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. 13, 1984
Filed:
May. 19, 1982
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Sumitomo Metal Industries, Limited, Osaka, JP;
Abstract
The present invention relates to a process for preparing raw material containing small amount of quinoline-insoluble component for producing carbon material, comprising the steps of admixing a heavy oil of coal origin or of petroleum origin with an organic solvent having a boiling point of lower than 150.degree. C. and a surfactant which is soluble in the heavy oil and has de-foaming property and de-bubbling property, stirring the thus formed mixture gently with a motive power in a range of 0.5 to 50 watt/m.sup.3 of the mixture, subjecting the mixture to centrifugation thereby removing the solid impurities, and distilling the remaining liquid thereby removing the light fraction to obtain the raw material.