发明授权
US4780533A Disazo pigments having improved heat resistance using lower alkyl and
phenyl esters of acetoacetanilide
失效
使用乙酰乙酰苯胺的低级烷基和苯基酯改善耐热性的双偶氮颜料
- 专利标题： Disazo pigments having improved heat resistance using lower alkyl and phenyl esters of acetoacetanilide
- 专利标题（中）： 使用乙酰乙酰苯胺的低级烷基和苯基酯改善耐热性的双偶氮颜料
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申请号： US12377申请日： 1987-02-09
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公开(公告)号： US4780533A公开(公告)日： 1988-10-25
- 发明人: Naonori Takami , Tetsuo Fukuda , Takeshi Uehara
- 申请人： Naonori Takami , Tetsuo Fukuda , Takeshi Uehara
- 申请人地址： JPX Tokyo
- 专利权人： Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- 当前专利权人： Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-028917 19860214
- 主分类号： C09B67/22
- IPC分类号： C09B67/22 ; C09B35/10 ; C09B67/20 ; C09B35/08 ; C09B41/00 ; C09D11/08
摘要：
A disazo pigment is prepared by coupling the tetrazo compound of 3,3'-dichlorobenzidine with an acetoacetanilide compound which is other than those represented by the below-described general formula (I) and is free of water-soluble groups. In the present invention, about 0.5-50 mole % of the acetoacetanilide compound is replaced by a compound represented by the following general formula (I): ##STR1## wherein R means a methyl, ethyl, propyl or butyl group or a substituted or unsubstituted phenyl group.