Emulsifier and compositions comprising same

摘要

An acrylic resin emulsion which comprises an aqueous medium and particles of an acrylic resin emulsified and dispersed therein by the use of the emulsifier comprising as an essential component a polyester comprising in the molecule an amino-sulfonic acid type amphoionic group of the formula: <IMAGE> wherein A is a straight or branched C1-C6 alkylene group, a phenylene group or a substituted phenylene group.