发明名称 |
Process for the production of urea group-containing polyisocyanates |
摘要 |
The present invention is directed to a process for the production of urea group-containing, finely divided solid polyisocyanates by emulsifying or suspending a urea group-free organic polyisoycanate in an excess of water so that said organic polyisocyanate amounts to about 1 to 65% by weight of the reaction mixture, said water containing about 0.01 to 5% by weight, based on the aqueous phase, of a protective colloid and reacting the organic polyisocyanate with water to yeild a urea group-containing polyisocyanate.
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申请公布号 |
US4680367(A) |
申请公布日期 |
1987.07.14 |
申请号 |
US19850783590 |
申请日期 |
1985.10.03 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
KOPP, RICHARD;GROEGLER, GERHARD;HESS, HEINRICH;KOENIG, KLAUS |
分类号 |
C08G18/00;C07C273/18;C08G18/02;C08G18/08;C08G18/30;C08G18/70;C08G18/78;C08G18/80;(IPC1-7):C08G18/00 |
主分类号 |
C08G18/00 |
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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