发明名称 |
4-aralkyl-2-nitro-2'-hydroxy-3',5'-dialkyl (or cumyl)-azobenzenes |
摘要 |
4-Aralkyl-2-nitro-2'-hydroxy-3',5'-dialkyl (or cumyl)-azobenzenes are made by coupling the corresponding diazotized 4-aralkyl-o-nitroaniline with the corresponding phenol. These azobenzene intermediates are used to prepare the corresponding 2H-benzotriazole UV absorber stabilizers substituted on the 5-position of the benzo ring by an aralkyl group, preferably alpha,alpha-dimethylbenzyl.
|
申请公布号 |
US4891424(A) |
申请公布日期 |
1990.01.02 |
申请号 |
US19880176557 |
申请日期 |
1988.04.01 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
SELTZER, RAYMOND;WINTER, ROLAND A. E. |
分类号 |
C07D249/20;C08K5/3475 |
主分类号 |
C07D249/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|