Aminoalkylphosphinates and phosphinic acid-containing polymers therefrom
AssigneeNalco Chemical Company
InventorsDodd W. Fong, Mary A. Kinsella, James F. Kneller, John W. Sparapany
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Abstract
The invention describes novel amino(lower alkyl)phosphinic acid compounds and their use to modify acrylamide polymers, acrylic acid polymers and acrylamide-acrylic acid co-polymers which produces polymers containing amidoalkylphosphinic acid groups.
Claims6
Acrylamide homopolymers, acrylic acid homopolymer and co-polymers of acrylic acid with acrylamide having a molecular weight within the range of 1,000-100,000 which have been modified to contain up to about 50 mole percent of amido(C.sub.2 -C.sub.6 alkyl)phosphinic acid groups and the alkali metal, ammonium and amine salts thereof.
Acrylamide homopolymers, acrylic acid homopolymers and copolymers of acrylic acid with acrylamide having a molecular weight within the range of 1,000-100,000 which have been modified to contain up to about 30 mole percent of amido(C.sub.2 -C.sub.6 alkyl)phosphinic acid groups and the alkali metal, ammonium and amine salts thereof.
Dependencies are inferred from the claim text.