Polymeric multinary azanes, methods for their preparation and their use

US5567832A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Nils Perchenek · Leverkusen, DE
• Hans-Peter Baldus · Burscheid, DE
• Josua L offelholz · Bonn, DE
• Martin Jansen · Bonn, DE

Key dates

• Filing date: Apr 25, 1994
• Grant date: Oct 22, 1996
• Expiry date: Apr 25, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G79/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to polymeric multinary azanes built up from units of the general formula [E(NR.sup.1 R.sup.2).sub.a (NR.sup.3).sub.b/2 ], wherein E may be B,Al,Ga,In,Si,Ge,Ti, Zr, Hf,V,Nb,Ta,Cr,Mo or W and R.sup.1,R.sup.2,R.sup.3 may be H, C.sub.1 -C.sub.6 alkyl, vinyl or phenyl; methods for the preparation of these polymers and their use as precursors for high-performance ceramics.