# US 10,119,091 B2 · Anti-corrosion additives > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,091 B2 - Document ID: US10119091B2 - Status: Granted - Kind: B2 - Application number: 15/306,654 - Filed: 2015-04-28 - Published: 2017-08-24 - Granted: 2018-11-06 - Earliest claimed: 2014-05-06 - Assignees: The Lubrizol Corporation - Applicants: The Lubrizol Corporation - Inventors: Daniel J. Saccomando; Ewan E. Delbridge; William R. S. Barton - Web page: https://patentgrep.com/patent/US10119091B2 ## CPC - C10M 133/06: having amino groups bound to acyclic or cycloaliphatic carbon atoms - C10M 141/08: at least one of them being an organic sulfur-, selenium- or tellurium-containing compound - C10M 141/10: at least one of them being an organic phosphorus-containing compound - C10M 2215/04: having amino groups bound to acyclic or cycloaliphatic carbon atoms - C10M 2219/022: of hydrocarbons, e.g. olefines - C10M 2219/106: Thiadiazoles - C10M 2223/04: Phosphate esters - C10M 2223/043: Ammonium or amine salts thereof - C10M 2223/047: Thioderivatives not containing metallic elements - C10N 2030/04: Detergent property or dispersant property - C10N 2030/06: Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure - C10N 2030/10: Inhibition of oxidation, e.g. anti-oxidants - C10N 2030/12: Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives - C10N 2040/04: Oil-bath; Gear-boxes; Automatic transmissions; Traction drives - C10N 2040/042: {for automatic transmissions} - C10N 2040/044: {for manual transmissions} - 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 lubricant composition comprising an oil of lubricating viscosity and an N-hydrocarbyl-substituted aminoester, wherein the N-hydrocarbyl substituent comprises a hydrocarbyl group of at least 3 carbons atoms, with a branch at the 1 or 2 position of the hydrocarbyl chain, provides good iron and copper corrosion performance in driveline or gear applications. ## Claims ### Claim 1 A lubricant composition comprising: (a) an oil of lubricating viscosity; (b) an N-hydrocarbyl-substituted aminoester represented by the formula wherein R2 and R3 are independently alkyl groups of 1 to about 6 carbon atoms and R4 and R7 are independently alkyl groups of 1 to about 12 carbon atoms; and (c) about 0.05 to about 8 percent by weight of a substituted thiadiazole or about 0.04 to about 4 percent by weight of an amine (thio)phosphate. ### Claim 2 (depends on 1) The lubricant composition of claim 1 further comprising at least one of extreme pressure agents, detergents, dispersants, antioxidants, corrosion inhibitors, and antiwear agents. ### Claim 3 (depends on 1) The lubricant composition of claim 1 wherein the N-hydrocarbyl-substituted aminoester is present in an amount of about 0.1 to about 5 percent by weight. ### Claim 4 (depends on 1) The lubricant composition of claim 1 wherein the lubricant composition comprises a substituted thiadiazole. ### Claim 5 (depends on 1) The lubricant composition of claim 1 wherein the lubricant composition comprises an amine (thio)phosphate. ### Claim 6 (depends on 1) A method for lubricating a gear or a driveline device, comprising supplying thereto the lubricant composition of claim 1. ### Claim 7 (depends on 6) The method of claim 6 wherein the gear or driveline device comprises a gear, an axle, a manual transmission, an automatic transmission, or a farm tractor. ### Claim 8 A lubricant composition comprising: (a) an oil of lubricating viscosity; (b) an N-hydrocarbyl-substituted aminoester is represented by the formula wherein m is 0 or 1, R1 is hydrogen or a hydrocarbyl group, R2 and R3 are independently hydrocarbyl groups or together form a carbocyclic structure, R4 is an ether-containing group or a polyether-containing group, having 2 to about 120 carbon atoms, and R5 is hydrogen, a hydrocarbyl group, or a group represented by —C(═O)—R6 where R6 is hydrogen, an alkyl group, or —O—R7, where R7 is a hydrocarbyl group of 1 to about 30 carbon atoms, provided that if R4 is methyl, then m is 0, and further provided that if m is 0, R1 is hydrogen; and (c) about 0.05 to about 8 percent by weight of a substituted thiadiazole or about 0.04 to about 4 percent by weight of an amine (thio)phosphate. ### Claim 9 (depends on 8) The lubricant composition of claim 8 wherein R4 is represented by wherein R6 is a hydrocarbyl group of 1 to about 30 carbon atoms; R11 is H or a hydrocarbyl group of 1 to about 10 carbon atoms; R12 is a straight or branched chain hydrocarbylene group of 1 to 6 carbon atoms; Y is —H, —OH, —R6OH, NR9R10, or —R6NR9R10, where R9 and R10 are each independently H or a hydrocarbyl group of 1 to 50 carbon atoms, and m is an integer from 2 to 50. ### Claim 10 (depends on 8) The lubricant composition of claim 8 further comprising at least one of extreme pressure agents, detergents, dispersants, antioxidants, corrosion inhibitors, and antiwear agents. ### Claim 11 (depends on 8) The lubricant composition of claim 8 wherein the N-hydrocarbyl-substituted aminoester is present in an amount of about 0.1 to about 5 percent by weight. ### Claim 12 (depends on 8) The lubricant composition of claim 8 wherein the lubricant composition comprises a substituted thiadiazole. ### Claim 13 (depends on 8) The lubricant composition of claim 8 wherein the lubricant composition comprises an amine (thio)phosphate. ### Claim 14 A lubricant composition comprising: (a) an oil of lubricating viscosity; (b) an N-hydrocarbyl-substituted aminoester is represented by the formula wherein m is 0 or 1, R1 is hydrogen or a hydrocarbyl group, R2 and R3 are independently hydrocarbyl groups or together form a carbocyclic structure, R4 is a hydroxy-containing or a polyhydroxy-containing alkyl group of 2 to about 12 carbon atoms, at least one hydroxy group being optionally reacted to form an ester or a thioester, and R5 is hydrogen, a hydrocarbyl group, or a group represented by —C(═O)—R6 where R6 is hydrogen, an alkyl group, or —O—R7, where R7 is a hydrocarbyl group of 1 to about 30 carbon atoms, provided that if R4 is methyl, then m is 0, and further provided that if m is 0, R1 is hydrogen; and (c) about 0.05 to about 8 percent by weight of a substituted thiadiazole or about 0.04 to about 4 percent by weight of an amine (thio)phosphate. ### Claim 15 (depends on 14) The lubricant composition of claim 14, further comprising at least one of extreme pressure agents, detergents, dispersants, antioxidants, corrosion inhibitors, and antiwear agents. ### Claim 16 (depends on 14) The lubricant composition of claim 14, wherein the N-hydrocarbyl-substituted aminoester is present in an amount of about 0.1 to about 5 percent by weight. ### Claim 17 (depends on 14) The lubricant composition of claim 14, wherein the lubricant composition comprises a substituted thiadiazole. ### Claim 18 (depends on 14) The lubricant composition of claim 14, wherein the lubricant composition comprises an amine (thio)phosphate. ### Claim 19 A lubricant composition comprising: (a) an oil of lubricating viscosity; (b) an N-hydrocarbyl-substituted aminoester represented by formula wherein, R is a hydrocarbyl group having from 1 to 30 carbon atoms; R6 is —O—R7, where IC is a hydrocarbyl or hydrocarbon group having from 1 to 30 carbon atoms; R4 is a hydrocarbyl or hydrocarbon group having from 1 to 30 carbon atoms, and (c) about 0.05 to about 8 percent by weight of a substituted thiadiazole or about 0.04 to about 4 percent by weight of an amine (thio)phosphate. ### Claim 20 (depends on 19) The lubricant composition of claim 19, further comprising at least one of extreme pressure agents, detergents, dispersants, antioxidants, corrosion inhibitors, and antiwear agents. ### Claim 21 (depends on 19) The lubricant composition of claim 19, wherein the N-hydrocarbyl-substituted aminoester is present in an amount of about 0.1 to about 5 percent by weight. ### Claim 22 (depends on 19) The lubricant composition of claim 19, wherein the lubricant composition comprises a substituted thiadiazole. ### Claim 23 (depends on 19) The lubricant composition of claim 19, wherein the lubricant composition comprises an amine (thio)phosphate.