Hydrophilic random interpolymer from quaternary ammonium monomer

Details Hydrophilic random interpolymer from quaternary ammonium monomer Hydrophilic random interpolymer from quaternary ammonium monomer

1976-04-07

1978-09-05

Henderson, Christopher A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526287, 526303, 526306, 526311, 128 82, 260 296H, 260 296ME, 351160, 424 79, 424 81, 428288, 428289, 428537, 428425, 526212, 526310, C08F22034, C08F22035

Patent

active

041119223

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: 2980634 (1961-04-01), Melamed
patent: 3475363 (1969-10-01), Gander
patent: 3547950 (1970-12-01), Gander
patent: 3836512 (1974-09-01), Chu
patent: 3934595 (1976-01-01), Dermain

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