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:
Jun. 02, 1992
Filed:
Jan. 18, 1989
Hermann A Zinnen, Des Plaines, IL (US);
Kelly C Issa, Champaign, IL (US);
Other;
Abstract
A process for the separation of 2,4 DCP from a hydrocarbon feed mixture comprising 2,4 and 2,6 DCP which process employs an adsorbent comprising a type X or type L zeolite which has been cation exchanged at appropriate conditions with one or more cations selected from the group consisting of alkaline metals, alkaline earths and Group VIII elements of the Periodic Table. The adsorbed DCP isomer(s) thereafter is removed from the adsorbent by contacting it with a desorbent material and is recovered to an extract product stream, likewise the remainder of the feed material is recovered to a raffinate product stream. In a preferred embodiment the process uses a simulated moving-bed countercurrent flow system.