发明名称 |
PROCESS FOR THE PREPARATION OF POLYCARBONATE AND/OR POLYARYLATE BLOCK COPOLYMERS WITH POLY(ARYL ETHERS) |
摘要 |
The invention describes a novel process for the preparation of polycarbonate and/or polyarylate block copolymers with poly(aryl ethers). The process is comprised of steps: (a) the reaction of a dihydroxy-terminated poly(aryl ether) oligomer with a high molecular weight polycarbonate, or a high molecular weight polyarylate, or a high molecular weight poly(arylate-carbonate) to yield a block copolymer; followed by (b) the coupling of the material obtained in step (a) to the required molecular weight, using a diaryl ester of carbonic acid or of a dicarboxylic acid. Both steps are performed in the presence of a catalyst. The copolymerizations can be run in bulk under vacuum in a single or twin screw extruder. Using the above conditions high molecular weight, high quality block copolymers having a combination of excellent properties are obtained in a matter of minutes.
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申请公布号 |
CA2030560(C) |
申请公布日期 |
1996.11.19 |
申请号 |
CA19902030560 |
申请日期 |
1990.03.28 |
申请人 |
AMOCO CORPORATION |
发明人 |
MATZNER, MARKUS;KWIATKOWSKI, GEORGE THOMAS;CLENDINNING, ROBERT ANDREW;SAVARIAR, SELVARAJ;EL-HIBRI, MOHAMMAD JAMAL;MERRIAM, CHARLES NEALE;COTTER, ROBERT JAMES |
分类号 |
C08G65/40;C08G63/64;C08G63/66;C08G64/00;C08G64/18;C08G64/42;C08G65/28;C08G75/00;C08G75/23;C08G81/00;(IPC1-7):C08G81/00;C08G63/672 |
主分类号 |
C08G65/40 |
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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