| abstract |
The use of special polyol derivs. (I) as internal mould release agents and/or polyols with release properties in the prodn. of polyurethane (PU) mouldings is claimed. Polyols (I) have an OH no. of 150-700, with at least two alcoholic OH gps. and at least one fatty acid residue per mol., and are obtd. by reacting a 8-20C fatty acid or deriv.. (II) with a starting polyol (III) consisting of di- or tri-ethanolamine, di- or tri-isopropanolamine, dibutanolamine, or the reaction prod. of ethylene oxide (EO) and/or propylene oxide (PO) with ethanolamine, isopropanolamine, dibutanolamine or a prim. or sec. aliphatic or aromatic amine. |