发明名称 |
Method for making polyetherimides using carboxylic acid salts of alkali metals or zinc as catalysts |
摘要 |
A method is provided for enhancing the rate of formation of polyetherimides under melt or solution polymerization conditions by using either an alkali metal carboxylic acid salt, or a zinc carboxylic acid salt as a catalyst. The aforementioned catalysts are employed in a polymerization mixture of aromatic bis(ether anhydride) and an organic diamine.
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申请公布号 |
US4293683(A) |
申请公布日期 |
1981.10.06 |
申请号 |
US19800168660 |
申请日期 |
1980.07.11 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
TAKEKOSHI, TOHRU;KLOPFER, HOWARD J. |
分类号 |
C08G73/10;(IPC1-7):C08G69/04 |
主分类号 |
C08G73/10 |
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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