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The organo-metal initiated polymerization of vinyl ketones—II: The triethylaluminium initiated polymerization of methyl isopropenyl ketone

✍ Scribed by A.R. Lyons; E. Catterall

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
580 KB
Volume
7
Category
Article
ISSN
0014-3057

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✦ Synopsis

Almtmet--A study has been made of the kinetics and mechanism of the triethylaluminium initiated polymerization at 0 ° of methyl isopropenyl ketone (3-methyl-but-3-ene-2-one) in toluene and tetrahydrofuran. The reaction between triethylaluminium and methyl isopropenyl ketone gives rise to a yellow "ate"-complex which rearranges to the initiating species. A rapid production of linear trimer is followed by a slow polymerization giving rise to a bimodal molecular weight distribution. A coordinate mechanism for the polymerization is proposed.

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