Tertiary amine-free and tin-free catalysts for lower density polyurethanes
by Stephen Cavender and Rajeshkumar K. Patel, Patcham.
Ways in which various polyurethane products can be produced without using tertiary amine or tin-based catalysts are demonstrated by the authors; the catalysts provide foam amines and resulting product density similar to that currently available using combinations of tertiary amines and tin-based catalysts.