公开(公告)号：US11077692B2

公开(公告)日：2021-08-03

申请号：US16635098

申请日：2018-07-27

Applicant: KAO CORPORATION

Inventor： Takayuki Suzuki ,  Takako Yamamoto ,  Erika Maekawa ,  Yasufumi Ueda

IPC: B41M5/00 ,  C08F220/18 ,  C08F212/08 ,  C08F220/06 ,  C08J3/07 ,  C09C1/56 ,  C09C3/10 ,  C09D11/107 ,  C09D11/322 ,  C09D11/326 ,  C09D11/38 ,  B41J2/01 ,  B41J2/21

Abstract: The present invention relates to a pigment water dispersion containing a pigment, a crosslinked polymer and water, in which the crosslinked polymer is prepared by crosslinking a carboxy group-containing polymer with a crosslinking agent, and has an acid value of not less than 70 mgKOH/g and not more than 300 mgKOH/g; and the pigment water dispersion further contains a formaldehyde-releasing compound. The pigment water dispersion of the present invention is excellent in storage stability even when being stored under high-temperature conditions for a long period of time.