Abstract: An aqueous polymer dispersion comprising polymer particles (A), polymer particles (B) and at least one low molecular weight polymer (C) where polymer particles (A) comprise high molecular weight polymer pA having Mw >50,000 and acid number of from 0 to 160, polymer particles (B) comprise high molecular weight polymer pB having Mw >50,000 and acid number of from 0 to 160, and C is an addition polymer having a calculated Tg,(low) of less than 10° C.

Abstract: An aqueous coating composition having a pigment volume concentration (PVC) of from 60 to 95, preferably having a VOC of equal to or less than 0.1 wt %, including at least one pigment and an aqueous emulsion copolymer, the copolymer having an average particle diameter of from 50 to 350 nanometers and a glass transition temperature (Tg) of from ?20° C. to 60° C., and the copolymer including as polymerized units at least one ethylenically unsaturated nonionic monomer and from 1 to 5%, by weight based on the dry weight of the copolymer, ethylenically unsaturated phosphate monomer, or salts thereof is provided.

Abstract: A selected aqueous dispersion of polymeric particles, preferably formed by a two-stage emulsion polymerization process, the particles including: from 5% to 20% by weight, based on the weight of the polymeric particles, of a first polymer including at least one copolymerized ethylenically unsaturated nonionic monomer, the first polymer having a glass transition temperature (Tg) of from 40° C. to 95° C.; and from 80% to 95% by weight, based on the weight of the polymeric particles, of a second polymer including at least one copolymerized ethylenically unsaturated nonionic monomer and from 0.25% to 5% by weight, based on the weight of the second polymer, of a copolymerized aldehyde-reactive monomer, the second polymer having a Tg of from ?20° C. to 0° C. and an acid number of from 2 to 160, is provided.

Abstract: An aqueous polymer dispersion containing a predominant amount of first polymer particles and a smaller amount of second polymer particles is provided. The first polymer particles have a glass transition temperature in the range of from ?20° C. to 25° C. The second polymer particles include multiethylenically unsaturated monomer as polymerized units, and have a glass transition temperature of less than 0° C. The aqueous polymer dispersion is useful for providing dry coatings having improved dirt pickup resistance and an acceptable level of scrub resistance. Also provided is an aqueous coating composition including the aqueous polymer dispersion and a method for preparing a dry coating from the aqueous coating composition.

Abstract: An aqueous coating composition having improved adhesion to friable surfaces including an emulsion polymer of certain compositions and certain acid numbers having a glass transition temperature of ?20° C. to 100° C. and an average particle diameter less than 120 nanometers, and certain water-soluble ethoxylates is provided. In addition, a method for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.

Abstract: An aqueous polymer composition is provided containing select levels of hard polymer and soft polymer, wherein the hard polymer and the soft polymer are contained as dispersed particles. Portions of the hard polymer and optionally, the soft polymer, have select chemical groups. The aqueous polymer composition also contains composite particles formed from pigment particles and a plurality of polymer particles having the select chemical groups. The aqueous polymer composition is useful for preparing coatings having a combination of improved hiding, low temperature film formation, and hardness properties, such as dirt pickup resistance. Methods to prepare and to use the aqueous polymer composition are also provided.