Patent ID: 8404776
Filing Date: 2013-03-26
Classification: C08L,C09D,Y10T

Abstract:
1. A water-based paint composition comprising polyester resin (A), water-dispersible acrylic polymer particles (B) and hardening agent (C), wherein: the polyester resin (A) is a polyester resin having a hydroxyl value within a range of 120-180 mgKOH/g and an acid value within a range of 12-30 mgKOH/g, which is obtained by reaction of an acid component and an alcoholic component, wherein an alicyclic polyvalent carboxylic acid (inclusive of an acid anhydride) (a-1) content of the acid component is at least 30 mol % based on a total of the acid component, and the polymer particles (B) have a weight-average molecular weight of at least 1,100,000 and an absorbance not higher than 0.2 at a wavelength of 330 nm as measured with spectrophotometer in a state of a liquid dispersion at a mass concentration of 1.35% in 1,4-dioxane solvent.