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A Polymeric Pigment Dispersant having an Acrylic Backbone, Polyester Side Chains, Cyclic Imide Groups and Quaternary Ammonium Groups
A Polymeric Pigment Dispersant having an Acrylic Backbone, Polyester Side Chains, Cyclic Imide Groups and Quaternary Ammonium Groups
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机译:具有丙烯酸主链,聚酯侧链,环状酰亚胺基团和季铵基团的聚合物颜料分散剂
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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.
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