Process for preparing low unsaturation polyether polyols

Details Process for preparing low unsaturation polyether polyols Process for preparing low unsaturation polyether polyols

C - Chemistry, Metallurgy

08

G

C08G 65/48 (2006.01) C08G 18/48 (2006.01) C08G 65/26 (2006.01) C08G 65/30 (2006.01) C08G 65/324 (2006.01)

Patent

CA 2174394

Polyether polyols having reduced terminal unsaturation are prepared in a process comprising a first step of contacting a polyether having allyl terminal unsaturation with an isomerization catalyst whereby the allyl terminal unsaturation of the polyether is reduced by conversion to propenyl terminal unsaturation and,in a final step, the resulting polyether product of the first step is contacted with an acid catalyst whereby a substantial amount of the propenyl terminal unsaturation of the polyether is removed and the corresponding polyether having an additional hydroxyl group is obtained.

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