CYCLOLINEAR, POLYCYCLIC POLY- AND COPOLYORGANOCYCLOCARBOSILOXANES AS PRECERAMIC TEMPLATES FOR OXYGEN-FREE SILICON CARBIDE CERAMICS AND A METHOD FOR PREPARATION THEREOF

CYCLOLINEAR, POLYCYCLIC POLY- AND COPOLYORGANOCYCLOCARBOSILOXANES AS PRECERAMIC TEMPLATES FOR OXYGEN-FREE SILICON CARBIDE CERAMICS AND A METHOD FOR PREPARATION THEREOF

FIELD: organosilicon polymers. ^ SUBSTANCE: novel polycyclic poly- and copolyorganocyclocarbosiloxanes with variable cycle size including structural motif of general formula: , wherein (1) x=3 or 4 and y=1, (2) x=2 and y=2, (3) x=3, and suitable as preceramic templates for manufacturing oxygen-free...

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Hauptverfasser: CHIZHOVA NATAL'JA VIKTOROVNA, MAKAROVA NATALIJA NIKOLAEVNA, ASTAPOVA TAT'JANA VASIL'EVNA, PETROVA IRINA MIKHAJLOVNA
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Sprache:eng ; rus
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CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator CHIZHOVA NATAL'JA VIKTOROVNA
MAKAROVA NATALIJA NIKOLAEVNA
ASTAPOVA TAT'JANA VASIL'EVNA
PETROVA IRINA MIKHAJLOVNA
description FIELD: organosilicon polymers. ^ SUBSTANCE: novel polycyclic poly- and copolyorganocyclocarbosiloxanes with variable cycle size including structural motif of general formula: , wherein (1) x=3 or 4 and y=1, (2) x=2 and y=2, (3) x=3, and suitable as preceramic templates for manufacturing oxygen-free silicon carbide ceramics are prepared by Würtz reaction in toluene via interaction of chloro-derivatives of organocarbosilanes with metallic sodium in the form of suspension. ^ EFFECT: enlarged assortment of preceramic templates. ^ 2 cl, 1 tbl, 3 ex
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title CYCLOLINEAR, POLYCYCLIC POLY- AND COPOLYORGANOCYCLOCARBOSILOXANES AS PRECERAMIC TEMPLATES FOR OXYGEN-FREE SILICON CARBIDE CERAMICS AND A METHOD FOR PREPARATION THEREOF
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