摘要:
A lubricant additive concentrate containing (i) dispersant that is the polybutenyl succinimide reaction product of a polyamine and polybutenyl succinic anhydride (PIBSA) derived from polybutene having a number average molecular weight (M n ) of from 1300 to 2500 daltons and a terminal vinylidene content of at least 50% and maleic anhydride via an ene maleation process; (ii) overbased magnesium colloidal detergent having a total base number (TBN) of from 300 to 900 mg KOH/g; and (iii) organic friction modifier selected from hydroxyalkyl alkyl amines of C 14 to C 24 hydrocarbons, at least one hydroxyalkyl alkyl ether amines of C 13 to C 24 hydrocarbons, at least one alkyl ester amine derived from triethanol amine having a C 13 to C 24 hydrocarbyl substituent, at least one non-basic, fatty acid amide, or a mixture thereof; wherein the combined mass% of dispersant (i) and overbased magnesium colloidal detergent (ii) in said concentrate is from 15 to 50 mass%: the mass ratio of (i):(ii) is from 1:1 to 6:1; and the concentrate contains from 2 to 10 mass% of organic friction modifier (iii); the remainder of the concentrate being composed of base oil and additives other than dispersant (i), overbased magnesium colloidal detergent (ii) and organic friction modifier (iii).
摘要:
A low sulfur marine distillate fuel trunk piston diesel engine lubricating oil composition comprising (a) a major amount of a Group I base oil or a Group II base oil or mixtures thereof; (b) at least one or more detergents comprising at least one overbased salt of an alkyl-substituted hydroxybenzoic acid; and (c) a succinimide dispersant derived from polyalkylene having a number average molecular weight (Mn) of 1400-3000; wherein the succinimide dispersant is present at greater than 1.20 wt. % on an actives basis; and the TBN of the composition is less than 30 mg KOH/g.
摘要:
A lubricant oil composition for internal combustion engines with which further reduction of friction can be achieved to provide excellent fuel efficiency is provided. (A) A lubricant oil base oil having a kinematic viscosity at 100°C of 2.0 to 5.0 mm 2 /s; (B) a molybdenum-based friction modifier in an amount of 0.005 to 0.2 mass% in terms of the mass of the molybdenum relative to the total mass of the composition; (C) a metal-based detergent in an amount of 0.01 to 1 mass% in terms of the mass of the metal relative to the total mass of the composition; and (D) 0.01 to 10 mass% of at least one compound selected from amino acids having a C 6-24 alkyl, alkenyl, or acyl group, and/or derivatives of the amino acids.
摘要:
The invention relates to a lubricating oil composition for an internal combustion engine excellent in fuel saving property and heat resistance property, more specifically to a lubricating oil composition for an internal combustion engine containing a mixed base oil (AB) comprising a mixture of a base oil (A) being a mineral oil and/or a synthetic oil with a kinematic viscosity at 100°C of not more than 3.5 mm 2 /s and a base oil (B) being a mineral oil and/or a synthetic oil with a kinematic viscosity at 100°C of more than 3.5 mm 2 /s, wherein the ratio of the base oil (A) to the entire base oil is not more than 40 mass%, a calcium salicylate-based detergent (C) in 0.05 mass% to 0.5 mass% as a calcium amount based on the total amount of the composition, and a calcium sulfonate-based detergent (D) in 0.002 mass% to 0.2 mass% as a calcium amount based on the total amount of the composition.