Preparing aqueous polymer dispersions in presence of polar liquids

Claim 1

A PROCESS FOR PREPARING AQUEOUS POLYMER DISPERSIONS WHICH COMPRISES THE STEPS OF INTIMATELY CONTACTIG WITH WATER A SOLUTION OF A SUBSTANTIALLY HYDROCARBON POLYMER IN A SUBSTANTIALLY WATER-IMMISCIBLE SOLVENT, SAID SUBSTANTIALLY HYDROCARBON POLYMER HAVING CARBOXYL GROUPS ATTACHED THERETO BY A CARBON-CARBON LINKAGE, AND SAID POLYMER COMPRISING 80-99.7 MOLE PERCENT BOUND A-OLEFIN UNITS HAVING 2-18 CARBON ATOMS AND 0.3-20 MOLE PERCENT SOLVENT BEING SELECTED FROM THE GROUP CONSISTING OF HYDROCARBNS AND HALOGENATED HYDROCARBONS HAVING A BOILING POINT AT 760 MILLIMETERS PRESSURE OF LESS THAN 150* C., IN THE PRESENCE OF A BASE-SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND AN ORGANIC AMINE HAVING A DISSOCIATION CONSTANT OF AT LEAST 1 X 10**-8, A POLAR LIQUID , AND A DISPERSING AGENT, SAID POLAR LIQUID BEING SELECTED FROM THE GROUP CONSISTING OF ALCOHOLS, KETONES, AND AMIDES , SAID POLAR LIQUID COMPRISING AT LEAST ABOUT 5 WEIGHT PERCENT OF THE COMBINED WEIGHTS OF POLAR LIQUID AND SUBSTANTIALLY WATER-IMMISCIBLE SOLVENT, AND THEREAFTER REMOVING SAID SUBSTANTIALLY WATER-IMMISCIBLE SOLVENT AND SAID POLAR LIQUID AND RECOVERING AN AQUEOUS POLYMER DISPERSION HAVING AN AVERAGE SOLIDS PARTICLE SIZE OF LESS THAN ABOUT 1.0 MICRONS.