Method for the synthesis of polyether siloxanes

摘要: Polyether siloxanes, which are linked to the polysiloxane backbone through Si--C bonds, synthesized by reacting given polysiloxanes with a compound having at least one epoxide group in such amounts, that there two groups per OH group, presence of Lewis acids temperatures not exceeding 60° C. or complex catalysts, accelerate addition between and hydroxyl groups, up 140° C., reaction optionally being carried out an inert solvent. The polyether siloxanes obtained have defined functionality free excess, unreacted polyol components.