摘要:
A lubricating composition includes at least one base oil, at least one borated dispersant, at least two antioxidants selected from amine antioxidants, phenolic antioxidants substituted with one or more linear or branched alkyl groups having from 1 to 30 carbon atoms, and mixtures thereof, and at least one phosphite polymer having the formula (I) wherein: —each of the R1, R2, R3 and R4 can be independently selected from the C1-C20 alkyl, C3-C22 alkenyl, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers and Y—OH groups; —Y is selected from C2-C40 alkylene, C2-C40 alkyl lactone, —R7—N(R8)—R9— groups, in which R7, R8 and R9 are independently selected from hydrogen, C1-C20 alkyl, C3-C22 alkenyi, C6-C40 cycloalkyl, C7-C40 cycloalkenyl, C1-20 methoxy alkyl glycol ethers; —m is an integer from 2 to 100; —n is an integer from 1 to 1000.
摘要:
A lubricating oil composition comprising greater than 50 wt. % of a base oil of lubricating viscosity; an amount of one or more ester(s) of a polyhydric alcohol; an amount of one or more boron-containing dispersant(s); wherein a ratio of the amount of the one or more ester(s) of a polyhydric alcohol in weight percent provided to the lubricating oil composition, to an amount of boron in weight percent provided by the one or more boron-containing dispersant(s), based on the total weight of the lubricating oil composition is less than 40. The lubricating oil composition has improved corrosion performance in an engine or other mechanical components lubricated with the lubricating oil.
摘要:
A lubricating oil composition comprising greater than 50 wt. % of a base oil of lubricating viscosity; an amount of one or more ester(s) of a polyhydric alcohol; an amount of one or more boron-containing dispersant(s); wherein a ratio of the amount of the one or more ester(s) of a polyhydric alcohol in weight percent provided to the lubricating oil composition, to an amount of boron in weight percent provided by the one or more boron-containing dispersant(s), based on the total weight of the lubricating oil composition is less than 40. The lubricating oil composition has improved corrosion performance in an engine or other mechanical components lubricated with the lubricating oil.
摘要:
Hydrogenated polymers with a radial structure having a core made up of calixarenes of the general formula (I), to the core of which is linked a number P of hydrogenated linear polymer segments selected from: —hydrogenated homopolymers or copolymers of conjugated dienes; or —hydrogenated copolymers of said conjugated dienes and monoalkenyl arenes, and —mixtures thereof said formula (I) in which: —R1, R2, R3 and R4 are independently selected from hydrogen; a group containing carbon and hydrogen; a group also containing heteroatoms in addition to carbon and hydrogen; a group also containing silicon in addition to carbon, hydrogen and heteroatoms; —one of the two substituents R5 and R6 is hydrogen, while the other may be hydrogen or alkyl, with a number of carbon atoms between 1 and 6, preferably methyl and ethyl; —n is an integer in the range between 4 and 16.
摘要:
The passage of a container along a conveyor is lubricated by applying to the container or conveyor a mixture of a water-miscible silicone material and a water-miscible lubricant. The mixture can be applied in relatively low amounts, to provide thin, substantially non-dripping lubricating films. In contrast to dilute aqueous lubricants, the lubricants of the invention provide drier lubrication of the conveyors and containers, a cleaner conveyor line and reduced lubricant usage, thereby reducing waste, cleanup and disposal problems.
摘要:
The passage of a container along a conveyor is lubricated by applying to the container or conveyor a mixture of a water-miscible silicone material and a water-miscible lubricant. The mixture can be applied in relatively low amounts, to provide thin, substantially non-dripping lubricating films. In contrast to dilute aqueous lubricants, the lubricants of the invention provide drier lubrication of the conveyors and containers, a cleaner conveyor line and reduced lubricant usage, thereby reducing waste, cleanup and disposal problems.
摘要:
The invention relates to a method for adjusting the friction coefficient of the surface of a metallic workpiece by applying and hardening a single-layer or multi-layer coating having a boundary surface facing toward the workpiece and having a boundary surface facing away from the workpiece, wherein one or more base coats each having at least one binding agent and metallic particles, is/are applied in layers, and at least one of the base coats has at least one lubricant. For proposing a possibility for the efficient use of lubricant in anti-corrosion coatings, it is provided that the friction coefficient is adjusted by a lubricant concentration and/or a lubricant composition on the boundary surface facing toward the workpiece that is different from that on the boundary surface facing away from the workpiece
摘要:
The passage of a container along a conveyor is lubricated by applying to the container or conveyor a mixture of a water-miscible silicone material and a water-miscible lubricant. The mixture can be applied in relatively low amounts, to provide thin, substantially non-dripping lubricating films. In contrast to dilute aqueous lubricants, the lubricants of the invention provide drier lubrication of the conveyors and containers, a cleaner conveyor line and reduced lubricant usage, thereby reducing waste, cleanup and disposal problems.
摘要:
A lubricating composition, especially suitable for use in internal combustion engines, comprises a major proportion by weight of a lubricating oil and a minor proportion by weight, sufficient to enhance the detergent characteristics of the composition, of an additive consisting of a predominantly aliphatic or cycloaliphatic macromolecule, which macromolecule comprises up to 99,9% by weight of oil-solubilizing aliphatic or cycloaliphatic hydrocarbon groups and at least 0,1% by weight of one or more non-carboxylic-ester-linked polyglycol groups each having at least five alkylene oxide units with from two to seven carbon atoms in each alkylene oxide unit, said macromolecule having an average molecular weight of at least 50,000 and a solubility in the lubricating oil of at least 0,5% by weight. The lubricating oil may be a mineral oil, a synthetic hydrocarbon (e.g. a hydrogenated hydrocarbon, polymer, a chlorinated alkane/aryl compound condensation product or a high molecular weight alkylated hydrocarbon such as an alkylated wax), an alkylene oxide polymer or an etherification and/or esterification product thereof, or an ester such as di(2-ethylhexyl) sebacate, tricresyl phosphate or a silicate ester. The macromolecular additive may be a copolymer of (A) an oilsolubilizing olefin of 2-30 carbon atoms or a monomeric compound having a polymerizable ethylenic linkage and containing a hydrocarbyl group of 4-30 aliphatic or cycloaliphatic carbon atoms (e.g. an alkenyl ether, an alkenyl ester of a monocarboxylic acid, or an ester of an unsaturated mono- or di-carboxylic acid), (B) a noncarboxylic-ester-linked polyglycol monomeric compound having a polymerizable ethylenic linkage and a polyglycol group containing at least 5 alkylene oxide units in which each alkylene oxide unit has 2-7 carbon atoms and, optionally, (C) a monomeric polar compound having a polymerizable ethylenic linkage and a polar group (e.g. -COOH, -CONH2, -CONH-ROH or -CONHRNH2 where R is alkylene, carboxyl groups esterified with hydroxy- or amino-substituted alkyl groups, heterocyclic nitrogenous groups, epoxy groups and cyano groups). In monomer (B), the polyvalent linking group or atom between the group bearing the polymerizable ethylenic linkage and the polyglycol group may be -0-, -5-, or a carbonyl, sulphonyloxy, iminocarbonyl, ureylene, iminocarbonyloxy, phosphonyloxy or imino group. Specific examples of monomers (B) are polyglycol amides of unsaturated mono- or dicarboxylic acids and vinyl or allyl monoethers of polyglycols. However, methods other than copolymerization may be used in preparing the macromolecular additive. Specific macromolecular additives mentioned as suitable for addition to mineral lubricating oil are (i) the copolymer of dodecyl methacrylate and methacrylamide-initiated or allylamine-initiated polyethylene glycol, (ii) the copolymer of dodecyl methacrylate and polyethylene glycol monovinyl ether, (iii) the phosphonate product formed by reacting chlorophosphonylated polyisobutylene with the dodecyl mono-ether of polyethylene glycol and (iv) the sulphonate product formed by reacting chlorosulphonylated polyisobutylene with the dodecyl mono-ether of polyethylene glycol. The lubricant composition may contain additional ingredients such as pour point depressants, oiliness and extreme pressure agents, antioxidants and corrosion inhibitors (e.g. P2S5-treated pinene and divalent metal salts of organic dithiophosphoric acids), blooming agents, thickening agents, viscosity improvers (e.g. alkyl methacrylate polymers or butene polymers) or auxiliary detergents and antiwear agents (e.g. alkaline earth phenates of higher alkyl phenols).ALSO:An additive for lubricating oils (see Group III) consists of a predominantly aliphatic or cycloaliphatic macromolecule which comprises up to 99,9% by weight of oil-solubilizing aliphatic or cycloaliphatic hydrocarbon groups and at least 0,1% by weight of one or more non-carboxylic-ester-linked polyglycol groups each having at least 5 alkylene oxide units with 2-7 carbon atoms in each alkylene oxide unit, said macromolecule having an average molecular weight of at least 50,000 and a solubility in the lubricating oil of at least 0,5% by weight. The additive may be a copolymer of (A) an oil-solubilizing olefin of 2-30 carbon atoms or a monomeric compound having a polymerizable ethylenic linkage and containing a hydrocarbyl group of 4-30 aliphatic or cycloaliphatic carbon atoms (e.g. an alkenyl ether, an alkenyl ester of a monocarboxylic acid or an ester of an unsaturated mono- or di-carboxylic acid), (B) a non-carboxylic-ester-linked polyglycol monomeric compound having a polymerizable ethylenic linkage and a polyglycol group containing at least 5 alkylene oxide units in which each alkylene oxide unit has 2-7 carbon atoms and, optionally, (C) a monomeric polar compound having a polymerizable ethylenic linkage and a polar group (e.g. -COOH, -CONH2, -CONHROH or -CONHRNH2 where R is alkylene, carboxyl groups esterified with hydroxy- or amino-substituted alkyl groups, heterocyclic nitrogenous groups, epoxy groups and cyano groups). In monomer (B), the polyvalent linking group or atom between the group bearing the polymerizable ethylenic linkage and the polyglycol group may be -O-, -S-, or a carbonyl, sulphonyloxy, iminocarbonyl, ureylene, imino carbonyloxy, phosphonyloxy or imino group. Specific examples of monomers (B) are polyglycol amides of unsaturated mono- or di-carboxylic acids and vinyl or allyl monoethers of polyglycols. However, methods other than copolymerization may be used in preparing the macromolecular additive. In the examples, the preparation is described of (i) the copolymer of dodecyl methacrylate and methacrylamide-initiated or allylamine-initiated polyethylene glycol, (ii) the copolymer of dodecyl methacrylate and polyethylene glycol monovinyl ether, (iii) the phosphonate product formed by reacting chlorophosphonylated polyisobutylene with the dodecyl mono-ether of polyethelene glycol and (iv) the sulphonate product formed by reacting chlorosulphonylated polyisobutylene with the dodecyl monoether of polyethylene glycol.