| abstract |
Provided are an aqueous dispersion composition containing, stably dispersed therein, a copolymer containing α,β unsaturated carboxylic acid or an ester thereof as a structural unit, the composition retaining both characteristics of the content of the copolymer being relatively high and the viscosity being relatively low; and a production method for the same. The production method produces an aqueous dispersion composition of a copolymer containing α,β unsaturated carboxylic acid or an ester thereof as a structural unit, and comprises: (1) mixing a copolymer, which contains α,β unsaturated carboxylic acid or an ester thereof as a structural unit, a basic substance and water such that the concentration of the copolymer is 40-62 mass%, and the copolymer is neutralized to a neutralization degree of 10-35%; (2) pressurizing the obtained mixture at 0.1-2 MPa; and, if necessary, (3) adding water after the pressurization such that the concentration of the copolymer is adjusted to 30-60 mass%. |