Abstract
Polymers of vinyl chloride were prepared by a Redox system at 50 and -5°C. Two graft polymers were also obtained at these temperatures. The 2nd-order transition points and densities of these polymers were measured. By using LiA1H4, these polymers were reduced to polyethylenes, of which the degree of crystallinity and the softening points were determined. From these results, it was obserbed that the polyvinyl chloride polymerized at lower temperature had less branches and more stereoregularity.