Patent ID: 6534597
Filing Date: 2003-03-18
Classification: C08F

Abstract:
A method of making an emulsion polymer comprising copolymerizing by emulsion polymerization:(a) a polymerizable ester surfactant, or a salt thereof, having the formula: R1â€”C(O)â€”R2â€”X â€ƒwherein: R1 is an optionally substituted vinyl radical, R2 is a divalent polyoxyalkylene radical having at least two oxypropylene units, optional oxyethylene units in a block or random pattern, and a molar ratio oxypropylene units to oxyethylene units of at least about 2:1 when oxyethylene units are present; X is a phosphate group, wherein in the ester the mono-phosphate ester to di-phosphate ester weight ratio is greater than 80:20; with (b) at least one other polymerizable monomer.