发明授权
- 专利标题： Preparation of polyaryl ethers with nitrogen compound catalysts
- 专利标题（中）： 用氮化合物催化剂制备聚芳醚
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申请号： US932991申请日： 1992-08-20
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公开(公告)号： US5298592A公开(公告)日： 1994-03-29
- 发明人: Alexander Aumueller , Wolfgang Eberle , Gerhard Heinz , Bernd Hupfeld , Christiane Husemann , Juergen Koch , Helmut Reichelt
- 申请人： Alexander Aumueller , Wolfgang Eberle , Gerhard Heinz , Bernd Hupfeld , Christiane Husemann , Juergen Koch , Helmut Reichelt
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX4127507 19910829; DEX4131143 19910919
- 主分类号： C08G65/40
- IPC分类号： C08G65/40 ; C08G75/23
摘要：
A process for preparing polyaryl ethers of the formula I or Ia ##STR1## by condensation of at least one appropriate bisphenol with at least one appropriate aromatic dichloride in the presence of an alkali metal carbonate in a dipolar aprotic solvent, is carried out in the presence of a catalyst selected from the alkali metal nitrites and the group of compounds of the formula II ##STR2## where r.sup.1 and r.sup.3 are each hydrogen, C.sub.7 -C.sub.16 -phenylalkyl, C.sub.1 -C.sub.12 -alkoxy, fluorine, chlorine, bromine, iodine or nitro, and R.sup.2 is nitro or nitroso, or ##STR3## where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine, bromine or iodine.