Siloxane surfactant usel for preparing polyurethane flexible moulded foamed body

Application Number: 00126880
Application Date: 2000.09.01
Publication Number: 1291619
Publication Date: 2001.04.18
Priority Information: 1999/9/1 US 09/388293
International: C08G18/08
Applicant(s) Name: Air products and Chemicals, Inc.
Inventor(s) Name: J.H. Forre;D.R. Batetser;A.R. Alnod;Jr.
Patent Agency Code: 72001
Patent Agent: liu yuanjin
Abstract A method for preparing a polyurethane flexible molded by 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: Me3Si(OSiMe2)x(OSiMeG)yOSiMe3 wherein x has an average value from 1 to 4.5 and y has an average value from 0.75 to 7.5, the value of x/y is from 0.25 to 5 and the value of x+y is from greater than 5 to 9, G is a group having the formula -D(OR'')mA where D is a divalent organic linking radical, R'' is an alkylene group, m has an average value from 1 to 5, and 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.