润滑科技信息平台

专利摘要

本技术包括硫化烯烃极压剂和二烷基二硫代磷酸锌的组合,以提供一种工业齿轮润滑组合物,该组合物为具有降低的硫含量的工业齿轮提供良好的极压性能。本发明包括一种润滑组合物,其包含具有润滑粘度的油、极压剂和二烷基二硫代磷酸锌试剂,所述极压剂包含向所述润滑组合物输送至多3000ppm硫的量的硫化烯烃,以及向所述润滑组合物输送100ppm硫的量的二烷基二硫代磷酸锌试剂。向润滑组合物添加600ppm磷,其中润滑组合物具有小于约6000ppm硫的总硫含量。 ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/US2024/017602
申请日期:
2024-02-28
专利申请人:
分类号:
C10M141/10
发明/设计人:
MCKENZIE, BLAYNE M. ， BARTON, WILLIAM R.S.
权利要求: CLAIMSWhat is claimed is:1. A lubricating composition comprising: an oil of lubricating viscosity; an extreme pressure agent comprising a sulfurized olefin in an amount to deliver up to 3000 ppm sulfur to the lubricating composition; and a zinc dialkyl dithiophosphate agent in an amount to deliver 100 ppm to 600 ppm phosphorous to the lubricating composition, wherein the lubricating composition has a total sulfur content of less than about 6000 ppm sulfur.2. The lubricating composition of claim 1, wherein the zinc dialkyl dithiophosphate is derived a primary alcohol, a secondary alcohol, or a mixture thereof.3. The lubricating composition of claim 1 or 2, wherein the zinc dialkyl dithiophosphate comprises at least 30 mol % secondary alkyl groups, or at least 50 mol % secondary alkyl groups, or at least 90 mol % secondary alkyl groups.4. The lubricating composition of any preceding claim, wherein the zinc dialkyl dithiophosphate contains alkyl groups comprising or consisting essentially of secondary alkyl groups containing 3 to 12 carbon atoms.5. The lubricating composition of any preceding claim, wherein the zinc dialkyl dithiophosphate contains at least 25 mol %, or at least 40 mol % alkyl groups having 3 or 4 carbon atoms.6. The lubricating composition of any preceding claim, wherein the zinc dialkyl dithiophosphate contains a 60:40 mol ratio of C3 and C6 secondary alkyl groups.7. The lubricating composition of claim 4, wherein the zinc dialkyl dithiophosphate contains secondary C6 alkyl groups.8. The lubricating composition of any preceding claim, wherein the sulfurized olefin contains 2 to 40 carbon atoms.9. The lubricating composition of any preceding claim, wherein the sulfurized olefin comprises or consists of sulfurized isobutylene.10. The lubricating composition of any preceding claim, wherein the sulfurized olefin comprises a sulfurized olefin derived from sulfurized vegetable oil or sulfurized lard.11. The lubricating composition of any preceding claim, wherein the sulfurized olefin comprises a mixture of sulfurized isobutylene and a sulfurized olefin derived from natural sources.12. The lubricating composition of any preceding claim, wherein the oil of lubricating viscosity comprises a mineral base oil.13. The lubricating composition of any of claims 1 to 11, wherein the oil of lubricating viscosity comprises a synthetic base oil.14. The lubricating composition of claims 1 to 11, wherein the oil of lubricating viscosity comprises or consists of a Group I base oil.15. The lubricating composition of claim 14, wherein the oil of lubricating viscosity is at least 50% by weight or at least 75% by weight, or at least 90% by weight, or at least 99% by weight Group I base oil.16. The lubricating composition of any preceding claim, wherein the lubricating composition has an ISO viscosity grade of 68 to 1000 or 100 to 480.17. The lubricating composition of any preceding claim, wherein the lubricating composition contains 0.15% by weight to 0.9% by weight-by-weight sulfurized olefin.18. The lubricating composition of any preceding claim, wherein the lubricating sulfurized olefin is present in an amount sufficient to deliver 40% by weight to 60% by weight of the total sulfur content.19. The lubricating composition of any preceding claim, wherein the lubricating composition contains 50, 75, 100 or even 150 ppm up to 5, 4, 3, 2 or even 1.5 wt%, or from 75 ppm to 0.5 wt%, from 100 ppm to 0.4 wt%, or from 150 ppm to 0.3 wt%up to 5% by weight, or up to 3% by weight, or up to 2% by weight, or 0.1 to 5%, of additional additives selected from foam inhibitors, demulsifiers, pour point depressants, antioxidants, dispersants, metal deactivators, detergents, viscosity modifiers, or some mixture thereof.20. The lubricating composition of any preceding claim, wherein the lubricating composition further comprises 50 to 400 ppm of a dispersant.21. The lubricating composition of claim 16, wherein the dispersant comprises or consists of a polyolefin amide alkeneamine.22. The lubricating composition of any preceding claim, wherein the lubricating composition is substantially free of a metal-containing detergent.23. The lubricating composition of any preceding claim, wherein the lubricating composition further comprises an alkenyl amine friction modifier.24. The lubricating composition of any preceding claim, wherein the lubricating composition further comprises a polyether based demulsifier.25. The lubricating composition of any preceding claim, wherein the lubricating composition further comprises a corrosion inhibitor selected from substituted thiadiazole, triazole derivative, or combination thereof.26. The lubricating composition of any preceding claim, wherein the lubricating composition further comprises ester copolymer anti-foam agent.27. A method of lubricating an industrial gear, comprising: supplying to the industrial gear the lubricating composition of any preceding claim.28. The use of the lubricating composition of any of claims 1 to 26 to improve the extreme pressure performance of an industrial gear29. The use of the lubricating composition of any of claims 1 to 26 to improve the Timken OK load performance of an industrial gear.