Patent ID: 6235804
Filing Date: 2001-05-22
Classification: C08J

Abstract:
A method for preparing a polyurethane flexible molded foam which comprises reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a cell opener, and a silicone surfactant cell stabilizer having the formula:Me.sub.3 Si(OSiMe.sub.2).sub.x (OSiMeG).sub.y OSiMe.sub.3wherein G is a group having the formula --D(OR"").sub.m A where D is a divalent organic linking radical, R"" is an alkylene group, m has an average value from 1 to 5, A denotes an --OR'"" or an --OOCR'"" group, where R'"" is selected from the group consisting of methyl, ethyl, and a combination of methyl and ethyl, x has an average value from 1 to 3 and y has an average value from 0.25 to 1, the value of x/y is from 2.5 to 5 and the value of x+y is from 1.5 to 3.5.