发明名称 |
Process for preparing polymers which contain aspartic acid |
摘要 |
In a process for the continuous preparation of polymers with repeating succinyl units, maleic anhydride or a derivative thereof as educt A is mixed with ammonia or an ammonia-producing compound or amides of carbonic acid as educt B and in a first reaction stage these are reacted to give an N-containing low molecular derivative of maleic acid. This derivative is then polymerized in a subsequent second reaction stage. Reaction of the educts (A,B) takes place largely adiabatically in the first reaction stage. The heat of reaction thereby released is used to take the reaction mixture to the polymerization temperature and in the second reaction stage at least partially to polymerize the N-containing low molecular derivative to obtain a polymer with repeating succinyl units.
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申请公布号 |
US5594077(A) |
申请公布日期 |
1997.01.14 |
申请号 |
US19940328868 |
申请日期 |
1994.10.25 |
申请人 |
BAYER AG |
发明人 |
GROTH, TORSTEN;JOENTGEN, WINFRIED;WAGNER, PAUL;TRAENCKNER, HANS-JOACHIM;JOVCIC, DORDE |
分类号 |
A01N37/32;A01N37/44;B01F17/00;B01J19/24;C02F5/12;C08G69/04;C08G69/10;C08G73/00;C08G73/10;C09K8/528;C11D3/37;(IPC1-7):C08G69/00 |
主分类号 |
A01N37/32 |
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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