Abstract: There is provided a method for making swellable particles, said method comprising mixing initial particles, at least one monomer, at least one initiator, and at least one chain-transfer agent, wherein said mixing is performed under conditions in which said monomer is capable of forming oligomer or polymer or a mixture thereof. Also provided are swellable particles made by that method. Further provided is a method of making polymeric resin particles comprising mixing at least one subsequent monomer to those swellable particles and polymerizing said subsequent monomer.

Abstract: An aqueous coating composition including a pigment and an aqueous acrylic emulsion polymer including, as copolymerized units, from 50% to 99.75% by weight, based on dry polymer weight, monoethylenically unsaturated nonionic (meth)acrylic monomer and from 0.25% to 10% by weight, based on dry polymer weight, monoethylenically unsaturated acid monomer, the polymer having a Tg of −10° C. to 35° C. wherein the emulsion polymer is formed by a certain emulsion polymerization process at a temperature of from 70° C. to 99° C. in the presence of a thermal initiator is provided. Further provided is a method for forming a dry coating therefrom.