Reference

Effect of chloroacetic acid esters on the radiation-induced polymerization of vinyl monomers

Effect of chloroacetic acid esters on the radiation-induced polymerization of vinyl monomers. Lebedev, V. T.; Suminov, S. I.; Voronina, T. A. (USSR). Plast. Massy, (7), 66-7 (Russian) 1977. CODEN: PLMSAI. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) The alkyl chloroacetates ClnH3-nCCO2R (I, R = Me, Et, octyl, n = 1-3) accelerated the radical polymn. of styrene or Me methacrylate (II) in bulk or in monomer-impregnated wood. The most active polymn. promoters were the di- and trichloroacetates and esters with short-chain R groups. In the polymn. of II at 30-40% conversion, I (R = Me, n = 3) [598-99-2] accelerated the reaction by 2.5 fold, I (R = Me, n = 2) [116-54-1] accelerated it by 1.7 fold, and I (R = Me, n = 1) [96-34-4] had little accelerating influence. The accelerating influence of I is attributed to the formation of chloromethyl radicals. The presence of the Cl-contg. additives decreased the flammability of impregnated wood.

Methyl dichloroacetate

Methyl dichloroacetate. Kittel, Hans Otto (Ger. Dem. Rep. 116-54-1 and 143-33-9 are also occured in this study. ). Ger. (East) DD 203044 A1 12 Oct 1983,5 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C07C069-63. APPLICATION: DD 82-237338 11 Feb 1982. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) Cl2CHCO2Me (I) was prepd. from chloral and MeOH in the presence of a NaCN catalyst, which was added in 2 sep. portions. Thus, 350 kg chloral was added over 2.25 h to a suspension of 200 kg Na2CO3 and 13 kg NaCN in 400 L MeOH, the mixt. was heated at 60-65°, 13 kg fresh NaCN was added, and an addnl. 180 kg chloral was added at this temp. over 1.25 h to give 70% I. .