Aqueous polymer dispersion and method of use

摘要

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.