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

热稳定、低牵引系数润滑剂

专利摘要

所公开的技术涉及用于传动系统和工业齿轮的润滑剂,其包含粘度调节剂和任选酯的组合,以及用这种润滑剂润滑传动系统和工业齿轮的方法。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2022710876
申请日期:
2022-02-28
专利申请人:
分类号:
C10M169/04; C10N20/04; C10N30/02; C10N30/06; C10N30/10; C10N30/00; C10N40/02; C10N40/04
发明/设计人:
STANDEN, PATRICIA ， BARTON, WILLIAM R.S. ， CORRIGAN, THOMAS S. ， SIVAKOVA, SONA
权利要求: What is claimed is:1) A lubricant composition comprising: a) a hydrocarbon lubricating base stock, b) a viscosity modifier composition comprising a ratio of between 90/10 to 40/60 wt% of polymer i)/ii) of: i) at least one olefin copolymer having a number average molecular weight (“Mn”) as measured by Gel Permeation Chromatography ("GPC") with a polystyrene standard of about 1000 to about 10,000, ii) at least one grafted olefin copolymer having an Mn as measured by GPC with a polystyrene standard of about 1000 to about 10,000, comprising car boxylic acid functionality or a reactive equivalent thereof grafted onto the polymer backbone, wherein the carboxylic acid functionality or reactive equivalent thereof is further substituted with an amine.2) The lubricant composition of claim 1 wherein the copolymer of b)i) comprises an ethylene/propylene copolymer.3) The lubricant composition of any previous claim wherein the copolymer of b)i) com prises 15 to 80 mole % ethylene, and 20 to 85 mole % propylene or higher monoolefin or comprises 30 to 80 mole % ethylene and 20 to 70 mole % of at least one C3to C10alpha monoolefm or comprises 40 to 80 mole % ethylene and 20 to 60 mole % propyl ene or comprises 15 to 80 mole % propylene and 20 to 85 mole % ethylene or higher monoolefm.4) The lubricant composition of any previous claim wherein the grafted copolymer of b)ii) comprises an ethylene/propylene copolymer backbone with grafted succinic an hydride functionality.5) The lubricant composition of claim 3 wherein the succinic anhydride functionality is substituted with a primary amine.6) The lubricant composition of claim 3 wherein the succinic anhydride functionality is substituted with an aliphatic amine, heterocyclic amine, aromatic amine, or mixtures thereof.7) The lubricant composition of any previous claim, wherein the grafted olefin polymer is reacted with aminopropylmorpholine.8) The lubricant composition of any previous claim, wherein the grafted olefin polymer is reacted with dimethylaminopropylamine.9) The lubricant composition of any previous claim comprising c) a carboxylic acid ester.10) The lubricant composition of claim 9 wherein the carboxylic acid ester comprises c)i) a carboxylic acid mono-ester, c)ii) a dicarboxylic acid di-ester, and c)iii) mixtures thereof.11) The lubricant composition of claim 10, comprising from about 1 to about 15 wt.% of a carboxylic acid monoester.12) The lubricant composition of claim 10, wherein the carboxylic acid mono-ester of c)i) comprises a Cs to Ci8 or C4 to C14 or Cs to C14 or C10 to C14 or Cn to C13 linear or branched carboxylic acid.13) The lubricant composition of claim 10, wherein the carboxylic acid mono-ester comprises a C6or Cs to C12 linear or branched alkoxy group.14) The lubricant composition of claim 10, wherein the carboxylic acid mono-ester comprises a lauric acid mono-ester, tallow acid mono-ester, oleic acid mono-ester, palmitic acid mono ester, and combinations thereof.15) The lubricant composition of claim 10, wherein the carboxylic acid mono-ester comprises a 2-ethylhexyl alkoxy group.16) The lubricant composition of claim 10, wherein the carboxylic acid mono-ester comprises at least one of 2-ethylhexyl tallate, 2-ethylhexyl oleate, 2-ethylhexyl laurate, 2-ethylhexyl palmitate, and combinations thereof.17) The lubricant composition of claim 10, comprising from about 1 to about 15 wt.% of the dicarboxylic acid di-ester.18) The lubricant composition of claim 10, wherein the dicarboxylic acid di-ester comprises a C3 to C12, or a C4 to Cn, or a C5 to C10, or C6to C9 linear or branched dicarboxylic acid.19) The lubricant of claim 10, where the dicarboxylic acid di-ester comprises adipic acid diester, azelaic acid diester, and combinations thereof.20) The lubricant composition of claim 10, wherein the dicarboxylic acid di-ester comprises at least one of di-2-ethylhexyl azelate, diisotridecyl adipate, diisooctyl adipate, di-C6-io- azelate, di- C6-io-adipate, di-Cs- azelate, di-Cs adipate and combi nations thereof.21) A method for lubricating a driveline system by supplying thereto the lubricant composition of any of claims 1 through 20.22) A method for lubricating a gear by supplying thereto the lubricant composition of any of claims 1 through 20.23) The method of claim 22 wherein the gear comprises bearings.24) The method of claim 22wherein the gear comprises hypoid gears.25) The method of claim 22 wherein the gear comprises industrial gears.