发明授权
- 专利标题： Organic pigments derived from coumarin
- 专利标题（中）： 来自香豆素的有机颜料
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申请号： US65863申请日： 1979-08-13
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公开(公告)号： US4240967A公开(公告)日： 1980-12-23
- 发明人: Richard C. Bingham
- 申请人： Richard C. Bingham
- 申请人地址： DE Wilmington
- 专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人： E. I. Du Pont de Nemours and Company
- 当前专利权人地址： DE Wilmington
- 优先权： CAX321189 19790209; GBX4633/79 19790209
- 主分类号： C07D311/12
- IPC分类号： C07D311/12 ; C07D311/14 ; C07D311/92 ; C08K5/20 ; C09B57/02 ; C07D311/08
摘要：
This application is directed to compounds which are useful as pigments. The compounds are represented by the formula: ##STR1## where R.sub.1 is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, chlorine or bromine;R.sub.2 is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, chlorine, bromine and nitro; and ##STR2## where R.sub.4 and R.sub.5 are hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, chlorine or bromine.
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