POLYMER PARTICLE, POLYMER DISPERSION, METHOD FOR PRODUCING SAID POLYMER DISPERSION, COATING MATERIAL PRODUCED FROM SAID POLYMER DISPERSION, AND COATED ARTICLE

摘要

A method for producing a polymer dispersion, by polymerizing a mixture X containing a urethane resin (A3), a monomer (b5) having two or more radically polymerizable groups, and a radically polymerizable monomer (b6) other than the monomer (b5), to obtain a dispersion containing a polymer P; and adding a pre-emulsion prepared by emulsifying and dispersing a radically polymerizable monomer mixture Y dropwise to the dispersion containing the polymer P and conducting polymerization, to obtain a dispersion containing a polymer Z, where a content of the urethane resin (A3) in the mixture X at the time of starting the reaction in the step (1) is from 25 to 95% by mass with respect to a total mass of the mixture X.