Patent ID: 6211296
Filing Date: 2001-04-03
Classification: A61K,Y10S

Abstract:
An aqueous polymeric composition, comprising:a blend of at least one crosslinked polymer and at least one high molecular weight substantially linear carboxylic acid-based polymer.said crosslinked polymer derived from(a) a polymer made from at least one olefinically unsaturated carboxylic acid or anhydride monomer, or(b) a copolymer of said at least one olefinically unsaturated carboxylic acid or anhydride monomer and a comonomer, or(c) an interpolymer of said (a) or said (b), or combinations thereof,with the proviso that when said crosslinked polymer is said (b) copolymer or said (c) interpolymer of said (b), the amount of comonomer forming said copolymer is from about 0.001 to about 30 percent by weight of said copolymer; andsaid at least one high molecular weight substantially linear carboxylic acid-based polymer derived from at least one olefinically unsaturated carboxylic acid monomer, said crosslinked polymer being crosslinked by a crosslinking agent, and said high molecular weight substantially linear carboxylic acid-based polymer having a weight average molecular weight of at least 200,000.