发明名称 |
PROCESS FOR THE PRODUCTION OF POLYCARBONATE |
摘要 |
Polycarbonate having increased end-cap levels is made by adding an end-capping agent to the polycarbonate, preferably after the polycarbonate has reached a number-average molecular weight of about 2,000 to 15,000 Dalton. The end-capping agent has the formula:wherein R1 is a phenyl, phenoxy, benzyl, or benzyloxy and R2 is selected from the group consisting of C1-C30 alkyl, C1-C30 alkoxy, C6-C30 aryl, C6-C30 aryloxy, C7-C30 aralkyl, and C7-C30 aralkyloxy. |
申请公布号 |
EP1427770(A1) |
申请公布日期 |
2004.06.16 |
申请号 |
EP20020768525 |
申请日期 |
2002.08.13 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
BRACK, HANS-PETER;BRUNELLE, DANIEL, JOSEPH;CELLA, JAMES, ANTHONY;KARLIK, DENNIS;SHIMODA, TOMOAKI;IKEDA, AKIO;KIMURA, TAKATO |
分类号 |
C08G64/42;C08G64/14;C08G64/30 |
主分类号 |
C08G64/42 |
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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