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    Process for making substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications
    4.
    发明授权
    Process for making substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications 失效
    制备用于个人护理应用的乙烯基吡咯烷酮和N-3,3-二甲基氨基丙基甲基丙烯酰胺的基本上均匀的共聚物的方法

    公开(公告)号：US06110454A

    公开(公告)日：2000-08-29

    申请号：US655492

    申请日：1996-05-30

    申请人： Kou-Chang Liu ,  Lowell R. Anderson ,  Eugene E. Hardy ,  Yakir Reuven

    发明人： Kou-Chang Liu ,  Lowell R. Anderson ,  Eugene E. Hardy ,  Yakir Reuven

    IPC分类号： A61K8/81 ,  A61Q5/06 ,  C08F2/10 ,  C08F220/60 ,  C08F226/10 ,  A61K31/79

    CPC分类号： A61Q5/06 ,  A61K8/8182 ,  C08F2/10 ,  C08F220/60 ,  C08F226/10 ,  Y10S424/01 ,  Y10S424/02

    摘要： A process is described for making substantially homogeneous copolymers comprising 20-99% of vinyl pyrrolidone (VP) and 1-80% of N-3,3-dimethylaminopropyl methacrylamide, (DMAPMA), preferably 50-95% VP and 5-50% DMAPMA, and, most preferably, about 80:20, by weight, having a weight average molecular weight of about 200,000 to 1,500,000, as a clear, low viscosity aqueous solution of the homogeneous copolymer, at a 5-20% solids level, preferably about 10-15%, by weight of the solution, having a viscosity of about 5,000 to 80,000 cps, preferably about 10,000 to 70,000 cps. The solution obtained herein has lower viscosity and better clarity, and provides hair care products with enhanced curl retention (hold), when compared to non-homogeneous copolymers of the same composition, or related existing commercial products.

    摘要翻译： 描述了一种制备基本均匀的共聚物的方法，其包含20-99％的乙烯基吡咯烷酮（VP）和1-80％的N-3,3-二甲基氨基丙基甲基丙烯酰胺（DMAPMA），优选的是50-95％的VP和5-50％ DMAPMA，最优选约80:20（重量），重均分子量为约200,000至1,500,000，作为均匀共聚物的透明低粘度水溶液，固含量为5-20％ 约10-15重量％的溶液，其粘度为约5,000至80,000cps，优选约10,000至70,000cps。 本文获得的溶液具有较低的粘度和更好的透明度，并且与相同成分的非均相共聚物或相关的现有商品相比，提供具有增强的卷曲保持性（保持）的护发产品。

    Substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications
    6.
    发明授权
    Substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications 失效
    用于个人护理应用的乙烯基吡咯烷酮和N-3,3-二甲基氨基丙基甲基丙烯酰胺的基本均匀的共聚物

    公开(公告)号：US5609865A

    公开(公告)日：1997-03-11

    申请号：US365258

    申请日：1994-12-28

    申请人： Kou-Chang Liu ,  Lowell R. Anderson ,  Eugene E. Hardy ,  Yakir Reuven

    发明人： Kou-Chang Liu ,  Lowell R. Anderson ,  Eugene E. Hardy ,  Yakir Reuven

    IPC分类号： A61K8/81 ,  A61Q5/06 ,  C08F2/10 ,  C08F220/60 ,  C08F226/10 ,  A61K7/11

    CPC分类号： A61Q5/06 ,  A61K8/8182 ,  C08F2/10 ,  C08F220/60 ,  C08F226/10 ,  Y10S424/01 ,  Y10S424/02

    摘要： Substantially homogeneous copolymers comprising 20-99% of vinyl pyrrolidone (VP) and 1-80% of N-3,3-dimethylaminopropyl methacrylamide, (DMAPMA), preferably 50-95% VP and 5-50% DMAPMA, and, most preferably, about 80:20, by weight, having a weight average molecular weight of about 200,000 to 1,500,000, as a clear, low viscosity aqueous solution of the homogeneous copolymer, at a 5-20% solids level, preferably about 10-15%, by weight of the solution, having a viscosity of about 5,000 to 80,000 cps, preferably about 10,000 to 70,000 cps. The solution obtained herein has lower viscosity and better clarity, and provides hair care products with enhanced curl retention (hold), when compared to non-homogeneous copolymers of the same composition, or related existing commercial products.

    摘要翻译： 包含20-99％乙烯基吡咯烷酮（VP）和1-80％N-3,3-二甲基氨基丙基甲基丙烯酰胺（DMAPMA），优选50-95％VP和5-50％DMAPMA的基本上均匀的共聚物，最优选 约80:20重量百分比，重量平均分子量为约200,000至1,500,000，作为均匀共聚物的透明低粘度水溶液，固含量为5-20％，优选为约10-15％ 的溶液，其粘度为约5,000至80,000cps，优选约10,000至70,000cps。 本文获得的溶液具有较低的粘度和更好的透明度，并且与相同成分的非均相共聚物或相关的现有商品相比，提供具有增强的卷曲保持性（保持）的护发产品。