| 发明名称 |
OXIDATION PROCESS FOR PREPARING QUINACRIDONE PIGMENTS |
| 摘要 |
<p>The present invention relates to a process of preparing quinacridone by oxidizing a 6,13-dihydroquinacridone salt corresponding to the quinacridone pigment with hydrogen peroxide as the oxidizing agent in the presence of 2,7-anthraquinone disulfonic acid as catalyst. The inventive process is economical and environmentally friendly and yields high performance quinacridone pigments in a high yield.</p> |
| 申请公布号 |
WO2004007623(A1) |
申请公布日期 |
2004.01.22 |
| 申请号 |
WO2003EP07337 |
申请日期 |
2003.07.08 |
| 申请人 |
CIBA SPECIALTY CHEMICALS HOLDING INC.;BAEBLER, FRIDOLIN;MERSTETTER, HANS, RUDOLF |
发明人 |
BAEBLER, FRIDOLIN;MERSTETTER, HANS, RUDOLF |
| 分类号 |
C07B61/00;C07D471/04;C07D471/02;C09B48/00;C09B67/52;(IPC1-7):C09B48/00 |
主分类号 |
C07B61/00 |
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