Production of mesophase pitches, carbon fiber precursors, and carbonized fibers
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United States of America Patent
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Mar 25, 1997
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N/A
app pub date -
Sep 11, 1992
filing date -
Jun 20, 1989
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Abstract
Producing carbon fiber precursors and carbonized fibers comprise by treating a thin film of catalytic pitch at elevated temperature conditions, treating the resulting heavy isotropic pitch by agitating with an inert gas under elevated temperature conditions to form a mesophase pitch, forming green fibers from said mesophase pitch, stabilizing and optionally carbonizing said green fibers to obtain the desired product.
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