润滑科技信息平台

专利摘要

本发明涉及一种润滑剂,其包含选自烃、50至1000ppm水和烷氧基化醇的基础油,其中所述醇用选自C4-C20环氧化物的疏水性环氧化物烷氧基化。本发明还涉及一种用于润滑电动车辆中的机械装置的方法,包括使润滑剂与机械装置接触的步骤; 烷氧基化醇用于提高包含选自烃的基础油的润滑剂的击穿电压的用途; 以及烷氧基化醇在包含选自烃的基础油的润滑剂中用于减少放电加工的用途。 ......

基本信息

专利类型:
发明专利
申请/专利号:
PCT/EP2023/059402
申请日期:
2023-04-11
专利申请人:
分类号:
C10M125/14 ; C10N30/00 ; C10N40/16 ; C10N40/14
发明/设计人:
RITTIG, FRANK
权利要求: Claims1 . A method for lubricating a mechanical device in an electric vehicle comprising the step of contacting the lubricant with the mechanical device, where the lubricant comprises- a base stock selected from hydrocarbons,- 50 to 1000 ppm water, and- an alkoxylated alcohol, where the alcohol is alkoxylated with a hydrophobic epoxide selected from C4-C20 epoxides.2. The method according to claim 1 where the hydrophobic epoxide is selected from butylene oxide, dodecyl oxide, or a mixture thereof.3. The method according to claim 1 or 2 where the alcohol is alkoxylated with the hydrophobic epoxide and optionally in addition with propylene oxide.4. The method according to any of claims 1 to 3 where the alcohol is a selected from C1-C22 monoalcohol, C2-C12 diol, polyethylene glycol, polypropylene glycol, polytetrahydrofurane, or C3-C12 polyol.5. The method according to any of claims 1 to 4 where the lubricant comprises 2 to 50 wt%, preferably 10 to 25 wt%, of the alkoxylated alcohol.6. The method according to any of claims 1 to 5 where the hydrocarbons are selected from API Groups I, II, III or IV base stocks, or mixtures thereof.7. The method according to any of claims 1 to 6 where the lubricant is free from API Group V base stocks.8. The method according to any of claims 1 to 7 where the base stock has a breakdown voltage of up to 500 Volt.9. The method according to any of claims 1 to 8 where the alkoxylated alcohol is an alkoxylated polytetrahydrofurane of general formula (I)wherein m is an integer in the range of > 1 to 1 to < 50,(m+m’) is an integer in the range of > 1 to 0 to 0 to 0 to 0 to 2 to < 30,R1denotes an unsubstituted, linear or branched, alkyl radical having 6, 7, 8, 9, 10, 1 1 ,12, 13, 14, 15, 16, 17, 18, 19, 20, 21 , 22, 23, 24, 25, 26, 27 or 28 carbon atoms,R2denotes -CH2-CH3, andR3identical or different, denotes a hydrogen atom or -CH3, whereby the concatenations denoted by k are distributed to form a block polymeric structure and the concatenations denoted by p, p’, n, n’, m and m’ are distributed to form a block polymeric structure or a random polymeric structure. The method according to any of claims 1 to 9 where the lubricant comprises at least 50 wt% of the base stock. A lubricant as defined in the proceeding claims comprising a base stock selected from hydrocarbons which are selected from API Groups I, II, or III base stocks,- 50 to 1000 ppm water, and- an alkoxylated alcohol, where the alcohol is alkoxylated with a hydrophobic epoxide selected from C4-C20 epoxides, and where the alcohol is a diol selected from C2-C12 diol, polyethylene glycol, polypropylene glycol and polytetrahydrofurane. A use of the alkoxylated alcohol as defined in the proceeding claims for increasing the breakdown voltage of a lubricant comprising the basestock selected from the hydrocarbons. The use according to claim 12 where the breakdown voltage of the lubricant comprising the alkoxylated alcohol is at least 100 V higher compared to the lubricant without the alkoxylated alcohol. The use according to claim 12 or 13 in an electric vehicle.A use of the alkoxylated alcohol as defined in the preceding claims in a lubricant comprising the base stock selected from the hydrocarbons for reducing the electric discharge machining.