Polymeric pigment dispersant having an acrylic backbone, polyester side
chains, cyclic imide groups and quaternary ammonium groups
    2.
    发明授权
    Polymeric pigment dispersant having an acrylic backbone, polyester side chains, cyclic imide groups and quaternary ammonium groups 有权
    具有丙烯酸主链,聚酯侧链,环状酰亚胺基和季铵基的聚合颜料分散剂

    公开(公告)号:US6037414A

    公开(公告)日:2000-03-14

    申请号:US145656

    申请日:1998-09-02

    摘要: A polymeric pigment dispersant of a graft polymer having an acrylic polymer backbone and pending from the backbone, polyester side chains, cyclic imide groups and quaternary ammonium groups and the polymer having a calculated number average molecular weight of 8,000-50,000; wherein the graft copolymer is composed of(a) 10-50%, by weight of the of the graft polymer, of an acrylic copolymer backbone having a number average molecular weight of 2500-10,000 which, before reaction, contains 25-75% by weight of polymerized oxirane containing monomers;(b) 20-85%, by weight of the graft polymer, of a polyester copolymer, or mixture of different polyester copolymers, having a number average molecular weight of 500-10,000 which polyester copolymer is carboxylic-acid functional and is attached to the backbone by a reaction of the carboxylic acid functional group with oxirane group of the backbone;(c) 1-16%, by weight of the graft polymer, of cyclic imide groups attached to the backbone by a reaction of the imide group with the oxirane group of the backbone and(d) 0.2-17%, by weight of the graft polymer, of quaternary ammonium groups.

    摘要翻译: 具有丙烯酸聚合物主链并且可以从骨架,聚酯侧链,环状酰亚胺基团和季铵基团悬挂的接枝聚合物的聚合颜料分散剂,并且所述聚合物具有计算的数均分子量为8,000-50,000; 其中所述接枝共聚物由(a)10-50重量%的所述接枝聚合物的数均分子量为2500-10,000的丙烯酸共聚物主链组成,其在反应之前含有25-75%的 聚合环氧乙烷单体的重量; (b)接枝聚合物的20-85重量%的聚酯共聚物或不同聚酯共聚物的混合物,其数均分子量为500-10,000,该聚酯共聚物是羧酸官能的并且连接到 骨架通过羧酸官能团与骨架的环氧乙烷基团的反应; (c)接枝聚合物重量的1-16%,通过酰亚胺基团与主链的环氧乙烷基团的反应连接到主链上的环状酰亚胺基团,和(d)0.2-17%重量的 接枝聚合物,季铵基团。