Long chain polyether polyols

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 65/26 (2006.01)

Patent

CA 2633704

The present invention provides a long-chain polyether polyol having a number average molecular weight of greater than about 500 g/mole and produced by alkoxylating a polyoxyethylene- containing initiator with an alkylene oxide in the presence of a basic catalyst having at least one cation thereof chelated by the polyoxyethylene-containing initiator. The inventive long-chain polyether polyols may be used to provide flexible polyurethane foams and non- cellular polyurethanes.

La présente invention concerne un polyol de polyéther à longue chaîne présentant un poids moléculaire moyen en nombre supérieur à environ 500 g/mole et produit par alcoxylation d'un initiateur contenant un polyoxyéthylène avec un oxyde d'alkylène en présence d'un catalyseur basique dont au moins un cation est chélaté par l'initiateur contenant un polyoxyéthylène. Les polyols de polyéther à longue chaîne selon l'invention peuvent être utilisés pour former des mousses souples de polyuréthanne et des polyuréthannes non cellulaires.

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