润滑科技信息平台

专利摘要

This invention provides a method for extending the life of a lubricant composition, said lubricant composition comprising one or more base oils and one or more additives, wherein at least one of the additive is a depleting additive, said method comprising: i. determining the amount of the one or more depleting additives required for a desired extended lifetime of the lubricant composition, wherein said extended lifetime is longer than the standard lifetime of said lubricant composition; ii. providing a first portion of said one or more depleting additives to the fresh lubricant composition; and iii. providing the remainder of the amount of the one or more depleting additives in two or more portions spread over the standard lifetime of the lubricant composition. ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/EP2023/052249
申请日期:
2023-01-31
专利申请人:
["国际壳牌研究有限公司","SHELL USA INC"]
分类号:
["C10M177/00","F01M9/02"]
发明/设计人:
ONDARZA, FREDERICK JOHN ， SONG, WENSI ， CROM, LORI ANN
权利要求: C L A I M S1. A method for extending the life of a lubricant composition, said lubricant composition comprising one or more base oils and one or more additives, wherein at least one of the additive is a depleting additive, said method comprising : i. determining the amount of the one or more depleting additives required for a desired extended lifetime of the lubricant composition, wherein said extended lifetime is longer than the standard lifetime of said lubricant composition; ii. providing a first portion of said one or more depleting additives to the fresh lubricant composition; and iii. providing the remainder of the amount of the one or more depleting additives in two or more portions spread over the standard lifetime of the lubricant composition.2. A method as claimed in Claim 1, wherein the one or more depleting additives are selected from one or more of antioxidant additives, antiwear additives and anti-rust or anti-corrosion additives.3. A method as claimed in Claim 2, wherein the one or more depleting additives in the present invention is one or more antioxidant additives4. A method as claimed in Claim 1, wherein the one or more depleting additives are selected from hindered phenolic antioxidants, aminic antioxidants and mixtures thereof.5. A method as claimed in any one of Claims 1 to 4, wherein the overall amount of the one or more depleting additives used is suitably no more than lwt% and no less than 0.001wt%, based on the overall mass of thelubricating composition.6. A method as claimed in any one of Claims 1 to 5, wherein the first portion of the one or more depleting additives is an amount in the range of from 30 to 70wt%, preferably in the range of from 40 to 60wt%, of the overall amount of the one or more depleting additives.7. A method as claimed in Claim 6, wherein remainder of the amount of the one or more depleting additives is provided in two further portions and each further portion contains in the range of from 40 to 60wt%, preferably about 50wt% of the remainder of the amount of the depleting additive.8. A method as claimed in Claim 6, wherein remainder of the amount of the one or more depleting additives is provided in three further portions and each further portion contains in the range of from 30 to 35wt%, preferably about 33wt% of the remainder of the amount of the depleting additive.9. A method as claimed in any one of Claims 1 to 8, wherein the further portions are provided as an additive booster package comprising one or more antioxidant additives and one or more base oils.10. A method as claimed in any one of Claims 1 to 9, wherein said periods are roughly evenly spaced across the standard lifetime.