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:
Nov. 08, 2016
Filed:
Nov. 03, 2015
Chevron Oronite Company Llc, San Ramon, CA (US);
William Raymond Ruhe, Jr., Benicia, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Abstract
A method for is disclosed for improving diesel engine wear by lubricating the engine with a composition comprising an oil of lubricating viscosity and based upon the total composition of the lubricating oil composition from about 0.1 to about 2.0 weight % actives of a reaction product of an ethylene-alpha olefin copolymer acylated with maleic anhydride having a number average molecular weight from 5,000 to 120,000 and a hydrocarbyl-substituted poly(oxyalkylene) monoamine represented by the formula: R—(OCHCH)—(OCHCHR)—NHRwherein Ra hydrocarbyl group having from about 1 to about 35 carbon atoms; Ris independently hydrogen or methyl for each repeat unit g; Ris hydrogen or alkyl from 1 to 10 carbon atoms; and f and g are integers such that f+g is from 2 to 45 and wherein Ris selected to have a plurality of ethylene oxide in the polyoxyalkylene moiety.