Accession Number:

ADA167015

Title:

Organosilicon Compounds and Organosilicon Polymer Intermediates.

Descriptive Note:

Final rept. 1 Oct 82-30 Jun 85,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1985-12-09

Pagination or Media Count:

10.0

Abstract:

A. The sodium condensation of CH3SiHCl2 has been studied. It gives products of type CH3SiHxCH3Siyn which are not useful precursors for SiC. b. Base-catalyzed reorganization of the polysilanes in a gives new materials whose pyrolysis gives markedly higher ceramic yields. c. Useful preceramic hybrid polymers are obtained by the reaction of the polysilanes in a with a poly silylamide of type CH3SiHNHaCH3SiNb-CH3SiHNKcm. d. This hybrid polymer approach also is useful in upgrading th Yajima polycarbosilane. e. The polysilanes of a also may be converted to useful preceramic materials by reaction with polyvinyl compounds, notably cyclo-CH2CHCH3Si-NH3. Keywords Preceramic polymers Organosilicon chemistry Silicon carbide and Silicon nitride.

Subject Categories:

  • Polymer Chemistry
  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE