This invention relates to use of a copolymer of a high acid value macromonomer which is obtained through copolymerization of specific monomeric components including methacrylic acid in the presence of a metal complex which is a catalytic chain transfer agent or an addition cleavage-type chain transfer agent, and optionally a radical-polymerization initiator, or this macromonomer into which a polymerizable unsaturated group is further introduced, with an ethylenically unsaturated monomer; and said copolymer into which further a long chain alkyl group is introduced; as pigment-dispersing resins to be used in water-based paint.
本发明涉及一种高酸值大单体与
乙烯基不饱和单体的共聚物的用途,该高酸值大单体是在催化链转移剂或加成裂解型链转移剂的
金属络合物以及自由基聚合
引发剂的存在下,通过包括
甲基丙烯酸在内的特定单体成分的共聚而得到的,或者是进一步引入了可聚合的不饱和基团的该大单体与
乙烯基不饱和单体的共聚物;以及进一步引入长链烷基的共聚物;作为
颜料分散
树脂用于
水性涂料。