Patent ID: 8901237
Filing Date: 2014-12-02
Classification: C08K,C09D

Abstract:
1. A method for making an aqueous coating composition, which confers stain and penetration resistance when applied to a substrate and dried and/or cured, comprising mixing together at least one pigment, at least one film-forming polymer in the form of an aqueous polymer dispersion, and at least one anionic surfactant of formula (Ia), to obtain the aqueous coating composition; wherein said aqueous coating composition comprises: at least one pigment, an aqueous polymer dispersion containing at least one film-forming polymer, and at least one anionic surfactant (S) of formula (Ia); wherein the at least one film-forming polymer, in polymerized form, consists of: wherein the at least one surfactant (S) is of formula (Ia): wherein a weight ratio of the at least one pigment to the at least one film-forming polymer ranges from 4:1 to 1:5; and wherein the amount of the at least one surfactant (S) of formula (Ia) constitutes at least 85% of the total amount by weight of anionic surfactants in the aqueous coating composition.