摘要:
A lubricant composition suitable for lubricating an internal combustion engine comprises: (a) an oil of lubricating viscosity having a viscosity index of at least 105 and a kinematic viscosity at 100 C of less than 7 mm2s-1; (b) 0.01 to 2 weight percent of a friction modifier represented by the structure [I]; (c) 0.5 to 4 weight percent of a poly(meth)acrylate viscosity modifier polymer; (d) 0 to 500 parts per million by weight of molybdenum in the form of an oil-soluble molybdenum compound; and (e) 0 to 200 parts per million by weight of boron in the form of an oil-soluble boron compound.
摘要:
A lubricant composition comprising an oil of lubricating viscosity, 0.1 to 2 percent by weight of a Mannich dispersant, and 0.1 to 2 percent by weight of a succinimide dispersant, wherein the succinimide dispersant provides at least about 40 parts per million by weight of nitrogen atoms to the lubricant composition, provides cleanliness to a two-stroke cycle engine.
摘要:
A lubricant composition comprising an oil of lubricating viscosity, an amino-functionalized acrylic or methacrylic-containing polymer, comprising about 2 percent to about 8 percent by weight of an amine moiety bearing a tertiary amino group, attached to said polymer through an ester, amide, or imide linkage; and a nitrogen-containing dispersant, provides reduced friction to an internal combustion engine and improved fuel economy.
摘要:
A composition of matter comprising an amine acylated with a hydrocarbyl group substituted carboxylic acylating agent containing an average of from 1.3 to 1.6 groups derived from α,β-unsaturated carboxylic compounds per Mn of the hydrocarbyl group, wherein the hydrocarbyl group has Mn determined by GPC ranging from 1500 to 3000, the amine comprises polyamine bottoms and said acylated amine has total base number (TBN) ranging from 17 to 35. A method for preparing the composition, lubricating oils containing the composition and, in another embodiment, lubricating oil compositions of this invention further comprising a metal overbased sulfonate detergent.
摘要翻译:包含用烃基取代的羧酸酰化剂酰化的胺的物质组合物,其每平均含有衍生自α,β-不饱和羧酸化合物的平均1.3至1.6个基团,每个烃基,其中烃基具有通过GPC测定为1500至3000的 M n N,所述胺包括多胺底物,并且所述酰化胺具有总碱 编号(TBN)为17至35.一种制备组合物的方法,含有该组合物的润滑油,在另一个实施方案中,还包含金属高碱性磺酸盐清净剂的本发明的润滑油组合物。
摘要:
A lubricating composition contains an oil of lubricating viscosity and 0.5 to 10 percent by weight of a poly(meth)acrylate viscosity modifier polymer comprising (i) 15 weight percent to 35 weight percent monomer units of methyl(meth)acrylate, (ii) 0 to 10 weight percent monomer units of one or more C2-C6 alkyl(meth)acrylates, (iii) 50 to 85 weight percent monomer units of one or more C8-C30 alkyl(meth)acrylates, and (iv) 0 to 10 weight percent monomer units of one or more nitrogen-containing monomers. Such a lubricating composition exhibits a high viscosity index and may impart improved fuel economy to an internal combustion engine.
摘要:
A lubricant suitable for lubricating a two-stroke cycle engine which is fueled with a liquid fuel having a volatility less than that of gasoline comprises an oleaginous synthetic ester, a normally liquid solvent having a kinematic viscosity of less than about 5 or 2 mm2/s at 100° C. and a nitrogen-containing dispersant bearing a hydrocarbyl group of at least 26 carbon atoms and having a nitrogen content of at least 4 percent by weight. The nitrogen content of the lubricant is at least about 0.3 percent by weight.
摘要:
This invention relates to a low-viscosity lubricating oil and functional fluid compositions, comprising: a major amount of an oil having a kinematic viscosity of up to about 4 cST at 100.degree. C.; and a minor antiwear amount of (A) a compound represented by the formula R.sup.1 R.sup.2 N--C(X)S--(CR.sup.3 R.sup.4).sub.a Z (A-I) wherein in Formula (A-I), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or hydrocarbyl groups, provided that at least one of R.sup.1 and R.sup.2 is a hydrocarbyl group; X is O or S; a is zero, 1 or 2; and Z is a hydrocarbyl group, a hetero group, a hydroxy hydrocarbyl group, an activating group, or a --(S).sub.b C(X)--NR.sup.1 R.sup.2 group wherein b is zero, 1 or 2; provide that when a is 2, Z is an activating group; and when a is zero, Z can be an ammonium, amine or metal cation. In one embodiment this composition further comprises (B) a phosphorus compound.
摘要:
The invention provides a lubricating composition containing (a) 0.001 wt % to 15 wt % of a polymer with radial or star architecture; (b) an overbased detergent; (c) a dispersant; and (d) an oil of lubricating viscosity. The invention further provides a method for lubricating a mechanical device with the lubricating composition.
摘要:
A lubricating composition comprising an oil of lubricating viscosity, 1 to 1000 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material, and at least one additional lubricant additive provides beneficial effects on properties such as deposit control, oxidation, and filterability in engine oils.
摘要:
A lubricating composition comprising an oil of lubricating viscosity, 1 to 1000 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material, and at least one additional lubricant additive provides beneficial effects on properties such as deposit control, oxidation, and filterability in engine oils.