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:
Jan. 02, 1990
Filed:
Jan. 29, 1986
Ramah J Brod, Marcham, Nr. Abingdon, GB;
Robert D Tack, Oxford, GB;
Kenneth Lewtas, Wantage, GB;
Robert L Elliott, Baton Rouge, LA (US);
Exxon Chemical Patents Inc., Linden, NJ (US);
Abstract
The invention concerns a lubricating oil containing less than 3 wt. % of a mixture of (1) a lubricating oil pour depressant and (2) a polyoxyalkylene ester, ether, ester/ether or mixture thereof containing one or more C.sub.10 to C.sub.30 alkyl groups and polyoxyalkylene glycol group of molecular weight 100 to 5000, the alkylene group of said polyoxyalkylene glycol containing from 1 to 4 carbon atoms. The pour depressant can for example be a vinyl acetate copolymer, a polyalkylacrylate, a polyalkylmethacrylate or an esterified olefin/maleic anhydride copolymer.