Patent ID: 6210585
Filing Date: 2001-04-03
Classification: B01F,C01F,Y10S

Abstract:
A method of separating solids and preventing foaming in an industrial water system comprising adding to fluids in the industrial water system an effective amount of a low foaming latex polymer flocculant prepared by(a) adding an aqueous solution of one or more monomers selected from the group consisting of acrylic acid, acrylates of ammonium, sodium and potassium, acrylate esters, acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and salts thereof, styrene sulfonic acid and salts thereof, vinyl acetate and N-vinylpyrrolidinone to an oil phase containing an oil solvent and an emulsifier; wherein the emulsifier is a combination of tallow amine ethoxylate and polyoxyethylene oleyl ether in a weight ratio of amine to ether of from about 50:50 to about 60:40 and(b) initiating polymerization under free radical conditions to form the latex polymer.