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

用于农业机械的液压油组合物

专利摘要

拖拉机液压油组合物包含: (i) 主要量的润滑粘度油; (ii)一种或多种分散剂; (iii)公开了一种或多种磷酸酯或磷酸酯的胺盐。该组合物可用于降低制动噪音并保持摩擦性能,同时为拖拉机中的液压部件提供润滑性。 ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/US2024/022594
申请日期:
2024-04-02
专利申请人:
雪佛龙奥伦耐有限责任公司
分类号:
["C10M141/10","C10N30/00","C10N40/04","C10N40/08"]
发明/设计人:
OHTA, SATOSHI ， SAWAIRI, RYOTA ， SHIMIZU, SEIYA ， NAKAGAWA, TAKAHIRO
权利要求: CLAIMS1. A tractor hydraulic fluid composition comprising:(i) a major amount of an oil of lubricating viscosity;(ii) one or more dispersants; and(iii) one or more phosphate esters or amine salts of phosphate esters.2. The tractor hydraulic fluid composition of claim 1, wherein the one or more dispersants comprise succinimide dispersants.3. The tractor hydraulic fluid composition of claim 2, wherein the succinimide dispersants comprise bissuccinimide dispersants.4. The tractor hydraulic fluid composition of claim 1, wherein the phosphate ester is a compound of Formula 1 :Formula 1 wherein each of R1, R2and R3is independently selected from H, C3-C30 alkyl, and C3- C30 alkenyl, and at least one of R1, R2and R3is not H.5. The tractor hydraulic fluid composition of claim 1, wherein the amine salt of a phosphate ester is a compound of Formula 2:Formula 2wherein each of R1and R2are independently selected from H, C3-C30 alkyl, and C3-C30 alkenyl, and at least one of R1and R2is not H; and wherein each R is independently selected from H, C1-C30 alkyl, and C1-C30 alkenyl.6. The tractor hydraulic fluid composition of claim 5, wherein the+NR4 is a primary amine.7. The tractor hydraulic fluid composition of claim 1, wherein the composition further comprises one or more friction modifiers.8. The tractor hydraulic fluid composition of claim 7, wherein the one or more friction modifiers includes polyol or polyol ester.9. The tractor hydraulic fluid composition of claim 1, wherein the amount of one or more dispersants in the composition is in the range of about 0.1 to about 5 wt% of the total composition.10. The tractor hydraulic fluid composition of claim 1, wherein the amount of one or more phosphate esters or amine salts of phosphate esters in the composition is in the range of about 0.1 to about 2 wt % of the total composition.11. A method of reducing brake noise in a tractor, comprising: applying a tractor hydraulic fluid composition according to claim 1 to a braking component or system in a tractor; and operating the tractor.12. The method of claim 11, wherein the tractor is operated in the presence of water or in wet environments.13. A method of maintaining frictional performance in a tractor, comprising: applying a tractor hydraulic fluid composition according to claim 1 to one or more components selected from the group consisting of: gearboxes, power take-off and clutch(es), rear axles, reduction gears, wet brakes and hydraulic accessories; and operating the tractor.14. The method of claim 13, wherein the tractor is operated in the presence of water or in wet environments.