The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1983
Filed:
Sep. 07, 1982
Applicant:
Inventors:
Jurgen Palm, Oer-Erkenschwick, DE;
Herbert Glaser, Gladbeck, DE;
Gerd Collin, Duisburg, DE;
Rolf Marrett, Castrop-Rauxel, DE;
Maximilian Zander, Castrop-Rauxel, DE;
Assignee:
Rutgerswerke Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C10C / ; C10C / ; D01F / ;
U.S. Cl.
CPC ...
423445 ; 208 22 ; 208 39 ; 208 44 ; 208 45 ; 423448 ; 423449 ; 4234474 ; 4234476 ;
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.