发明名称 |
SULFONATED POLYIMIDES AND POLYAMIC ACIDS AND METHOD FOR THEIR PREPARATION |
摘要 |
Sulfonate polyimides and polyamic acids, particularly polyetherimides, are prepared by reacting the unsulfonated polymer with a mild sulfonating agent. Illustrative sulfonating agents are the complexes of sulfur trioxide and trialkyl or triaryl phosphates, especially the sulfur trioxide-triethyl phosphate complex having a molar ratio of sulfur trioxide to triethyl phosphate of 2:1. |
申请公布号 |
WO8603758(A1) |
申请公布日期 |
1986.07.03 |
申请号 |
WO1985US02471 |
申请日期 |
1985.12.17 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
YATES, JOHN, BENNIE, III;SMITH, DAVID, JOHN |
分类号 |
C08G73/10;(IPC1-7):C08G73/10 |
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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