发明名称 |
POLYURETHANE POLYANHYDRIDE OLIGOMERS AND METHOD OF PREPARATION |
摘要 |
A polyurethane polyanhydride oligomer is disclosed as well as a process for its preparation. The process involves the following steps: (a) reacting a hydroxyl functional 2,4-dienoate ester with a polyisocyanate under conditions sufficient to react essentially all of the isocyanate groups to form a polyurethane polyene; and (b) reacting by Diels Alder addition the unsaturated double bonds of the polyurethane polyene with an unsaturated polycarboxylic acid anhydride containing material.
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申请公布号 |
CA2039806(C) |
申请公布日期 |
1997.09.30 |
申请号 |
CA19912039806 |
申请日期 |
1991.04.04 |
申请人 |
PPG INDUSTRIES, INC. |
发明人 |
SCHIMMEL, KARL F.;MARTZ, JONATHAN T.;WALTERS, DAVID N.;SUNDARARAMAN, PADMANABHAN |
分类号 |
C07D307/89;C08G18/67;C08G18/83;C09D175/00;C09D175/04;(IPC1-7):C07D307/83;C09D175/14 |
主分类号 |
C07D307/89 |
代理机构 |
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代理人 |
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