润滑科技信息平台

专利摘要

公开了一种润滑剂组合物,包括: -至少一种基础油; -0.1至30重量%的式(A)的咪唑啉化合物,其被定义为: -R 1 表示在链的末端任选被取代的包含1至16个碳原子的直链或支链烷基或烯基 , 由选自 NH2、OH 和 SH 的基团组成; -R2表示包含1至36个碳原子的直链或支链烷基或烯基。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2020734060
申请日期:
2020-06-26
专利申请人:
分类号:
["C10M133/46","C10M133/58","C10N30/06","C10N30/12","C10N40/25"]
发明/设计人:
NEVILLE, ANNE ， ABEDI ESFAHANI, ERFAN ， MORINA, ARDIAN ， AMBLARD, CATHERINE
权利要求: 1. A lubricant composition comprising, relative to the total weight of the composition: - at least 50 weight % of at least one base oil; and - 0.1 to 30 % by weight of an imidazoline compound of formula (A): defined such that: - R1 represents a linear or branched alkyl group comprising 1 to 16 carbon atoms, optionally substituted at the end of the chain by a group selected from among NH2 or SH, or R1 represents a linear or branched alkenyl group comprising 2 to 16 carbon atoms, optionally substituted at the end of the chain by a group selected from among NH2 or SH; and - R2 represents a linear or branched alkyl group comprising 1 to 36 carbon atoms, or R2 represents a linear or branched alkenyl group comprising 2 to 36 carbon atoms.2. The composition according to claim 1, further comprising at least one additive selected from among detergents, dispersants and mixtures thereof.3. The composition according to claim 2, wherein: - the amount of detergent varies from 3 to 40 %, preferably from 5 % to 30 %, advantageously from 10 % to 25 % by weight, relative to the total weight of the lubricant composition; and/or - the amount of dispersant varies from 0.01 % to 10 %, preferably from 0.1 % to 5 %, advantageously from 0.5 % to 3 % by weight, relative to the total weight of the lubricant composition.4. The composition according to claim 2 or 3, wherein the dispersants are selected from among succinimides, such as polyisobutylene bis-succinimides, optionally borated or zinc-blocked.5. The composition according to any of claims 2 to 4, wherein the detergents are calcium carbonate overbased detergents selected from among carboxylates, phenates, sulfonates, salicylates, and mixed phenate-sulfonate-salicylate detergents.6. The composition according to any of the preceding claims, wherein the compound of formula (A) corresponds to the compound of formula (I) defined by the following formula: 7. Use of a compound of formula (A) such as defined in claims 1 or 6 in a lubricant composition comprising at least one base oil to prevent and/or reduce corrosion and/or tribocorrosion of at least one metal part in an engine, in particular a two-stroke engine, for example a marine two-stroke engine.8. Use of the composition according to any of claims 1 to 6 to prevent and/or reduce corrosion and/or tribocorrosion of at least one metal part in an engine, in particular a two-stroke engine, for example a marine two-stroke engine.9. The use according to claim 8 wherein the metal part is a cylinder, preferably a cast iron cylinder.10. A method for passivating at least one metal part of an engine, in particular a two-stroke engine, for example a marine two-stroke engine, comprising at least one step to place said metal part in contact with a lubricant composition defined according to any of claims 1 to 6.