Lubricating oil with high oxidation stability
    7.
    发明授权
    Lubricating oil with high oxidation stability 失效
    具有高氧化稳定性的润滑油

    公开(公告)号:US07662271B2

    公开(公告)日:2010-02-16

    申请号:US11316311

    申请日:2005-12-21

    IPC分类号: C10G71/00 C10M159/22

    摘要: A lubricating oil (made from Group III base oil having a sequential number of carbon atoms) having a VI between 155 and 300, a RPVOT greater than 680 minutes, and a kinematic viscosity at 40° C. from 19.8 cSt to 748 cSt. A lubricating oil having a high VI and high RPVOT comprising: a) a Group III base oil with a sequential number of carbon atoms, and defined cycloparaffin composition or low traction coefficient, b) an antioxidant additive concentrate and c) no VI improver. A process comprising: a) hydroisomerization dewaxing of a waxy feed, b) fractionating the produced base oil, c) selecting a fraction having a VI greater than 150, and a high level of molecules with cycloparaffinic functionality or a low traction coefficient, and d) blending the fraction with an antioxidant additive concentrate. Also, a method of improving the oxidation stability of a lubricating oil.

    摘要翻译: VI为155〜300,RPVOT大于680分钟,运动粘度为19.8cSt〜748cSt的润滑油(具有连续数目的碳原子的III类基础油) 具有高VI和高RPVOT的润滑油包括:a)具有连续数目的碳原子的III族基础油和定义的环烷烃组成或低牵引系数,b)抗氧化添加剂浓缩物和c)没有VI改进剂。 一种方法,包括:a)蜡质进料的加氢异构化脱蜡,b)分馏所生成的基础油,c)选择VI大于150的馏分和具有环烷烃官能团或低牵引系数的高水平分子,d )将该级分与抗氧化添加剂浓缩物混合。 另外,提高润滑油的氧化稳定性的方法。