The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2013
Filed:
May. 02, 2005
Juergen Clade, Wuerzburg, DE;
Erich Seider, Rimpar, DE;
Dieter Sporn, Wuerzburg, DE;
Erika Brendler, Freiberg, DE;
Thomas Lange, Chemnitz, DE;
Gerhard Roewer, Freiberg, DE;
Dorit Mainhold, Dresden, DE;
Juergen Clade, Wuerzburg, DE;
Erich Seider, Rimpar, DE;
Dieter Sporn, Wuerzburg, DE;
Erika Brendler, Freiberg, DE;
Thomas Lange, Chemnitz, DE;
Gerhard Roewer, Freiberg, DE;
Dorit Mainhold, Dresden, DE;
Abstract
The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution. Said method comprises the preparation of a polysilane, obtained by the disproportionation of a methylchlorodisilane or a mixture of methylchlorodisilanes of formula Si2MeC1with a Lewis base as the catalyst, a subsequent thermal cross-linking of the polysilane to form an infusible polysilane-polycarbosilane copolymer that is soluble in inert solvents, in addition to the production of said solution by the dissolution of the polysilane-polycarbosilane copolymer in an inert solvent. The invention also relates to a method for producing oxygen-depleted ceramic fibers and other molded bodies with a composition similar to that of SiC. Said method comprises the spinning of the solution to obtain green fibers according to the dry spinning method and the pyrolysis of the dried green fibers in an inert gas atmosphere or a reductive atmosphere.