Method for producing polyester polyols having low volume of...

Details Method for producing polyester polyols having low volume of... Method for producing polyester polyols having low volume of...

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) C08G 63/672 (2006.01) C08J 9/00 (2006.01)

Patent

CA 2742538

The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid hydride and ethylene glycol, wherein a specialized reaction control substantially suppresses the formation of 1,4- dioxane from diethylene glycol.

L'invention concerne la production et l'utilisation de polyester-polyols composés d'au moins un anhydride d'acide carboxylique et d'éthylèneglycol, la formation de 1,4-dioxane à partir de l'éthylèneglycol étant largement réduite par une mise en oeuvre spéciale de la réaction.

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