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:
Aug. 15, 1995
Filed:
Jan. 10, 1994
Applicant:
Inventor:
John D-Y. Ou, Houston, TX (US);
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
528482 ; 585820 ; 585829 ;
Abstract
The present invention is directed to adsorbing polymeric hydrocarbons (ie. polymers of iso-butylene, polymers of the isomers of iso-butylene (poly-butenes) and co-polymers of iso-butylene and other olefins (butyl rubber) from hydrocarbon or raffinate streams using activated carbon as the adsorbent. One embodiment includes the selective removal of poly-isobutylene (PIB) from a hydrocarbon stream by activated carbon. The stream which can exceed 100 ppm PIB is contacted with the activated carbon for a sufficient time to reduce the PIB content of the hydrocarbon stream to less than about 1 ppm.