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    WATER-SOLUBLE COPOLYMER HAVING ALKYL-MODIFIED CARBOXYL GROUP
    16.
    发明公开
    WATER-SOLUBLE COPOLYMER HAVING ALKYL-MODIFIED CARBOXYL GROUP 有权
    WASSERLÖSLICHES共聚物麻醉剂烷基聚糖碳纤维素

    公开(公告)号：EP1950231A1

    公开(公告)日：2008-07-30

    申请号：EP06823330.3

    申请日：2006-11-13

    申请人： SUMITOMO SEIKA CHEMICALS CO., LTD.

    发明人： YOSHINAKA, Masatoyo ,  KOBAYASHI, Shinji ,  MORIMITSU, Yuichiro

    IPC分类号： C08F220/06 ,  C09K3/00

    CPC分类号： C08F220/06 ,  C08F220/18

    摘要： The present invention provide a water-soluble copolymer having alkyl-modified carboxyl groups which is able to produce a neutralized viscous liquid in which although its viscosity is very low when no electrolyte exists, the viscosity greatly increases when electrolytes are added, which has a high viscosity and a high transmittance and which has moist textures without stickiness even in the presence of a relatively high concentration of electrolytes, and a thickening agent comprising the same. More specifically, the present invention provides a water-soluble copolymer having alkyl-modified carboxyl groups which is obtained by polymerizing 100 parts by weight of (meth)acrylic acid, 0.5-5 parts by weight of alkyl (meth)acrylate comprising an alkyl group having a carbon number of 18-24, and 0-0.1 parts by weight of a compound having two or more of ethylenic unsaturated groups, wherein a 1 weight %-neutralized viscous liquid shows a viscosity of 1500 mPa·s or lower and a transmittance of 90 % or higher, and when 0.25-5 parts by weight of sodium chloride is added to 100 parts by weight of the neutralized viscous liquid, the liquid shows a highest viscosity of 15000-40000 mPa·s and a transmittance of 90 % or higher, and a thickening agent comprising the same.

    摘要翻译： 本发明提供具有烷基改性羧基的水溶性共聚物，其能够产生中和的粘稠液体，其中当不存在电解质时其粘度非常低，当加入电解质时，粘度大大增加，其具有高的 粘度和高透射率，并且即使在存在相对高浓度的电解质的情况下也具有无粘性的湿润纹理，以及包含该电解质的增稠剂。 更具体地说，本发明提供一种具有烷基改性羧基的水溶性共聚物，其通过使100重量份的（甲基）丙烯酸，0.5-5重量份的包含烷基的（甲基）丙烯酸烷基酯 碳原子数为18〜24，0〜0.1重量份具有2个以上烯属不饱和基团的化合物，其中1重量％中和粘稠液体的粘度为1500mPa·s以下，透射率 为90％以上，当向100重量份中和的粘稠液体中加入0.25-5重量份氯化钠时，液体的粘度最高为15000-40000mPa·s，透光率为90％以上 更高，和包含该增稠剂的增稠剂。