发明授权
US4701567A Process for producing
6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane
失效
制备6,6'-二羟基-3,3,3',3'-四甲基-1,1'-螺二茚满的方法
- 专利标题: Process for producing 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane
- 专利标题(中): 制备6,6'-二羟基-3,3,3',3'-四甲基-1,1'-螺二茚满的方法
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申请号: US878687申请日: 1986-06-26
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公开(公告)号: US4701567A公开(公告)日: 1987-10-20
- 发明人: Yoshimitsu Tanabe , Keizaburo Yamaguchi , Yukihiro Yoshikawa , Kenichi Sugimoto , Akihiro Yamaguchi
- 申请人: Yoshimitsu Tanabe , Keizaburo Yamaguchi , Yukihiro Yoshikawa , Kenichi Sugimoto , Akihiro Yamaguchi
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX60-140406 19850628; JPX60-149166 19850709
- 主分类号: C07C35/44
- IPC分类号: C07C35/44 ; C07C37/11 ; C07C39/17 ; C07C39/12
摘要:
A novel process for producing 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane of the formula (1) ##STR1## which comprises heat-treating 2,2-bis(4-hydroxyphenyl)propane in the presence of a superacid-type resin or a perfluoroalkanesulfonic acid.
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