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U.S. Department of Energy
Office of Scientific and Technical Information

Production of carbon artifact precursors

Patent ·
OSTI ID:6400557
A low coking pitch suitable for carbon artifact manufacture, especially carbon fiber manufacture, is obtained by heat soaking and vacuum stripping the distillate recovered from cat cracker bottoms. Preferably a cat cracker bottom distillate boiling in the range of about 450 to 510/sup 0/C. At 760 mm hg is heat soaked at about 350 to about 500/sup 0/C for up to about 20 hours and then vacuum stripped at below 400/sup 0/C.
Assignee:
Exxon Research and Engineering Co
Patent Number(s):
US 4363715
OSTI ID:
6400557
Country of Publication:
United States
Language:
English