Lubricating oil with enhanced protection against wear and corrosion
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10M-169/04
C10M-125/10
출원번호
US-0397081
(2012-02-15)
등록번호
US-8709987
(2014-04-29)
발명자
/ 주소
Duchesne, Perla
McDonald, John
Gilles, Sinquin
Tequi, Pierre
출원인 / 주소
Chevron Oronite S.A.
인용정보
피인용 횟수 :
0인용 특허 :
13
초록▼
Provided is a lubricating oil composition comprising: (a) a major amount of an oil of lubricating viscosity; and (b) one or more borated alkaline earth metal alkyltoluene sulfonate detergents; wherein the lubricating oil composition comprises no more than about 0.20 wt. % of phosphorus and no more t
Provided is a lubricating oil composition comprising: (a) a major amount of an oil of lubricating viscosity; and (b) one or more borated alkaline earth metal alkyltoluene sulfonate detergents; wherein the lubricating oil composition comprises no more than about 0.20 wt. % of phosphorus and no more than about 0.50 wt. % of sulfur.
대표청구항▼
1. A lubricating oil composition comprising: (a) a major amount of an oil of lubricating viscosity; (b) about 5 to about 60 mM of one or more overbased borated alkaline earth metal alkyltoluene sulfonate detergents; (c) a mixture of a low overbased calcium sulfonate detergent and a high overbased ca
1. A lubricating oil composition comprising: (a) a major amount of an oil of lubricating viscosity; (b) about 5 to about 60 mM of one or more overbased borated alkaline earth metal alkyltoluene sulfonate detergents; (c) a mixture of a low overbased calcium sulfonate detergent and a high overbased calcium phenate detergent, wherein the low overbased calcium sulfonate detergent has a TBN of less than 100 and the high overbased calcium phenate detergent has a TBN of greater than 100; and (d) one or more friction modifiers, wherein at least one of the friction modifiers is a molybdenum succinimide complex; wherein the lubricating oil composition comprises no more than about 0.20 wt. % of phosphorus and no more than about 0.50 wt. % of sulfur. 2. A lubricating oil composition comprising: (a) a major amount of an oil of lubricating viscosity; and (b) about 5 to about 60 mM of one or more overbased borated alkaline earth metal alkyltoluene sulfonate detergents prepared by a process comprising: (i) reacting (1) at least one oil soluble toluene sulfonic acid, or an oil soluble alkaline earth metal toluene sulfonate salt, or a mixture thereof; (2) at least one source of an alkaline earth metal; and (3) one or more overbasing acids, at least one of which is boric acid, in the presence of a mixture comprising: (4) at least one hydrocarbon solvent; and (5) at least one low molecular weight alcohol; (ii) heating the reaction product from step (i) to a temperature that is greater than the distillation temperatures of the hydrocarbon solvent, the low molecular weight alcohol, and any water generated from step (i), so that the solvent, alcohol and water generated may be distilled from the product of step (i); wherein no external source of water is added to the reaction mixture during the process; wherein the lubricating oil composition further comprises (c) a mixture of a low overbased calcium sulfonate detergent and a high overbased calcium phenate detergent, wherein the low overbased calcium sultanate detergent has a TBN of less than 100 and the high overbased calcium phenate detergent has a TBN of greater than 100; and (d) one or more friction modifiers, wherein at least one of the friction modifiers is a molybdenum succinimide complex and further wherein the lubricating oil composition comprises no more than about 0.20 wt. % of phosphorus and no more than about 0.50 wt. % of sulfur. 3. The lubricating oil composition of claim 1, wherein the one or more overbased borated alkaline earth metal alkyltoluene sulfonate detergents has a TBN of about 10 to about 500. 4. The lubricating oil composition of claim 1, further comprising one or more additives selected from the group consisting of ashless dispersants, antiwear agents, viscosity index modifiers, friction modifiers, antioxidants, rust inhibitors, foam inhibitors, and seal fixes. 5. The lubricating oil composition of claim 2, further comprising one or more additives selected from the group consisting of ashless dispersants, antiwear agents, viscosity index modifiers, friction modifiers, antioxidants, rust inhibitors, foam inhibitors, and seal fixes. 6. The lubricating oil composition of claim 5, wherein at east one of the one or more antiwear agents is zinc dithiophosphate. 7. The lubricating oil composition of claim 2, comprising at least about 50 ppm of boron, based on the total weight of the lubricating oil composition. 8. The lubricating oil composition of claim 2, wherein each of the one or more overbased borated alkaline earth metal alkyltoluene sulfonate detergents is derived from an alkyltoluene sulfonic acid, and wherein the alkyl group of the alkyltoluene sulfonic acid comprises about 10 to about 40 carbon atoms. 9. The lubricating oil composition of claim 8, wherein the alkyl group of the alkyltoluene sulfonic acid is a linear alkyl group. 10. A method of reducing wear in a diesel engine comprising operating said engine with the lubricating oil composition of claim 1. 11. A method of reducing corrosion in a diesel engine comprising operating said engine with the lubricating oil composition of claim 1. 12. A method of reducing wear in a diesel engine comprising operating said engine with the lubricating oil composition of claim 2. 13. A method of reducing corrosion in a diesel engine comprising operating said engine with the lubricating oil composition of claim 2.
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이 특허에 인용된 특허 (13)
Shanklin James R. ; Stachew Carl F., Alcohol borate esters and borated dispersants to improve bearing corrosion in engine oils.
Parc Guy (Rueil Malmaison FRX) Born Maurice (Nanterre FRX), Colloidal products containing boron and phosphorus, their preparation and their uses as lubricating additives.
Boffa, Alexander B., Methods and compositions for reducing wear in internal combustion engines lubricated with a low phosphorus content lubricating oil.
Hoornaert Pierre (Saint Pierre De Chandieu FRX) Rey Claude (Lyons FRX) Gallo Roger (Bouc Bel Air FRX) Belle Catherine (Marseille FRX), Process for the preparation of an overalkalinized additive containing a derivative of boron, the additive thus obtained.
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