Patent SG-11201906477X-A (SG)
Title: Lubricants with calcium and magnesium-containing detergents and their use for improving low-speed pre-ignition and for corrosion resistance
Inventor: RANSOM PAUL
IPC: C10M159/22
Filed: 2017-11-09
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 26 July 2018 (26.07.2018) WIPO I PCT omit VIII °nolo o1111 oimIE (10) International Publication Number WO 2018/136137 Al (51) International Patent Classification: C/0M 159/20 (2006.01) Cl OM 159/24 (2006.01) ClOM 159/22 (2006.01) (21) International Application Number: PCT/US2017/060957 (22) International Filing Date: 09 November 2017 (09.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/409,509 18 January 2017 (18.01.2017) US (71) Applicant: AFTON CHEMICAL CORPORATION [US/US]; 500 Spring Street, Richmond, Virginia 23219 (US). (72) Inventors: RANSOM, Paul; 1 Clough Hey, Manches- ter Road, Marsden Huddersfield HD7 6DW (GB). CAR- PENTIER, Guillaume; 1 Wyvern Close, Bracknell Berk- shire RG12 (GB). FLETCHER, Kristin; 2616 Cradle Hill Court, Midlothian, Virginia 23112 (US). (74) Agent: DUNLEAVY, Kevin, J. et al.; Mendelsohn Dun- leavy, P.C., 1500 John F. Kennedy Blvd., Suite 312, Philadelphia, Pennsylvania 19102 (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). Published: — with international search report (Art. 21(3)) W O 20 18/ 136 137 Al (54) Title: LUBRICANTS WITH CALCIUM AND MAGNESIUM-CONTAINING DETERGENTS AND THEIR USE FOR IM- PROVING LOW-SPEED PRE-IGNITION AND FOR CORROSION RESISTANCE (57) : A lubricating oil composition and method of operating a boosted internal combustion engine with reduced low-speed pre- ignition events and corrosion resistance. The oil composition includes a base oil, one or more overbased calcium sulfonate detergents, one or more overbased calcium phenate detergents, and one or more overbased magnesium- containing detergents. A ratio of ppm of calcium to TBN of the oil composition is less than 170; a ratio of ppm of magnesium to total soap content in wt.% is greater than 700; and there are limited amounts of boron and molybdenum, and all weight percentages and ppm values being based on the total weight of the oil composition. The compositions give low LSPI ratios and pass the Ball Rust test.