Stabilizer-containing polyol compositions for polyurethane and polyisocyanurate foams

摘要

A storage-stable premix composition for use in a foam-forming reaction with an organic polyisocyanate in the manufacture of a polyurethane or polyisocyanurate foam comprising (a) at least one polyol, (b) at least one halogenated organic blowing agent, (c) at least one amine catalyst, and (d) a stabilizing amount of at least one polyvalent metal-containing organometallic compound. Some organometallic compounds of the invention have a slight catalytic effect but do not have the pronounced activity of conventional urethane and isocyanurate catalysts such as dibutyltin dilaurate and stannous octoate.