Process for preparing low unsaturation polyether polyols

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

1996-11-04

1997-12-16

Wilson, Donald R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568619, 568620, 568621, 568623, 568624, C07C 4144

Patent

active

056987463

ABSTRACT:
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 at least 90% conversion to propenyl terminal unsaturation in one step 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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