Invention Grant
- Patent Title: Method for producing polyesterpolyols of polyvalent alcohols
- Patent Title (中): 多元醇的聚酯多元醇的制造方法
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Application No.: US10512851Application Date: 2003-05-21
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Publication No.: US07241914B2Publication Date: 2007-07-10
- Inventor: Alexander Wartini , Matthias Dernbach , Gerlinde Tischer , Tilman Sirch
- Applicant: Alexander Wartini , Matthias Dernbach , Gerlinde Tischer , Tilman Sirch
- Applicant Address: DE Ludwigshafen
- Assignee: BASF Aktiengesellschaft
- Current Assignee: BASF Aktiengesellschaft
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: DE10223055 20020524
- International Application: PCT/EP03/05307 WO 20030521
- International Announcement: WO03/099902 WO 20031204
- Main IPC: C07C69/34
- IPC: C07C69/34
Abstract:
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.
Public/Granted literature
- US20050203268A1 Method for producing polyesterpolyols of polyvalent alcohols Public/Granted day:2005-09-15
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