C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
400/102, 403/37
C08J 9/06 (2006.01) C08J 9/14 (2006.01) C08L 101/06 (2006.01)
Patent
CA 2016390
ABSTRACT OF THE INVENTION A process for preparing polyurethane foams comprising reacting polyol with polyfunctional isocyanate in the presence of an auxiliary blowing agent comprising 1 monofluoro 1,1 dichloroethane. The amount of auxiliary blowing agent used is from 60 to 80 wt% of the amount of conventional auxiliary blowing agent consisting of trichlorofluoromethane that would be required to obtain comparable foam density and either firmness or compressive strength.
Du Pont Canada Inc.
Sim & Mcburney
Sylvester Robert G.
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