Boron/nitrogen preceramic polymers and boron nitride ceramic mat

Details Boron/nitrogen preceramic polymers and boron nitride ceramic mat Boron/nitrogen preceramic polymers and boron nitride ceramic mat

1990-03-30

1992-03-17

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

525 50, 528 4, 528 5, C04B 3558

Patent

active

050968610

ABSTRACT:
Crosslinked boron
itrogen preceramic polymers are prepared by reacting (a) admixture of a trihalogenoborane A and a compound B containing at least one dihalogenated boron atom, with (b) an amino compound C containing at least one --NH.sub.2 group; the resulting polymers are facilely pyrolyzed into boron nitride ceramic materials.

REFERENCES:
patent: 4581468 (1986-04-01), Paciorek et al.
patent: 4767728 (1988-08-01), Riccitiello et al.
patent: 4810436 (1989-03-01), Johnson
patent: 4857490 (1989-08-01), Johnson

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