Patent ID: 6184336
Filing Date: 2001-02-06
Classification: C02F,C08G

Abstract:
A water soluble, crosslinked poly(amino acid) polymer comprising units having the formula: ##STR5##wherein M is a cation selected from the hydrogen, alkali metal, alkaline earth metal, ammonium or alkyl-substituted ammonium cations; R.sup.3 is a divalent alkylene of 1 to 2 carbon atoms; R.sup.4 is divalent alkylene of 1 to 12 carbon atoms, cycloalkylene, arylene, alkarylene; W is CO.sub.2 M; and Y=R.sup.3 CO.sub.2 M, and structural isomers thereof, said crosslinked polymer having a weight average molecular weight of greater than or equal to 100,000.