润滑科技信息平台

专利摘要

本发明提供一种润滑油组合物,其包含具有润滑粘度的基础油,其中所述基础油包含式(A)的醚类基础油,其中: Ra和Rb为脂肪族烃基,可以相同或不同; 润滑剂组合物还包含至少一种胺类抗氧化剂和至少一种酚类抗氧化剂。在一些实施方案中,醚基础油具有式(1),其中:R1、R2、R3、R4、R5和R6如本文所定义。润滑剂组合物可用于润滑内燃机的表面以及用于改善发动机和/或车辆(例如与内燃机相关的机动车辆)的燃料经济性能和/或活塞清洁性能 . ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2022162329
申请日期:
2017-12-14
专利申请人:
分类号:
C10M169/04
发明/设计人:
BREAKSPEAR, ANGELA ， LAMB, GORDON DAVID ， REDSHAW, JOHN MICHAEL ， WEST, KEVIN RICHARD ， YATES, REBECCA
权利要求: 1. A lubricant composition comprising a base oil of lubricating viscosity, wherein the base oil comprises an ether base stock of formula (1): where: R1 and R2 are alkyl or, together with the carbon atom to which they are attached, cycloalkyl; R3 and R5 are H or alkyl, and R4 is alkyl; R6 is alkyl; and m and n are 0, 1, 2 or 3 the lubricant composition further comprising at least one aminic anti-oxidant and at least one phenolic anti-oxidant.2. The lubricant composition of Claim 1, wherein R1 and R2 are C1-15 alkyl or, together with the carbon atom to which they are attached, C5-30 cycloalkyl, such as C2-12 alkyl or, together with the carbon atom to which they are attached, C5-25 cycloalkyl; and/or wherein R4 is C1-15 alkyl, such as C2-12 alkyl; and/or wherein R3 and R5 are H or C1-15 alkyl, such as H or C2-12 alkyl, preferably wherein R5 is H.3. The lubricant composition of Claim 1 or Claim 2, wherein m and n are 0, 1 or 2, such as 0 or 1.4. The lubricant composition of any of Claims 1 to 3, wherein the ether base stock has the formula (2): where: R1 and R2 are alkyl, or together with the carbon atom to which they are attached, cycloalkyl; R3 and R5 are H or alkyl; R4 is alkyl; R6 is alkyl; and n is 0, 1, 2 or 3.5. The lubricant composition of Claim 4, wherein R1 and R2 are C1-15 alkyl or, together with the carbon atom to which they are attached, C5-30 cycloalkyl, such as C2-12 alkyl or, together with the carbon atom to which they are attached, C5-25 cycloalkyl; and/or R1 and R2 are C1-15 alkyl, such as C2-12 alkyl; and/or R3 and R5 are H or C1-15 alkyl, preferably, R3 and R5 are H; and/or R4 is C1-15 alkyl, such as C2-12 alkyl; and/or n is 0, 1, or 2, such as 0 or 1.6. The lubricant composition of any of Claims 1 to 5, wherein the ether base stock contains a total number of carbons atoms of from 20 to 50, such as from 25 to 45, such as from 28 to 40 or from 28 to 36.7. The lubricant composition of any of Claims 1 to 6, wherein the base oil of the lubricant composition comprises greater than 25 %, or greater than 40 % by weight of the ether base stock and/or wherein the lubricant composition comprises greater than 65 %, or greater than 80 % by weight of the base oil.8. The lubricant composition of any of Claims 1 to 7, wherein the lubricant composition has at least one of: a kinematic viscosity at 40 °C of less than 60 cSt, such as less than 55 cSt, or less than 50 cSt; a kinematic viscosity at 100 °C of less than 12 cSt, such as less than 10 cSt, or less than 9.5 cSt; a viscosity index of greater than 100, such as greater than 110, or greater than 120; a viscosity at 150 °C and a shear rate of 106 s-1 of no greater than 3 cP, such as no greater than 2.8 cP; and a Noack volatility of less than 25 %, such as no more than 20%, less than 15 %, or less than 10 % by weight; and/or wherein the lubricant composition has at least one of: an oxidative stability performance on a CEC-L-088-02 test indicated by an absolute viscosity increase at 40 °C of no more than 45 cSt, such as no more than 35 cSt or no more than 25 cSt; an oxidative stability performance on a CEC-L-109-14 test indicated by an increase in kinematic viscosity at 100 °C of less than 200 %, preferably less than 150 %, at 216 hours and/or an increase in kinematic viscosity at 100 °C of less than 200%, preferably less than 150 %, at 168 hours; a fuel economy performance on a CEC-L-054-96 test of at least 2.5 %, such as at least 3 %; and a piston cleanliness performance on a CEC-L-088-02 test indicated by an overall piston merit of at least 8.5, such as 9.9. The lubricant composition of any of Claims 1 to 8, wherein the weight ratio of aminic anti-oxidant to phenolic anti-oxidant in the lubricant composition is from 4 : 1 to 1 :4, preferably from 3 : 1 to 1 : 3, more preferably from 2 : 1 to 1 : 2.10. The lubricant composition of any of Claims 1 to 9, wherein the total combined amount of aminic and phenolic anti-oxidant in the lubricant composition is not more than 4.0%, not more than 3.0 %, not more than 2.5 %, or not more than 2.0 %, by weight of the lubricant composition; and/or wherein the total combined amount of aminic and phenolic anti-oxidant in the lubricant composition is at least 0.25 %, at least 0.5 %, or at least 0.75 %, by weight of the lubricant composition; and/or wherein the total amount of non-aminic and non-phenolic antioxidant in the lubricant composition is not more than 1.0 %, not more than 0.75 %, or not more than 0. 5 %, by weight of the lubricant composition.11. The lubricant composition of any of Claims 1 to 10, wherein the at least one phenolic anti-oxidant is selected from alkylated mono-phenols, alkylated hydroquinones, hydroxylated thiodiphenyl ethers, alkylidenebisphenols, acylaminophenols, and sulphurised alkyl phenols and alkali and alkaline earth metal salts thereof; and optionally the at least one aminic anti-oxidant is selected from alkylated and non-alkylated aromatic amines, alkylated diphenylamines, N-alkylated phenylenediamines, phenyl-α-naphthylamine, and alkylated phenyl-α-naphthylamines.12. Use of a lubricant composition according to any of Claims 1 to 11 for lubricating a surface, such as wherein the lubricant composition is used for lubricating a surface in an internal combustion engine.13. Use of an ether base stock as defined in any of Claims 1 to 11, for reducing the amount of anti-oxidant required in a lubricant composition, the lubricant composition comprising at least one aminic anti-oxidant and/or at least one phenolic anti-oxidant, in order for the lubricant composition to achieve a particular level of oxidative stability performance.14. Use of a lubricant composition according to any of claims 1 to 11 to improve the fuel economy performance and/or piston cleanliness performance of an engine and/or a vehicle, such as an automotive vehicle associated with an internal combustion engine.