This invention relates to a process for preparing pigment compositions comprising
(a) treating an organic pigment with
(1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine,
(2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and
(3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble,
thereby forming a suspension of the surface-treated pigment composition in the liquid;
(b) exposing the suspension to cavitating conditions; and
(c) collecting the pigment composition.
本发明涉及一种制备
颜料组合物的工艺,包括
(a) 用以下物质处理
有机颜料
(1) 以
有机颜料的重量计,约 0.1%至约 100%的立体受阻胺和/或大体积
伯胺、
(2) 相对于
有机颜料,0 至约 100% 重量的表面活性剂,以及
(3) 以
有机颜料的重量计,每份
有机颜料含有约 5 至约 15 份
有机颜料基本不溶于其中的液体、
从而在液体中形成表面处理过的
颜料组合物的悬浮液;
(b) 将悬浮液置于空化条件下;以及
(c) 收集
颜料组合物。