synopsisThe system comprising the ethoxydized product of triethylaluminum, cuprous chloride, and carbon tetrachloride was used as an initiator for polymerization of vinyl chloride, and the polymerization kinetics was studied. From plots of the molar number of number-average polymer chain Y/p versus yield Y, the two parameters a ( =JR,dt -1/*JR&) and b (=JR,&/JR,&) were estimated to be 6 X mole/l. and 6.6 X lo-' respectively. Studies of the tacticity of the poly(viny1 chloride) showed isotactic =49.3% and syndiotactic = 50.7%. The present initiator also permitted mpolymerization of vinyl chloride with carbon monoxide; the monomer reactivity ratios were n = 0.40 (vinyl chloride) and rs = 0.01 (carbon monoxide).
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