发明名称 |
Kristallisierende Polyetherpolyole, ein Verfahren zu deren Herstellung sowie deren Verwendung |
摘要 |
The invention relates to crystallising polyether polyols which can be produced by first reacting propylene oxide and polyhydroxy compounds in the presence of an alkoxy compound containing zinc and/or aluminium atoms, in order to obtain a crystallising polyether polyol with an average molecular weight Mn of 500 to 5000, and then reacting the crystallising polyether polyol thus obtained with 10 to 90 wt. % of an epoxide in relation to the quantity of the crystallising polyol, in the presence of a catalyst that does not polymerise propylene oxide stereospecifically, in order to obtain a crystallising polyether polyol with an average molecular weight Mn of 1000 to 20 000. The invention also relates to a method for producing the crystallising polyether polyols and to their use for producing polyurethane materials, especially polyurethane foams, elastomers and coatings.
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申请公布号 |
DE19919267(A1) |
申请公布日期 |
2000.11.02 |
申请号 |
DE19991019267 |
申请日期 |
1999.04.28 |
申请人 |
BAYER AG |
发明人 |
SCHAEFER, WALTER;HOFMANN, JOERG;GUPTA, PRAMOD;OOMS, PIETER |
分类号 |
C08G65/10;B01J31/12;C07F19/00;C08G18/48;C08G65/26;C08G65/28;C08G101/00;C09D175/04;(IPC1-7):C08G65/28;C08L75/06 |
主分类号 |
C08G65/10 |
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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