529results about "Thickeners" patented technology

Disclosed herein are solid-liquid bi-phase lubricating devices that can include a cuboidal shaped stick with at-least one cylindrical or cuboidal shaped hollow core running through entire or partial length of the stick. The cuboidal shaped stick can include a solid polymer-based composite while the inner space is filled with a semi-fluid grease lubricant. The solid polymer-based composite can include one or more polymers, filler materials, corrosion inhibitors, plasticizers, and additives. The grease lubricant can include lithium, lithium-complex, aluminum-complex, calcium-sulphonate complex, bentone-thickened grease, and mixtures thereof and have an NLGI consistency grade≥1. The lubricating devices can be used for friction reduction of mechanical components involving two or more contacting surfaces in relative motion, such as a steel wheel flange-rail contact interface of transit and freight rail transport systems.

A lubricating grease for electric vehicle applications includes thickener 6% by weight (wt. %) to 12 wt. %, lubricating oil 57 wt. % to 92.98 wt. %, and surface-active ester 1 wt. % to 10 wt. %. The lubricating grease also includes additives including friction reducer and modifier 0.1 wt. % to 5 wt. %, anti-wear agent 0.1 wt. % to 5 wt. %, and a balance of extreme pressure agent, oxidation inhibitor, and corrosion inhibitor.

The invention provides high-temperature-resistant, mute and long-life bearing lubricating grease and a preparation method of the high-temperature-resistant, mute and long-life bearing lubricating grease, and belongs to the technical field of lubricating materials. The composite additive comprises a special antioxidant, a special anti-wear reagent at extreme pressure, an anti-rust preservative, a microencapsulation self-repairing agent and a noise inhibitor, and a rare earth organic complex can be further introduced as a high-temperature stabilizer according to needs, so that multi-performance synergy is realized. The comprehensive adaptability of the lubricating grease under the high-temperature-resistant condition is remarkably improved, the service life of a bearing is prolonged, energy consumption and noise are reduced, and the lubricating grease has outstanding technical advancement and application and popularization value.

What is provided is a fluorine-containing ether compound represented by the following formula.R1—CH2—R2—CH2—OCH2CH(OH)CH2O—CH2—R3—CH2—R4 (In the formula, R2 and R3 are perfluoropolyether chains, and R1 and R4 are terminal groups having two or three polar groups, in which individual polar groups are bound to different carbon atoms and the carbon atoms to which the polar groups are bound are bound to each other via a linking group having a carbon atom to which the polar groups are not bound).

Provided are: a grease composition capable of preventing grease leakage and suppressing heat generation inside a bearing even under a high-speed rotation condition; and a grease-sealed bearing in which the grease composition is enclosed. A grease composition 7 is enclosed in a rolling bearing 1 and comprises a base oil and a thickener, wherein: the base oil has a kinematic viscosity at 40°C of less than 40 mm2 / s; the maximum storage elastic modulus at a temperature of 25°C and a frequency of 1 Hz is 10000-50000 Pa; the thickener is a urea compound or barium soap; and the content of the thickener with respect to the total amount of the base oil and the thickener is 5-30% by mass.

Provided is a grease composition, including: a molybdenum compound represented by the general formula (1); a sulfurized olefin; and a base oil: where R1 to R4 each independently represent an alkyl group having 4 to 18 carbon atoms, and X1 to X4 each independently represent an oxygen atom or a sulfur atom.

A grease composition that includes at least an oil-based medium, a thickener, and a fullerene-like nano-structure. The fullerene-like nano-structure includes a plurality of layers each comprised of a metal chalcogenide composition has a molecular formula of MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof.

The present invention provides a grease composition and an axle bearing in which the grease composition is sealed.SOLUTION: The grease composition of the present invention contains a base oil, a thickener, and an additive, the additive contains an organic metal salt of a divalent metal and an inorganic metal salt of a divalent metal, the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 1.00% by mass or more based on the grease composition, and the metal content of the organic metal salt with respect to the total mass of the metal content of the organic metal salt and the metal content of the inorganic metal salt is 0.20 or more on a mass basis.SELECTED DRAWING: None

Disclosed is a grease composition which contains a base oil (A) and a thickening agent (B), wherein: the base oil (A) includes one or more components selected from the group consisting of the component (A1) and the component (A2) described below; and the thickening agent (B) includes one or more components selected from the group consisting of the component (B1) and the component (B2) described below. Component (A1): an ester of a polyol (A11) having 3 to 6 hydroxyl groups and a branched fatty acid (A12) having 14 to 20 carbon atoms Component (A2): an alkylnaphthalene that has a 3% mass loss temperature of 450°C or higher in gas chromatography distillation in accordance with ASTM-D7500 Component (B1): melamine cyanurate Component (B2): pre-made urea

The object of the invention is a method for the production of lithium complex soap lubricating greases or lithium-calcium complex soap lubricating greases and corresponding lubricating greases produced by this process and their use in slide and rolling bearings.

Provided is a grease composition containing a base oil (A), hydrophilic nanofibers (B) having a roughness (d) of 1 nm to 500 nm, and particles (C) having a structure in which the hydrophilic nanofibers (B) are one or more types selected from the group consisting of cellulose nanofibers (B1) and modified cellulose nanofibers (B2), the particles (C) having a hydrophobic group on the outermost surface of the hydrophilic matrix structure, and having a hydrophobic group on the outermost surface of the hydrophilic matrix structure. In the grease composition, the average particle diameter of the particles (C) is 1 nm to 500 nm, and the grease composition has an appropriate oil separation degree and excellent water resistance despite the use of hydrophilic nanofibers.

The invention relates to a forming lubricant for ferrous materials, in particular for forming steel. According to the invention, the forming lubricant comprises at least one mineral having a layered structure and an agent for modifying the layered structure. Advantageously, the mineral is swollen, delaminated, and / or exfoliated by means of the modifying agent. The modifying agent is or preferably comprises a surfactant, which preferably comprises a soap and / or an amine. In one embodiment of the invention, the surfactant is a water-soluble soap, preferably an alkali or alkaline earth salt of a fatty acid, which preferably has a chain length of at least ten carbon atoms. The mineral is advantageously a layered silicate, preferably kaolin or a mineral of the mica group. The invention further relates to a process for producing the forming lubricant and a molded body coated with the forming lubricant.

The marine diesel engine lubricating oil composition contains (a) at least 40 wt.% of an oil having a lubricating viscosity with a kinematic viscosity at 100 °C of 4.0 to less than 8.5 mm2 / s; and (b) one or more olefin copolymers having a number average molecular weight of 30,000 to 120,000. The marine lubricating oil composition has a TBN exceeding 30 mg KOH / g. The marine diesel lubricating oil composition is a monograde lubricating oil composition that meets the specifications of SAE J300 requirements revised in January 2015 for SAE30, SAE40, SAE50, or SAE60 monograde lubricating oils.

A grease composition for outboard constant velocity joints, comprising (a) a diurea-based thickener and (b) a base oil containing a synthetic oil and having a kinematic viscosity at a temperature of -20°C measured according to JIS K 2283 of 3,000 to 20,000 mm2 / s.

The present disclosure provides a grease composition containing an ashless phosphonate mixture, the ashless phosphonate mixture consisting of an ashless phosphonate mixture of a cyclic phosphonate species and an oligomeric phosphonate species. The grease composition also includes a metallic soap thickener. The grease compositions disclosed herein exhibit improved antiwear protection under very harsh conditions and loads.

The invention relates to a method for lubricating and cooling the powertrain of an electric vehicle, said method comprising: a) Providing at least one powertrain component at least partially coated with one or more layers of electrically insulating polymer, b) Contacting said powertrain component of step a) with an aqueous lubricating composition comprising at least one thickening polymer, c) Operating said powertrain component, said at least one partially coated powertrain component being selected from one or more components including an electric motor, a battery, or power electronics. Abstract: Figure 1.

This patent application relates to the use of non-fluorinated aromatic polymers as additives in fluorinated lubricants.

To provide a lubricant composition suitable for improving valve train wear in medium and / or heavy duty diesel engines.SOLUTION: A medium and / or heavy duty diesel engine crankcase lubricant comprises: one or more base oils with lubricating viscosity; and an antiwear system providing 500 ppm or less of phosphorus and / or 500 ppm or less of zinc from one or more overbased dihydrocarbyl dithiophosphate zinc compounds containing hydrocarbyl groups bonded to a phosphorus atom by an oxygen linker, wherein the hydrocarbyl groups of the antiwear system are provided from secondary alcohols or a combination of secondary alcohols and primary alcohols, the hydrocarbyl groups have an average branching index of 0.72 or less, at least about 50 wt.% of the hydrocarbyl groups are derived secondary alcohols, and the one or more overbased dihydrocarbyl dithiophosphate zinc compounds of the antiwear system have a zinc to phosphorus ratio of less than about 1.12:1.SELECTED DRAWING: None

Provided is a rolling bearing with stable sealing properties. This rolling bearing comprises inner and outer rings (2, 3), a plurality of rolling elements, and a contact-type seal member (6) that closes a bearing space between the inner and outer rings (2, 3). The seal member (6) is provided with a seal collapse suppression means (St), a grease flow suppression means (GS), and a radial change amount reduction means (Rcr). The seal collapse suppression means (St) keeps an inner peripheral side portion (13) of the seal member (6) from collapsing inward in the axial direction. The grease flow suppression means (GS) suppresses the flow of grease from the inner peripheral surface of an auxiliary lip (16) to the inner-diameter-side tip of a main lip (15), and brings the main lip (15) into a desired contact state with a seal groove (7). The radial direction change amount reduction means (Rcr) reduces the radial direction change amount of the main lip (15) to a predetermined value or less within the range of an interference fit.

A marine engine lubricating oil composition comprising: (a) at least 40% by weight of an oil of lubricating viscosity having a kinematic viscosity at 100 DEG C of from 4.0 to less than 8.0 mm2 / s; and (b) one or more polyisobutylene thickeners having a number average molecular weight of from 400 to 6,000 Daltons. The marine lubricating oil composition has a TBN of less than 70 mg KOH / g. The marine lubricating oil composition is a single-stage lubricating oil composition which meets the requirements of the SAE J300 standard revised in January 2015 on SA E 20, SAE 30, SAE 40, SAE 50 or SAE 60 single-stage lubricating oil.

The invention relates to the field of lubricants, and discloses a compound and a preparation method and application thereof, and lubricating grease and a preparation method thereof. The application refers to application of the compound with the structure as shown in the formula (I) in thickening lubricating grease and / or improving the dropping point of the lubricating grease. The compound can be used as a thickening agent, meanwhile, the dropping point of the lubricating grease can be improved, the abrasion resistance, the oxidation resistance and the like of the calcium-based lubricating grease are also obviously improved, and the comprehensive performance of the lubricating grease containing the compound is more excellent.

A grease composition for outboard constant velocity joints includes (a) a diurea-based thickener and (b) a base oil containing a synthetic oil and having a kinematic viscosity at a temperature of −20° C. measured according to JIS K 2283 of 3.000 to 20.000 mm2 / s.

To provide a lubricating grease composition that can achieve suppression of oil release while maintaining low torque and good muddy water resistance in a sliding portion between a rubber element and a metallic component.SOLUTION: A lubricating grease composition comprises a base oil, a thickener, and a solid lubricant, wherein the content of the thickener is 2 wt.% or more and 15 wt.% or less relative to the overall weight of the lubricating grease composition, the solid lubricant includes melamine isocyanurate, and the content of the solid lubricant is 10 wt.% or more and 50 wt.% or less relative to the overall weight of the lubricating grease composition.SELECTED DRAWING: None

The invention provides a polyamide lubricating grease thickening agent. The polyamide lubricating grease thickening agent has a structure according to a formula I: (MCA-DA-) (PCA-DA) y-PCA-(DA-PCA) y (-DA-MCA) (I). In formula I, at each occurrence, PCA is independently a reacted polycarboxylate, at each occurrence, MCA is independently a reacted monocarboxylate, at each occurrence, DA is independently a reacted n-alkyl diamine, and y is a 0 or a non-zero integer. In addition, in Formula I, the polyamide grease thickener has a weight average molecular weight in the range of from about 450 g / mol to about 2600 g / mol. Further, in Formula I, the structure comprises at least 4 amide bonds and at least two internal aromatic moieties are disubstituted in the para-position.

A grease composition comprising:(i) a mineral base oil containing one or more of fatty ammonium carboxylate salts of formula (I),wherein R1 is selected from C12 to C20 saturated or unsaturated, branched or straight-chain hydrocarbyl groups; X is selected from NH, +NH2 and N—(R4)—NH3+; R2 and R4 are independently selected from C2 to C8 saturated or unsaturated, branched or straight chain hydrocarbyl groups, and may be the same or different; R3 is selected from C12 to C26 saturated or unsaturated, branched or straight-chain hydrocarbyl groups; and n is 1 or 2; and(ii) a simple lithium soap thickener,wherein said lubricating grease composition is prepared by a process comprising the steps of combining the mineral base oil with the one or more fatty ammonium carboxylate salts of formula (I) and then thickening said base oil fatty ammonium carboxylate salt mixture with the simple lithium soap thickener.

To provide a grease composition having low torque.SOLUTION: A grease composition comprises a base oil (A) and a thickener (B), wherein when a minor axis and a major axis of the thickener (B) in the grease composition are measured using a dielectric constant observation system of a scanning electron microscope, an aspect ratio (minor axis / major axis) of the thickener (B) is less than 0.23.SELECTED DRAWING: None

The invention relates to a lubricating oil viscosity index improver and a lubricating oil composition comprising the same. More specifically, provided is a lubricating oil viscosity index improver comprising a liquid alpha-olefin copolymer in which ethylene and an alpha-olefin monomer having 3 or more carbon atoms are copolymerized, where the liquid alpha-olefin copolymer is characterized by having a viscosity index at a temperature between 10,000 g / mol and 120,000 g / mol. The composition has a weight average molecular weight (Mw) in the range of 50,000 g / mol to 50,000 g / mol, a thickening capacity at a temperature of 100 DEG C of greater than 2.5 cSt and less than 3.6 cSt, and a permanent shear stability index (PSSI) of greater than 1 and less than 25. In addition, a lubricating oil composition comprising a lubricating oil viscosity index improver is presented.