Rigid polyurethane foams

Details Rigid polyurethane foams Rigid polyurethane foams

C - Chemistry, Metallurgy

08

G

C08G 18/08 (2006.01) C08G 18/28 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2268182

Polyol blend comprising a polyester polyol, a tertiary amine catalyst and an organic carboxylic acid wherein said carboxylic acid contains at least one OH, SH, NH2 or NHR functional group, wherein R is an alkyl, cycloalkyl or aryl group and the use of said polyol blend in the manufacture of rigid polyurethane foams.

L'invention concerne un mélange de polyol comprenant un polyol de polyester, un catalyseur à base d'amines tertiaires et un acide carboxylique organique, caractérisé en ce que ledit acide carboxylique renferme au moins un groupe fonctionnel OH, SH, NH¿2? ou NHR, où R est un groupe alkyle, cycloalkyle ou aryle. Elle concerne également l'utilisation dudit mélange de polyol pour la fabrication de mousses rigides de polyuréthane.

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