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:
Apr. 24, 1984
Filed:
Mar. 08, 1982
Theodore H West, Sarnia, CA;
Exxon Research and Engineering Co., Florham Park, NJ (US);
Abstract
A process is disclosed for the solvent dewaxing of wax containing hydrocarbon oils, preferably waxy petroleum oils most preferably waxy lubricating or transformer oils. The process employs methyl tertiary butyl ether as the dewaxing solvent, either alone or in combination with other dewaxing solvents such as ketones, halogenated hydrocarbon anti-solvents, and mixtures thereof. The use of methyl tertiary butyl ether as a dewaxing solvent, or in combination with conventional dewaxing anti-solvents permits lower volumes of solvent to be employed in the dewaxing process while simultaneously producing an oil of lower wax content and lower dewaxed oil pour point at the same filter temperature as that commonly employed using conventional dewaxing solvents. Dewaxed oil yields for equivalent pour point are 3 to 4% higher with the MTBE system.