发明名称 |
REGENERATION OF POLYVALENT METAL DICARBOXYLATE CATALYST FOR CARBON DIOXIDE-EPOXIDE COPOLYMERIZATION |
摘要 |
<p>A process is provided for regenerating a polyvalent metal dicarboxylate catalyst used in copolymerizing carbon dioxide with epoxides to form poly(alkylene carbonates). The catalyst is a polyvalent metal dicarboxylate and the regeneration procedure involves contacting spent or deactivated catalyst with dicarboxylic acid, preferably in a slurry. In one aspect the copolymerization is carried out and catalyst is separated from the polymerization mixture, reactivated with the dicarboxylic acid, such as glutaric or adipic acid, and reused in copolymerization to form poly(alkylene carbonate).</p> |
申请公布号 |
EP0393390(A3) |
申请公布日期 |
1991.04.03 |
申请号 |
EP19900105812 |
申请日期 |
1990.03.27 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
CARROLL, WILLIAM EAMON;MOTIKA, STEPHEN ANDREW |
分类号 |
B01J31/04;B01J31/40;B01J38/62;C08F4/42;C08F4/44;C08G64/20;C08G64/34;(IPC1-7):C08G64/34 |
主分类号 |
B01J31/04 |
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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