Polyurethane foam with low vinyl-staining tendencies

摘要

This invention relates to a process for the manufacture of polyurethane foams which exhibit a reduced tendency to stain vinyl films with which they are in contact, such as are produced for use in automobile interiors. The process comprises:(a) forming a reaction mixture comprising(i) at least one polyol;(ii) at least one polyisocyanate;(iii) a catalyst consisting essentially of at least one amine catalyst having an average molecular weight of no greater than about 160, wherein said amine catalyst comprises less than about 1.0 wt. % of the reaction mixture; and(b) contacting said reaction mixture with a vinyl film;(c) reacting the reaction mixture under suitable conditions to form a polyurethane foam therefrom.