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. 10, 1989
Filed:
Aug. 20, 1987
Applicant:
Inventor:
Emmerson Bowes, East Amwell, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208111 ; 208 18 ; 208 89 ; 208120 ;
Abstract
A catalytic dewaxing process in which a waxy hydrocarbon feed is dewaxed over binder-free zeolite dewaxing catalyst. The absence of binder reduces catalyst aging especially when operating at controlled space velocities in the range of 0.25 to 1.5 LHSV. The process is especially useful with lube oil stocks where aging problems are particularly severe, typically highly waxy stocks or stocks containing high levels of nitrogen. Preferred catalysts are the intermediate pore size zeolites such as ZSM-5, ZSM-11 and ZSM-23.