Method for making hydrophilic random interpolymer compositions

Details Method for making hydrophilic random interpolymer compositions Method for making hydrophilic random interpolymer compositions

1978-05-19

1981-02-03

Henderson, C. A.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

128155, 162161, 162168N, 162168NA, 526212, 526217, 526220, 526229, 526303, 526306, C08F 246, C08F 430

Patent

active

042486858

ABSTRACT:
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 quaternary ammonium group and (2) at least one .alpha.,.beta.-olefinically unsaturated comonomer in the presence of a crosslinking agent comprising a difunctional monomer derived 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 interpolymer can also be formed into a gel, which can be shaped into useful articles or alternatively dried and pulverized into bacteriostatic hydrophilic particles.

REFERENCES:
patent: 2677679 (1954-05-01), Barney
patent: 3324017 (1967-06-01), Perry
patent: 3475363 (1969-10-01), Gander
patent: 3509113 (1970-04-01), Monagle
patent: 3661880 (1972-05-01), Markert
patent: 3836512 (1974-09-01), Chu
patent: 4115339 (1978-09-01), Restaino

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