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. 07, 1985
Filed:
Sep. 08, 1982
Ian A Cody, Baton Rouge, LA (US);
Exxon Research & Engineering Co., Florham Park, NJ (US);
Abstract
It has been discovered that the pour point and wax content of waxy hydrocarbon oils, either natural or derived from synthetic sources such as tar sands, shale oil, etc., preferably natural waxy petroleum oils, most preferably waxy lube, transformer, specialty oils and waxy fuels such as kerosene or jet fuel, can be effectively reduced under standard catalytic dewaxing conditions using an aluminosilicate catalyst with very low crystallinity (VLC), as measured by x-ray diffraction. These VLC materials are derived from crystalline aluminosilicate zeolites which will not themselves reduce the pour point and wax content of waxy oils by the thermal decomposition of said zeolites following their exchange with cations which yield hydroxyl groups during the thermal decomposition step.