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:
May. 04, 2021
Filed:
Oct. 11, 2018
Showa Denko K.k., Tokyo, JP;
Katsumi Mikami, Tokyo, JP;
Nozomi Kusumoto, Tokyo, JP;
Shinya Oguro, Tokyo, JP;
Yohsuke Fukuchi, Tokyo, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
There is provided a method of producing 1,2,3,4-tetrachlorobutane capable of stably and economically producing 1,2,3,4-tetrachlorobutane. A reactant solution () containing 3,4-dichloro-1-butene is charged in a reaction vessel () having an inner surface, to be brought into contact with the reactant solution (), made of a metal and a chlorine gas is introduced into the reactant solution () to perform a reaction between 3,4-dichloro-1-butene and the chlorine gas to produce 1,2,3,4-tetrachlorobutane. The reaction is performed while carrying out an operation of taking out at least a portion of the reactant solution () from the reaction vessel (), filtering the reactant solution () thus taken out to remove a solid matter, and returning the filtered reactant solution () into the reaction vessel ().