Novel polyols

Details Novel polyols Novel polyols

C - Chemistry, Metallurgy

08

G

C08G 65/30 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2162864

Process for reducing the level of unsaturation in a polyether polyol having an oxypropylene content of at least 30% by weight calculated on the total amount of oxyalkylene units in the polyol and having a number average equivalent weight of at least 1,000 by subjecting the polyol to ultrafiltration.

Procédé permettant de réduire le niveau d'insaturation dans un polyol de polyéther présentant une teneur en oxypropylène d'au moins 30 % en poids, calculé par rapport au nombre total d'unités d'oxyalkylène dans le polyol, et présentant un poids équivalent moyen au nombre d'au moins 1000, ce procédé consistant à soumettre le polyol à une ultrafiltration.

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