Polymer dispersions using hydrocarbons and graft copolymer dispersing agents

Claim 1

A PROCESS FOR PORDUCING A DISPERSIO N OF A POLYMER IN A SUBSTANTIALLY ANHYDROUS ESSENTIALLY INERT LIQUID MEDIUM WHICH COMPRISES INTIALLY DISSOLVING A POLYMER SELECTED FROM OXIDIZED VEGETABLE OILS AND OXIDIZED ANIMAL OILS IN AN ANHYDROUS LIQUID MEDIUM CONSISTING ESSENTIALLY OF AT LEAST ONE MEMBER SELECTED FROM ALIPHATIC, AROMATIC, AND NAPHTHENIC HYDROCARBONS, THE LIQUID MEDIUM CONTAINING ABOUT 0.1 TO 5% BY WEIGHT, BASED ON THE WEIGHT OF THE DISSOLVED POLYMER, OF AN ADDITION-POLYMERIZATION CATALYST, THE PRESSURE BEING IN THE RANGE OF NORMAL ATMOSPHERIC PRESSURE TO SUPERATOMOSPHERIC PRESSURE TO ASSURE THAT AT THE TEMPERATURE OF THE POLYMERIZATION, IT OCCURS IN THE ANHYDROUS MEDIUM WHILE IN LIQUID STAE, ADDING POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMERIC MOLECULES HAVING A GROUP OF THE FORMULA H2C=C< AND COMPRISING AT LEAST ONE ALKYL ACRYLATE OR ALKYL METHACRYLATE IN WHICH THE ALKY GROUP HAS 1 TO 18 CARBON ATOMS TO THE POLYMER SOLUTION AND EFFEDTING POLYMERIZATIO AT A TEMPERATURE IN A RANGE FROM ABOUT -10*C. TO ABOUT 120*C. TO PRODUCE A STABLE DISPERSION OF SOLID POLYMER PARTICLES INSOLUBLE I THE MEDIUM AND HAVING SIZES IN THE RANGE OF ABOUT 0.05 TO 10 MICRONS, THE WEIGHT OF MONOMERIC MOLECULES ADDED BEING SUFFICIENT TO PRODUCE A CONCENTRATION, IN THE FINAL DISPERSION, OF AT LEAST ABOUY 1% TO ABOUT 55% BY WEIGHT OF THE AFORESAID DISPERSED INSOLUBLE SOLID POLYMER PARTICLES, THE AMOUNT OF THE AFOREMENTIONED POLYMER INITIALLY DISSOLVED IN THE HYDROCARBON MEDIUM BEING ABOUT 2 TO 20% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYMER TO BE DISPERSED.