abstract |
1. IN THE WELL KNOWN METHOD FOR PRODUCING POLYVINYL CHLORIDE BY POLYMERIZING VINYL CHLORIDE MONOMER IN AN AQUEOUS DISPERSION MEDIUM UTILIZING A SUSPENSION STABILIZER, AN INITIATOR, AND A CONVENTIONAL TEMPERATURES, PRESSURES, AND REACTION TIMES, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS THE SUSPENSION STABILIZER, 0.01-2.0% BY WEIGH WEIGHT OF A POLYETHYLENE OXIDE AND 0.01-2.0% BY WEIGHT OF A NONIONIC SURFACTANT BASED UPON THE WEIGHT OF THE MONOMER, THE WEIGHT AVERAGE MOLECULAR WEIGHT OF SAID POLYETHYLENE OXIDE BEING WITHIN THE RANGE OF 4X10**4-1.2X10**6 |