Addition polymer compositions and methods of producing them

Claim 1

A PROCESS FOR PRODUCING AN ADDITION POLYMER COMPOSITION WHICH COMPRISES DISSOLVING AT A CONCENTRATION OF AT LEAST 1% IN A LIQUID, ESSENTIALLY ALIPHATIC HYDROCARBON MEDIUM BOILING IN THE RANGE OF 75*C. TO 520*C. A DRYING OIL-MODIFIED POLYESTER CONDENSATION PRODUCT OF A DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF SATURATED ALIPHATIC DICARBOXYLIC ACIDS HAVING 4 TO 12 CARBON ATOMS, PHTHALIC ACID, ISOPHTHALIC ACID, AND TEREPHTHALIC ACID WITH AN ALIPHTIC POLYHYDRIC ALCOHOL HAVING 2 TO 6 CARBON ATOMS AND 2 TO 6 HYDROXYL GROUPS, AND INTRODUCING INTO THE SOLUTION AT LEAST ONE MONETHYLENICALLY UNSATURATED MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, ITACONIC ACID, ACRYLAMIDE, METHACRYLAMIDE, ACRYLONITRILE, METHACRYLONTRILE, (C1-C4)-ALKYL ESTERS OF ACRYLIC ACID, (C1-C4)-ALKYL ESTERS OF METHACRYLIC ACID, VINYL FORMATE, VINYL ACETATE, VINYL PROPIONATE, VINYL CHLORIDE AND VINYLIDENE CHLORIDE AND A FREE-RADICAL INITIATOR AT A TEMPERATURE IN THE RANGE OF ROOM TEMPERATURE TO ABOUT 125*C. TO EFFECT POLYMERIZATION AND TO PRODUCE POLYMR PARTICLES STABLY DISPERSED IN THE MEDIUM WHICH ARE UNDISSOLVED IN THE MEDIUM AND HAVE SIZES RANGING FROM ABOUT 0.1 TO 2 MICRONS, THE WEIGHT RATIO OF POLYESTER TO MONOMER BEING FROM 5:95 TO 20:80, AND THE PROPORTION OF INITIATOR BEING FROM 0.001 TO 10% OF THE WEIGHT OF HTE MONOMER.