发明名称 |
Diaminoalkylene quaternary ammonium salts, method for their preparation and use |
摘要 |
<p>Diaminoalkyl quaternary ammonium salts are prepared by the reaction of alkyl halides with tertiary diamines having C<Sub>2-20</Sub> primary alkyl radicals attached to nitrogen and an alkyl radical between the two nitrogen atoms in which at least three carbon atoms separate said nitrogen atoms. Said salts are preferably substantially free from corresponding diamines. They are useful as catalysts for interfacial polycarbonate preparation by the reaction of phosgene with at least one dihydroxyaromatic compound. Polycarbonate preparation using such catalysts is economical in phosgene consumption, is accompanied by a rapid conversion of chloroformate groups to desirable species and affords a product with a very low proportion of unreacted dihydroxyaromatic compound.</p> |
申请公布号 |
EP0877014(A2) |
申请公布日期 |
1998.11.11 |
申请号 |
EP19980303215 |
申请日期 |
1998.04.24 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BRUNELLE, DANIEL JOSEPH;PHELPS, PETER DAVID;BODEN, EUGENE PAULING;NELSON, MARK ERIK;FLOWERS, LARRY IVIS;SYBERT, PAUL DEAN;CAPELLE, ERIK HENDRIK ADRIAAN |
分类号 |
C07D295/02;B01J31/02;C07B61/00;C07C68/02;C07C69/96;C07C209/12;C07C211/63;C07D295/13;C08G64/22;C08G64/24;(IPC1-7):C07C211/63;C08G63/87 |
主分类号 |
C07D295/02 |
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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