Reference

Study of the kinetics of

Study of the kinetics of .alpha.-chloroacrylonitrile polymerization. Tagieva, F. M.; Ibragimova, S. M.; Mamedov, F. V.; Lech, N. (Azerb. Inst. Nefti Khim., Baku, USSR). Azerb. Khim. Zh., (1), 52-6 (Russian) 1977. CODEN: AZKZAU. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Polymn. of .alpha.-chloroacrylonitrile [920-37-6] in the presence of (NH4)2S2O8-Na2S2O3 redox catalyst in aq. H2SO4 was 1st order in the monomer. The rate consts. at 85.degree. were (0.689-o.982) .times. 105 s-1 and were proportional to the square root of the catalyst concn. The overall activation energy of the polymn. (75-90.degree.) was cald. as 13.6 kcal/mol (13.9 kcal/mol as detd. graphically).

Radical copolymerization of cyclic acetals derived from acrolein, 1

Radical copolymerization of cyclic acetals derived from acrolein, 1. Copolymerization with acrylonitrile and .alpha.-chloroacrylonitrile. Acosta, Jose Luis; Mateo, Jose Luis; Sastre, Roberto (Inst. Plast. Caucho, Patronato "Juan de la Cierva", Madrid, Spain).There are some reagents with their cas registry numbers 13260-75-8 and 29178-30-1 are used in this study. Makromol. Chem., 178(3), 751-6 (English) 1977. CODEN: MACEAK. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Since the reactivity of the acrylic radical with acrylonitrile [107-13-1] or .alpha.-chloroacrylonitrile [920-37-6] is greater than the reactivity with 2-vinyl-1,3-dioxane [5935-25-1] or its 5,5-bis(hydroxymethyl) [29178-30-1] or 5,5-dimethyl deriv. [13260-75-8], basically, the copolymer chains contain long acrylic sequences bonded by acetalic units. In bulk or in DMF, the copolymn. rate increases or decreases, resp., with increasing acetal content of the feed. .