摘要:
The disclosure provides a lubricant composition for lubricating an engine, a method for operating an engine and an additive concentrate. The lubricant composition includes a base oil of lubricating viscosity; one or more metal dialkyldithiophosphates having more than 75 mole percent of alkyl groups derived from 4-methyl-2-pentanol, and from about 0.1 to about 2.0 percent by weight of detergent derived from an alkyl phenol or sulfurized alkyl phenol based on a total weight of the lubricant composition. An amount of the one or more metal dialkyldithiophosphate in the lubricant composition ranges from about 0.01 to about 0.10 percent by weight phosphorus based on a total weight of the lubricant composition. The lubricant composition has a total a total base number (TBN) of about 5.0 to about 10.0.
摘要:
A multi-functional composition for use as an additive for fuels and lubricants. The composition includes an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture containing an aliphatic polyamine and an aromatic polyamine. The molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10. The amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent.
摘要:
A fully formulated lubricating oil, lubricated surface, and lubricant additive concentrates for lubricants providing improved lubricant characteristics. The lubricating oil composition has therein a dispersant mixture derived from a reaction product of polyalkylene compound, a carboxylic acylating agent, and a polyamine. The polyalkylene compound of at least one dispersant in the dispersant mixture has a number average molecular weight of at least about 1200 and at least one dispersant in the dispersant mixture contains boron such that a weight ratio of boron to nitrogen (B/N) in the dispersant mixture ranges from above about 0.25 to about 1.0.
摘要:
Polybutenyl substituted succinic acylating agents are formed by reacting (a) an acidic reactant represented by the general formulaR--CO--CH.dbd.CH--CO--R'wherein R and R' are independently --OH, --O--lower alkyl, a halogen atom, or taken together are a single oxygen atom, with (b) a polymer composed mainly or entirely of polyisobutene, at least 50% of the polyisobutene content of the polymer having an end group represented by the formula ##STR1##The mole ratio o9f acidic reactant: polymer is at least 1:1; and the reaction mixture is maintained under superatmospheric pressure during at least a substantial portion of the reaction period. The reaction rate is high, the yields of desired product are high, and despite the fact that superatmospheric pressures and elevated temperatures are used, the process forms only small amounts of tars or resinous co-products, even when employing as much as a 20% or more molar excess of maleic anhydride. Any unreacted acidic reactant such as maleic anhydride, maleic acid, fumaric acid, etc. can be, and preferably is, recovered from the reation mixture, and thus is available for use either as recycle to the process or for other uses. Inasmuch as chlorine is not used in the process, the expense and difficulties associated with handling chlorine on a plant scale are eliminated, and the product is less corrosive than corresponding products formed by use of chlorine.
摘要:
Polybutenyl substituted succinic acylating agents are formed by reacting (a) an acidic reactant represented by the general formulaR--CO--CH.dbd.CH--CO--R'wherein R and R' are independently --OH, --O-lower alkyl, a halogen atom, or taken together are a single oxygen atom, with (b) a polymer composed mainly or entirely of polyisobutene, at least 50% of the polyisobutene content of the polymer having an end group represented by the formula ##STR1## The mole ratio of acidic reactant:polymer is at least 1:1; and the reaction mixture is maintained under superatmospheric pressure during at least a substantial portion of the reaction period. The reaction rate is high, the yields of desired product are high, and despite the fact that superatmospheric pressures and elevated temperatures are used, the process forms only small amounts of tars or resinous co-products, even when employing as much as a 20% or more molar excess of maleic anhydride. Any unreacted acidic reactant such as maleic anhydride, maleic acid, fumaric acid, etc, can be, and preferably is, recovered from the reaction mixture, and thus is available for use either as recycle to the process or for other uses. Inasmuch as chlorine is not used in the process, the expense and difficulties associated with handling chlorine on a plant scale are eliminated, and the product is less corrosive than corresponding products formed by use of chlorine.
摘要:
A lubricant composition, lubricant concentrate and method for reducing engine deposits. The composition and method include a base oil of lubricating viscosity; an organo-molybdenum compound; a deposition reducing amount of a reaction product of an alkyl-substituted dicarboxylic acid compound selected from the group consisting of alkyl-substituted dicarboxylic acids, alkyl-substituted dicarboxylic acid anhydrides, and mixtures thereof, and a basic salt of aminoguanidine, in an amount sufficient to provide a product rich in alkyl bis-3-amino-1,2,4-triazole; and optionally a phenate detergent. The lubricant composition and method provide engine deposits that are less than an amount of engine deposits in the absence of component (c) and/or optional component (d).
摘要:
Lubricating oil compositions are provided that inhibit coolant-induced oil filter plugging in heavy-duty diesel engines, and particularly CJ-4 and CI-4 PLUS compliant lubricating oil compositions that inhibit coolant-induced oil filter plugging in exhaust gas recirculation or recycle engines.
摘要:
A process for preparing, in high yield, a sulfurized olefinic product for use in lubricating oil compositions having a chlorine content of less than about 1000 ppm, a sulfur content of from about 40 to about 50 weight percent and a viscosity at 100.degree. C. of within the range of from about 5 to about 15 cSt.
摘要:
A multi-functional composition for use as an additive for fuels and lubricants. The composition includes an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture containing an aliphatic polyamine and an aromatic polyamine. The molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10. The amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent.
摘要:
There is disclosed a lubricant composition comprising major amount of a base oil and a minor amount of an additive composition comprising (i) a triazole compound substituted with an aryl moiety; (ii) a nitrogen-containing compound represented by the formula (I): wherein R1 and R2 are each independently selected from the group consisting of at least one aryl moiety comprising from about 6 to about 30 atoms, hydrogen, halogen, hydroxy, hydrocarbyl, substituted hydrocarbyl, amino, amido, phosphoro, and sulfono; and (iii) a sulfurized compound.