of a vinyl halide and a monomer copolymerizable therewith examples of monomers which are copolymerizable with vinyl chloride include vinylidene chloride vinyl acetate vinyl alkyl esters such as vinyl neodecanoate ethylene propylene isobutylene acrylonitrile ester of acrylic and methacrylic acids such as methyl ethyl butyl propyl 2 ethylhexyl hexyl acrylate and methacrylate esters of maleic acid such as diethyl dipropyl dihexyl and dioctyl maleate any of the initiators ordinarily used in the suspension polymerization of vinyl chloride can be used in my process examples of suitable initiators include organic peroxides such as benzoyl peroxide lauroyl peroxide and diisopropyl peroxydicarbonate azo compounds such as azobisisobutylronitrile and the like oil soluble catalysts also any of the suspending agents normally used in the suspension polymerization of vinyl chloride can be used in my process examples of suitable suspending agents include natural high molecular substances such as starch and gelatin and synthetic high molecular substances such as partially saponified polyvinyl alcohol methyl cellulose ethyl cellulose hydroxypropoxymethyl cellulose maleic anhydride vinyl ether copolymer and polyvinyl pyrrolidine and the like inasmuch as there are many references patents books encyclopedias etc which teach the amounts of water monomer initiator and suspending agent which are used in suspension polymerization processes it is not believed necessary to describe suitable amounts herein any of the conventional primary or secondary plasticizers which are conventionally used in the preparation of vinyl polymers.