| 发明名称 |
Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester |
| 摘要 |
Azo disperse dyestuffs are prepared by diazotization and coupling in an aqueous phase, the coupling being carried out in the presence of an ester of a lower aliphatic carboxylic acid.
|
| 申请公布号 |
US4795807(A) |
申请公布日期 |
1989.01.03 |
| 申请号 |
US19870031530 |
申请日期 |
1987.03.30 |
| 申请人 |
CASSELLA AKTIENGESELLSCHAFT |
发明人 |
BUEHLER, ULRICH;SCHOPHOFF, FRIEDRICH;WEIDEMUELLER, WOLF |
| 分类号 |
C09B41/00;C09B67/00;C09B67/22;(IPC1-7):C09B41/00;C09B67/48;C09B67/54 |
主分类号 |
C09B41/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
