Polyether alcohols

Details Polyether alcohols Polyether alcohols

C - Chemistry, Metallurgy

08

G

C08G 65/10 (2006.01) C08G 18/48 (2006.01) C08G 65/26 (2006.01) C08G 65/30 (2006.01)

Patent

CA 2382613

The invention relates to a method for producing polyether alcohols by catalytically attaching ethylene oxide and propylene oxide to H-functional starting substances. Said method is characterized in that at least one multimetal cyanide compound is used as a catalyst, and a block comprised of an alkylene oxide having at least three carbon atoms in the molecule is attached to the chain end.

L'invention concerne un procédé de préparation d'alcools de polyéther par addition catalytique d'oxyde d'éthylène et d'oxyde de propylène sur des substances de départ H-fonctionnelles. Ce procédé se caractérise en ce que le catalyseur utilisé est au moins un composé cyanure polymétallique et qu'un bloc composé d'un oxyde d'alkylène ayant au moins trois atomes de carbone dans la molécule est ajouté à l'extrémité de la chaîne.

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