Method of processing carbon fiber precursor from pitchy material

Coating processes – With post-treatment of coating or coating material – Heating or drying

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264130, 264 292, 264 295, 428375, 428391, 428408, 4234471, 252 34, 252 495, 252 496, 252 515R, 252 52A, B05D 302, B27B 1700, D01F 912, B32B 900

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050573411

ABSTRACT:
Carbon fiber precursors from pitchy materials are processed by applying thereonto an aqueous emulsion containing a single silicone oil or a mixture of silicone oils selected from polydimethyl siloxane, phenyl modified polydimethyl siloxane and aminoalkyl modified polydimethyl siloxane and having kinetic viscosity at 25.degree. C. of 100 centistokes or less, an alkanolamine salt of aliphatic monocarboxylic acid with 8-18 carbon atoms, and one or more non-ionic surfactants selected from polyoxyethylene alkylphenylethers polyoxyethylene alkylates, polyoxyethylene alkylaminoethers, and aliphatic monocarboxylic alkanolamides such that 0.1-5 wt % by solid deposit on fiber from this aqueous emulsion apply to the pitch fibers during any of the processes from the spinning and to the oxidizing.

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