PIGMENT DISPERSION, AND INK COMPOSITION, CURABLE COMPOSITION AND CURABLE INK COMPOSITION PRODUCED WITH PIGMENT DISPERSION
申请人:SHIMOHARA Norihide
公开号:US20100240825A1
公开(公告)日:2010-09-23
The present invention provides a pigment dispersion, including: (a) a pigment; and (b) a polymer compound as a dispersant for the pigment (a), wherein the polymer compound includes a urethane bond in a main chain, includes a pendant moiety containing a skeleton which is the same as a partial skeleton of the pigment (a), and further includes, at a side chain, at least one polymer chain selected from the group consisting of a polyester chain, a poly(meth)acrylate chain, and a polyalkylene oxide chain, and wherein the molecular weight of the skeleton which is the same as a partial skeleton of the pigment (a) is from 20 to 70% of the molecular weight of the pigment (a).
本发明提供了一种颜料分散体,包括:(a)一种颜料;以及(b)作为颜料(a)的分散剂的聚合物化合物,其中聚合物化合物在主链中包含脲键,包含一个含有颜料(a)的部分骨架的挂链基团,进一步在侧链中包含选自聚酯链、聚(甲基)丙烯酸酯链和聚烷基氧化物链的至少一种聚合物链,其中与颜料(a)的部分骨架相同的骨架的分子量为颜料(a)的分子量的20至70%。