PROCESS FOR PRODUCTION OF CARBOXYLIC ACID POLYMERS

摘要

A process for the production of carboxylic acid polymers which comprises polymerizing an a-unsaturated carboxylic acid and/or a salt thereof by a method that includes using an aqueous monomer solution containing the a-unsaturated carboxylic acid and/or the salt thereof, an aqueous solution of a sulfurous acid salt, and an oxygen-containing gas, wherein the pH of the reaction fluid is adjusted to 5.0 to 10.0 when the concentration of the sulfurous acid salt in the reaction fluid falls within a range of 0.001 to 0.05mol/L.