# US 2017/0283731 A1 · Lubricant compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283731 A1 - Document ID: US20170283731A1 - Status: Published application - Kind: A1 - Application number: 15/086,892 - Filed: 2016-03-31 - Published: 2017-10-05 - Earliest claimed: 2016-03-31 - Assignees: ExxonMobil Research and Engineering Company - Applicants: ExxonMobil Research and Engineering Company - Inventors: Jason Z. Gao; Samuel C. Bainbridge; Luca Salvi - Web page: https://patentgrep.com/patent/US20170283731A1 ## CPC - C10M 141/10: at least one of them being an organic phosphorus-containing compound - C10M 139/00: Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00 - C10M 141/12: at least one of them being an organic compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10 - C10M 2207/28: Esters - C10M 2207/2805: used as base material - C10M 2215/223: Five-membered rings containing nitrogen and carbon only - C10M 2219/066: Thiocarbamic type compounds - C10M 2219/106: Thiadiazoles - C10M 2223/045: Metal containing thio derivatives - C10M 2227/061: Esters derived from boron - C10N 2010/12: Groups 6 or 16 - C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure - C10N 2030/12: Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives - C10N 2030/40: {Low content or no content compositions} - C10N 2030/42: {Phosphor free or low phosphor content compositions} - C10N 2030/54: {Fuel economy} - C10N 2040/25: Internal-combustion engines - C10N 2060/14: by boron or a compound containing boron - C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33) - C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS ## Abstract A method for improving corrosion protection and friction coefficient in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil. The formulated oil has a composition comprising a lubricating oil base stock as a major component, and a mixture of (i) at least one organic molybdenum compound, and (ii) at least one borated ester, as a minor component. Corrosion protection and friction coefficient are improved as compared to corrosion protection and friction coefficient achieved using a lubricating oil containing a minor component other than the mixture of (i) at least one organic molybdenum compound, and (ii) at least one borated ester. ## Claims ### Claim 1 (canceled) ### Claim 2 (canceled) ### Claim 3 (canceled) ### Claim 4 (canceled) ### Claim 5 (canceled) ### Claim 6 (canceled) ### Claim 7 (canceled) ### Claim 8 (canceled) ### Claim 9 (canceled) ### Claim 10 (canceled) ### Claim 11 (canceled) ### Claim 12 (canceled) ### Claim 13 A method for improving corrosion protection and friction coefficient in an engine or other mechanical component lubricated with a lubricating oil by using as the lubricating oil a formulated oil, said formulated oil having a composition comprising a lubricating oil base stock as a major component; and a mixture of (i) at least one molybdenum dithiophosphate having a molybdenum to sulfur ratio from 1 to less than 1.1, and (ii) at least one borated ester, as a minor component; wherein corrosion protection and friction coefficient are improved as compared to corrosion protection and friction coefficient achieved using a lubricating oil containing a minor component other than the mixture of (i) at least one molybdenum dithiophosphate having a molybdenum to sulfur ratio from 1 to less than 1.1, and (ii) at least one borated ester. ### Claim 14 (depends on 13) The method of claim 13 in which the formulated oil has at least 500 parts per million of molybdenum. ### Claim 15 (depends on 13) The method of claim 13 in which the formulated oil has a friction coefficient of 0.04 or lower at 140° C., as measured by the Mini Traction Machine (MTM) under a contact pressure of 1.0 GHz. ### Claim 16 (depends on 13) The method of claim 13 in which the formulated oil has at least 500 parts per million of molybdenum, and a copper strip rating of 1A or 1B as measured by ASTM D130 at 150° C. ### Claim 17 (canceled) ### Claim 18 (canceled) ### Claim 19 (canceled) ### Claim 20 A lubricating oil having a composition comprising a lubricating oil base stock as a major component; and a mixture of (i) at least one molybdenum dithiophosphate having a molybdenum to sulfur ratio from 1 to less than 1.1, and (ii) at least one borated ester, as a minor component; wherein corrosion protection and friction coefficient are improved in an engine or other mechanical component lubricated with the lubricating oil, as compared to corrosion protection and friction coefficient achieved using a lubricating oil containing a minor component other than the mixture of (i) at least one molybdenum dithiophosphate having a molybdenum to sulfur ratio from 1 to less than 1.1, and (ii) at least one borated ester.