Patent ID: 7615580

Claim:
A method of making a flexible molded polyurethane foam, the method comprising combining in a mold a flexible polyurethane foam reaction mixture comprising (i) an ester-free polyol component consisting of 0-100 wt % polyether polyol and 100-0 wt % graft and/or polyurea modified co-polyols, (ii) an organic polyisocyanate, (iii) a non-fugitive tertiary amine urethane catalyst having an isocyanate reactive group, and (iv) an ester alcohol or substituted carbamate thereof which is a diacid ester diols or substituted carbamates according to formula (I) wherein each R is independently H or substituted carbamoyl, each Z and each A is independently selected from divalent radicals, and n is a number having a value from 1 to 100; wherein the ratio of equivalents of ester groups in the ester alcohol or substituted carbamate thereof to tertiary amine equivalents in the non-fugitive catalyst is in a range of 0.1:1 to 5:1 and the ratio of hydroxyl equivalents in the ester alcohol or substituted carbamate thereof to hydroxyl equivalents in the polyol component is greater than 0 and less than 1.5.