Polymerization of vinyl compounds

Claim 1

IN A PROCESS OF PREPARING A FLUID POLYMER LATEX OF HIGH CONCENTRATION HAVING POLYMER PARTICLES OF A UNIFORM SIZE BETWEEN 500 AND 20,000 ANGSTROM UNITS IN AVERAGE DIAMETER, THE STEPS WHICH COMPRISE PREPARING AN AQUEOUS DISPERSION CONTAINING A KNOWN QUANTITY OF POLYMER PARTICLES OF AN AVERAGE DIAMETER ABOVE 100 ANGSTROM UNITS BUT BELOW THAT OF THE PARTICLES OF SAID FINAL FLUID LATEX, SAID POLYMER PARTICLES BEING PREPARED BY THE POLYMERIZATION IN AQUEOUS DISPERSION OF A POLYMERIZABLE ORGANIC COMPOUND WHICH CONTAINS A SINGLE OLEFINIC DOUBLE BOND IN THE GROUPING CH2=C< AND WHICH UNDERGOES ADDITION POLYMERIZATION IN AQUEOUS DISPERSION TO FORM HIGH MOLECULAR WEIGHT LINEAR POLYMER, THE QUANTITY OF SAID POLYMER PARTICLES PRESENT IN SAID DISPERSION BEING FROM 0.05 TO 50.0% OF THE WEIGHT OF POLYMER PRESENT IN SAID FINAL FLUID LATEX, ADDING TO SAID DISPERSION A MONOMERIC MATERIAL WHICH CONTAINS A SINGLE DOUBLE BOND IN THE GROUPING CH2=C< AND WHICH UNDERGOES ADDITION POLYMERIZATION IN AQUEOUS DISPERSION TO FORM HIGH MOLECULAR WEIGHT LINEAR POLYMER, CAUSING POLYMERIZATION OF SAID MONOMERIC MATERIAL TO TAKE PLACE IN SAID DISPERSION, ADDING A DISPERSING AGENT TO SAID AQUEOUS DISPERSION WHILE SAID POLYMERIZATION PROGRESSES, REGULATING SAID ADDITION OF SAID DISPERSING AGENT TO MAINTAIN ON THE SURFACE OF SAID PARTICLES THROUGHOUT SAID POLYMERIZATION BETWEEN 20% AND 60% OF THE AMOUNT OF DISPERSING AGENT THEORETICALLY REQUIRED TO PROVIDE A CLOSELY PACKED UNIMOLECULAR LAYER OF SAID DISPERSING AGENT, AND STOPPING SAID POLYMERIZATION WHEN THE ORIGINAL POLYMER PARTICLES HAVE REACHED THE DESIRED SIZE IN THE RANGE OF 500 TO 20,000 ANGSTROM UNITS.