Oxidation resistant pitches

Details Oxidation resistant pitches Oxidation resistant pitches

1983-05-09

1984-09-04

Gantz, Delbert E.

Mineral oils: processes and products

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

208 22, 208 44, 585 3, C10C 100, H01B 104

Patent

active

044695853

ABSTRACT:
A new oxidation-resistant pitch composition is obtained by treating in the molten state a coal tar or petroleum pitch with at least one pitch-soluble and compatible alkyl-aryl sulfonic acid or some salts thereof in an amount of less than 1% of said pitch, with a pitch suitable for making an electrode treated that way, upon subsequent carbonization in conjunction with petroleum coke, an electrode can be formed, with great resistance to oxidation, and with very little dusting. Due to increased coking value of the pitch, the fuming is decreased both during the art of making electrodes and during the use of same in the actual electrolysis thus providing environmental benefits. Such a pitch may also be used as a refractory material.

REFERENCES:
patent: 2093450 (1937-09-01), Jacobsohn
patent: 2465960 (1949-03-01), van den Berge
patent: 2864760 (1958-12-01), Croy
patent: 3275585 (1966-09-01), Baum
patent: 3702832 (1972-11-01), Nikolaerich
patent: 3853773 (1974-12-01), Martin et al.
patent: 4070446 (1978-01-01), Horikiri
patent: 4146576 (1979-03-01), Wyss
patent: 4154807 (1979-05-01), Kishimoto et al.
patent: 4298396 (1981-11-01), Limonchik et al.
patent: 4336022 (1982-06-01), Lynch et al.

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