Process for the preparation of a polyether polyol with little odour from an initial product polyether polyol

摘要

Process for the preparation of a polyether polyol with little odour from a polyether polyol initial product not neutralized.Process for the preparation of polyether polyols with little odour from a polyether polyol, that initial product obtained by reaction of a compound o departure that has many atoms of hidrogu00eanIt asset with one or more of alkylene oxides.This process comprises the steps of: (a) put in contact the product polyether polyol neutralised or neutralized with an excess of an acid which has a pKa less than 5.In the conditions of hydrolysis, (b) put the mixture of reaction in contact with water under hydrolysis conditions, and (c) recovering the polyether polyol with low odor.