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:
Dec. 13, 1977
Filed:
Dec. 16, 1976
Applicant:
Inventors:
Vance P Burton, Arlington Heights, IL (US);
Michael Z Mikulicz, Palatine, IL (US);
Assignee:
VOP Inc., Des Plaines, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C07C / ;
U.S. Cl.
CPC ...
252414 ; 2606 / ;
Abstract
Solid catalysts including solid phosphoric acid catalysts are regenerated in-situ in a multi-step method. A sequence which includes depressurization, soaking in an aromatic hydrocarbon-containing liquid at a high temperature and pressure, depressurization and draining is repeated three times. The regeneration removes polymers formed from olefinic reactants.