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...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	CHIZHOVA NATAL'JA VIKTOROVNA, MAKAROVA NATALIJA NIKOLAEVNA, ASTAPOVA TAT'JANA VASIL'EVNA, PETROVA IRINA MIKHAJLOVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	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