Rapid set latexes and foamed articles prepared therefrom

Details Rapid set latexes and foamed articles prepared therefrom Rapid set latexes and foamed articles prepared therefrom

C - Chemistry, Metallurgy

08

J

C08J 9/30 (2006.01) C08J 5/02 (2006.01) C08L 39/02 (2006.01)

Patent

CA 2322137

Rapid set cellular articles can be prepared from a latex by the steps of: a) frothing a latex that contains a dispersed polymer having pendant cationic groups or adsorbing cationic molecules or both, and pendant acid groups; and b) rendering the frothed latex sufficiently basic to make the cellular article. The cellular articles of the present invention are advantageously prepared at ambient temperatures and pressures, and in the absence of organic solvents or CFCs.

L'invention concerne des articles cellulaires à durcissement accéléré, qui peuvent être préparés à partir d'un latex selon le procédé consistant: a) à faire mousser par battage un latex contenant un polymère dispersé comprenant des groupes cationiques latéraux, des molécules cationiques absorbantes, ou les deux, et des groupes acides latéraux; et b) à rendre le latex mousseux ainsi obtenu suffisamment basique pour pouvoir fabriquer ledit article cellulaire. Pour une plus grande efficacité, les articles cellulaires fabriqués selon la présente invention peuvent être préparés à température et pression ambiantes, et en l'absence de solvants organiques ou de CFC.

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