Process and composition for improving the cure of

专利名称：Process and composition for improving the

cure of water-blown molded polyurethanefoam

发明人：Robert Gabriel Petrella,John Joseph

Koch,Thomas William Bodnar

申请号：US08/904929申请日：19970801公开号：US05844012A公开日：19981201

摘要：A method for producing water-blown molded flexible polyurethane foam whichcomprises reacting and foaming in one step in a mold a reaction mixture comprising apolyol, an organic polyisocyanate, a urethane catalyst composition and water and atrimerization catalyst which is a quaternary ammonium salt or an alkali metal or alkalineearth metal salt of a Bronsted acid having a pKa of > 1, characterized in that thetrimerization catalyst is present in an amount from about 0.005 to 0.04 gram

milliequivalents per 100 grams of polyol. The preferred trimerization catalyst is an alkalimetal N-(2-hydroxyphenyl)methyl glycinate, especially an alkali metal N-(2-hydroxy-5-nonylphenyl)methyl- N-methyl glycinate.

申请人：AIR PRODUCTS AND CHEMICALS, INC.

代理人：Michael Leach

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