发明名称 |
PARTIALLY FLUORINATED BIPHENYLS, PROCESSES FOR THEIR PREPARATION AND THEIR USE |
摘要 |
Compounds of the formula <IMAGE> (I) in which, independently of one another, each R is OH or lower alkyl having 1-4 carbon atoms and each R' is hydrogen or lower alkyl having 1-4 carbon atoms, are prepared by the condensation of partially fluorinated aromatic hydrocarbons in the presence of hydrogen fluoride or by the reductive coupling of partially fluorinated aromatic compounds. The compounds are used as a starting material for the preparation of partially fluorinated polycondensates.
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申请公布号 |
US5118874(A) |
申请公布日期 |
1992.06.02 |
申请号 |
US19910717910 |
申请日期 |
1991.06.20 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
APPEL, WOLFGANG;SIEGEMUND, GUENTER |
分类号 |
C07C22/08;C07C37/16;C07C39/367 |
主分类号 |
C07C22/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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