| 发明名称 |
High efficiency engine oil compositions |
| 摘要 |
This invention is directed to passenger car engine oil compositions comprising in admixture 60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis. |
| 申请公布号 |
US9234152(B2) |
申请公布日期 |
2016.01.12 |
| 申请号 |
US201213611676 |
申请日期 |
2012.09.12 |
| 申请人 |
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY |
发明人 |
Martin Richard Wayne;Deckman Douglas Edward;Kelly Kevin John;Emett Craig Janzen;Hagemeister Mark Paul;Harrington Bruce Allan;Lin Chon-Yie;Matsunaga Phillip Thomas;Ruff Charles James;Stavens Kevin Bruce |
| 分类号 |
C10M105/04;C10M107/02;C10M107/10;C10M169/04;C10M103/00;C10M105/32;C10M169/02;C10M171/02;C10M111/04 |
主分类号 |
C10M105/04 |
| 代理机构 |
|
代理人 |
Kato Derek M.;Migliorini Robert A. |
| 主权项 |
1. An engine oil composition, comprising in admixture:
60 wt % to 90 wt % of a first base oil component, based on the total weight of the composition, the first base oil component consisting of a polyalphaolefin base stock or combination of polyalphaolefin base stocks, each having a kinematic viscosity at 100° C. of from 3.2 cSt to 3.8 cSt and a Noack volatility of less than or equal to 12.5 wt. %; 0.1 wt % to 20 wt % of a second base oil component, based on the total weight of the composition, the second base oil component consisting of a Group II, Group III or Group V base stock, or any combination thereof; and at least 0.75 wt % viscosity index improver, on a solid polymer basis; wherein the composition has a kinematic viscosity at 100° C. of from 5.6 to 16.3 cSt, a Noack volatility of less than 15% as determined by ASTM D5800, a CCS viscosity of less than 6200 cP at −35° C. as determined by ASTM D5293, and an HTHS viscosity of from 2.5 mPa-s to 4.0 mPa-s at 150° C. as determined by ASTM D4683. |
| 地址 |
Annandale NJ US |
