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α-ω-Bifunctional oligomers from copolymers of conjugated dienes with isobutene

✍ Scribed by C. Guizard; H. Cheradame

Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
310 KB
Volume
17
Category
Article
ISSN
0014-3057

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✦ Synopsis

The selective oxidative cleavage of unsaturated copolymers of isobutene with conjugated diene using ruthenium tetroxide has been carried out, giving various bifunctional oligomers. A comparison between molecular weight determination and microanalysis seems to show that the nearly perfect bifunctionality obtained for the cleavage of 2,3-dimethylbutadiene-isobutene copolymer is due to the almost enclusive 1-4 configuration of the diene unit in the copolymer; some non-l-4 incorporation is apparent in the case of 1,3-pentadiene.

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