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Polymers with Regular Alternation of 1,7-Bis[(dimethyl)silylmethylene]-m-carborane and Diorganosiloxane Units

Polymers with Regular Alternation of 1,7-Bis[(dimethyl)silylmethylene]-m-carborane and... ISSN 0012-5008, Doklady Chemistry, 2019, Vol. 488, Part 2, pp. 249–251. © Pleiades Publishing, Ltd., 2019. Russian Text © The Author(s), 2019, published in Doklady Akademii Nauk, 2019, Vol. 488, No. 4. CHEMISTRY Polymers with Regular Alternation of 1,7-Bis[(dimethyl)silylmethylene]-m-carborane and Diorganosiloxane Units a a a, B. A. Izmaylov , V. A. Vasnev , and G. D. Markova * Presented by Academician A.R. Khokhlov July 4, 2019 Received July 11, 2019 Abstract—New highly thermally stable carboranylmethyl-containing diorganosiloxane polymers were obtained by polycondensation of equimolar amounts of 1.7-bis[hydroxy(dimethyl)silylmethylene]-m-carbo- rane and bis(dimethylamino)diorganosilanes. It was shown that replacement of 24 to 33 mol % of dimethyl- siloxane units in the polymer backbone by methyl(phenyl)siloxane or diphenylsiloxane units containing bulky phenyl groups results in the formation of only amorphous polymers. The polymers are readily soluble in organic solvents and have high thermal stability. DOI: 10.1134/S001250081910001X Quite a number of polymers containing silicon rodiorganosilanes with dimethylamine in diethyl derivatives of carboranes (Cb) with a Si–C bond are ether. The polymers were obtained by polycondensa- Cb tion of the diol with bis(dimethylamino)diorganosila- currently known [1]. The key drawback of these poly- nes in toluene at 60°C (Scheme 1). mers is that the Si–C bond is unstable http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Doklady Chemistry Springer Journals

Polymers with Regular Alternation of 1,7-Bis[(dimethyl)silylmethylene]-m-carborane and Diorganosiloxane Units

Izmaylov, B.; Vasnev, V.; Markova, G.
Doklady Chemistry , Volume 488 (2) – Nov 12, 2019
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References (4)

Publisher
Springer Journals
Copyright
Copyright © 2019 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
0012-5008
eISSN
1608-3113
DOI
10.1134/S001250081910001X
Publisher site
See Article on Publisher Site

Abstract

ISSN 0012-5008, Doklady Chemistry, 2019, Vol. 488, Part 2, pp. 249–251. © Pleiades Publishing, Ltd., 2019. Russian Text © The Author(s), 2019, published in Doklady Akademii Nauk, 2019, Vol. 488, No. 4. CHEMISTRY Polymers with Regular Alternation of 1,7-Bis[(dimethyl)silylmethylene]-m-carborane and Diorganosiloxane Units a a a, B. A. Izmaylov , V. A. Vasnev , and G. D. Markova * Presented by Academician A.R. Khokhlov July 4, 2019 Received July 11, 2019 Abstract—New highly thermally stable carboranylmethyl-containing diorganosiloxane polymers were obtained by polycondensation of equimolar amounts of 1.7-bis[hydroxy(dimethyl)silylmethylene]-m-carbo- rane and bis(dimethylamino)diorganosilanes. It was shown that replacement of 24 to 33 mol % of dimethyl- siloxane units in the polymer backbone by methyl(phenyl)siloxane or diphenylsiloxane units containing bulky phenyl groups results in the formation of only amorphous polymers. The polymers are readily soluble in organic solvents and have high thermal stability. DOI: 10.1134/S001250081910001X Quite a number of polymers containing silicon rodiorganosilanes with dimethylamine in diethyl derivatives of carboranes (Cb) with a Si–C bond are ether. The polymers were obtained by polycondensa- Cb tion of the diol with bis(dimethylamino)diorganosila- currently known [1]. The key drawback of these poly- nes in toluene at 60°C (Scheme 1). mers is that the Si–C bond is unstable

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Doklady Chemistry – Springer Journals

Published: Nov 12, 2019

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