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

船用发动机润滑剂

专利摘要

[0001] 本发明涉及润滑油领域,更具体地涉及船用发动机特别是二冲程船用发动机的润滑油。更具体地,本发明涉及一种用于船用发动机的润滑剂,其包含至少一种润滑剂基础油和至少一种二烷基氨基多烷基胺。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2020799728
申请日期:
2020-11-05
专利申请人:
分类号:
["C10M105/60","C10M163/00","C10M169/04"]
发明/设计人:
DOYEN, VALÉRIE ， DE FEO, MODESTINO ， CHAO, GREGORY
权利要求: 1. Lubricant composition comprising: - at least one lubricant base oil, - at least one di-alkylaminopolyalkylamine responding to formula (I): wherein, • R1, R2 represent, independently, an alkyl moiety with 1 to 3 carbon atoms, which is linear or branched, • n and m are integers representing, independent of each other either 1, 2, or 3, and • the total number of carbon atoms in formula (I) is from 4 to 10.2. The lubricant composition according to claim 1, wherein in formula (I), R1= R2=CH3.3. The lubricant composition according to claim 1, wherein the di-alkylaminopolyalkylamine (I) responds to formula (IA): wherein R1, R2 represent, independently, an alkyl moiety with 1 or 2 carbon atoms.4. The lubricant composition according to anyone of claims 1 to 3, wherein the di-alkylaminopolyalkylamine responding to formula (I) is dimethylaminopropylaminopropylamine: 5. The lubricant composition according to anyone of claims 1 to 4, wherein the percentage by weight of di-alkylaminopolyalkylamine of formula (I), particularly DMAPAPA, relative to the total weight of lubricant composition is chosen such that the BN provided by the di-alkylaminopolyalkylamine of formula (I) represents a contribution of at least 0.1 milligrams of potash per gram of lubricant, relative to the total BN of said lubricant.6. The lubricant composition according to anyone of claims 1 to 5, wherein the percentage by weight of di-alkylaminopolyalkylamine of formula (I), particularly DMAPAPA, relative to the total weight of the lubricant composition ranges from 0.05 to 10%.7. The lubricant composition according to anyone of the preceding claims, wherein it comprises: • from 90.00 to 99.95 % of at least one base oil, • from 0.05 to 10.00 % of at least one di-alkylaminopolyalkylamine of formula (I), particularly DMAPAPA, the percentages being defined by weight of component as compared to the total weight of the composition.8. The lubricant composition according to anyone of claims 1 to 6, wherein it comprises at least one detergent selected from neutral and overbased detergents having a Total Base Number according to ASTM D2896 of from 20 to 500 mg KOH/g.9. The lubricant composition of claim 8, wherein it comprises from 1 to 35% weight of neutral and overbased detergents, with regards to the total weight of the lubricant composition.10. The lubricant composition of claim 9, wherein it comprises: • from 60.0 to 98.5 % of at least one base oil, • from 0.5 to 5.0% of at least one amine of formula (I), preferably DMAPAPA, • from 1.0 to 35.0 % of at least one detergent selected from neutral and overbased detergents having a Total Base Number according to ASTM D2896 of from 20 to 500 mg KOH/g the percentages being defined by weight of component as compared to the total weight of the composition.11. The lubricant composition according to anyone of claims 1 to 10, which has a Total Base Number value according to ASTM D2896 of above 10 mg KOH/g.12. The lubricant composition according to anyone of claims 1 to 11, which has a kinematic viscosity at 100°C superior or equal to 5.6 mm2/s and inferior or equal to 26.1 mm2/s.13. Use of a lubricant composition according to anyone of claims 1 to 12 for improving the kinematic neutralization of sulphuric acid and/or sulphurous acid in the hot of a marine engine, notably of a two-stroke marine engine, as determined by the test method described in the description.14. A method for lubricating a marine engine, and more particularly a two-stroke marine engine, comprising operating the engine with the lubricant composition according to anyone of claims 1 to 12.