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Copolymerization of ethylene and chlorotrifluoroethylene by trialkylboron catalysts—I. Polymerization and reactivity ratios

✍ Scribed by M. Ragazzini; C. Garbuglio; D. Carcano; B. Minasso; Gb. Cevidalli

Publisher
Elsevier Science
Year
1967
Tongue
English
Weight
388 KB
Volume
3
Category
Article
ISSN
0014-3057

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✦ Synopsis

The results of ethylene--chlorotrifluoroethylene copolymerizations promoted by a boron alkyl catalytic system at temperatures between -78 ° and + 60 ° are reported. The monomer reactivity ratios and their variation with temperature have been studied. The distribution of monomer units along the copolymer chain as a function of feed composition, at different temperatures, has been calculated. A copolymer very close to 1 : 1 molar composition, in which the monomers alternate with nearly perfect regularity along the chain, is obtained from polymerization at low temperatures over a wide range in monomer composition.

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