F6/04, A41D1/00, A61L15/42, A61F6/14, C08J5/00, A61L15/22, C08K5/11, C08K5/00, A41D31/00, A61L15/24, A61F13/10, A61B19/04, A61L15/00
Cooperative ClassificationA61L15/225, A61L15/24, A61L15/42, C08K5/11, A61L15/26, C08K5/1345
European ClassificationC08K5/134B, C08K5/11, A61L15/22M, A61L15/42, A61L15/24, A61L15/26
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25 Jul 2001C06Publication
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23 Mar 2005C02Deemed withdrawal of patent application after publication (patent law 2001)