Method of making foams and foamable compositions

Details Method of making foams and foamable compositions Method of making foams and foamable compositions

C - Chemistry, Metallurgy

08

J

117/161, 154/41,

C08J 9/14 (2006.01) B32B 5/18 (2006.01)

Patent

CA 1142299

ABSTRACT OF THE DISCLOSURE Foam compositions are disclosed with a synergistic blowing agent mixture of propane and butane for use as coatings and adhesives. Foams are made by pressurizing a liquid composition containing a blowing agent mixture of propane and butane and re- leasing the pressure to form the foams. The propane and butane are contained in a liquid composition in relative amounts which together provide a synergistic foaming effectiveness upon the liquid composition. High foam-volume ratios are achieved at relatively low pressures employing the liquid blowing agent mix- ture of propane and butane. The method and compositions are advantageous in making paints and adhesives with polymeric components as the film-forming or adhesive solids.

345918

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