Poly-a-chloroacrylonitrile

This reaction has recently been applied with success5 s for the modification of poly-(a-chloroacrylonitrile). As reported by the authors, the level of conversion of the nitrile groups into thioamide groups reaches 90%. 

Poly(a-chloroacrylonitrile) decomposes to low molecular weight compounds when treated with nucleophiles [A,iV-diethyldithiocarbamate (Et2NCS2 ), PhS and azide ions]. An2 SRN mechanism was suggested for this reaction, in which an ET to the polymer leads to a radical and chloride ion. Coupling with the nucleophile and decomposition are the main reactions proposed for the radical intermediates98. The reaction of 2-chloro-2-methylpropionitrile, as a model compound, with TV, A-diethyldithiocarbamate (52% yield) and PhS (61% yield) was studied98. 

POLYMETHACRYLONITRILE, POLY-a-PHENYLACRYLONITRILE, POLY-a-CHLOROACRYLONITRILE AND POLYVINYLIDENE CYANIDE [141]... 

Polymethacrylonitrile and poly(a-chloroacrylonitrile) have also been studied. In the latter polymer there is competition between dehydrochlorination reactions and the cyclization of cyano groups. 

The degradation of poly(a-chloroacrylonitrile) has also been studied. If the polymer were first partially dehydrochlorinated by treatment with triethylamine then cyclization of cyanide groups was inhibited. ... 

The photodegradation and photo-oxidative degradation of polyacrylonitrile [41, 302, 1200, 1951, 2313] and its copolymers such as poly(acrylonitrile-co-isopropyl ketone) [41], poly(acrylonitrile-co-methyl methacrylate) [820], poly(acrylonitrile-co-2 naphthyl methacrylate [338], poly(acrylonitrile-co-butadiene) [24,2001], poly(acrylonitrile-co-styrene) [232, 747], poly(acrylo-nitrile-co-p-styrene) [232] and poly(a-chloroacrylonitrile-co-methyl methacrylate) [820] have been studied in detail. 

Photodegradation of poly(a-chloroacrylonitrile) (3.50) occurs via C—Cl scission to give a chlorine radical followed by its reaction with an adjacent hydrogen atom to give HCl and a double bond [820] ... 

Poly(a-chloroacrylonitrile-co-me%l methacrylate) >150 Hydrogen chloride, methyl methacrylate, a-chloroacrylonitrile 125... 

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