213results about "Additives" patented technology

Electrosurgical lubricants, sterilized kits including the lubricants, methods for using the lubricants, and methods for preparing sterilized kits having the lubricants therein. Electrosurgical devices utilize a high frequency electrical current to cut and to coagulate tissue during surgery. A problem of the electrosurgical devices is that the heat thereof causes tissue, such as that of a human being, to remain on the device and is generally difficult to remove, even with repeated washings. The electrosurgical lubricants have been found to considerably reduce the amount of eschar that builds up on electrosurgical devices, decrease the tendency of electrodes to stick to tissues at the surgical site, and prevent damage to the surface of the electrosurgical device.

A method for operating a refrigerant circulation system that comprises a compressor, a condenser, an expansion mechanism, and an evaporator connected by piping in the stated order, wherein a refrigerant containing trifluoroiodomethane is used as a refrigerant, a refrigerator oil containing a polyol ester as a base oil is used as a refrigerator oil, the polyol ester is synthesized from a polyhydric alcohol and fatty acids, the proportion of a fatty acid having 9 carbon atoms is 65 mol% or less of the fatty acids, and the temperature of the whole refrigerant circulation system is kept at 160ºC or less.

This fluorine-containing ether compound is represented by a formula. R1-CH2-R2-(CH2-OCH2-CR3R4-CH2O-CH2-R2)z-CH2-R5 (where z is 1 or 2; R2 is a perfluoropolyether chain; R1 and R5 are each a C1-50 terminal group having at least one polar group; R3 and R4 may be the same or different, and are each a C1-5 organic group that is bonded to a tetrasubstituted carbon atom and that does not include a secondary hydroxyl group or a tertiary hydroxyl group but includes one primary hydroxyl group; and the organic group may include an ether oxygen atom between the carbon atoms, and may have an ether oxygen atom as the terminus for bonding with the tetrasubstituted carbon atom.)

The application provides an extreme pressure anti-wear agent, a preparation method thereof and heavy load vehicle gear oil, and belongs to the technical field of extreme pressure anti-wear additives. The application provides an extreme pressure anti-wear agent with a chemical structure shown in formula I or formula II. Through molecular design, the prepared extreme pressure anti-wear agent has excellent high-temperature oxidation resistance, can reduce the friction coefficient of the surface of a friction pair, and in the friction process, nitrogen elements and boron elements in the borate ester diffuse from the friction surface to the matrix to form a permeation layer, improve the wear resistance of the surface of the material, play an extreme pressure anti-wear role, make the heavy load vehicle gear oil have better load-carrying capacity and extreme pressure resistance, and thus play an energy-saving and consumption-reducing role.

This invention relates to low-odor extreme pressure agents, gear oil additive compositions, gear oil compositions, and methods for their preparation. The extreme pressure agents comprise components having the structure shown in Formula I, where n is a positive integer from 1 to 5; R1 and R2 may be the same or different; R1 and R2 are independently selected from C... 1～12 Alkyl, substituted or unsubstituted C 3～10 cycloalkyl, substituted or unsubstituted C 6～14 aryl or the structure shown in Formula II; in Formula II, R3 is selected from C 1‑4 Alkylene; the substituted C 3～10 Substituents of cycloalkyl groups, substituted C 6～14 The substituents of the aryl group are each independently selected from hydrogen, halogen, and C. 1～5 One or more alkyl groups. The extreme pressure agent and gear oil additive composition of the present invention has a low odor, mainly solving the problem of unbearable odor caused by the addition of sulfurized isobutylene in existing products.

To provide a lubricant composition having excellent lubricity and leaving no wear scars on a metal surface within a compensated wear scar diameter setting region.SOLUTION: A lubricant composition is provided in which surface-treated titanium oxide nanoparticles are mixed into a base oil to form a multi-layer lubricating film composed of three layers on a metal surface.

The application provides a gas-phase rust-proof oil and a preparation method and a rust-proof method thereof, and is characterized in that the gas-phase rust-proof oil comprises 60-80 parts by weight of base oil, 5-20 parts by weight of an oil-soluble sulfonate rust-proof agent and 3-15 parts by weight of a gas-phase corrosion inhibitor; wherein the gas-phase corrosion inhibitor comprises a first gas-phase corrosion inhibitor and a second gas-phase corrosion inhibitor; the weight ratio of the first gas-phase corrosion inhibitor and the second gas-phase corrosion inhibitor is 1-6:1; the first gas-phase corrosion inhibitor is selected from an amine with a morpholine structure; the second gas-phase corrosion inhibitor is different from the first gas-phase corrosion inhibitor and is selected from at least one of an amine with a benzene ring structure, an amine with a nitrous acid structure and an amine with a carboxylic acid structure; the gas-phase rust-proof oil of the application not only has excellent salt spray rust-proof performance and gas-phase rust-proof performance, but also does not separate for a long time, and the appearance is transparent and turbid; in the method for preparing the gas-phase rust-proof oil, the process temperature is lower than 50 DEG C, the energy consumption is low, the production process is simple, and the time consumption is less.

A rust-preventive lubricating oil composition comprising a base oil; a sorbitan fatty acid ester; an overbased magnesium sulfonate; and at least one additive selected from the group consisting of a calcium sulfonate, a calcium sulfonate complex, a zinc sulfonate, a barium sulfonate, a fatty acid zinc, an oleic acid amine salt, an alkenyl succinic acid polyimide, and a benzotriazole derivative.

The application relates to the technical field of fine chemicals, in particular to a biomimetic amphoteric surfactant as well as a preparation method and application thereof; the preparation method of the biomimetic amphoteric surfactant comprises the following steps: reacting a fatty amine polyoxyethylene ether with a halogenated hydrocarbon to obtain a benzyl quaternary ammonium salt intermediate; cooling the benzyl quaternary ammonium salt intermediate, then adding phosphorus pentoxide to react; after the addition is completed, water is added, the reaction is continuously carried out, and the biomimetic amphoteric surfactant is obtained; the biomimetic amphoteric surfactant simultaneously integrates three characteristics of phosphate anion, polyether non-ion and benzyl quaternary ammonium salt cation, effectively solves the industry problem that traditional phosphates and cationic settling agents are incompatible, and is applied to metal processing fluid, can realize stable compounding with cationic settling agents while retaining excellent extreme pressure lubricity and hard water resistance, and can replace traditional extreme pressure agents such as environmentally-unfriendly chlorinated paraffin.

This disclosure provides a method for preparing sulfidated alkylphenol salt products to achieve a high sulfidation ratio of sulfidated alkylphenol salt to unsulfidated alkylphenol salt / phenol in the context of neutralization and optional over-alkaliening additives. The sulfidated alkylphenol salt products are obtained by sulfidating alkylphenols with a sulfur chloride blend comprising about 40% to about 75% by weight of sulfur dichloride.

Disclosed herein is a lubricant composition comprising a base oil or a fully formulated lubricant; and graphene nanoparticles derived from a carbon-containing gas dispersed in the base oil or the fully formulated lubricant.

The present invention relates to heat transfer systems and methods involving zinc-containing surfaces in contact with a working fluid comprising refrigerant, lubricant and a protective agent comprising a compound according to Formula I where R and R1 are each independently selected from the group consisting of hydrogen, alkyl, hydroxyalkyl and alkylthio, provided that at least one of R and R1 is alkylthio.

This invention relates to the field of lubricating oil technology, specifically to a modified fluorinated graphene, its preparation method, its application, and a modified fluorinated graphene-based lubricating oil. The modified fluorinated graphene is obtained by modifying fluorinated graphene with a modifier solution; the modifier is selected from at least one of ODA, PVDF, and PIB. This invention also provides a method for preparing modified fluorinated graphene, comprising the following steps: mixing and reacting fluorinated graphene with a modifier solution to obtain modified fluorinated graphene. This invention also provides an application of modified fluorinated graphene in lubricating oils. This invention further provides a modified fluorinated graphene-based lubricating oil, comprising a base oil and the modified fluorinated graphene obtained by the aforementioned preparation method; the base oil is selected from pentaerythritol esters. This invention solves the problems of poor dispersibility and easy agglomeration and sedimentation of existing fluorinated graphene.

The application discloses a composite nano-lubricating additive based on an ionic liquid precursor and a preparation method thereof. The composite nano-lubricating additive is composed of a copper sulfide / chitosan composite precursor and a phosphorus-containing ionic liquid; the copper sulfide / chitosan composite precursor comprises chitosan, a soluble copper salt and a sulfur source. The phosphorus-containing ionic liquid of the application penetrates into the deep part of the composite precursor with high specific surface area and porous structure due to low interfacial tension, and the unreacted anion / cation network in the ionic liquid is firmly anchored to the polar groups on the surface of the precursor and copper-based particles through electrostatic attraction and coordination bonds, can produce strong hydrogen bond crosslinking and physical entanglement with the fiber of the soap base thickener of the lubricating grease, inhibit the oil separation phenomenon under high shear extreme pressure conditions, and at the same time, promote the rapid spreading of the additive on the metal surface of the friction pair, form a high-efficiency anti-wear layer with a "grease-film" dynamic repair synergistic effect, and thus prolong the service life of the lubricating grease.

Disclosed are: a hydrogenated product of a block copolymer having a low glass transition temperature and exhibiting good flexibility, rubber elasticity, and elongation property even in a low temperature region; a resin composition; and a method for producing the hydrogenated product of the block copolymer, in which the hydrogenated product of the block copolymer contains a polymer block (A) containing a structural unit derived from an aromatic vinyl compound and a polymer block (B) containing a structural unit derived from a conjugated diene compound, and satisfies the following conditions (1) to (3): (1) the structural unit derived from the conjugated diene compound in the polymer block (B) has a structural unit derived from butadiene and a structural unit derived from isoprene, but does not have a structural unit derived from farnesene; (2) the hydrogenated product of the block copolymer has a glass transition temperature of -50°C or lower; and (3) when a weight average molecular weight of the hydrogenated product of the block copolymer is defined as x and a crystallization temperature of the hydrogenated product of the block copolymer is defined as y (°C), 5.8x / 100,000 - y > 17 is satisfied.

The invention relates to a lubricant for protecting friction surfaces from hydrogen-mediated destruction comprising an organic copper salt, a succinimide derivative, an aromatic amine and a base oil, and a method for protecting friction surfaces from hydrogen-mediated destruction which comprises introducing said lubricant to the friction surfaces.

This invention relates to a shock absorber lubricant composition, a shock absorber, and a friction adjustment method for the shock absorber lubricant composition, which can balance operational stability and ride comfort, particularly at low amplitudes. The shock absorber lubricant composition contains a base oil and a friction modifier, the friction modifier containing pentaerythritol ester, wherein the pentaerythritol ester contains pentaerythritol tetraester in a maximum proportion or at a proportion of 50% by mass or more, and the content of pentaerythritol ester is 0.5% by mass or more.

A grease composition for a bearing for wheels of an automobile, comprising (a) a base oil, (b) a thickener, and (c) additives, wherein (a) the base oil has a kinematic viscosity at 100°C of 3 to 9 mm2 / s, and (c) the additives comprise (cl) a metal salt of dialkyldithiophosphoric acid, (c2) a metal salt of an organic sulfonic acid, and (c3) a nitrogen- and sulfur-containing heterocyclic compound, and wherein (c3) the nitrogen- and sulfur-containing heterocyclic compound comprises at least one member selected from the group consisting of 2(3H)-benzothiazolethione and 2,5-bis(alkyldithio)-1,3,4-thiadiazole.

A phosphate ester salt has a bicyclic organic base structure as a cation and a phosphate ester structure as an anion. The phosphate ester salt can effectively improve the wear-resistance performance and load-carrying capacity of the lubricating oil at a relatively small dosage, and the lubricating oil shows excellent copper corrosion resistance. Also described are a process for preparing the phosphate ester salt, a lubricating oil and lubricating grease containing the phosphate ester salt, and use of the phosphate ester salt.

A lubricant composition comprising: a) 20 to 99.5% by weight of a base oil based on the total weight of the lubricant composition, the base oil having a solubility of at least 3% by weight in the ionic liquid methyltrioctylammonium-bis(fluorosulfonyl)imide at room temperature of 20 °C, the base oil having at least 50% by weight of base oil A based on the total weight of the base oil, base oil A having a solubility of at least 3% by weight in the ionic liquid methyltrioctylammonium-bis(fluorosulfonyl)imide at room temperature of 20 °C, 20 to 99.5% by weight of a base oil based on the total weight of the lubricant composition; and b) 0.5 to 80% by weight of an ionic liquid having an anion of bis(fluorosulfonyl)imide, based on the total weight of the lubricant composition.

This invention relates to a long-term stable cationic rolling fluid, its preparation method, and its application. The long-term stable cationic rolling fluid comprises the following components in parts by weight: 80-95 parts base oil; 1.0-5.0 parts extreme pressure agent; 0.5-1.0 parts antioxidant; 0.5-2.0 parts cationic surfactant; and 0.1-1.0 parts quaternary ammonium salt containing aromatic esters. The long-term stable cationic rolling fluid provided by this invention uses a low-cost, non-potentially side-effect-free quaternary ammonium salt containing aromatic esters as a "decoy molecule," which can maintain system stability well during long-term cyclic use in the field, while also exhibiting good rust prevention, lubrication, and antibacterial properties.

The application discloses a carboxymethyl cellulose sodium modified carbon nanotube water-based lubricating additive and a preparation method thereof, and belongs to the technical field of chemical additives.The lubricating additive can form a stable dispersion system in water, and no obvious settlement is observed after standing for 60 days; when the lubricating additive is used as a water-based lubricating additive, the friction coefficient can be reduced by about 50% at a concentration of 0.2 wt%. The application realizes dispersion stabilization while modifying the carbon nanotube, breaks the previous process flow of "oxidation modification and surface coating", and has the advantages of green and efficient preparation process, low energy consumption, excellent dispersion performance, and the like, and can solve the problems of poor dispersibility, high preparation cost and insufficient use stability of the existing carbon nanotube lubricating additive.

This application provides reaction products of the following: (a) maleic natural oil, including natural oil having maleic functional groups; (b) a crosslinking agent; and (c) a base. Another aspect of this application relates to reaction products of the following: (a) maleic natural oil, including natural oil having maleic functional groups; (b) a crosslinking agent; and (c) a base. This application also provides a ceramic-coated separator for a battery pack, comprising a ceramic slurry composition comprising: (i) reaction products of the following as a dispersant: (a) maleic natural oil, including natural oil having maleic functional groups, (b) a crosslinking agent, and (c) a base; and (ii) a separator, wherein the ceramic slurry composition is in contact with at least a portion of the separator. Furthermore, this application provides a battery pack comprising the aforementioned ceramic-coated separator and a method for preparing the ceramic-coated separator.

The present disclosure provides compounds represented by Formula (I) or salts or solvates thereof, wherein R1, R2a, R2b, R2c, R3a, R3b, R3c, R3d and (II) are as defined in the specification. The present disclosure also provides compositions, vulcanized elastomeric articles, lubricant compositions, combustible fuel compositions, and fuel additive compositions comprising a compound disclosed herein. The present disclosure also provides processes for preparing the compositions and vulcanized elastomeric articles described herein. The present disclosure also provides a process for retreading tires using a composition described herein. The present disclosure also provides kits comprising a composition described herein.

The present application relates to the technical field of calcium carbonate preparation, and provides a nano calcium carbonate microcrystal dispersion system, and a preparation method therefor and a use thereof. In the present application, no volatile organic solvent is used, and the prepared nano calcium carbonate microcrystal dispersion system exhibits colloidal stability. First, a mixed reaction solution is provided, wherein the mixed reaction solution comprises the following components in parts by mass: 50-80 parts of an oily dispersion medium, 5-30 parts of a primary organic acid, 0.1-10 parts of a secondary organic acid, 0-10 parts of an inorganic acid, and 0-10 parts of an accelerant; the mixed reaction solution is mixed with a calcium-containing inorganic substance for a neutralization reaction to obtain a neutralization product feed liquid; carbon dioxide is introduced into the neutralization product feed liquid, a carbonization reaction is carried out between the carbon dioxide and the calcium-containing inorganic substance in the neutralization product feed liquid, and then water removal-stabilization treatment and homogenization treatment are sequentially carried out to obtain the nano calcium carbonate microcrystal dispersion system. The nano calcium carbonate microcrystal dispersion system prepared in the present application exhibits colloidal stability and is green and safe.

This invention relates to the field of oil additives for power generation, specifically a method for in-situ preparation of black phosphorus nanoparticles (BPNPs) using PVA / PAAM interpenetrating network hydrogel as a microreactor and its application as a wear-resistant additive in lubricating oils. The confinement effect of the interpenetrating network hydrogel results in uniform BPNP size and high crystallinity, thus endowing BPNPs with excellent air / water / oil stability, with an oxidation rate of <5% within 7 days. Swelling allows RP / KI to permeate uniformly and be physically embedded in the network. Subsequently, under a nitrogen protective atmosphere, photolysis of iodine ions generates solvated electrons (e). ‑ (aq) restores RP to P ‑ P ‑ The BP crystal nucleus is formed by recombination, and the IPN three-dimensional nanochannels (pore size 30~120nm) confine and inhibit excessive growth of the crystal nucleus. At the same time, the PVA hydroxyl groups and PAAm amide groups passivate the BP surface in situ through hydrogen bonding / coordination, preventing oxidation.

A grease composition containing a base oil (A), a thickener (B), an organic molybdenum compound (C) and an organic zinc compound (D), wherein the base oil (A) contains a mineral oil (A1), the thickener (B) contains a lithium complex soap (B1), and the base oil (A) has a kinematic viscosity of 100 mm2 / s or more at 40°C.

The object of the present invention is to provide a viscosity index improver that, in a lubricating oil composition using ester oil, exhibits excellent viscosity-enhancing effect at 100°C, can lower the kinematic viscosity at 40°C, and has a high viscosity index-enhancing effect while considering the environment, such as biodegradability and environmental toxicity. [Solution] A viscosity index improver containing a poly(meth)acrylate polymer (A), an ester oil (B), and an ester oil (C), wherein the solubility parameter (SP value) of the poly(meth)acrylate polymer (A) is 8.95 to 9.15 (cal / cm³). 3 ) 1 / 2 The ester oil (B) is a diesterified product, and the solubility parameter (SP value) of the ester oil (B) is 8.80-8.95 (cal / cm³). 3 ) 1 / 2 The ester oil (C) is a glycerol triester, and the solubility parameter of the ester oil (C) is 8.90-9.00 (cal / cm³). 3 ) 1 / 2 A viscosity index improver.