| 发明名称 | Process for preparing self-binding pigment particles | ||
| 摘要 | The present invention relates to a process for preparing self-binding pigment particles from an aqueous mineral pigment material suspension having a solid content of 45 to 80 wt.-%, based on the total weight of the suspension. | ||
| 申请公布号 | US9365723(B2) | 申请公布日期 | 2016.06.14 |
| 申请号 | US201214005940 | 申请日期 | 2012.03.22 |
| 申请人 | Omya International AG | 发明人 | Gane Patrick A. C.;Buri Matthias;Rentsch Samuel;Bridy Julie |
| 分类号 | C09C1/02;D21H17/00;D21H17/26;D21H17/69 | 主分类号 | C09C1/02 |
| 代理机构 | Amster, Rothstein & Ebenstein LLP | 代理人 | Amster, Rothstein & Ebenstein LLP |
| 主权项 | 1. A process for preparing self-binding pigment particles comprising the following steps: a) providing an aqueous mineral pigment material suspension, wherein the mineral pigment comprises calcium carbonate; b) providing at least one polymeric binder, wherein the binder comprises at least one carboxymethylcellulose having a degree of carboxylation in the range of 0.4 to 2.0 and having an intrinsic viscosity in the range of 3 to 300 ml/g; c) mixing the binder of step b) with the aqueous mineral pigment material suspension of step a) so that binder is present in the suspension in an amount from 0.1 to 10.0 wt.-% and the resulting suspension has a solids content of from 45 to 80 wt.-%, based on the total weight of the suspension; and d) grinding the resulting suspension of step c) to obtain a suspension of self-binding pigment particles. | ||
| 地址 | Oftringen CH | ||