润滑科技信息平台

专利摘要

齿轮油组合物包括第一油基础油料和第二基础油料。第一基础油包括具有250mm的运动粘度(ASTM D445,40℃)的II类光亮油 2 /s 至 600 毫米 2 /s,运动粘度(ASTM D445,100℃)为20mm 2 /s 至 70 毫米 2 /s,80至120的粘度指数(ASTM D2270),以及-50℃至-20℃的倾点(ASTM D97)。第二基础油料包括具有运动学特性的聚α烯烃(PAO)基础油料粘度(ASTM D445,40°C)为 500 mm 以上 2 /s 至 3500 毫米 2 /s,运动粘度(ASTM D445,100℃)为 60 mm 2 /s 至 300 毫米 2 /s,粘度指数(ASTM D2270)为150至250,倾点(ASTM D97)为-50℃至-20℃。 ......

基本信息

专利类型:
发明专利
申请/专利号:
US18/651789
申请日期:
2024-05-01
专利申请人:
埃克森美孚科技工程公司
分类号:
["C10M169/04","C10M101/02","C10M107/02","C10M111/04","C10M127/06","C10M129/72","C10M129/74","C10M141/02","C10N20/02","C10N30/02","C10N30/04","C10N30/10","C10N30/12","C10N30/18","C10N40/04"]
发明/设计人:
HAWKINS, HARRISON T. ， BLUMENFELD, MICHAEL ， BROWN, NILKA Y. ， PATHARE, RUGVED P.
权利要求: 1. A gear oil composition comprising:a first oil basestock, the first oil basestock being a Group II bright stock having:a kinematic viscosity (ASTM D445, 40° C.) of from 250 mm2/s to 600 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 20 mm2/s to 70 mm2/s,a viscosity index (ASTM D2270) of from 80 to 120, anda pour point (ASTM D97) of from −50° C. to −20° C.; anda second oil basestock, the second oil basestock being a polyalphaolefin (PAO) basestock having:a kinematic viscosity (ASTM D445, 40° C.) of from 500 mm2/s to 3500 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 60 mm2/s to 300 mm2/s,a viscosity index (ASTM D2270) of from 150 to 250, anda pour point (ASTM D97) of from −50° C. to −20° C.2. The gear oil composition of claim 1, wherein the first oil basestock is present from 15 wt. % to 50 wt. %, by total weight of the gear oil composition.3. The gear oil composition of claim 1, wherein the second oil basestock is present from 10 wt. % to 70 wt. %, by total weight of the gear oil composition.4. The gear oil composition of claim 1, wherein the second oil basestock is selected from the group consisting of a light conventional PAO, a heavy conventional PAO, a metallocene PAO, and any combination thereof.5. The gear oil composition of claim 1, wherein the first oil basestock and the second oil basestock is present from 60 wt. % to 99.5 wt. %, by total weight of the gear oil composition.6. The gear oil composition of claim 1, further comprising a solubilizing agent and wherein the solubilizing agent is selected from the group consisting of a dibasic acid and an alcohol; an ester of a monocarboxylic acid of 5 to 18 carbon atoms and polyol; a polyoxyalkylene glycol; a polyoxyalkylene glycol ester; a polyoxyalkylene glycol ether and phosphate ester; a naphthalene compound; and any combination thereof.7. The gear oil composition of claim 1, further comprising a third oil basestock, the third oil basestock being a Group V basestock having:a kinematic viscosity (ASTM D445, 40° C.) of from 15 mm2/s to 600 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 4 mm2/s to 60 mm2/s,a viscosity index (ASTM D2270) of from 80 to 200, anda pour point (ASTM D97) of from −60° C. to −20° C.8. The gear oil composition of claim 7, wherein the first oil basestock, the second oil basestock, and the third oil basestock is present from 60 wt. % to 99.5 wt. %, by total weight of the gear oil composition.9. The gear oil composition of claim 1, further comprising at least one additive selected from the group consisting of an ashless dispersant, a pour point depressant, an antifoaming agent, an antioxidant, a rust inhibitor, a friction modifier, and any combination thereof.10. The gear oil composition of claim 1, further comprising an ashless dispersant present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition.11. The gear oil composition of claim 1, further comprising a pour point depressant present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition.12. The gear oil composition of claim 1, further comprising an antifoaming agent present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition.13. The gear oil composition of claim 1, further comprising (1) an antioxidant present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition; (2) a rust inhibitor present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition; or both (1) and (2).14. The gear oil composition of claim 1, further comprising a friction modifier present from 0.05 wt. % to 5 wt. %, by total weight of the gear oil composition.15. The gear oil composition of claim 1, wherein the gear oil has a pour point of less than −20° C. in the absence of a pour point depressant.16. The gear oil composition of claim 1, wherein the gear oil has a viscosity index from greater than 150 in the absence of a viscosity index improver.17. The gear oil composition of claim 1, wherein the gear oil is pre-blended and is combined with a second pre-blended gear oil comprising the composition of claim 1, and wherein the combination exhibits a lower viscosity index and lower kinematic viscosity at 40° C. and 100° C. compared to each of the pre-blended compositions alone.18. The gear oil composition of claim 1, wherein the first oil basestock as a kinematic viscosity (ASTM D445, 40° C.) of from 288 mm2/s to 352 mm2/s.19. A method comprising:mixing a first oil basestock and a second basestock,wherein the first basestock is a Group II bright stock having:a kinematic viscosity (ASTM D445, 40° C.) of from 250 mm2/s to 600 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 20 mm2/s to 70 mm2/s,a viscosity index (ASTM D2270) of from 80 to 120, anda pour point (ASTM D97) of from −50° C. to −20° C.; andwherein the second basestock is a polyalphaolefin (PAO) basestock having:a kinematic viscosity (ASTM D445, 40° C.) of from 500 mm2/s to 3500 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 60 mm2/s to 300 mm2/s,a viscosity index (ASTM D2270) of from 150 to 250, anda pour point (ASTM D97) of from −50° C. to −20° C.20. The method of claim 19, further comprising a third oil basestock, the third oil basestock being a Group V basestock having:a kinematic viscosity (ASTM D445, 40° C.) of from 15 mm2/s to 600 mm2/s,a kinematic viscosity (ASTM D445, 100° C.) of from 4 mm2/s to 60 mm2/s,a viscosity index (ASTM D2270) of from 80 to 200, anda pour point (ASTM D97) of from −60° C. to −20° C.