Aqueous polymer dispersions

摘要

An aqueous polymer dispersion containing polymer particles formed of at least three polymer domains and prepared by a multi-stage emulsion polymerization process, the polymer particles of the dispersion having a minimum film-forming temperature below 40 DEG C and comprising domain of three addition polymers, namely polymer A having a glass transition temperature (TgA) of from -70 DEG C to 0 DEG C and forming from 5 to 70% by weight of the total polymer ; polymer B having a glass transition temperature (TgB) of from 1 to 40 DEG C and forming from 5 to 70% by weight of the total polymer ; and polymer C having a glass transition temperature (TgC) of from 41 to 150 DEG C and forming from 5 to 70% by weight of the total polymer, the total polymer representing 100%.