Studies on Polyvinyl Chloride. I. Reduction to a Hydrocarbon Polymer

Divergent silylium catalysis enables facile poly(vinyl chloride) upcycling to poly(ethylene-co-styrene) derivatives

“…For example, Cotman, Starnes, Millán and others reductively dechlorinated PVC using main group element hydrides at mild temperatures to yield polyethylene-like polymers. [8][9][10][11][12][13] Direct substitution of PVC has also been achieved using Friedel-Cras alkylation chemistry. This transformation has been used to gra allylic and aromatic groups onto PVC using Lewis acid catalysts.…”

Structural aspects of suspension poly(vinyl chloride): relationship between molecular structure and structural order

“…The gradual shift of these reflections toward larger scattering angles is associated with a more efficient packing of the polymer chains. The appearance of a weak shoulder in the scattering pattern of 21° ( 26) for the samples with a relatively high degree of chlorine substitution (Figure 2e,f) is connected with the crystallization of ethylene sequences. The presence of an additional endotherm at approximately 50 °C in the DSC thermograms of these samples (Figure 3d,e) can also be ascribed to this phenomenon.…”

“…Monochromatic Cu Kci radiation ( = 1.542 Á) was obtained by a graphite monochromator positioned in the diffracted beam. The scattering patterns were recorded in the reflection mode as a function of the scattering angle 26 from 10°t o 50°with a step size of 0.04° (26) and a measuring time of 40 s/step. More detailed information about the experimental conditions of the DSC and WAXS measurements has been reported elsewhere.15-17…”

High-Resolution NMR Study of Chlorinated Polyethylenes

“…On the other hand, whole polymers for which chlorinecontent distribution was ascertained to be uniform by column fractionation, 24 were designated W in Tables III, IV, and V. Hydrogenated poly(vinyl chloride) (HPVC) containing 42.8 wt% and 47.7 wt% of chlorine were prepared by the method of Cotman. 19 a, w-Dichloroparaffins (CH2Cl (CH2)n CH2Cl) were obtained from K & K Laboratories, Inc., U.S.A. VC-Et copolymer was prepared with hydroperoxides and a trialkylboron as catalysts. 11…”