润滑科技信息平台

机械工程学会摩擦学分会固体润滑国家重点实验室摩擦学学报

电动车用润滑油添加剂组合物

专利摘要

公开的技术涉及一种润滑油添加剂,其含有分散剂、腐蚀抑制剂、磷抗磨剂、抗氧化剂和无硫清净剂。所公开的技术还涉及包含该润滑添加剂的润滑组合物,其中该润滑组合物用于润滑电动车辆的变速器,特别是用于变速箱中。 ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/US2024/021894
申请日期:
2024-03-28
专利申请人:
路博润公司
分类号:
["C10M141/10","C10N20/04","C10N30/06","C10N30/12","C10N30/00","C10N40/02","C10N40/04","C10N40/16","C10N40/25"]
发明/设计人:
GAHAGAN, MICHAEL P. ， JEFFREYS, STEPHEN
权利要求: What is claimed is:1. A lubricant composition comprising:(a) an oil of lubricating viscosity;(b) a dispersant;(c) a triazole corrosion inhibitor;(d) a phosphorous containing antiwear compound;(e) an antioxidant; and(f) a sulfur-free detergent; wherein the lubricant composition contains no more than 40 ppm sulfur, or no more than 30 ppm sulfur, or no more than 20 ppm sulfur.2. The lubricant composition of claim 1, wherein the sulfur-free detergent comprises or consists of a salicylate detergent.3. The lubricant composition of any preceding claim, wherein the sulfur-free detergent comprises or consists of calcium salicylate.4. The lubricant composition of claim 3, wherein the calcium salicylate detergent is present in an amount sufficient to deliver up to 2000 ppm, or 100 ppm to 1000 ppm, or 100 ppm to 600 ppm, or 100 ppm to 250 ppm, or 400 ppm to 750 ppm of calcium to the lubricant composition.5. The lubricant composition of any preceding claim, wherein the phosphorous antiwear compound comprises a dialkylphosphite.6. The lubricant additive composition of claim 5, wherein the di-alkylphosphite has the formula:wherein R3 and R4 are independently alkyl groups with 1 to 24 carbon atoms.7. The lubricant composition of claims 5, wherein the dialkyl phosphite comprises or consists of dibutyl hydrogen phosphite.8. The lubricant composition of any of claims 1 to 4, wherein the phosphorous containing antiwear compound comprises or consists of a phosphonate ester.9. The lubricant composition of claim 8, wherein the phosphonate ester comprises the reaction product of(a) a monomeric phosphorous acid or an ester thereof with(b) at least two alkylene diols: a first alkylene diol (i) having two hydroxy groups in a 1, 4 or 1, 5 or 1, 6 relationship; a second alkylene diol (ii) being an alkyl-substituted 1, 3-propylene diol with one or more of the alkyl substituents thereof being on one or more of the carbon atoms of the propylene unit, the total number of carbon atoms in the alkyl-substituted 1, 3-propylene diol being about 5 to about 12; wherein the relative molar amounts of monomeric phosphorous acid or ester thereof (a) and the total of the alkylene diols (b) are in a ratio of about 0.9: 1.1 to about 1.1 :0.9; and wherein the relative molar amounts of the first alkylene diol (i) and the alkyl-substituted 1, 3-propylene diol (ii) are in a ratio of about 30:70 to about 65:35.10. The lubricant composition of any preceding claim, wherein the dispersant comprises or consists of a succinimide dispersant.11. The lubricant composition of claim 10, wherein the dispersant comprises or consist of succinimide dispersant having a number average molecular weight of 750 to 2200 or 750 to 1600 or 950 to 1550.12. The lubricant composition of any of claims 1 to 9, wherein the dispersant comprises or consist of an olefin polymer dispersant.13. The lubricant composition of claim 12, wherein the dispersant comprises or consists of an ethylene/propylene copolymer dispersant.14. The lubricant composition of any preceding claim, wherein the dispersant comprises a borated dispersant.15. The lubricant composition of any preceding claim, wherein the dispersant comprises a non-borated dispersant.16. The lubricant composition of any preceding claim, wherein the triazole corrosion inhibitor comprises or consist of 1,2,4-triazole.17. The lubricant composition of any preceding claim, wherein the triazole corrosion inhibitor comprises or consist of N,N-Bis(2-ethylhexyl)-[(l,2,4- triazol-l-yl)methyl]amine.18. The lubricant composition of any of claims 1 to 15, wherein the triazole corrosion inhibitor comprises or consists of a tolutriazole derivative.19. The lubricant composition of any of claims 1 to 15, wherein the triazole corrosion inhibitor comprises or consists of bis(2-ethylhexyl)-[(l,2,4-triazol- 1 -yl)methyl]amine.20. The lubricant composition of any preceding claim, wherein the antioxidant comprises or consists of an aryl amine antioxidant.21. The lubricant composition of any preceding claim, wherein the antioxidant comprises or consists of a phenyl-a-naphthylamine (PANA).22. The lubricant composition of any preceding claim, wherein the antioxidant comprises or consists of a hydrocarbyl substituted diphenylamine.23. The lubricant composition of any preceding claim, wherein the antioxidant is selected from the group consisting of octyl diphenylamine, or di-octyl diphenylamine, dinonyl diphenylamine or mixtures thereof.24. The lubricant composition of any preceding claim, wherein the lubricant composition comprises,0.5 wt% to 5 wt% or 1.0 wt% to 3 wt% or 0.2. wt% to 3 wt% or 1 to 2 wt% of the dispersant;0.01 wt% to 0.11 wt% of the triazole corrosion inhibitor;0.05 wt% to 2 wt% or 0.05 to 1 wt% or 0.1 wt % to 0.5 wt% or 1.0 to 2 wt% of the phosphorous antiwear compound;0.2 wt% to 1.2 wt% or 0.2 wt % to 1.0 wt %, or 0.2 wt % to 0.7 wt % or 0.2 wt % to 0.4 wt % of the antioxidant; and0.1 wt% to 1.0 wt% or 0.2 wt% to 0.8wt% or 0.2 wt % to 0.5 wt % of the sulfur-free detergent.25. The lubricant composition of any preceding claim, wherein the lubricant composition is substantially free of borate esters.26. The lubricant composition of any preceding claim wherein the oil of lubricating viscosity is selected from the group consisting of API Group III base oil, Group IV base oil, or mixtures thereof.27. The lubricant composition of any preceding claim, wherein the viscosity of the lubricant composition is from 1 cSt to 32 cSt, or 1.5 cSt to 15 cSt, or 2 to 12 cSt at 100°C as measured by ASTM D445.28. The lubricant composition of any preceding claim, wherein the oil of lubricating viscosity comprises or consists of an API Group III base oil.29. The lubricant composition of any preceding claim, wherein the oil of lubricating viscosity comprises or consists of an API Group IV base oil.30. The lubricating composition of any preceding claim, wherein the phosphorous antiwear agent is present in an amount sufficient to deliver to the composition 100 to 5000 parts per million phosphorus to the composition.31. A method of lubricating an electric vehicle comprising supplying to a driveline of the electric vehicle the lubricant composition of any of any preceding claim and operating the driveline.32. A method of reducing wear in an electric vehicle driveline by supplying to the driveline the lubricant composition of any of claims 1 to 30.33. The use of a lubricating composition as recited in any of claims 1 to 30 to reduce wear in an electric vehicle driveline.