发明名称 |
Process for the preparation of polymers having recurring agents |
摘要 |
Polymers having recurring succinyl units are obtained by an improved process by reaction of A, an unsaturated C4-dicarboxylic acid or a derivative thereof, with B, a nitrogen-donating compound, in a first reaction step to give a reaction mixture comprising at least one low molecular weight reaction product, and subsequent continuous feeding of the reaction mixture into a continuously operated reactor to give the polymer in a second reaction step. In a further embodiment the invention refers to polymers having recurring succinyl units prepared by reaction of an unsaturated C4-dicarboxylic acid or a derivative thereof with a nitrogen-donating compound in a first reaction step and subsequent feeding of the reaction mixture, without intermediate isolation, into an optionally continuously operated reactor, with removal of water, and treatment of the reaction mixture at a temperature of 140 to 350 DEG C.
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申请公布号 |
US6054553(A) |
申请公布日期 |
2000.04.25 |
申请号 |
US19960745812 |
申请日期 |
1996.11.12 |
申请人 |
BAYER AG |
发明人 |
GROTH, TORSTEN;JOENTGEN, WINFRIED;DOEBERT, FRANK;HEISE, KLAUS-PETER;MENZEL, THOMAS;PENTLING, URSULA;PIRKL, HANS-GEORG;WAGNER, PAUL;WEINSCHENCK, JOERGEN |
分类号 |
C08G73/10;(IPC1-7):C08G69/26 |
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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