The present application relates to biodegradable zero drip lubricating oil composition. The lubricating oil composition comprises a) an oil soluble polyalkylene glycol polymer; b) a vegetable base stock; and c) organic solvent excluding alcohol, wherein the oil soluble poly alkylene glycol and the vegetable base stock are present in a weight ratio from 1:2.6 to 1:8. The biodegradable lubricating oil compositions have high film strength, high load carrying capability, zero anti-drip property and maximum penetrability in the chain linkages, for application in roller chains and driving power trains having complex chain linkages.

This disclosure describes an ashless lubricant additive. The additive is a tertiary amine-containing compound having the following structure:

##STR00001##

where each R.sup.1 and R.sup.5 is independently a linear or branched-chain monovalent hydrocarbyl group having two to about twenty carbon atoms, where each R.sup.2, R.sup.3, and R.sup.4 is independently a hydrogen, a linear or branched-chain monovalent hydrocarbyl group having one to about twenty carbon atoms wherein at least one of R.sup.2, R.sup.3, and R.sup.4 is hydrogen, each m is independently from 0 to 2, each p is independently from 0 to 2, for each cylic moiety m+p is from 2 to 4, and each n is independently from 1 to 6.

A polyalkylene glycol-based compound of formula (1):

##STR00001##

may be one in which R.sup.1 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, or a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms; R.sup.2 is a monovalent hydrocarbon group having 1 to 32 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms, a monovalent acyl group having 2 to 32 carbon atoms, a monovalent oxygen-containing hydrocarbon group having 2 to 32 carbon atoms, or a hydrogen atom; R.sup.3 is a divalent hydrocarbon group having 4 carbon atoms; R.sup.4 is a divalent hydrocarbon group having 2 or 3 carbon atoms; m and n are respectively numbers between 1 and 40 and 0 and 20; and m/(m+n)≥0.5.

A lubricating oil composition for an internal combustion engine has a HTHS viscosity at 150° C. of 2.55-2.84 mPa.Math.s and includes: (A) a lubricating base oil including (a) mineral base oil(s) and/or (a) synthetic base oil(s), and having a kinematic viscosity at 100° C. of 3.8-4.6 mm.sup.2/s; (B) 1000-2000 mass ppm, in terms of metal content, of a metallic detergent including (a) metal salicylate detergent(s), and delivering 10 mmol/kg of total salicylate soap base per kilogram of the composition; (C) 1.0 to 4.0 mass % of a comb-shaped poly(meth)acrylate having a Mw of 350,000-1,000,000 and a PDI of ≤4.0; and (D) 100-1000 mass ppm, in terms of nitrogen, of a succinimide dispersant including (i) (a) non-modified succinimide dispersant(s) and/or (ii) (a) boric acid-modified succinimide dispersant(s), wherein the (i) and the (ii), in total, deliver 70 mass % of total nitrogen content of the component (D).

A lubricating oil composition for an internal combustion engine has a HTHS viscosity at 150° C. of 2.55-2.84 mPa.Math.s and includes: (A) a lubricating base oil including (a) mineral base oil(s) and/or (a) synthetic base oil(s), and having a kinematic viscosity at 100° C. of 3.8-4.6 mm.sup.2/s; (B) 1000-2000 mass ppm, in terms of metal content, of a metallic detergent including (a) metal salicylate detergent(s), and delivering 10 mmol/kg of total salicylate soap base per kilogram of the composition; (C) 1.0 to 4.0 mass % of a comb-shaped poly(meth)acrylate having a Mw of 350,000-1,000,000 and a PDI of ≤4.0; and (D) 100-1000 mass ppm, in terms of nitrogen, of a succinimide dispersant including (i) (a) non-modified succinimide dispersant(s) and/or (ii) (a) boric acid-modified succinimide dispersant(s), wherein the (i) and the (ii), in total, deliver 70 mass % of total nitrogen content of the component (D).

A number of different branched hydrocarbon compounds (formula I) having a star-like configuration (S) are prepared from renewable oils containing fatty acids or derivatives containing fatty acids. The branched hydrocarbon compounds may be isolated individually or in mixtures, and may be used as part of base oils, such as renewable base oils (RBOs). A process for preparing the branched hydrocarbon compounds of formula I involve conditions that favour a trimerisation reaction followed by hydrotreating conditions. The compounds of formula I may be made by catalytically treating renewable material in a process, and the compounds have desirable qualities relating to lubrication, cold flow as well as having a low Noack volatility.

Hydrotreatment of biological oil is disclosed for producing renewable base oil and a diesel oil from low value biological oils. Low value biological oils containing free fatty acids and fatty acid esters can be processed into a renewable base oil and a renewable diesel oil in an efficient manner by first separating at least part of the free fatty acids from the feedstock and then processing separately this free acid feed in a ketonisation reaction followed by hydrodeoxygenation and hydroisomerisation reactions to yield a renewable base oil stream. The remaining free fatty acid depleted feed is processed in a separate hydrodeoxygenation and hydroisomerisation step to yield a renewable diesel stream.

A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; (B) a succinimide ashless dispersant in an amount of 0.005 to 0.25 mass % in terms of nitrogen on the basis of the total mass of the composition; (C) a nitrogen-containing antioxidant in an amount of 0.005 to 0.15 mass % in terms of nitrogen on the basis of the total mass of the composition; and optionally (D) a nitrogen-containing friction modifier in an amount of no more than 0.03 mass % in terms of nitrogen on the basis of the total mass of the composition, wherein a total content of any metallic detergent is 0.005 to 0.03 mass % in terms of metal on the basis of the total mass of the composition.

Various liquid and semisolid lubricant compositions are provided, in particular lubricant compositions containing oil from the seeds of the Brassicaceae Orychophragmus violaceus, preferably those that have been esterified with one or more fatty acids such as palmitoleic acid, oleic acid, linoleic acid, lauric acid, palmitic acid, stearic acid, or a combination thereof. In various aspects, lubricant compositions are provided that include a petroleum or a synthetic base oil and about 40% or less by weight of a liquid lubricant composition containing oil from the seeds of the Brassicaceae Orychophragmus violaceus, preferably those that have been esterified with one or more fatty acids. In various aspects, semisolid lubricant composition are provided containing an emulsion of (i) a thickener and (ii) an oil from the seeds of the Brassicaceae Orychophragmus violaceus, preferably those that have been esterified with one or more fatty acids.

The invention describes a traction drive fluid that comprising a carrier and a particulate solid. The carrier has a boiling point of greater than at least about 100° C., and a melting point of below about 10° C., both being measured at 1 atm pressure. The particulate solid consists of a plurality of laminae. The laminae are homogeneously distributed through the carrier.