发明授权
US4874797A Oligourea polyols, polyether polyols produced from them and the use of
these polyols in the isocyanate polyaddition process
失效
由它们生产的低聚脲多元醇，聚醚多元醇以及这些多异氰酸酯在异氰酸酯加成方法中的用途
- 专利标题： Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process
- 专利标题（中）： 由它们生产的低聚脲多元醇，聚醚多元醇以及这些多异氰酸酯在异氰酸酯加成方法中的用途
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申请号： US914110申请日： 1986-10-01
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公开(公告)号： US4874797A公开(公告)日： 1989-10-17
- 发明人: Peter Haas , Claus-Dieter Sommerfeld , Hans-Ulrich Weber
- 申请人： Peter Haas , Claus-Dieter Sommerfeld , Hans-Ulrich Weber
- 申请人地址： DEX Bayerwerk
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Bayerwerk
- 优先权： DEX3535861 19851008; DEX3608962 19860318
- 主分类号： C07C275/14
- IPC分类号： C07C275/14 ; C07D295/215 ; C08G18/38 ; C08G18/50 ; C08G65/26 ; C08G65/28
摘要：
The present invention is directed to novel polyhydroxyalkyl oligoureas prepared by condensing urea derivatives with polyamides. The present invention is further directed to polyether polyols prepared by alkoxylating these polyhydroxyalkyl oligoureas. Finally, the present invention is directed to the use of both the polyhydroxyalkyl oligoureas and the polyethers prepared therefrom for use in the production of polyurethanes, particularly rigid foams.