Coating processes – Heat decomposition of applied coating or base material
Patent
1988-02-09
1990-08-07
Bell, Janyce
Coating processes
Heat decomposition of applied coating or base material
423290, 423291, 423439, 427227, 427341, 427343, 427377, 425436R, 526239, B05D 302, C01B 21064, C08F13006
Patent
active
049467131
ABSTRACT:
Novel poly(alkenylpentaboranes) such as poly-2-vinylpentaborane are useful as precursors to BN or B.sub.4 C ceramics. The non-crosslinked poly(alkenylpentaboranes), which are soluble in common inert organic solvents, are prepared heat treatment of corresponding alkenylpentaboranes. The non-crosslinked poly(alkenylpentaboranes) are heated under an inert atmosphere to crosslink them, and the crosslinked products are pyrolyzed to yield B.sub.4 C. Alternatively, the non-crosslinked poly(alkenylpentaboranes) are heated in the presence of ammonia to yield a nitrogen-containing polymer which, upon pyrolysis, yields BN.
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Mirabelli Mario G. L.
Sneddon Larry G.
Bell Janyce
University of Pennsylvania
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