Two-component waterborne polyurethane coating composition and low gloss coating formed therefrom

Abstract

The present application is directed to a two-component waterborne polyurethane coating composition including: a film-forming resin composition, comprising an aqueous dispersion of hydroxyl acrylic polymer particles with a core-shell structure; and a polyisocyanate crosslinker, wherein the hydroxyl acrylic polymer particles with a core-shell structure includes a shell formed by a copolymer A and an inner core formed by a copolymer B; and wherein the copolymer A has a glass transition temperature ranging from −20° C. to 60° C., the copolymer B has a glass transition temperature ranging from 20° C. to 100° C., and the hydroxyl acrylic polymer particles with a core-shell structure have a glass transition temperature ranging from 10° C. to 90° C. The present application also relates to a low gloss coating formed by the two-component waterborne polyurethane coating composition.

Dependencies are inferred from the claim text.