| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a processed pigment and the like, suppressing secondary aggregate formation to be dispersed in the primary particle state, and capable of stably keeping the state of the primary particles even after dispersed. <P>SOLUTION: The processed pigment is provided by covering a pigment with a polymer compound having a basic nitrogen atom. The polymer compound having a basic nitrogen atom is at least one polymer compound selected from following (1) to (4). (1) is poly(alkylene imine) having a 2-6C alkylene group, (2) is polyallylamine, (3) is polyvinylamine, and (4) is a polymer compound containing a constituent unit derived from one or more monomers selected from a (meth)acrylate ester having a basic nitrogen atom at the ester moiety, vinylpyridine, and aminostyrene. <P>COPYRIGHT: (C)2010,JPO&INPIT |
