Patent Number: 6,967,179

Title: Process for manufacturing boron nitride fibers from borylborazines

Abstract: The aim of the present invention is a process for manufacturing boron nitride fibers, in particular continuous boron nitride fibers with good mechanical properties, which may be used for producing ceramic composite materials such as BN/BN composites, thermostructural parts or antenna radomes. It provides and uses a precursor polymer of formula (I) below: ##STR1## in which n is a whole number, R.sup.1 and R.sup.2, identical or different, represent independently an alkyl group, and R.sup.3 represents an amino group, a hydrogen atom, an alkyl, a cycloalkyl or a boryl.

Inventors: Miele; Philippe (Lyon, FR), Toury; Berangere (Nogent sur Marne, FR), Bernard; Samuel (Prisches, FR), Cornu; David (Villeurbanne, FR), Ayadi; Khaled (Le Pont de Claix, FR), Rousseau; Loic (St Aubin de Medoc, FR), Beauhaire; Guy (Bougival, FR)

Assignee: Eads Launch Vehicles

International Classification: C04B 35/583 (20060101); C04B 35/622 (20060101); C08G 79/08 (20060101); C08L 85/00 (20060101); C08G 79/00 (20060101); C08L 85/04 (20060101); H01Q 1/42 (20060101); H01L 23/34 (20060101); H01L 23/373 (20060101); C04B 035/00 ()

Expiration Date: 1/22/02018