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:
Apr. 24, 1990
Filed:
Dec. 16, 1988
Daigo Shirota, Ichihara, JP;
Masao Omori, Ichihara, JP;
Hiroyasu Yamato, Sodegaura, JP;
Norio Ogata, Sodegaura, JP;
Idemitsu Petrochemical Company Limited, Tokyo, JP;
Abstract
The present invention provides a method of recovering a lithium chloride, which comprises reacting a dihalogenated aromatic compound and an alkali metal sulfide and/or alkali metal hydrogen sulfide in a polar solvent under the pressure of lithium chloride, separating a solvent insoluble component from the resultant reaction mixture to obtain a solution, and calcinating a residue obtained by removing volatile substances from the resultant solution, as well as a method of recovering a lithium chloride, which comprises reacting a dihalogenated aromatic compound and an alkali metal sulfide and/or alkali metal hydrogen sulfide in a polar solvent under the pressure of lithium chloride, separating the granular polymer ingredient from the resultant reaction mixture subjecting the liquid suspension obtained by said separation to solid-liquid separation and calcinating the residue obtained by removing volatile substances from the resultant solution component.