润滑科技信息平台

专利摘要

所公开的技术涉及用于压燃式内燃机的润滑剂,特别是表现出改进的密封性能、减少的沉积物形成和优异的耐久性中的至少一种的那些。本发明提供了一种低锌润滑组合物,其包含(a)润滑粘度的油、(b)硼酸化分散剂和(c)不含金属的有机磷抗磨添加剂,其中该润滑组合物基本上不含含硫金属偶合烷基酚化合物。此外,低锌润滑组合物含有按组合物重量计小于600ppm的量的锌。 ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/US2023/025851
申请日期:
2023-06-21
专利申请人:
路博润公司
分类号:
["C10M135/36","C10N10/04","C10N10/08","C10N10/10","C10N10/12","C10N30/00","C10N40/02","C10N40/04","C10N60/14","C10N10/02","C10N30/04","C10N30/10","C10N40/25"]
发明/设计人:
BARTON, WILLIAM R.S. ， MYERSON, RICHARD J. ， CAPITOSTI, SCOTT ， SACCOMANDO, DANIEL J. ， RODGERS, ZACHERY L. ， ROBIN, MATHEW PHILIP ， MCGUINESS, MARK J.
权利要求: What is claimed:1. A composition for lubricating an internal combustion engine comprising: an oil of lubricating viscosity; and a DMTD derivative comprising the reaction product of 2,5-dimercapto-l,3,4-thiadiazole (“DMTD”) and an a. P-unsatu rated carbonyl compound.2. The composition of claim 1, wherein the a, P-unsaturated carbonyl compound comprises an ester, amide, or imide.3. The composition of claim 2, wherein the a, -unsaturated carbonyl compound is an ester selected from the group consisting of maleates, acrylates, methacrylates, fumarates, crotonates, itaconates, and mixtures thereof.4. The composition of claim 3, wherein the a, p-unsaturated ester contains 4 to 24, or 4 to 18, or 4 to 12, or 6 to 8 carbon atoms.5. The composition of claim 3 or 4, wherein the a, P-unsaturated ester comprises or consists of an alkyl acrylate.6. The composition of claim 5, wherein the alkyl acrylate comprises or consist of 2-ethyl hexyl acrylate.7. The composition of any of claims 3 to 5, wherein the a, P-unsaturated ester comprises or consist of an alkyl methacrylate.8. The composition of claim 7, wherein the alkyl methacrylate comprises or consists of lauryl methacrylate.9. The composition of claim 7, wherein the alkyl methacrylate comprises or consists of 2- ethylhexyl methacrylate.The composition of claims 3 or 4, wherein the a. -unsaturated ester comprises or consists of a dialkyl maleate. The composition of claim 10, wherein the dialkyl maleate comprises or consists of bis-(2- ethylehexyl)maleate . The composition of claims 3 or 4, wherein the a, P-unsaturated ester comprises or consists of a dialkyl itaconate. The composition of claim 12, wherein the dialkyl itaconate comprises or consists of bis(2,4- dimethylpentyl)itaconate . The composition of any preceding claim, wherein the DMTD derivative is further reacted with a metal oxide, metal hydroxide, or metal alkoxide to form a metal salt. The composition of claim 14, wherein the metal is selected from zinc, titanium, molybdenum, animony, or mixtures thereof. The composition of any of claims 1 to 14, wherein the DMTD derivative is substantially free of or free of zinc. The composition of any of claims 1 to 13, wherein the DMTD derivative is further reacted with an amine to form an amine salt. The composition of claim 17 wherein the amine is selected from the group consisting of methylamine, ethylamine, n-propylamine, n-butylamine, n-hexylamine, n-octylamine, 2- ethylhexylamine, benzylamine, 2-phenylethylamine, cocoamine, oleylamine, tridecylamine, isopropylamine, sec-butylamine, t-butylamine, tert-hexylamine, 1 -methyl- 1 -aminocyclohexane, tert-octylamine, tert-decylamine, tert-dodecylamine, tert-tetradecylamine, terthexadecylamine, tertoctadecylamine, tert-tetracosanylamine, and tertoctacosanylamine, cyclopentylamine, cyclohexylamine, and 1 -phenylethylamine; dialkylamines, such as dimethylamine, diethylamine, dipropylamine, diisopropylamine, dibutylamine, dicyclohexylamine, di-(2-ethylhexyl)amine, dihexylamine, ethylbutylamine, N-ethylcyclohexylamine, and N-methylcyclohexylamine; cycloalkylamines, such as piperidine, N-ethylpiperidine, N,N"-dimethylpiperazine, morpholine, N-m ethylmorpholine, N- cthylmorpholinc, N-mcthylpipcridinc, pyrrolidine, N-mcthylpyrrolidinc, and N- ethylpyrrolidine; and trialkylamines, such as tetramethylethylenediamine, trimethylamine, triethylamine, tripropylamine, triisopropylamine, tri-butylamine, trihexylamine, N, N- dimethylbenzylamine, dimethylethylamine, dimethylisopropylamine, dimethylbutylamine, and N, N-dimethyl cyclohexylamine. The lubricating composition of any preceding claim, wherein the DMTD derivative is substantially free of or free of alkali metals and/or alkaline earth metals. The composition of any preceding claim, wherein the DMTD derivative is present in an amount to deliver at least 0.05% to 0.35% by weight or 0.07% to 0.3% by weight or 0.08% to 0.26% by weight sulfur to the lubricating composition. The composition of any preceding claim, wherein the lubricating composition further comprises one or more metal containing detergents. The composition of claim 21, wherein the metal of the metal containing detergent is selected from magnesium, calcium, sodium, and mixtures thereof. The composition of claim 21 or 22, wherein the detergent of the metal containing detergent is selected from sulfonates, phenates, salicylates, salixarates or mixtures thereof. The composition of any of claims 21 to 23, wherein the metal containing detergent comprises a calcium detergent and wherein the calcium detergent is present in an amount sufficient to deliver 500 ppm to 3000 ppm or 1000 ppm to 2500 ppm by weight calcium to the composition. The composition of any of claims 21 to 24, wherein the metal containing detergent comprises a magnesium detergent and wherein the magnesium detergent is present in an amount to deliver up to 500 ppm magnesium to the composition. Tire composition of any preceding claim further comprising a molybdenum compound.The composition of any preceding claim, wherein the composition comprises phosphorous in amounts of 0.2 wt% or less, or 0.12 wt % or less, or 0.1 wt % or less, or 0.09 wt % or less, or 0.08 wt % or less, or 0.06 wt % or less, 0.05 wt % or less, or 0.03 wt % or less, or even 0.02 wt % or less. The composition of any preceding claim, wherein the composition is substantially free of or free of phosphorous. The composition of any of claims 1 to 27 further comprising a metal alkylthiophosphate. The composition of claim 29, wherein the metal aklylthiophosphate comprises zinc dialkyldithiophosphate. The composition of claim 30, wherein the zinc dialkyldithiophosphate is present in an amount sufficient to provide from 0.02 to 0.2 wt% zinc to the composition. The composition of any of claims 1 to 31, wherein the composition contains 0.015 wt % or less of zinc. The composition of any of claims 1 to 32, wherein the composition contains zinc in amounts of less than 0.14 wt %, or even less than 0. 11 wt %, or even less than 0.09 wt%, or even less than 0.07 wt%, or even less than 0.05 wt%, or even less than 0.03 wt% , or 0.01 wt % to 0. 14 wt %. The composition of any of claims 1 to 29, wherein the composition is substantially free of zinc. The composition of any preceding claim, wherein the composition contains 0.1 to 0.4 wt % sulfurized olefins. The composition of any of claims 1 to 34, wherein the lubricating composition is substantially free of or free of sulfurized olefin additives.37. The composition of any of claims 1 to 36, wherein the composition has a total sulfated ash content of 2 wt % or less, or 1.6 wt % or less, or 1.1 wt % or less, or 1 wt % or less, or 0.8 wt % or less, or 0.6 wt % or less, or 0.5 wt % or less, or 0.05 wt % to 0.9 wt %, or 0.1 wt % to 0.2 wt % orto 0.45.38. A method of lubricating an internal combustion engine comprising: operating said engine with a lubricant composition comprising as recited in claims 1 to 37.39. A method of decomposing peroxide in a lubricating composition used to lubricate an internal combustion engine comprising: supplying to said internal combustion engine the lubricating composition as recited in claims 1 to 37.40. The use of a lubricating composition as recited in claims 1 to 37 for oxidation and deposit control in an internal combustion engine.