| 发明名称 |
OPACIFYING POLYMER PARTICLES |
| 摘要 |
An aqueous dispersion of pigmented opacifying polymer particles, the particles comprising: i. an inorganic core comprising dispersed inorganic pigment particle and a dispersant ii. a first layer of base-swellable polymer comprising acid groups encapsulating the core iii. a second layer of non-base-swellable polymer encapsulating the first layer wherein the dispersant comprises or consists of hydroxyl moieties; and carboxyl groups derived from itaconic acid. |
| 申请公布号 |
US2015329736(A1) |
申请公布日期 |
2015.11.19 |
| 申请号 |
US201314652051 |
申请日期 |
2013.12.17 |
| 申请人 |
AKZO NOBEL COATINGS INTERNATIONAL B.V. |
发明人 |
WILLIAMS NEAL ST. JOHN;WHEELER Stephen Arthur;BRADLEY Robert David |
| 分类号 |
C09D133/12;C09D133/08;C09D133/02;C08K3/22 |
主分类号 |
C09D133/12 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An aqueous dispersion of pigmented opacifying polymer particles, the particles comprising:
i. an inorganic core comprising a dispersed inorganic pigment particle and a dispersant, ii. a first layer of a base-swellable polymer comprising acid groups encapsulating the core, and iii. a second layer of a non-base-swellable polymer encapsulating the first layer; wherein the dispersant is a polymer having a weight average molecular weight (Mw) of at least 1000 Daltons and comprises hydroxyl moieties, and carboxyl groups derived from itaconic acid. |
| 地址 |
Arnhem NL |
