Method of preparing electrode pitches

Details Method of preparing electrode pitches Method of preparing electrode pitches

1974-11-15

1976-07-20

Levine, Herbert

Mineral oils: processes and products

Products and compositions

Asphalts, tars, pitches and resins

208 44, C10C 300

Patent

active

039705420

ABSTRACT:
A method for the preparation of electrode pitch which includes mixing a highly aromatic residual fraction from petroleum raw materials with a coal tar pitch in a weight ratio of from 1:9 to 9:1 and heating the mixture at a temperature of above 350.degree.C. until a pitch is produced with a softening point above 60.degree.C., an insolubility in anthracene oil and toluene is over 30 percent and a coking value of at least 50 corresponding to binder pitch for the production of carbon, graphite electrodes and refractory material.

REFERENCES:
patent: 3080245 (1963-03-01), Barnett et al.
patent: 3173851 (1965-03-01), King et al.
patent: 3374104 (1968-03-01), Baum et al.
patent: 3692663 (1972-09-01), Yeda et al.
patent: 3775289 (1973-11-01), Kishi et al.
patent: 3794579 (1974-02-01), Enomoto et al.

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