Title:
METHOD FOR THE SYNTHESIS OF A CHLORINE-FREE, PRE-CERAMIC POLYMER FOR THE PRODUCTION OF CERAMIC MOLDED BODIES
Document Type and Number:
WIPO Patent Application WO/2014/090934
Kind Code:
A8
Abstract:
A method for producing a polysilane includes a disproportionation reaction of a methylchlorodisilane mixture to form chlorine-containing oligosilane, a substitution reaction of the chlorine atoms contained in the oligosilane by the reaction with a primary amine and a cross-linking reaction of the oligosilanes using a chain former to form polysilanes. The obtained polysilanes are infusible and are very suitable for being spun to form green fibers and processed to form silicon carbide fibers and fiber composites. The method is characterized in that it can be carried out cost-effectively and quickly and with very high yields.
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Inventors:
GRABE NORMAN (DE)
ROTHMANN MICHAEL (DE)
ROTHMANN MICHAEL (DE)
Application Number:
PCT/EP2013/076349
Publication Date:
October 02, 2014
Filing Date:
December 12, 2013
Export Citation:
Assignee:
SGL CARBON SE (DE)
International Classes:
C08G77/60; C04B35/622; C08G77/50
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