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:
Oct. 09, 1990
Filed:
Feb. 21, 1989
Toray Industries, , JP;
Abstract
By a process for preparing halogenated benzene derivatives comprising distilling or stripping a mixture of the isomers of a halogenated benzene derivative containing a hydrogen halide to remove the hydrogen halide from the isomeric mixture of the halogenated benzene derivative and then contacting with a zeolite adsorbent for selectivity separating the desired isomer of the halogenated benzene derivative, it is possible to prevent from degrading the zeolite adsorbent. And it is possible to separate selectively industrially an desired isomer of the halogenated benzene derivative for a long time without reduction of productivity and to separate selectively the desired isomer in high purity.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile