Boron nitride preceramic polymers

Details Boron nitride preceramic polymers Boron nitride preceramic polymers

1987-11-13

1990-03-06

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

528 12, 528 30, C07F 505, C07F 710, C07F 721

Patent

active

049067630

ABSTRACT:
A preceramic substituted borazine polymer of the formula: ##STR1## wherein R is methyl, ethyl, propyl, or butyl, and x is a positive integer. Also disclosed are methods for making the polymer, methods for converting the polymer into coatings, shaped articles, articles including fibers and filaments formed from the polymer, blends of the foregoing polymer and preceramic triamino-N-tris (trialkylsilyl) borazines, and methods for thermally decomposing the foregoing polymers to form shaped articles of boron nitride.

REFERENCES:
patent: 3382279 (1968-05-01), Horn et al.
patent: 4581468 (1986-04-01), Paciorek et al.
patent: 4707556 (1987-11-01), Paciorek et al.
Paciorek et al., "Boron-Nitrogen Polymers, I, Mechanistic Studies of Borazine Pyrolysis".
Paciorek et al., "Study of Borazine Condensation Process".

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