Pur-polyester flexible foams based on polyetheresterpolyols

摘要

The present invention relates to polyetheresterpolyols which have a hydroxyl number of from 60 to 160 and a viscosity of ≦500 mPas at 75° C. These polyetheresterpolyols contain repeat units derived from I) aliphatic polycarboxylic acids, II) polyols having a hydroxyl number greater than 550 mg KOH/g, and III) polyols containing ether groups and having a hydroxyl number less than 120 mg KOH/g. This invention also relates to a process for the preparation of these polyetheresterpolyols, to a mixture containing the polyetheresterpolyols of the invention, to a process for the preparation of this mixture, to a process for the production of a PUR-polyester flexible foam from the mixture containing the polyetheresterpolyols of the invention, to the PUR-polyester flexible foam, to a process for the production of textile/foam and/or print/foam composites containing the PUR-polyester flexible foam, and to the textile/foam and/or print/foam