基本信息:
- 专利标题： LUBRICANT COMPOSITIONS HAVING IMPROVED OXIDATION PERFORMANCE
- 申请号：US16221727 申请日：2018-12-17
- 公开(公告)号：US20190194569A1 公开(公告)日：2019-06-27
- 发明人： Daniel J. EICHELSDOERFER , Richard C. DOUGHERTY , Charles L. BAKER, JR.
- 申请人： ExxonMobil Research and Engineering Company
- 主分类号： C10M169/04
- IPC分类号： C10M169/04 ; C10M105/04
摘要：
Disclosed are lubricant compositions with improved oxidation stability which are prepared with Group III base stocks comprising greater than or equal to about 90 wt. % saturated hydrocarbons (saturates); a viscosity index from 120 to 145; a unique ratio of molecules with multi-ring naphthenes to single ring naphthenes (2R+N/1RN); a unique ratio of branched carbons to straight chain (BC/SC) carbons; and a unique ratio of branched carbons to terminal chain (BC/TC) carbons.