Patent ID: 6737469
Filing Date: 2004-05-18
Classification: C08J

Abstract:
A method of incorporating a water insoluble organic chemical into a styrene-butadiene rubber latex dispersion, comprising the steps of:providing a styrene-butadiene rubber latex dispersion comprising an aqueous phase and a disperse phase, said disperse phase comprising particles of styrene-butadiene rubber; adding an organic solvent that is miscible in water to the styrene-butadiene rubber latex dispersion; and adding a water insoluble organic chemical to the styrene-butadiene rubber latex dispersion; whereby the addition of said organic solvent allows the water insoluble organic chemical to pass from the aqueous phase into the disperse phase thus limiting separation of the water insoluble organic chemical from the latex dispersion, wherein the organic solvent is present in an amount that is less than 5% by weight based on the weight of the latex polymer, and wherein the water insoluble organic chemical is at least one of a vulcanizing agent, a vulcanization accelerator, a prevulcanization inhibitor, an antireversion agent, and an antioxidant.