发明名称 |
Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process |
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.
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申请公布号 |
US4874797(A) |
申请公布日期 |
1989.10.17 |
申请号 |
US19860914110 |
申请日期 |
1986.10.01 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
HAAS, PETER;SOMMERFELD, CLAUS-DIETER;WEBER, HANS-ULRICH |
分类号 |
C07C275/14;C07D295/215;C08G18/38;C08G18/50;C08G65/26;C08G65/28 |
主分类号 |
C07C275/14 |
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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