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:
Jul. 06, 1976
Filed:
Jan. 06, 1975
Robert L Gorring, Washington Crossing, PA (US);
George F Shipman, Trenton, NJ (US);
Mobil Oil Corporation, New York, NY (US);
Abstract
In the dewaxing of gas oils for the purpose of pour point reduction by catalytic hydrodewaxing using a catalyst comprising a crystalline aluminosilicate zeolite having a high silica to alumina ratio of at least 12 and a constraint index of about 1 to 12, carrying out the process at elevated temperature and pressure, including providing a hydrogen atmosphere in a preferred process configuration, the improvement of using a catalyst comprising said zeolite in microcrystalline from having a maximum crystal size of about 0.05 microns (M); and of operating the process at low pressures of up to about 500 psig, whereby not only is the catalytic activity increased but the catalyst aging rate is decreased and the product distribution is varied such that the process does not consume hydrogen but rather produces hydrogen or is at least neutral in this respect.