Polyurethane materials

Details Polyurethane materials Polyurethane materials

C - Chemistry, Metallurgy

08

G

C08G 18/36 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2245670

Ester polyhydric alcohols which are stable in storage and can be obtained by (a) reaction of polyfunctional alcohols with 0.5 to 60 mol of ethylene oxide (EO) and/or propylene oxide (PO) per mol of alcohol and (b) transesterification of resulting polyhydric alcohols with 0.1 to 30 mol of triglycerides per mol of alkoxylated alcohol, wherein at least one of the fatty acid resid ues per triglyceride molecule carries at least one OH group, but the mixture on average has at least 1.5 OH groups per molecule. The invention relates to the use of said ester polyhydric alcohols for the preparation of polyurethane materials.

L'invention concerne l'utilisation de polyols d'ester stables au stockage pour la production de matériaux en polyuréthanne, lesdits polyols d'ester pouvant être obtenus par a) réaction d'alcools polyfonctionnels avec 0,5 à 60 moles d'oxyde d'éthylène (EO) et/ou d'oxyde de propylène (PO) par mole d'alcool et b) transestérification des polyols ainsi obtenus avec 0,1 à 30 moles de triglycérides par mole d'alcool alcoxylé, au moins un des restes d'acide gras comportant au moins un groupe OH par molécule de triglycéride, le mélange en comportant en moyenne au moins 1,5 par molécule.

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