Patent ID: 8329622
Filing Date: 2012-12-11
Classification: C08F

Abstract:
1. Water soluble copolymer composition comprising a water soluble copolymer comprising at least three distinct monomers, said at least three distinct monomers comprising: at least one olefinically unsaturated carboxylic acid first monomer, at least one olefinically unsaturated mono- or di-alkyl ester of a dicarboxylic acid second monomer, wherein the dicarboxylic acid second monomer is selected from the group consisting of maleic acid, itaconic acid and combinations thereof, and at least one olefinically unsaturated hydrophilic, non-ionic third monomer, wherein the copolymer has a first molar ratio, Ratio I, of from about 0.01:1 to 1000:1, wherein A, in mole percent, is the sum of the moles of alkyl ester groups of the at least one second monomer divided by the total number of moles of the at least three distinct monomers in the copolymer; and H, in mole percent, is the sum of moles of the hydrophilic groups of the at least one third monomer divided by the total number of moles of the at least three distinct monomers in the copolymer, wherein the copolymer has a second molar ratio, Ratio II, of from about 0.001:1 to 100:1, wherein A and H are described above; and C, in mole percent, is the sum of the moles of carboxylic acid groups of the copolymer divided by the total number of moles of the at least three distinct monomers in the copolymer, and wherein the copolymer is water soluble and alcohol compatible; and a corrosion inhibitor.