223 results about "Diphenyl ether" patented technology

The invention relates to the technical field of organic chemical synthesis, in particular to a preparation method of 3, 4 '-diaminodiphenyl ether.The preparation method comprises the steps that S1, under inert gas and in a first solvent, m-dinitrobenzene and p-acetamidophenol are subjected to a heating reaction under the condition of a weak base catalyst, and 3-nitro-4-acetamido diphenyl ether is prepared; s2, in a second solvent, the 3-nitro-4-acetamido diphenyl ether is subjected to a hydrogenation reduction reaction, and 3-amino-4-acetamido diphenyl ether is prepared; and S3, dissolving the 3-amino-4-acetaminodiphenyl ether in an alcohol solvent system, adding an aqueous solution of alkali, controlling the reaction temperature, carrying out a hydrolysis reaction, and after the reaction is finished, carrying out post-treatment to obtain the 3, 4 '-diaminodiphenyl ether. The preparation method provided by the invention has the advantages of easily available raw materials, low price, good selectivity and high product yield, and is more suitable for industrial production by comprehensively considering economical efficiency and safety.

The synthesis process comprises the following steps: (1) introducing inert gas into a reactor, adding a solvent, a Lewis acid catalyst and diphenyl ether, then dropwise adding an acyl chloride monomer solution, and synthesizing an intermediate M with a short-chain small molecular structure; (2) continuously dropwise adding an acyl chloride monomer solution into the reactor for reaction, and then adding an end-capping reagent for reaction; and (3) quenching, washing and drying the reaction product in the step (2) to obtain the product. Under the condition that only the Lewis acid is used as the catalyst, the one-pot method is adopted for synthesizing PEKK in two steps, side reactions can be reduced, meanwhile, the dosage of the catalyst is reduced, the production cost is reduced, the post-treatment process is simplified, and the obtained polyether ketone ketone is high in molecular weight and good in heat resistance and mechanical performance.

The invention discloses a preparation method of polyetherketoneketone, polyetherketoneketone and application. The method comprises the following steps: (1) mixing raw materials at a first temperature, the raw materials comprising acyl chloride, a solvent, Lewis base, diphenyl ether and Lewis acid, carrying out heat preservation, heating to a second temperature, and carrying out a first reaction stage; (2) heating to a third temperature for reaction, and carrying out a second reaction stage; (3) adding a terminator into the reaction mixture in the step (2); the heating rate in the step (1) and the heating rate in the step (2) are respectively and independently 0.1-5 DEG C / min, the weight-average molecular weight of the polyetherketoneketone prepared by the method is 5000-200000, and the molecular weight distribution coefficient is 2.5-4.5. The polyetherketoneketone with relatively narrow molecular weight distribution is obtained through an electrophilic substitution path.

The invention discloses a water treatment filtering material and a preparation method thereof, and relates to the technical field of water treatment. When the water treatment filtering material is prepared, alkaline lignin, epichlorohydrin and triethylenetetramine are subjected to a reaction through a reverse suspension cross-linking technology, and lignin porous microspheres are prepared; carrying out reaction on the lignin porous microspheres and picolinamide ligands to obtain modified lignin porous microspheres; 3-mercaptopropyltriethoxysilane and titanium dioxide are subjected to a reaction, and modified titanium dioxide is prepared; the preparation method comprises the following steps: reacting pyromellitic dianhydride, 1, 4-diaminobutylene and 4 ', 4-diaminodiphenyl ether to prepare functionalized polyamide; the functional polyamide, the modified lignin porous microspheres and the modified titanium dioxide are prepared into a spinning solution, and a polyamide membrane is prepared through electrostatic spinning; and carrying out liquid reaction on bromohexane on the polyamide membrane to obtain the water treatment filtering material. The prepared water treatment filtering material has excellent antibacterial property, heavy metal adsorption property, dye removal property and mechanical property.

The invention relates to a polyimide composite film for realizing high-dispersion carbon nanotubes through chemical anchoring and a preparation method of the polyimide composite film, which are used for solving the problems that carbon nanotubes in the existing carbon nanotube / polyimide composite material are easy to agglomerate, poor in interfacial compatibility and low in grafting efficiency. The preparation method comprises the following steps: S1, ultrasonically dispersing aminated carbon nanotubes in anhydrous dimethylacetamide to obtain a stable dispersion liquid; s2, slowly dropwise adding pyromellitic dianhydride into the stable dispersion liquid under an ice bath condition, and enabling the pyromellitic dianhydride to react with the aminated carbon nanotubes under the assistance of triethylamine to form anchor points; s3, adding a diamine monomer 4, 4 '-diaminodiphenyl ether, and gradually adding the residual pyromellitic dianhydride to carry out in-situ polymerization; and S4, preparing a wet film by adopting a curtain coating or spin coating method, and carrying out step-by-step thermal imidization at 80-300 DEG C to obtain the covalent composite film. Controllable covalent connection of the carbon nanotubes and pure polyimide chain segments can be achieved on the molecular level, and therefore the composite film with excellent heat conductivity, electromagnetic shielding performance and mechanical performance is obtained.

The application discloses a kind of temporary bonding glue and its application.Temporary bonding glue includes polyimide, the polyimide includes big conjugate unit, the conjugate atom number of big conjugate unit is greater than or equal to 40, and big conjugate unit includes at least one of diphenyl ether group, fluorenyl group or indane structural unit;The polyimide further includes at least one of benzotriazole group, nitro group.The application is improved on the structure of polyimide, and the temporary bonding glue is used in wafer processing, so that the absorbance of temporary bonding glue at target debonding wavelength 355nm is significantly increased, thereby significantly reducing threshold debonding energy, and it is expected to reduce the risk of wafer warping, cracking, or surface device failure, improve the life of laser and debonding efficiency.

The invention relates to the technical field of catalyst preparation, and discloses a carbon modified copper-based catalyst and a preparation method and application thereof. The method comprises the following steps: (1) sequentially carrying out coprecipitation and aging on an alkaline precipitant solution, a metal salt solution and an anion modifier solution to obtain an intermediate product I; and (2) under the condition that the oxygen concentration is not higher than 5% by volume, roasting the intermediate product I to obtain the carbon modified copper-based catalyst, the anion modifier solution contains sodium dodecyl diphenyl ether disulfonate and sodium gluconate in a molar ratio of 1: (1-10); the pH value of the anion modifier solution is 9-11; the metal salt solution contains zinc salt, copper salt and aluminum salt. The prepared carbon modified copper-based catalyst has the advantages of high conversion per pass of carbon dioxide, low activation temperature, high methanol selectivity, long-period operation and stable structure.

The application provides a porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction and a preparation method. The preparation method comprises the following steps: adding 4,4-diamino diphenyl ether and pyromellitic dianhydride into a solvent, uniformly mixing, and preparing a polyamide acid precursor spinning solution; electrospinning the prepared polyamide acid precursor spinning solution to prepare polyamide acid nanofibers; immersing the prepared polyamide acid nanofibers in a mixed metal salt solution containing cobalt salt, lanthanum salt and zinc salt to prepare polyamide acid nanofiber precursors loaded with metal ions; and performing programmed temperature heat treatment on the prepared polyamide acid nanofiber precursors loaded with metal ions in a protective atmosphere to prepare the porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction. The prepared porous carbon nanofiber electrocatalyst loaded with cobalt / lanthanum hydroxide heterojunction has excellent electrochemical oxygen reduction reaction and oxygen evolution reaction bifunctional catalytic activity.

The invention relates to a catalytic hydrolysis method of waste epoxy resin, which comprises the following steps: putting the waste epoxy resin into a reaction kettle, adding ultrapure water, adding a small amount of sodium dodecyl diphenyl ether disulfonate surfactant and a boron trifluoride acetic acid catalyst, and carrying out hydrolysis reaction to realize catalytic degradation of the epoxy resin. Degradation products can be converted into epoxy monomers and anhydride monomers, so that cyclic utilization is realized. Compared with the prior art, the degradation method provided by the invention is not only green and safe, but also high in degradation efficiency, solves the problem that the waste epoxy resin cannot be recycled, saves resources, meets the green development requirement, and has practical engineering application value.

The invention discloses a synthesis method of Peniterpheyl A. According to synthesis of a key structural unit furan ring, diphenyl ether is synthesized through a simple heating substitution reaction of a phenol derivative and a fluorobenzene derivative, then C-C direct oxidative coupling of double benzene rings in a molecule is achieved under a Pd / Ag catalytic system to synthesize the furan ring, and due to steric hindrance and guiding group effects, the furan ring can be synthesized into the furan ring. The product has high selectivity, does not need harsh reaction conditions, has simple synthesis steps, is suitable for large-scale production, does not need to widely screen specific strains and fermentation conditions compared with a method for obtaining a low-amount target compound from microbial fermentation separation, is simple and efficient, and can guarantee a large amount of compounds required by subsequent research and development.

The application relates to the technical field of high polymer materials, and discloses a PE material containing nano reinforcing material and a preparation method thereof, which comprises the following raw materials: low-density polyethylene, nano reinforcing material, high-temperature-resistant additive component, a compatilizer, a lubricant and an antioxidant; the low-density polyethylene is used as a matrix, the nano reinforcing material is added, nano C60 is grafted with hyperbranched polyester, the compatibility of the nano C60 and the matrix is effectively improved, the agglomeration of the nano C60 in the matrix is avoided, the advantages of the nano C60 are better exerted, and the mechanical properties of the PE material are improved; the high-temperature-resistant additive component is added, the polyisoprene molecular chain with good flexibility is used to disperse and absorb external impact energy, the toughness of the matrix is improved, the diphenyl ether group high-temperature-resistant rigid ring is introduced into the polyisoprene structure, the compatilizer can be reacted with the matrix to be crosslinked in the processing process, and the high-temperature-resistant performance and the toughness of the PE material are further improved.

The invention relates to the technical field of environmental remediation, and particularly provides a bifunctional copper-based coordination polymer photocatalyst as well as a preparation method and application thereof.The bifunctional copper-based coordination polymer photocatalyst is prepared from copper chloride dihydrate, 4, 4 '-bis (3-pyridinecarboxamide) diphenyl ether and benzoic acid as main raw materials by adjusting reaction parameters. And reacting in a hydrothermal kettle to generate the bifunctional copper-based coordination polymer photocatalyst {[Cu2 (3-padpe) 2Cl2]. H2O} n. The method has the characteristics of simple process, low cost, high catalyst activity, good stability, reusability and the like, shows good application potential in repairing water bodies and soil polluted by organic matters and heavy metals, and provides a new research thought and insight for development of a novel multifunctional environment repairing agent.

The present application relates to the technical field of aromatic polyamide polymer, in particular to a modified poly-p-phenyleneterephthalamide fiber with high elongation at break and a preparation method thereof.The present application introduces a small amount of 3,4'-diamino diphenyl ether and a fourth monomer containing a bis-amino phenoxy functional group during polymerization, and controls the molar ratio of the third monomer and the fourth monomer in the total amount of diamine monomer, thereby to a certain extent, the rigid molecular chain structure of the conventional p-aramid is destroyed, while the breaking strength of the fiber is maintained, the elongation at break of the polymer fiber is enhanced, the modified poly-p-phenyleneterephthalamide can still be prepared by dry spraying wet spinning process, the cost of building a new production line in the factory is saved, the process conditions and parameters are optimized, the fiber with stable elongation at break index is obtained, and the prepared fiber has an elongation at break of more than 3.6%.

The invention relates to diphenyl ether compounds with anti-cryptococcus activity. The invention discloses an application of a diphenyl ether compound in preparation of a medicine for inhibiting the activity of cryptococcus. The compound has good inhibitory activity on multiple strains of cryptococcus sp. And is suitable for research on an anti-cryptococcus active lead compound or preparation of an anti-cryptococcus medicine.

The invention provides polyether sulphone and a preparation method thereof. The preparation method comprises the following steps: mixing a polar aprotic solvent, a bisphenol monomer and an alkaline substance, introducing protective gas, heating, dehydrating, cooling to T1, adding a diphenyl sulfone monomer, and carrying out heat preservation at T1 to carry out a first-stage polymerization reaction; adding a low-polarity solvent, heating to T2, and carrying out second-stage polymerization reaction to obtain polyether sulfone; wherein the low-polarity solvent is selected from one or a combination of more than two of normal hexane, cyclohexane, methylbenzene, ethylbenzene, biphenyl and diphenyl ether. By reducing or partially inhibiting the generation of the cyclic oligomer in the reaction process, the polyarylether sulfone with narrow molecular weight distribution and low content of the cyclic polymer is obtained. The method provided by the invention is simple and easy to implement, is convenient to control, avoids complex product purification and separation processes, and is beneficial to industrial implementation.

Disclosed in the present invention are an acrylate emulsion for a polymer cement waterproof coating, a raw material composition thereof, a preparation method therefor, and a use thereof. The raw material composition comprises the following components in parts by weight: 3-4.5 parts of sodium dodecyl diphenyl ether disulfonate, 1.5-2.5 parts of acrylamide, 2-4 parts of fatty alcohol polyoxyethylene ether, 2-4 parts of polyethylene glycol dimethacrylate, 1-2 parts of acrylic acid, 0.5-1 part of titanium triisostearoylisopropoxide, 40-60 parts of acrylate, 0.5-1 part of sodium persulfate, 50-60 parts of deionized water, and 0.1-0.3 parts of a 10% sodium hydroxide solution. The acrylate emulsion prepared by the present invention has excellent performance and good dispersibility, and a polymer cement waterproof coating prepared by using the emulsion of the present invention has lower viscosity and better workability.

The present invention provides a polyimide film comprising, as polymeric units, dianhydride monomers comprising pyromellitic dianhydride (PMDA), and diamine monomers comprising 4,4'-methylenedianiline (MDA), meta-phenylenediamine (MPD), 4,4'-diaminodiphenyl ether (ODA), and para-phenylenediamine (PPD), the tensile strength and percent elongation of the polyimide film being 180 MPa or greater and 90% or greater, respectively.

The invention discloses preparation and application of a double-sided aluminized polyimide film for ultralow-temperature multilayer vacuum insulation, and relates to the technical field of polyimide film preparation. The invention relates to an ultralow-temperature multilayer double-sided aluminized polyimide film for vacuum heat insulation, which consists of a polyimide base film and aluminized layers formed on two surfaces of the polyimide base film through a vacuum evaporation method, the polyimide base film is prepared from the following raw materials in parts by mass: 100 parts of pyromellitic dianhydride, 4, 4 '-diaminodiphenyl ether, 5-15 parts of a low-temperature-resistant modifier, 3-8 parts of nano silicon dioxide filler, 0.5-2 parts of a flatting agent, 0.5-1.5 parts of an anti-aging agent, 3-6 parts of a silane coupling agent and 5-15 parts of polyvinyl chloride. The anti-aging agent with a specific structure is adopted, the phenolic hydroxyl group and the benzotriazole structure have a synergistic effect, free radicals can be captured, ultraviolet rays can be absorbed, the compatibility with a polyimide matrix is good, precipitation at low temperature is avoided, the problems that a traditional anti-aging agent is poor in low-temperature dispersion and prone to failure are solved, and the service life of the film is prolonged.

The application relates to the technical field of building material materials, and discloses a heat-insulating metal laminated plate for building materials and a preparation method thereof.The heat-insulating metal laminated plate is composed of an epoxy resin coating layer, a PVC film layer, a metal plate, an ASA film layer and an epoxy resin coating layer; tetraamino biphenyl imidazole, 4,4'-amino diphenyl ether and dianhydride monomers are subjected to crosslinking polymerization reaction to obtain polyimide aerogel, which is then added into epoxy resin to obtain a coating layer; the polyimide aerogel has a three-dimensional porous network structure, a larger specific surface area and richer pore structure, reduces the energy transmission efficiency of gas molecules through collision, improves the heat-insulating performance of the aerogel, and is added into the epoxy resin coating layer, which is beneficial to preventing heat transmission, reducing the thermal conductivity of the coating layer and the metal laminated plate and improving the heat preservation and heat insulation performance.

This utility model discloses an apparatus for preparing 2,4,4'-trichloro-2'-nitrodiphenyl ether, relating to the technical field of 2,4,4'-trichloro-2'-nitrodiphenyl ether production apparatus. The inlet of the reaction vessel is connected via pipelines to a 2,4-dichlorophenol tank, a 2-nitro-4-chlorophenol tank, a sodium hydroxide tank, and an N,N-dimethylformamide tank. The outlet of the reaction vessel is connected via pipelines to an extraction tank. The inlet of the extraction tank is connected via pipelines to a deionized water tank and an ethyl acetate tank. The outlet of the extraction tank is connected via pipelines to an organic phase tank. The outlet of the organic phase tank is connected via pipelines to a drying tank. The inlet of the drying tank is connected via pipelines to an anhydrous sodium sulfate tank. The outlet of the drying tank is connected via pipelines to a vacuum distillation tank. The bottom outlet of the vacuum distillation tank is connected via pipelines to a product tank. The process is simple, and the product yield and purity are high.

The invention belongs to the technical field of preparation devices of 4, 4 '-dinitrodiphenyl ether, and particularly relates to a nitration device for producing 4, 4'-dinitrodiphenyl ether, which comprises a support frame, a tank body is rotatably connected to the support frame, a storage mechanism for storing and transporting reaction raw materials is fixedly connected to the upper end of the support frame, a reaction mechanism is fixedly connected to the interior of the tank body, and the reaction mechanism is fixedly connected to the lower end of the support frame. The input end of the reaction mechanism is connected with the output end of the storage mechanism through a pipeline, and a collecting structure is arranged at the output end of the reaction mechanism and used for collecting reaction products. The storage mechanism stores and stirs raw materials to prevent incomplete nitration reaction or side reaction increase caused by non-uniform local concentration of the raw materials, and when the raw materials are output into the reaction mechanism, the raw materials enter the reaction mechanism at a high speed, so that the raw materials collide at a high speed and are preliminarily mixed in the high-speed collision, and the reaction efficiency is improved. The subsequent reaction is more sufficient.

The invention relates to a wide-temperature-range high-moisture-resistance piezoelectric damping material and a preparation method thereof.The wide-temperature-range high-moisture-resistance piezoelectric damping material is prepared from, by weight, 80-90 parts of fluorine-containing modified polyimide precursor, 5-12 parts of MXene-CNT heterogeneous conductive filler, 3-8 parts of hydrophobic modified silicon dioxide and 0.3-1.5 parts of cross-linking agent; wherein the fluorine-containing modified polyimide precursor is prepared by copolymerization of 4, 4 '-diaminodiphenyl ether, pyromellitic dianhydride and 2, 2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane, and the fluorine-containing modified polyimide precursor is prepared by copolymerization of 2, 2-bis (3-amino-4-hydroxyphenyl) hexafluoropropane; the hydrophobic modified silicon dioxide is obtained by modifying silicon dioxide through gamma-methacryloxy propyl trimethoxy silane; the cross-linking agent is trimesoyl chloride. The piezoelectric damping material disclosed by the invention is good in low-temperature toughness and has long-term stable moisture-proof performance.

The application discloses a kind of polyether ketone ketone and preparation method thereof, the application is first added terephthaloyl chloride or isophthaloyl chloride and diphenyl ether, then under the condition of adding catalyst anhydrous aluminium chloride, low-temperature prepolymerization for a certain time, then the remaining diphenyl ether is added to complete the short-chain end-capping reaction.The application reduces the temperature in the early stage of the starting reaction process and adopts the reflux method in the selection of the washing reagent in the later stage, so that the purity and molecular weight of the obtained high molecular polymer polyether ketone ketone are high.The content of aluminum, a catalyst contained in PEKK, is lower, and the intrinsic viscosity (molecular weight) and tensile strength of the tested product are higher.

The present invention belongs to the technical field of polyimide composite film manufacturing, and in particular to a transparent thermoplastic polyamic acid resin, a transparent thermoplastic composite film, and its preparation method and application. The transparent thermoplastic polyamic acid resin includes a diamine monomer and a dianhydride monomer; the diamine monomer is a mixture of 2,2'-bis(trifluoromethyl)-4,4'-bis(4-aminophenylcarbonylamino)biphenyl and 4,4'-bis(3-aminophenoxy)diphenyl sulfone; the dianhydride monomer is a mixture of 2,3,3',4'-diphenyl ether tetracarboxylic dianhydride and p-phenylene-bis(triphenylene)diamine dianhydride. The transparent thermoplastic composite film provided by the present invention has both excellent light transmittance and excellent peel strength.

The invention discloses a method for detecting components of a 1, 4-bis (4-phenoxy benzoyl) benzene reaction solution by high performance liquid chromatography, which belongs to the technical field of analysis and detection methods, and the set chromatographic analysis conditions are as follows: separation by adopting a C18 chromatographic column subjected to end capping treatment, detection by adopting a diode array detector, and detection by adopting a chromatographic column subjected to end capping treatment. The contents of paraphthaloyl chloride, diphenyl ether, 1, 4-bis (4-phenoxybenzoyl) benzene (EKKE), EKKE ortho-isomer, 4-(4-phenoxybenzoyl) benzoic acid and 4-(4-phenoxybenzoyl) benzoate are simultaneously determined by using a single-point external standard method, and a determination method is provided for central control analysis and reaction endpoint judgment in a synthesis process of the 1, 4-bis (4-phenoxybenzoyl) benzene. The method is high in separation degree; the accuracy rate of a determination result is high, and the recovery rate of each substance is within the range of 95-105%; result repeatability RSD is less than 2%, and repeatability is good.

The invention discloses a novel amide compound with a substituted diphenyl ether structure as well as a preparation method and application of the novel amide compound. The compound comprises a structure as shown in a general formula (I) or a general formula (II), and is characterized in that a benzo five-membered aromatic heterocycle (including but not limited to benzofuran, benzothiophene, indole and the like) is connected with a substituted diphenyl ether group through an amido bond to form a unique molecular skeleton. Diversified substituent groups R1 such as halogen, alkyl and heterocyclic rings can be introduced into a benzene ring, substituent groups R2 such as alkyl and alkoxy (n is an integer from 0 to 2) are introduced into an intermediate connecting chain, and therefore diversity optimization of the molecular structure is achieved. A biological activity test shows that the compound has remarkable proliferation inhibition activity on SK-N-AS neuroblastoma cells, and shows potential treatment value on malignant tumors such as neuroblastoma. Through systematic molecular design, a substituted diphenyl ether structure compound with a novel structure is constructed, and a brand new chemical entity is provided for developing new anti-cancer drugs.

The present invention provides a phosphite bidentate phosphine ligand having the following structure: wherein X 1 is oxygen or sulfur, R 1 、R 2 、R 3 、R 4 、R 5 、R 6 、R 7 、R 8 、R 9 、R 10 、R 11 、R 12 、R 13 、R 14 、R 15 、R 16 、R 17 、R 18 、R 19 、R 20 、R 21 、R 22 、R 23 and R 24 Each is independently selected from hydrogen, halogen, substituted or unsubstituted C1-C30 alkyl, and substituted or unsubstituted C6-C30 aryl. The above-mentioned phosphite bidentate phosphine ligand provided by the present invention has a special structural fragment of diphenyl ether or diphenyl sulfide, in which the unique oxygen or sulfur can enhance the catalytic activity of the bidentate phosphine ligand and also make the coordination between it and the catalytically active metal more stable, thereby improving the structural stability of the catalyst system including the ligand and enhancing the catalytic effect.

The invention relates to an ionic carbonyl cobalt-phosphine complex. The complex has a structure as shown in a formula I, wherein R1 to R8 are respectively any one of independently aryl, benzyl or cycloalkylene formed in pairs; x is an integer of 1-3; y is a counter anion; the xanthene ligand is any one of phenyl, diphenyl ether group, xanthene group, biphenyl group, dinaphthyl group, silyl group and cyclosiloxy / nitrogen alkyl ligand skeleton; and the dotted line part only represents a complex structure composed of tridentate or more phosphine compounds and cobalt. Meanwhile, the invention also discloses a synthesis method and application of the complex. The synthesis method is simple and high in yield, and the obtained ionic carbonyl cobalt-phosphine complex has more excellent stability and oxidation resistance, is more convenient to store, transport and use in long-period hydroformylation reaction, has the advantages of being capable of being separated, recycled and reused and the like, and is more suitable for industrial amplification application.

The invention discloses automobile bearing lubricating grease and a preparation method thereof. The lubricating grease comprises the following components in percentage by mass: 70.5-80.5% of base oil; 13%-19% of a thickening agent; 6.5%-10.5% of an additive; wherein the base oil is alkyl diphenyl ether; the thickening agent is diurea and is prepared by reacting aniline, oleylamine and MDI; the additive comprises ammonium phosphonate and diethanol amine, and the ammonium phosphonate is ionic liquid. The bearing lubricating oil has excellent high-temperature resistance, oxidation resistance, water resistance, rust resistance and extreme pressure wear resistance and long service life, the phenomena of peeling, clamping stagnation, sintering and the like of a bearing are avoided after the bearing lubricating oil is used for a long time, the service life of the bearing is prolonged, and the occurrence rate of automobile faults is reduced.