Foamed polymeric materials

Details Foamed polymeric materials Foamed polymeric materials

C - Chemistry, Metallurgy

08

J

403/9, 31/80.1

C08J 9/08 (2006.01) C08J 9/02 (2006.01)

Patent

CA 1230447

ABSTRACT OF THE DISCLOSURE This invention is directed to a process for preparing foamed water-swellable polymeric water absorbent materials. The process comprises contacting an aqueous polymer dispersion wherein said polymer is capable of having a water-swellable character and contain a functionally effective amount of pendant acid moieties in acid form with a carbon dioxide yielding blowing agent such as sodium bicarbonate, which blowing agent is capable of neutralizing the pendant acid moieties of the polymer. The foamed polymers are useful in a wide variety of water absorbent applications.

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