Patent · US Expired

Method of producing a highly reactive pitch fraction and its usage

US4414192A · kind A · utility

3Cited by

4References

4Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Jurgen Palm · Johannesweg, DE
Herbert Glaser · Gladbeck, DE
Gerd Collin · Duisburg, DE
Rolf Marrett · Castrop-Rauxel, DE
Maximilian Zander · Castrop-Rauxel, DE

Key dates

Filing date	Sep 7, 1982
Grant date	Nov 8, 1983
Priority date	—
Expiry date	Sep 7, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10B55/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of producing a highly reactive pitch fraction is disclosed. Coal-tar pitch is extracted with hot chloroform and the pitch solution treated with solid iodine. The solid reaction products are separated and, in the presence of chloroform, decomposed with an aqueous ammonia solution. Following separation of the aqueous phase and removal by distillation of the chloroform, there remains a highly reactive pitch fraction which can be converted into high-anisotropic carbon at low temperatures and in short coking times.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.