发明申请
- 专利标题： Method for producing polyether alcohols
- 专利标题（中）： 聚醚醇的制造方法
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申请号： US10515350申请日： 2003-06-06
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公开(公告)号： US20050177005A1公开(公告)日： 2005-08-11
- 发明人: Raimund Ruppel , Eva Baum , Jurgen Winkler , Edward Bohres
- 申请人： Raimund Ruppel , Eva Baum , Jurgen Winkler , Edward Bohres
- 申请人地址： DE LUDWIGSHAFEN
- 专利权人： BASF AKTIENGESELLSCHAFT
- 当前专利权人： BASF AKTIENGESELLSCHAFT
- 当前专利权人地址： DE LUDWIGSHAFEN
- 优先权： DE10226415.5 20020613
- 国际申请： PCT/EP03/05936 WO 20030606
- 主分类号： C08G65/26
- IPC分类号： C08G65/26 ; C07C41/03
摘要：
The invention relates to a method for producing polyether alcohols, comprising the following steps: a) reacting a low-molecular alcohol with alkylene oxide in the presence of a basic catalyst in order to form an alkylene oxide addition product having a molecular weight ranging from 200 to 900 g/mol; b) separating the basic catalyst from the product obtained in step a), and; c) reacting the product obtained in step b) with another alkylene oxide in order to produce the desired final product while using at least one DMC catalyst. The inventive method is characterized in that sodium hydroxide is used as the basic catalyst in step a).
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