Hydrophilic random interpolymer compositions and method for...

Details Hydrophilic random interpolymer compositions and method for... Hydrophilic random interpolymer compositions and method for...

C - Chemistry, Metallurgy

08

F

402/323, 402/406

C08F 220/34 (2006.01) C08F 220/54 (2006.01) C08L 33/00 (2006.01)

Patent

CA 1079896

ABSTRACT OF THE DISCLOSURE Hydrocolloidal dispersions of random interpolymer compositions that have a capacity for absorbing water in amounts of from 10 to 125 times their own weight or greater and are also bacteriostatic are prepared by the polymerization in aqueous medium of a mixture of monomers comprising (1) up to about 90% by weight of an ester of an .alpha.,.beta.-olefinically unsaturated carboxylic acid and a monohydric or polyhydric alcohol having a terminal quarternary ammonium group and (2) at least one .alpha.,.beta.- olefinically unsaturated comonomer in the presence of a crosslinking agent comprising a difunctional monomer de- rived from an .alpha.,.beta.-olefinically unsaturated carboxylic acid. The interpolymer compositions can be used for binding or coating nonwoven fabrics including paper to improve water absorbency, or cast into a structurally self-supporting film. A water dispersion of the inter- polymer can also be formed into a gel, which can be shaped into useful articles or alternatively dried and pulverized into bacteriostatic hydrophilic particles.

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