发明授权
- 专利标题： Process for the preparation of polyhydric phenols
- 专利标题（中）： 多元酚的制备方法
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申请号： US857622申请日： 1977-12-05
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公开(公告)号： US4182917A公开(公告)日： 1980-01-08
- 发明人: Hermann Seifert , Helmut Waldmann , Wulf Schwerdtel , Wolfgang Swodenk
- 申请人： Hermann Seifert , Helmut Waldmann , Wulf Schwerdtel , Wolfgang Swodenk
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX2658943 19761224
- 主分类号： C07C27/00
- IPC分类号： C07C27/00 ; C07C37/00 ; C07C37/60 ; C07C39/08 ; C07C67/00
摘要：
A process has been invented for the preparation of pyrocatechol and hydroquinone which comprises reacting a solution which is substantially anhydrous and free from hydrogen peroxide, of a percarboxylic acid in an inert, organic solvent, with phenol at temperatures from -10.degree. C. to 80.degree. C.The compounds obtained according to the invention are known, important industrial chemicals which are used in large amounts in the field of photography and of dyestuffs and plastics and in the field of scents and flavorings.
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