发明申请
- 专利标题： Method for producing polyesterpolyols of polyvalent alcohols
- 专利标题（中）： 多元醇的聚酯多元醇的制造方法
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申请号： US10512851申请日： 2003-05-21
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公开(公告)号： US20050203268A1公开(公告)日： 2005-09-15
- 发明人: Alexander Wartini , Matthias Dernbach , Gerlinde Tischer , Tilman Sirch
- 申请人： Alexander Wartini , Matthias Dernbach , Gerlinde Tischer , Tilman Sirch
- 申请人地址： DE Ludwigshafen 67056
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DE Ludwigshafen 67056
- 优先权： DE10223055.2 20020524
- 国际申请： PCT/EP03/05307 WO 20030521
- 主分类号： C07C29/80
- IPC分类号： C07C29/80 ; C08G6/00 ; C08G18/42 ; C08G63/12 ; C08G63/78 ; C08G63/02 ; C07C29/44
摘要：
The invention provides a process for preparing polyester polyols of polyhydric alcohols by mono- or polyesterification of at least one carboxylic acid having at least two acid groups and/or at least one derivative of a dicarboxylic acid with polyhydric alcohols, optionally with the addition of a catalyst, while removing the water of reaction, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.