发明名称 |
Process for the purification of polyisocyanates, the polyisocyanates thus purified and use thereof |
摘要 |
A process for the purification of organic polyisocyanates by mixing of the polyisocyanate with from 0.001 to 1% by weight of compounds containing trimethylsilyl groups at temperatures of from 20 DEG to 150 DEG C. The resultant mixture of organic polyisocyanates and compounds containing trimethylsilyl groups is optionally treated by degasification or distillation. These purified polyisocyanates are suitable for the production of polyurethane plastics, and in particular, polyurethane foams. |
申请公布号 |
US5386054(A) |
申请公布日期 |
1995.01.31 |
申请号 |
US19920916773 |
申请日期 |
1992.07.17 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
SCHOLL, HANS J.;MUELLER, HANNS-PETER;WELTE, RAINER |
分类号 |
C08G18/72;C07C263/20;C07C265/14;C08G18/00;C08G18/76;(IPC1-7):C07C263/18 |
主分类号 |
C08G18/72 |
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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