| 发明名称 |
Preparation of cationic methine dyestuffs |
| 摘要 |
A method of preparation of cationic dyestuffs having the formula <IMAGE> wherein A, B, R, and R1 are defined in the specification carried out in the substantial absence of solvent and removing water formed in the reaction.
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| 申请公布号 |
US4513142(A) |
申请公布日期 |
1985.04.23 |
| 申请号 |
US19820412644 |
申请日期 |
1982.08.30 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
RAUE, RODERICH;HUEHNE, VOLKER;KUEHLTHAU, HANS-PETER |
| 分类号 |
C09B23/00;C09B23/06;C09B23/10;C09B23/14;(IPC1-7):C09B23/00 |
主分类号 |
C09B23/00 |
| 代理机构 |
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| 主权项 |
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| 地址 |
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