基本信息:
- 专利标题：
- 申请号：DE69225177 申请日：1992-08-07
- 公开(公告)号：DE69225177D1 公开(公告)日：1998-05-28
- 发明人： BUGNON PHILIPPE , IQBAL ABUL , MACLENNAN ALISON , FRASER IAIN FRANK
- 申请人： CIBA GEIGY AG
- 专利权人： CIBA GEIGY AG
- 当前专利权人： CIBA GEIGY AG
- 优先权： GB9117765 1991-08-16
- 主分类号： C09B67/08
- IPC分类号： C09B67/08 ; C09B67/20 ; C09B67/46
摘要：
A method of improving the storage stability of a coloured organic pigment in powder form which comprises coating pigment particles with a solid polymer which is a polar group - containing vinyl polymer, said polar group being a hydroxy, carboxyl, carboxylic ester, anhydride or carboxamide group, or a cellulosic polymer, thereby inhibiting reduction of tinting strength of the pigment on storage.
公开/授权文献:
- DE69225177T2 公开/授权日：1998-10-22