| 发明名称 |
Quinacridone pigment |
| 摘要 |
A new polymorphic form of 2,9-dichloroquinacridone having improved pigmentary properties and a method of forming said 2,9-dichloroquinacridone comprising the step of ring closure of appropriately substituted terephthalic acid in sulphuric acid.
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| 申请公布号 |
US6465652(B1) |
申请公布日期 |
2002.10.15 |
| 申请号 |
US20000633223 |
申请日期 |
2000.08.07 |
| 申请人 |
CLARIANT FINANCE (BVI) LIMITED |
发明人 |
BRIQUET ANNE;KAUL BANSI LAL |
| 分类号 |
C09B48/00;C09B67/52;(IPC1-7):C07D471/00;C07D471/22 |
主分类号 |
C09B48/00 |
| 代理机构 |
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代理人 |
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