US Patent 7241914 Method for producing polyesterpolyols of polyvalent alcohols
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Patent Inventor Names
Alexander Wartini0
Gerlinde Tischer0
Matthias Dernbach0
Tilman Sirch0
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Patent 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.
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US Patent 07241914 Method for producing polyesterpolyols of polyvalent alcohols US Patent 7241914 Method for producing polyesterpolyols of polyvalent alcohols
Infobox
Patent Number
072419140
Patent Number
72419140
Edits on 22 Sep, 2022
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Patent Jurisdiction
Patent Number
072419140
Date of Patent
July 10, 2007
0Patent Application Number
105128510
Date Filed
May 21, 2003
0Official Website
Patent Primary Examiner
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US Patent 07241914 Method for producing polyesterpolyols of polyvalent alcohols
Infobox
Is a
Patent jurisdiction
Patent number
07241914
Date of patent
July 10, 2007
Patent application number
10512851
Date Filed
May 21, 2003
Patent primary examiner
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