Low melting mesophase pitches

Patent · Tue Apr 17 00:00:00 EST 1984

OSTI ID:6608715

Diefendorf, R J; Chen, S H

A low melting point, low molecular weight, heptane insoluble, 1,2,4-trichlorobenzene soluble mesophase pitch useful in carbon fiber spinning as such or as a plasticizer in a carbon fiber spinning composition is obtained by heating chrysene, triphenylene or paraterphenyl as well as mixtures thereof and hydrocarbon fractions containing the same, dissolving the resulting heat treated material with 1,2,4-trichlorobenzene, and separating the insolubles, and then contacting the 1,2,4-trichlorobenzene soluble fraction with a sufficient amount of heptane to precipitate the low melting point, low molecular weight mesophase pitch.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4443324
• OSTI ID: 6608715
• Resource Relation: Patent File Date: Filed date 14 Jun 1982; Other Information: PAT-APPL-388479
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CARBON FIBERS
FABRICATION
PITCHES
PRECIPITATION
PRODUCTION
BENZENE
CATALYSTS
CHEMICAL COMPOSITION
CHRYSENE
DISSOLUTION
HEAT TREATMENTS
HEPTANE
PETROLEUM FRACTIONS
SEPARATION PROCESSES
SOLUBILITY
ALKANES
AROMATICS
CONDENSED AROMATICS
ENERGY SOURCES
FIBERS
FOSSIL FUELS
FUELS
HYDROCARBONS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
020500* - Petroleum- Products & By-Products