Patent SG-11201901539U-A (SG)
Title: High conductivity lubricating oils for electric and hybrid vehicles
Inventor: GAO ZHISHENG
IPC: C10M167/00
Filed: 2017-10-06
Abstract: ON O GC O -1 Cs1 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 12 April 2018 (12.04.2018) WIP0 1 PCT omit VIII °nolo III 110101011110101101 IIIImo oimIE (10) International Publication Number WO 2018/067906 Al (51) International Patent Classification: C/OM 167/00 (2006.01) (21) International Application Number: PCT/US2017/055496 (22) International Filing Date: 06 October 2017 (06.10.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/405,283 07 October 2016 (07.10.2016) US 15/725,635 05 October 2017 (05.10.2017) US (71) Applicant: EXXONMOBIL RESEARCH AND EN- GINEERING COMPANY [US/US]; 1545 Route 22 East, P.O. Box 900, Annandale, NJ 08801-0900 (US). (72) Inventors: GAO, Zhisheng; 2 Buttonwood Way, Rose Valley, PA 19063 (US). SALVI, Luca; 135 Adrmore Av- enue, Haddonfield, NJ 08033 (US). FLORES-TORRES, Samuel; 37 Steeplechase Boulevard, Burlington, NJ 08016 (US). (74) Agent: MIGLIORINI, Robert A et al.; Exxonmobil Re- search and Engineering Company, 1545 Route 22 East, P.O. Box 900, Annandale, NJ 08801-0900 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: HIGH CONDUCTIVITY LUBRICATING OILS FOR ELECTRIC AND HYBRID VEHICLES Lubricant Oils for Electric Vehicles; Conductivity 3,000-20,000 pS/m 1 FIG. 4 - - Lubricant Oils for Electric 'Vehicle Cunducthity 3,000-20,000 pS/m Example I Example 39 40 Example 41 Example 42 Example 43 Example 44 [ COMPOSITION (wt%) i- 1 Sec-ZDDP Mannich lispeisain I 3 I 3 Boren-modified P113 Suecinimide 3 Calcium Salicylatc (<100 TBN) r Calcium Sulfonate (< 1 00 TBN) I 3 4 3 3 3 3 Viscosity Modifier 1 1 Lubricatingpil A.dditiv; , Base Oil Group 111, IV. V mixtures) 1 1 96 95 1 93 1 95 1. 93 1 93 PROPERTIES 1 Kinematic Viscosity, 100C, cSt 4.76 4,25 4.68 Conductivity, pSim, Ambient temp - 2910 1 3810 7660 7940 9450 18980 I Dielectric Constant 2,21 2.22 223 121 2.23 2.24 J FIG. 4 (57) : Provided is a lubricating oil for electric and hybrid vehicles. The lubricating oil has a composition including at least 80 wt % of a lubricating base oil, from 0.8 to 5 wt % of one or more metal detergents, from 0 to 5 wt % of one or more dispersants, from 0 to 1.5 wt % of zinc dialkyldithiophosphate antiwear agent, from 0 to 0.2 wt % of a molybdenum dialkyldithiocarbamate, from 0 to 2 wt % of a viscosity modifier based on active ingredient, and from 0.01 to 5 wt % of other lubricating oil additives. The lubricating oil has an electrical conductivity from 3,000 to 20,000 pS/m, and kinematic viscosity from 2 to 20 cSt at 100°C. This disclosure also relates to methods for producing the lubricating oil, methods for lubricating electric and hybrid vehicles, and methods for controlling electrical conductivity of a lubricating oil by using conductivity promoters and conductivity inhibitors. [Continued on next page] WO 2018/067906 Al MIDEDIMOMOIDEIREIDIMINEMEROMEMOIMIE Published: — with international search report (Art. 21(3))