Search International and National Patent Collections

1. (WO2017033942) COLORED PARTICLE DISPERSION

Pub. No.:    WO/2017/033942    International Application No.:    PCT/JP2016/074561
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 24 01:59:59 CEST 2016
IPC: C09D 17/00
B41J 2/01
B41M 5/00
C09B 67/46
C09D 11/322
Applicants: KAO CORPORATION
花王株式会社
Inventors: MATSUMOTO, Yuuta
松本 雄大
Title: COLORED PARTICLE DISPERSION
Abstract:
(1) A colored particle dispersion containing colored particles and a neutralizing agent, wherein the colored particles are formed by performing, in the presence of a pigment, emulsion polymerization of a monomer mixture that includes a polymerizable monomer having an acid group, the neutralizing agent includes a water soluble amine compound, and the pH of the colored particle dispersion is 6-11. (2) A method for producing the colored particle dispersion containing colored particles and a neutralizing agent, said method having: step 1, in which a colored particle dispersion p is obtained by emulsion polymerizing, in the presence of a pigment, a monomer mixture that includes a polymerizable monomer having an acid group; step 2, in which a colored particle dispersion having a pH of 6-11 is obtained by mixing the colored particle dispersion p with a neutralizing agent that includes a water soluble amine compound. By using this colored particle dispersion in a water-based ink, it is possible to obtain printed matter that maintains superior preservation stability, exhibits superior discharge stability when the water content of the system has evaporated, and exhibits superior resistance to alcohol even when printed on a recording medium having low water absorbance.