| 发明名称 |
OXIDATION PROCESS FOR PREPARING HIGHLY DISPERSIBLE QUINACRIDONE PIGMENTS |
| 摘要 |
<p>A process for the preparation of a quinacridone comprises oxidation of a 6,13-dihydroquinacridone using hydrogen peroxide, wherein a polymeric dispersant is present in the oxidation reaction mixture. The resulting pigment products exhibit greatly improved dispersibility relative to pigments in which the polymeric dispersant is not present during the oxidation reaction.</p> |
| 申请公布号 |
WO2004063284(A1) |
申请公布日期 |
2004.07.29 |
| 申请号 |
WO2003EP51078 |
申请日期 |
2003.12.19 |
| 申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC. |
发明人 |
SCHAEDELI, ULRICH;JAFFE, EDWARD EPHRAIM;SNYDERALLEN, LINDA |
| 分类号 |
C09B48/00;(IPC1-7):C09B48/00 |
主分类号 |
C09B48/00 |
| 代理机构 |
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