High temperature, low oxidation stabilization of pitch fibers

Details High temperature, low oxidation stabilization of pitch fibers High temperature, low oxidation stabilization of pitch fibers

1998-03-31

2000-09-26

Myers, Helane

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

Chemical modification of asphalt, tar, pitch or resin

4234471, 4234476, 4234478, 208 39, C10C 120, D01F 912

Patent

active

061238295

ABSTRACT:
The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen diffusion rate to the center of the fiber which is competitive with the rate of oxidation at the fiber's surface. Further, the present invention provides a high density pitch fiber batt which thermosets without loss of fiber structure.

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