发明授权
- 专利标题： Doubled triphenylmethane dyes having bis acylpiperazine linkage
- 专利标题（中）： 具有双酰基哌嗪键的双重三苯甲烷染料
-
申请号： US521382申请日： 1990-05-10
-
公开(公告)号： US5051504A公开(公告)日： 1991-09-24
- 发明人: Erwin Hahn , Walter Breitschaft , Udo Mayer , Gunter-Rudolf Schroeder
- 申请人： Erwin Hahn , Walter Breitschaft , Udo Mayer , Gunter-Rudolf Schroeder
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX3917601 19890531
- 主分类号： C07D295/18
- IPC分类号： C07D295/18 ; C07D295/185 ; C09B11/00 ; C09B11/10 ; C09B11/12 ; C09B11/16 ; C09B11/18 ; D06P1/42 ; D21H21/28
摘要：
Triphenylmethane dyes of the formula ##STR1## where each R.sup.1 is independently of the others hydrogen or substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, or two R.sup.1 radicals together with the nitrogen atom joining them form a heterocyclic radical,R.sup.2 and R.sup.5 is independently of the others hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.3 and R.sup.4 is independently of the others hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,An.sup..crclbar. is one equivalent of an anion, andn is 1 or 2,preparable from piperazine derivatives as intermediates, are useful for coloring paper.