发明申请
- 专利标题： PROCESS FOR THE PREPARATION OF POLYETHER POLYOLS
- 专利标题（中）： 制备聚醚多元醇的方法
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申请号： US14122723申请日： 2012-05-30
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公开(公告)号： US20140107245A1公开(公告)日： 2014-04-17
- 发明人: Jörg Hofmann , Bert Klesczewski , Michael Schneider
- 申请人： Jörg Hofmann , Bert Klesczewski , Michael Schneider
- 申请人地址： DE Monheim
- 专利权人： Bayer Intellectual Property GmbH
- 当前专利权人： Bayer Intellectual Property GmbH
- 当前专利权人地址： DE Monheim
- 优先权： EP11168433.8 20110601
- 国际申请： PCT/EP2012/060102 WO 20120530
- 主分类号： C08G65/331
- IPC分类号： C08G65/331 ; C08G71/04
摘要：
The invention relates to a method for producing polyether carbonate polyols, wherein (i) in a first step a polyether carbonate polyol is produced from one or more H-functional starter substances, one or more alkylene oxides, and carbon dioxide in the presence of at least one DMC catalyst, and (ii) in a second step the polyether carbonate polyol is chain-extended with a mixture of at least two different alkylene oxides in the presence of at least one DMC catalyst. The invention further relates to polyether carbonate polyols that contain a terminal mixed block of at least two alkylene oxides and to a method for producing soft polyurethane foams, wherein a polyol component containing a polyether carbonate polyol according to the invention is used.
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