New Poly(carboranylmethyldiorganosiloxane)s and Vulcanizates Based on Them


New high-temperature resistant poly(carboranylmethyldiorganosiloxane)s have been synthesized by the polycondensation of 1,7-bis-[hydroxy(dimethyl)silylmethyl]-m-carborane with bis-(dimethylamino)diorganosilanes. It has been shown that the replacement of dimethylsiloxane units in polymer chain by methylphenylsiloxane or diphenylsiloxane units leads to formation of amorphous polymers. The polymers show high thermal stability and resistance to alkaline reagent. Thermally stable and fire resistant vulcanizates showing high strength within –40 to +300°C (in air) have been obtained from the poly(carboranylsiloxane)s.

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This work was supported by the Ministry of Science and Higher Education of the Russian Federation and performed using the equipment of the Center for Molecular Structure Studies, Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences.

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Correspondence to V. A. Vasnev.

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Izmailov, B.A., Vasnev, V.A. & Markova, G.D. New Poly(carboranylmethyldiorganosiloxane)s and Vulcanizates Based on Them. Polym. Sci. Ser. B 62, 176–181 (2020).

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