申请人:SHIMOHARA Norihide
公开号:US20110223395A1
公开(公告)日:2011-09-15
A pigment dispersion including: 2 to 35% by mass of a pigment (a); 10 to 30 parts by mass of a polymer (b) with respect to 100 parts by mass of the pigment (a), the polymer (b) containing 5 to 30% by mass of a repeating unit represented by the following Formula (1) and having a weight average molecular weight of 10000 to 200000; and 15 to 50 parts by mass of a graft copolymer (c) having a polyalkylene imine chain or a polyallylamine chain in a main chain thereof and a polyester chain in a side chain thereof with respect to 100 parts by mass of the pigment (a), in which a total of the contents of the polymer (b) and the graft copolymer (c) is in the range of 25 to 70 parts by mass with respect to 100 parts by mass of the pigment (a).
一种颜料分散液,包括:2-35%质量份的颜料(a);相对于100质量份的颜料(a),聚合物(b)10-30质量份,聚合物(b)含有由以下式(1)表示的重复单元的5-30%质量份,并且具有10000-200000的重均分子量;以及相对于100质量份的颜料(a),侧链中具有聚酯链的嫁接共聚物(c)15-50质量份,其中聚合物(b)和嫁接共聚物(c)的总含量相对于100质量份的颜料(a)在25-70质量份的范围内。