Silicon-boron-carbon-nitrogen ceramics and precursor compounds, methods for the salt-free polymerisation of RnHal3-nSi-X-BRmHal2-m

US8354489B2 · kind B2 · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Markus Weinmann · Goslar, DE
• Martin Jansen · Bonn, DE

Key dates

• Filing date: Apr 7, 2009
• Grant date: Jan 15, 2013
• Expiry date: Oct 28, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/589
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to novel methods for the salt-free polymerization of borosilylamines, which comprise the structural feature Si—N—B and borosilyl hydrocarbons, which comprise the structural feature Si—X—B, wherein X may be a methylene group or a hydrocarbon chain CxHy or a cyclic hydrocarbon unit, by reaction thereof with disilazanes R3Si—NR—SiR3.