发明名称 |
Quaternary bisphenolates as phase transfer catalysts |
摘要 |
Quatemary salts having a double helix structure are prepared by the reaction of dihydroxyaromatic compound, preferably a bisphenol, with an alkali metal hydroxide and a quatemary salt, such as a tetraalkylammonium or hexaalkylguanidinium chloride. The quatemary salts and their alkaline hydrolysis products are useful as catalysts in various reactions, including imide formation from bisphenol salts and halo- or nitro-substituted phthalimides and redistribution and equilibration of polycarbonates. |
申请公布号 |
EP0819469(A3) |
申请公布日期 |
1998.05.06 |
申请号 |
EP19970304942 |
申请日期 |
1997.07.07 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
WEBB, JIMMY LYNN;LITTLEJOHN, MATTHEW HAL;CARINGI, JOSEPH JOHN;GUGGENHEIM, THOMAS;NICK, ROBERT JOSEPH;MCCLOSKEY, PATRICK JOSEPH;KING, JOSEPH ANTHONY, JR. |
分类号 |
B01J31/02;C07C277/08;C07C279/02;C07C319/20;C07C323/20;C07F9/54;C08G64/20;C08G64/30;C08G65/34 |
主分类号 |
B01J31/02 |
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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