Patent ID: 9290604
Filing Date: 2016-03-22
CPC Classification: C08G

Claim Text:
1. A method for making a polyurethane foam, the method comprising contacting at least one isocyanate with an isocyanate-reactive mixture comprising at least one polyether polyol, at least one silicone surfactant, a blowing agent comprising water, at least one amine catalyst, and an emulsifier wherein the emulsifier comprises at least two alkyl alcohol ethoxylates having an amount of propylene oxide that is not more than about 10% by mass of the overall average molecular weight of the emulsifier and has an average HLB value between about 10 to about 15, and wherein the isocyanate-reactive mixture contains about 0% by mass of nonylphenol ethoxylates; wherein the mixture is at least 90% phase stable for at least three days at 45 C, and the foam comprises an open cell foam having a density of 6 to 16 kg/m3.