Deactivation of polyisocyanate polyaddition products by means of copper, nickel, iron, or zinc salts in which the metal ion is complexed, in order to avoid primary amine formation with avoidance of free isocyanates and foaming impairment

摘要

Deactivation of amine catalysts in polyisocyanate polyaddition products (PIPAP) after their preparation in order to avoid the formation of primary amines, especially primary aromatic amines, by means of additives which decrease the content of these amines, especially in soft polyurethane foams, i.e. by addition of groups I, II, and or VIII subgroups, is new.