发明名称 |
PROCESS FOR PREPARING TRANSPARENT/SEMI-TRANSPARENT COLOR DISPERSIONS AND THE COLOR DISPERSIONS MADE THEREOF |
摘要 |
This invention relates to a process for preparing color dispersions comprising a first step of contacting water, a first colorant, and a polysaccharide selected from methylcellulose, hydropropylmethylcellulose, hydroxyethylmethylcellulose, hydroxybutylmethylcellulose, hydroxyethylethylcellulose, and the mixture thereof, to form a first colorant dispersion; a second step of contacting the first colorant dispersion with a protective composition comprising an aqueous dispersion of polymer particles, clay, and a peptizing agent to form a dispersion of protected first colorant particles; an optional third step of repeating the first step and the second step with a second colorant that is different from the first colorant to form a dispersion of protected second colorant particles; and an optional fourth step of mixing the dispersions of protected first and second colorant particles to form a multi-color dispersion. This invention also relates to a color dispersion comprising the first colorant dispersion, and a color coating comprising the color dispersion. |
申请公布号 |
US2015065618(A1) |
申请公布日期 |
2015.03.05 |
申请号 |
US201414477298 |
申请日期 |
2014.09.04 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC ;ROHM AND HAAS COMPANY |
发明人 |
Yun Dong;Wang Yujiang;Liu Hui;Wang Caifeng;Jiang Siyuan |
分类号 |
C09D133/00;C09D101/28 |
主分类号 |
C09D133/00 |
代理机构 |
|
代理人 |
|
主权项 |
1. A transparent/semi-transparent color dispersion comprising a first colorant dispersion comprising based on total weight of the first colorant dispersion, from 0.05 wt. % to 10 wt. % of a first colorant; from 0.05 wt. % to 10 wt. % of a polysaccharide selected from methylcellulose, hydropropylmethylcellulose, hydroxyethylmethylcellulose, hydroxybutylmethylcellulose, hydroxyethylethylcellulose, and the mixture thereof, and water. |
地址 |
Midland MI US |