15 results about "Polyisobutylene succinimide" patented technology

The application belongs to the technical field of lubricating oil additives, and particularly relates to a polyisobutylene succinimide dispersant as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing polyisobutylene maleic anhydride, base oil and aromatic hydrocarbon solvent, then adding aminobenzene boronic acid, and performing reaction by increasing temperature to reflux temperature, and obtaining the polyisobutylene succinimide dispersant after filtration. The polyisobutylene succinimide dispersant is prepared by using polyisobutylene maleic anhydride and aminobenzene boronic acid, the molecular structure of the polyisobutylene succinimide dispersant contains not only an aromatic ring but also an oxygen-containing benzene boronic acid group, the aromatic ring and the benzene boronic acid group both have a good adsorption effect on soot particles, and the ability of the polyisobutylene succinimide dispersant to disperse soot is improved. The performance test results show that the oil product prepared by using the polyisobutylene succinimide dispersant of the application not only improves the soot dispersion performance of the oil product, but also improves the high-temperature detergency of the oil product, and the preparation process is simple and easy to implement.

The application provides a hybrid vehicle engine lubricating oil composition and a preparation method thereof.The hybrid vehicle engine lubricating oil composition comprises the following components: (A) a benzotriazole derivative; (B) a composite antioxidant comprising an alkylated diphenylamine antioxidant and a sulfide phenolic antioxidant; (C) a polyisobutylene succinimide ashless dispersant; (D) a sulfonate and / or a sulfated alkyl phenate; (E) a zinc dialkyldithiophosphate; (F) a composite friction modifier comprising an oil-soluble organic molybdenum friction modifier and an ashless friction modifier; (G) a phosphite type extreme pressure antiwear agent; and (H) a major amount of a lubricating oil base oil; wherein the structure of the benzotriazole derivative is shown in formula (I): wherein the definitions of the groups are shown in the specification.The hybrid vehicle engine lubricating oil composition has excellent antioxidant performance, corrosion resistance and rust resistance, and good emulsion retention performance and wear resistance.

This invention belongs to the field of coolant technology, specifically relating to a coolant and its application in an immersion liquid-cooled energy storage system. The coolant, by weight, comprises 80-95 parts base oil, 1-5 parts thermally conductive nanoparticles, 0.5-2 parts composite dispersant, 0.3-1 part composite corrosion inhibitor, 0.1-0.5 parts antioxidant, 0.2-0.5 parts pour point depressant, and 0.01-0.05 parts defoamer. The base oil is a mixture of polyalphaolefin and synthetic ester, and the composite dispersant is a compound of polyisobutylene succinimide and Mannich base dispersant. Aging tests show that this coolant exhibits high thermal conductivity retention, low acid value increase, and low corrosion rate. The coolant of this invention can effectively maintain the dispersion stability of nanoparticles in the environment of precipitates from sealing materials, extending the fluid change cycle.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

The application relates to the technical field of light-adjusting films, and particularly discloses a low-voltage-driven intelligent dynamic light-adjusting film and a preparation method thereof. The low-voltage-driven intelligent dynamic light-adjusting film comprises a transparent substrate, a transparent electrode and an electrophoretic medium layer, the transparent electrode is plated on one side of the transparent substrate, the transparent electrode is bonded with the electrophoretic medium layer through an adhesive, and the components of the electrophoretic medium layer include electrophoretic particle microcapsules and a binder. The electrophoretic particle microcapsules are used for storing an internal phase, the components of the internal phase include electrophoretic particles, a charge control agent, a stabilizer and a dispersed mobile phase, and the components of the stabilizer include polyisobutylene succinimide. The polyisobutylene succinimide is used for increasing the steric hindrance of the inner surface of the capsule wall, hindering the agglomeration of the electrophoretic particles on the inner surface of the capsule wall, and increasing the light transmittance adjustment range of the light-adjusting film under low-voltage driving.

This invention relates to the field of lubricant technology, specifically to a lubricant for agricultural machinery and its preparation method. This agricultural machinery lubricant, by weight, comprises the following components: 85-93 parts of a first base oil, 2.0-3.0 parts of 1,3-bis(3-phenoxyphenoxy)benzene, 0.2-0.3 parts of zinc dialkyl dithiophosphate, 0.5-1.0 parts of a graphene-based anti-wear additive, 2.0-4.0 parts of polyisobutylene succinimide, 0.5-1.5 parts of a hindered phenolic antioxidant, 1.5-3.0 parts of hydrogenated styrene-isoprene copolymer, and 0.2-0.6 parts of polymethacrylate; wherein the first base oil comprises poly(α-olefin) PAO4 and paraffin oil in a weight ratio of 2-3:1. The agricultural machinery lubricant provided by this invention improves the anti-wear and friction-reducing properties of the graphene-based anti-wear additive, and enhances the stable dispersibility of functionalized graphene in the oil phase and its interfacial properties with the oil phase.

This invention relates to the field of industrial lubricant additives, specifically to a novel multifunctional industrial oil compound, comprising, by weight, a sulfurized olefin extreme pressure anti-wear agent, a phenolic antioxidant, an amine antioxidant, a phosphate ester anti-wear agent, a boronized phosphorus-containing polyisobutylene succinimide dispersant, a thiocarbamate, dodecenyl succinic acid, and a metal deactivator; the weight ratio of the sulfurized olefin extreme pressure anti-wear agent to the phosphate ester anti-wear agent is 1.2:1 to 5:1; the number average molecular weight of the boronized phosphorus-containing polyisobutylene succinimide dispersant is 1000 to 3000. The novel multifunctional industrial oil compound provided by this invention, through scientific formulation design and optimized preparation process, effectively solves the technical defects of existing industrial oil compound agents and possesses multiple significant beneficial effects.

This invention belongs to the field of lubricating oil additives, specifically relating to a soot-dispersible polyisobutylene succinimide dispersant, its preparation method, and its application. The preparation method includes the following steps: (1) mixing polyisobutylene maleic anhydride, base oil, and aromatic solvent, stirring evenly, heating, adding polyethylene polyamine, introducing nitrogen gas, heating to the aromatic reflux temperature, and performing an amidation reaction to obtain product 1; (2) adding aminophenylboronic acid to product 1, continuing reflux, borizing reaction, removing the solvent by vacuum distillation, filtering, and obtaining the soot-dispersible polyisobutylene succinimide dispersant. The dispersant in this invention has the characteristic of good soot dispersion performance. The prepared product can improve the soot dispersion of oil products with a lower dosage. Moreover, the use of aminophenylboronic acid for borization reaction can improve high-temperature detergency. The preparation process of this invention is simple and easy to implement.

This invention discloses a high-temperature resistant downhole emulsion explosive and its preparation method, belonging to the field of emulsion explosive technology. The emulsion explosive comprises an aqueous phase material, an oil phase material, and a sensitizer, with a mass ratio of (88-96):(4-12):(0.8-2.0). The aqueous phase material, by mass parts, includes the following raw materials: 70-80 parts ammonium nitrate, 4-6 parts sodium nitrate, 5-8 parts urea, 0.1-0.6 parts chitosan quaternary ammonium salt, and 10-20 parts water. The oil phase material, by mass parts, includes the following raw materials: 50-70 parts composite oil phase and 20-40 parts composite emulsifier, which includes Span80 and polyisobutylene succinimide derivatives. This invention involves adding the aqueous phase material to the oil phase material, adding the sensitizer to the emulsion matrix formed by emulsification, and stirring to prepare the emulsion explosive. The emulsion explosive provided by this invention is suitable for use in deep well high-temperature environments and exhibits good high-temperature stability.

The present application provides a diesel engine oil dispersant composition, a diesel engine oil composition containing the same and a preparation method thereof, and belongs to the technical field of lubricating oil additives and lubricating oil. The diesel engine oil dispersant composition comprises the following components: soot ashless dispersant, mono-polyisobutylene succinimide and boronized polyisobutylene succinimide. The three components cooperate with each other, and in particular, the soot ashless dispersant and the polyisobutylene succinimide (mono-polyisobutylene succinimide and boronized polyisobutylene succinimide) have a remarkable synergistic effect, which endows the diesel engine oil composition with excellent soot dispersibility, oil sludge dispersibility and oxidation resistance, and higher stability in long oil change period oil products; meanwhile, the diesel engine oil composition has the characteristics of low sulfur content, low phosphorus content and low sulfate ash content, is suitable for lubricating road diesel engines with national VI and below emission, and can meet the requirements of long oil change period.

This invention provides a gasoline engine lubricating oil composition and its preparation method. The gasoline engine lubricating oil composition of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) a sulfonate and / or a sulfurized alkylphenol salt; (E) zinc dihydrodithiophosphate; (F) an organomolybdenum compound; (G) an ethylene-propylene copolymer; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The gasoline engine lubricating oil composition of this invention exhibits excellent antioxidant, detergency, and dispersing properties, while also demonstrating good anti-wear properties under extreme pressure and lean-oil friction conditions, effectively suppressing engine wear caused by frequent start-stop cycles in hybrid electric vehicles.

This invention provides a hydrogen fuel cell internal combustion engine lubricating oil composition and its preparation method. The hydrogen fuel cell internal combustion engine lubricating oil composition of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) a phenolic ester; (C) polyisobutylene succinimide; (D) salicylates and / or sulfurized alkylphenol salts; (E) zinc dihydrogen dithiophosphate; (F) an ashless friction modifier; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The hydrogen fuel cell internal combustion engine lubricating oil composition of this invention exhibits excellent antioxidant, detergency, dispersing, and anti-wear properties, effectively reducing engine wear caused by emulsification of hydrogen fuel cell internal combustion engine oil due to increased water content.

This invention relates to a method for reducing abnormal combustion events during engine operation of a hydrogen-fired internal combustion engine (HICE). The method includes the steps of: a) providing the HICE with a lubricating oil composition comprising or a mixture of the following components: i) a base oil having a KV100 of less than or equal to 12 cSt and an amount greater than 50% by weight of the composition, and containing Group I, Group II, Group III, Group IV base oils, or combinations thereof; ii) at least one boronized polyisobutylene succinimide (PIBSA-PAM) dispersant in an amount of 0.25% to 8.0% by weight of the composition to provide the composition with 30 to 1000 ppm by weight of total boron, wherein the boronized PIBSA-PAM dispersant is selected from lower molecular weight PIBSA-PAM dispersants (Mn less than 1600 g / mol), higher molecular weight PIBSA-PAM dispersants (Mn 1600 g / mol or greater), and combinations thereof; iii) At least one over-alkaline metal-containing detergent having a total base number (KOH / g) greater than or equal to 9 and less than or equal to 500 and being contained at a treatment level providing the composition with total metals between 100 and 5000 ppm by weight and total soaps between 0.15% by weight and 8.0% by weight; and iv) the lubricating oil composition having a total sulfate ash content less than or equal to 2.5% by weight, a total phosphorus level less than or equal to 0.120% by weight, and an SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X, or 0W-X, wherein X represents any one of 8, 12, 16, 20, 30, 40, 50, or 60; b) providing the HICE with hydrogen-containing fuel; and c) burning the fuel in the HICE. Lubricating oil compositions and concentrates for reducing the tendency for undesirable combustion events in HICE are also provided.

The application discloses low-temperature-resistant emulsion explosive and a preparation method thereof, and relates to the technical field of emulsion explosive. The emulsion explosive comprises the following raw materials in parts by weight: 500-1000 parts of ammonium nitrate, 50-100 parts of sodium nitrate, 5-15 parts of a surfactant, 30-50 parts of a composite wax, 10-20 parts of an emulsifier, 80-120 parts of water, 1-3 parts of modified nano silicon dioxide and 10-30 parts of a sensitizer. The surfactant is cocamide propyl betaine. The emulsifier is composed of polyisobutylene succinimide and xylitol oleate gemini emulsifier. Through the action of the emulsifier and the modified nano silicon dioxide, the structural maintaining capacity of the emulsion matrix under low-temperature conditions and the anti-water separation and anti-coalescence performance are remarkably improved. The added surfactant can also act on the modified nano silicon dioxide, so that the low-temperature resistance of the emulsion explosive is further improved.