Manufacture of polyurethane foam

Details Manufacture of polyurethane foam Manufacture of polyurethane foam

C - Chemistry, Metallurgy

08

G

403/28, 403/43

C08G 18/83 (2006.01) C08G 18/04 (2006.01) C08G 18/63 (2006.01) C08J 9/00 (2006.01)

Patent

CA 1042149

ABSTRACT OF THE DISCLOSURE This invention provides a substantially nonlustrous highly open urethane foam by the addition to the mixture foamed of a small amount of an ester of the formula (RCOO) n - R', wherein R and R' are alkyl or alkenyl groups having from one to 30 carbon atoms, at least one of R and R' having at least 3 carbon atoms, and wherein n is an integer from one to three, for example, stearyl methacrylate, i.e., octodecyl methacrylate. When n is one, at least one of R and R' has at least 8 carbon atoms. A polyether-polyol type foam-stabilizing organo-silicon emulsifier is also added. Pigment and other conventional additives can also be added, if desired. The resulting. urethane foams are useful as insulating liners for fabrics, as filters for liquids and gases, as diffusers to prevent explosions, and for many other purposes requiring open cell foams.

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