The results for both high density and low density foams ‘show that the amine salts of amino acids of this invention have the ability to tie an organometallic, e.g.dibutyl tin dilaurate and delay the cream time substantially, and yet in many cases produce a tack free polyurethane in about the same time as when the organometallic is used alone. Although in the manufacture of low density foams there is a tendency to produce a friable product having some shrinkage, the ratios of DAC to organometallic of tin can be adjusted as deomonstrated to alleviate these problems. However, cream and gelation times are extended in most formulations.
What is claimed is:
1. In a process for the production of aurethane composition by polymerizing an organic polyisocyanate, an organic compound having an active hydrogen atom, and an organometallic catalyst, the improvement which comprises using an effective proportion of a‘ catalyst I
comprising an organometallic catalyst and an amine salt of an amino acid selected from the group represented by the formulas: