alkali swellable acrylic emulsions comprising acrylic acid, use thereof in aqueous formulations and formulations containing the same

摘要

Direct manufacturing process in an aqueous emulsion of a polymer, characterized in that said process involves the polymerization reaction of, expressed in% by weight of each of the monomers: a) from 20% to 80% by weight of acid acrylic, b) from 10% to 90% by weight of at least one ester of (meth) acrylic acid, c) from 0.05% to 22% by weight of 2-acrylamido-2-methylpropane sulfonic acid , d) from 0 to 1% by weight of at least one crosslinking monomer, the total being a) + b) + c) + d) equal to 100%, or) from 20% to 80% by weight of acrylic acid, b) from 10% to 90% by weight of at least one ester of (meth) acrylic acid, c) from 10% to 25% by weight of a monomer containing a group hydrophobic, d) from 0.05% to 22% by weight of 2-acrylamido-2-methylpropane sulfonic acid, e) from 0 to 1% by weight of at least one crosslinking monomer, the total being a ) + b) + c) + d) + e) equal to 100%, and why the emulsion Aqueous ion has a dry extract that is between 10% and 50% dry polymer weight with respect to its total weight.