发明授权
- 专利标题： Production of dioxazine compound
- 专利标题（中）： 生产二恶嗪化合物
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申请号： US8790申请日： 1987-01-30
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公开(公告)号： US4751300A公开(公告)日： 1988-06-14
- 发明人: Taira Fujita , Yutaka Kayane
- 申请人： Taira Fujita , Yutaka Kayane
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人： Sumitomo Chemical Company, Limited
- 当前专利权人地址： JPX Osaka
- 优先权： JPX61-36103 19860219; JPX61-267163 19861110
- 主分类号： C07D498/22
- IPC分类号： C07D498/22 ; C09B19/02
摘要：
Dioxazine compound of the formula (I) mentioned below which is useful for dyes or pigments is prepared by heating a compound of ##STR1## in the presence of inorganic acid with or without an oxidizing agent in an inert organic solvent: ##STR2## wherein R is defined above; X.sub.1 and X.sub.2 are selected from a hydrogen atom and a chlorine atom.
公开/授权文献
- USD356210S Pouch for containing prayers and supplications 公开/授权日：1995-03-14
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