Patent ID: 9303182
Filing Date: 2016-04-05
CPC Classification: C08K,C09D

Claim Text:
1. An aqueous coating composition comprising: i) a stable aqueous dispersion of polymer particles having structural units of an ethylenically unsaturated nonionic monomer; ii) from 5% to 50% by dry weight based on the total weight of the coating composition, of at least one pigment, wherein the pigment comprises from 30% to 100% based on the total weight of the pigment, of a polymer-encapsulated pigment comprising an encapsulating polymer comprising structural units of an ethylenically unsaturated nonionic monomer, and in percentage by weight based on the dry weight of the encapsulating polymer, from 0.1% to 10% of structural units of an ethylenically unsaturated monomer with at least one functional group selected from the group consisting of carboxyl, carboxylic anhydride, hydroxyl, amide, amine, sulphonate, phosphonate and mixtures thereof; wherein the polymer-encapsulated pigment has an average shell thickness of 10 nanometers to 200 nanometers and a minimum film formation temperature (MFFT) from −35° C. to 60° C.; and iii) from 2% to 25% by dry weight based on the total weight of the coating composition, of at least one colloidal silica.