| 发明名称 |
METHOD FOR MANUFACTURING AQUEOUS BLACK PIGMENT DISPERSION |
| 摘要 |
A method for manufacturing an aqueous black pigment dispersion, including the steps of subjecting a mixture containing carbon black and an aqueous medium to media-less dispersion and adding a resin having anionic groups and a basic compound after the dispersion, wherein the carbon black has a carboxylic acid group on the surface such that the value produced by dividing the amount of carboxylic acid group present on the surface by BET value is 0.8 to 5.5 (μmol/m2) and the resin having anionic groups is an urethane resin that satisfies (weight average molecular weight/acid value)<1,400 or a styrene acrylic resin that satisfies (weight average molecular weight/acid value)<120. |
| 申请公布号 |
US2017002224(A1) |
申请公布日期 |
2017.01.05 |
| 申请号 |
US201515113097 |
申请日期 |
2015.01.22 |
| 申请人 |
DIC CORPORATION |
发明人 |
Shimamura Yoshinosuke;Toshimitsu Mariko;Nabe Takaaki;Sato Yoshihiro |
| 分类号 |
C09D17/00;C09D11/037;C09D125/14;C09C1/56;C09D175/04;C09D11/104;C09D11/326 |
主分类号 |
C09D17/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for manufacturing an aqueous black pigment dispersion, comprising the steps of subjecting a mixture containing carbon black and an aqueous medium to media-less dispersion and adding a resin having anionic groups and a basic compound after the dispersion,
wherein the carbon black has a carboxylic acid group on the surface such that the value produced by dividing the amount of carboxylic acid group present on the surface by BET value is 0.8 to 5.5 (μmol/m2), and the resin having anionic groups is an urethane resin that, satisfies (weight average molecular weight/acid value)<1,400 or a styrene acrylic resin that satisfies (weight average molecular weight/acid value)<120. |
| 地址 |
Tokyo JP |
