Continuous process for the production of vinyl chloride polymers in aqueous suspension

Abstract From the Canadian patent

Abstract of the disclosure:, The process is described for the continuous suspension polymerization of vinyl chloride in aqueous phase in which the polymerization mixture is subjected in 2, zones, to treatment employing different process parameters in respect of final conversion, dwell time number of, theoretical cascade stages and stirrer power applied. this procedure gives a good space-time yields, very uniform products which have a narrow particle size distribution, a high bulk density, good flow and low speck count. In spite of using standard kettle material only a very low formation of deposit on the kettle walls is observed.