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. 11, 2004
Filed:
Jul. 30, 2002
Sebastian C. Reyes, Branchburg, NJ (US);
Krishnan V. Venkatesan, Mt. Laurel, NJ (US);
Gregory J. DeMartin, Flemington, NJ (US);
John H. Sinfelt, Oldwick, NJ (US);
Karl G. Strohmaier, Port Murray, NJ (US);
Jose Guadalupe Santiesteban, Bethlehem, PA (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
The present invention is a process for separating propylene and dimethylether from a mixture comprising propylene, dimethylether, and propane. The mixture is passed through a bed of an adsorbent comprising a porous crystalline material having (i) diffusion time constants for dimethylether and propylene of at least 0.1 sec , and (ii) a diffusion time constant for propane of than 0.02 of the diffusion time constants for dimethylether and propylene. The bed preferentially adsorbs propylene and dimethylether from the mixture. The adsorbed propylene and dimethylether are then desorbed from the bed.