224 results about "Diimide" patented technology

The invention relates to the technical field of catalysts, and discloses a preparation method and application of a copper-based metal-organic framework catalytic material.The preparation method comprises the following steps that S1, cuprous salt, N, N '-bis (5-aminonicotinyl) naphthalimide and a solvent are mixed, and a mixture is obtained; s2, heating the mixture to a reaction temperature, carrying out a constant-temperature reaction, and cooling to obtain a crystal; and S3, washing and drying the crystal to obtain the copper-based metal-organic framework catalytic material. According to the preparation method of the copper-based metal-organic framework catalytic material provided by the invention, N, N '-bis (5-aminonicotinyl) naphthalimide is used as an organic ligand to prepare the copper-based metal framework Cu-PTD with N / O co-coordination, and the copper-based metal framework Cu-PTD has relatively strong electrocatalytic carbon dioxide reduction and electron transfer capabilities; and the catalyst has relatively high selectivity on electrocatalytic carbon dioxide reduction products.

The invention provides a triazine covalent organic framework film as well as a preparation method and application thereof. A preparation method of a triazine covalent organic framework membrane comprises the following steps: (1) soaking and washing a polyacrylonitrile ultrafiltration membrane in a strong alkali solution to obtain a pretreated ultrafiltration membrane; (2) soaking the pretreated ultrafiltration membrane in a 2-morpholine ethanesulfonic acid buffer solution containing N-hydroxysuccinimide and 1-ethyl-(3-dimethylaminopropyl) carbodiimide, and washing with water to obtain an activated ultrafiltration membrane; (3) soaking the activated ultrafiltration membrane in a first organic phase solution of a polyamine monomer and 1, 4-dioxane, and washing with water; soaking in a second organic phase solution of a polyaldehyde monomer and 1, 4-dioxane to obtain a modified ultrafiltration membrane; and (4) immersing the modified ultrafiltration membrane into a mixed solution composed of a polyamine monomer, a polyaldehyde monomer, acetic acid and 1, 4-dioxane, and cleaning to obtain the triazine covalent organic framework membrane. The triazine covalent organic framework membrane provided by the invention has good separation performance and catalytic oxidation performance.

The invention relates to the technical field of polyimide fibers, in particular to a method for preparing polyimide fibers of different color systems based on in-situ coloring, which comprises the following steps: carrying out condensation polymerization on perylene tetracarboxylic dianhydride compounds or perylene diimide, diamine monomers and dianhydride monomers to obtain a polyamide acid solution; adding acetic anhydride and pyridine into the polyamide acid solution for chemical ring-closure reaction to obtain a polyimide solution; and carrying out wet spinning on the obtained polyimide solution to obtain the colored polyimide fiber. The method for preparing the polyimide fibers of different color systems based on in-situ coloring is simple in process and environmentally friendly, and the prepared polyimide fibers of different color systems are high in color fastness and excellent in mechanical property.

The present invention provides a preparation method for polyamide, comprising the steps of: (a) preparing polyamic acid by polymerizing a dianhydride monomer and a diamine monomer; and (b) preparing soluble polyimide by reacting the polyamic acid with carbonyl diimidazole, wherein the soluble polyimide is in a varnish form.

The preparation method comprises the following steps: carrying out reflux reaction on 4-bromo-1, 8-naphthalic anhydride and primary amine in an organic solvent to obtain an intermediate product, and carrying out C-N coupling reaction on the intermediate product, a compound containing a nitrogen secondary amine electron-donating group, alkali and a catalyst in the organic solvent to obtain the double-state emission fluorescent dye. The two-state emission dye is obtained. An amino auxochrome group of a bridge ring structure is modified in a 4-bromine-1, 8-naphthalimide parent, the fluorescence quantum yield of the dye in a polar solvent is improved through the characteristic that nitrogen atom lone pair electrons of the nitrogen-containing bridge ring structure are not easy to overturn, and pi-pi stacking, which is not beneficial to emission, of the dye is inhibited through the large steric hindrance effect of the bridge ring structure; the dye shows bright fluorescence emission in non-polar and polar solvents, also has a very strong fluorescence quantum yield in a solid state, and shows a quantum yield greater than 94% when the dye is dispersed in an EVA (Ethylene-Vinyl Acetate) film.

The invention relates to an anti-blue light optical protective film and a preparation method thereof, belonging to the technical field of anti-blue light optical elements. The protective film comprises 0.2-1.4 parts of a blue light absorber, 9-27 parts of ultrapure water and 1-3 parts of polyvinyl alcohol, and the blue light absorber consists of 0.07-0.09 parts of graphene quantum dots, 110-130 parts of anhydrous ethanol, 0.05-0.07 parts of aminonitrobenzene compounds, 1-2 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide and 0.3-0.6 parts of N-hydroxysuccinimide. The preparation method comprises the following steps: mixing polyvinyl alcohol and ultrapure water, swelling and dissolving the mixture in sequence to obtain a polyvinyl alcohol solution; then mixing the polyvinyl alcohol solution and the blue light absorber to obtain a mixed material; and finally coating the mixed material on a glass substrate and then drying the mixture to obtain the anti-blue light optical protective film. The anti-blue light optical protective film prepared by using the blue light absorber will not change the high light transmittance of the optical film itself in the visible light region, and can also absorb harmful blue light.

The invention discloses a cellulose acetate based 1, 8-naphthalimide fluorescent probe for detecting Hg < 2 + > as well as a preparation method and application of the cellulose acetate based 1, 8-naphthalimide fluorescent probe. The preparation method comprises the following steps: by taking 4-bromo-1, 8-naphthalic anhydride as a raw material, carrying out condensation reaction on the 4-bromo-1, 8-naphthalic anhydride and 4-aminobutyric acid to prepare 4-(4-bromo-1, 8-naphthalic diimide) butyric acid (BNA-B); the BNA-B and piperazine are subjected to a substitution reaction, and a compound PNA-B is prepared; the PNA-B and 4-(bromomethyl) pyridine hydrochloride are subjected to a substitution reaction, and a compound PNA-B is prepared; and the PNA-B and cellulose acetate (CA) are subjected to an esterification reaction, such that the cellulose acetate-based 1, 8-naphthalimide fluorescent probe PNA-CA is prepared. The compound can specifically recognize Hg < 2 + >, after Hg < 2 + > is added into a PNA-CA acetonitrile / PBS buffer solution under 365nm ultraviolet irradiation, the fluorescence color of the solution is changed from colorless to yellow, the response time is 20s, the detection limit reaches 9.3 * 10 <-8 > M, and the probe has a good application prospect.

This invention discloses a cellulose acetate-based 1,8-naphthalenedimide fluorescent probe for detecting hydrazine, its preparation method, and its application. The invention uses 4-bromo-1,8-naphthalenedimide as a raw material, which undergoes a condensation reaction with 4-aminobutyric acid to obtain 4-(4-bromo-1,8-naphthalenedimide)butyric acid (BNA-B); BNA-B undergoes a coupling reaction with 4-formylphenylboronic acid to obtain 4-(4-(4-formylphenyl)-1,8-naphthalenedimide)butyric acid (FNA-B); compound FNA-B then undergoes an esterification reaction with cellulose acetate (CA) to obtain the cellulose acetate-based 1,8-naphthalenedimide fluorescent probe FNA-B-CA. This compound specifically recognizes hydrazine. Under 365 nm ultraviolet light irradiation, the addition of hydrazine to a DMF / H2O solution of FNA-B-CA changes the fluorescence color of the solution from bright blue to colorless, indicating a detection limit of 8.4 × 10⁻⁶ for hydrazine. ‑8 M has promising applications as a fluorescent probe for the detection of hydrazine.

The invention provides a polyglutamic acid granular fertilizer and a preparation method thereof, and the preparation method comprises the following steps: S1, dissolving lignin in an alkaline solution, and heating until the lignin is dissolved; adding epsilon-polylysine fermentation liquor, mixing, heating, adding a formaldehyde solution, and carrying out grafting reaction to obtain epsilon-polylysine grafted lignin; s2, mixing the epsilon-polylysine grafted lignin solution and the gamma-polyglutamic acid solution, adding N-hydroxysuccinimide, standing at a low temperature, adding 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, and mixing; carrying out gradient temperature reaction to obtain lignin grafted epsilon-polylysine / gamma-polyglutamic acid hydrogel; and S3, homogenizing the lignin-grafted epsilon-polylysine / gamma-polyglutamic acid hydrogel, carrying out normal-temperature high-pressure airflow crushing, and spraying the crushed hydrogel to the surfaces of particles obtained by granulating a basic material through high-pressure electrostatic spraying, so as to obtain the polyglutamic acid granular fertilizer. The obtained polyglutamic acid granular fertilizer has relatively strong water-retaining and slow-release (releasing water, urea and the like) effects.

The invention discloses a cellulose acetate based 1, 8-naphthalimide fluorescent probe for detecting hydrazine as well as a preparation method and application of the cellulose acetate based 1, 8-naphthalimide fluorescent probe. The preparation method comprises the following steps: by taking 4-bromo-1, 8-naphthalic anhydride as a raw material, carrying out condensation reaction on the 4-bromo-1, 8-naphthalic anhydride and 4-aminobutyric acid to prepare 4-(4-bromo-1, 8-naphthalic diimide) butyric acid (BNA-B); the preparation method comprises the following steps: carrying out a coupling reaction on BNA-B and 4-formyl phenylboronic acid to prepare 4-(4-(4-formyl phenyl)-1, 8-naphthalimidoyl) butyric acid (FNA-B); and the compound FNA-B and cellulose acetate (CA) are subjected to an esterification reaction, such that the cellulose acetate-based 1, 8-naphthalimide fluorescent probe FNA-B-CA is prepared. The compound can specifically recognize hydrazine, after hydrazine is added into a DMF / H2O solution of FNA-B-CA under the irradiation of 365nm ultraviolet light, the fluorescence color of the solution is changed from bright blue to colorless, the detection limit of hydrazine reaches 8.4 * 10 <-8 > M, and the compound has a good application prospect as a fluorescent probe for detecting hydrazine.

The invention relates to the technical field of perovskite solar cells, in particular to an interface modification layer material, a perovskite solar cell and a preparation method of the perovskite solar cell. The material of the interface modification layer comprises a sulfonic acid modified aromatic diimide compound. The perovskite solar cell comprises a transparent conductive substrate, a hole transport layer, a perovskite layer, an electron transport layer and an electrode layer, wherein an interface modification layer made of the interface modification layer material is arranged between the perovskite layer and the electron transport layer. The interface modification layer prepared from the sulfonic acid modified aromatic diimide compound is introduced between the perovskite layer and the electron transport layer, so that perovskite surface defect passivation and energy level matching can be realized at the same time, the electron extraction efficiency is remarkably improved, the compound loss is reduced, and the photoelectric conversion rate of the cell is improved.

The invention belongs to the technical field of gearbox oil preparation, and particularly relates to gearbox oil and a preparation method thereof. The gearbox oil is prepared from the following raw materials: O, O '-diisoamyl dithiophosphate sodium salt, isooctyl acidic phosphate octadecylamine, 4, 4'-methylene bis (2, 2, 6-trimethyl-1, 3-pentanedione)-1, 2, 4-trimethyl-1, 3-pentanedione, 2, 4, 6-trimethyl-1, 3- The lubricating oil is prepared from 2, 6-di-tert-butylphenol), dialkyl dithiocarbamate, triethanolamine borate, methylbenzotriazole, a 2-butyl acrylate homopolymer, a hydrogenated styrene-diene copolymer, boronized polyisobutylene succinimide and the balance of base oil. The base oil is prepared from dipentaerythritol ester, poly-alpha-olefin, palm oil, 1-n-butyl naphthalene and dodecylphenol. According to the gearbox oil disclosed by the invention, the raw materials have a synergistic effect, so that the prepared gearbox oil has very good oxidation stability, corrosion resistance and wear resistance.

The present invention provides a degradable crosslinking agent that has high solubility in a solvent and is not susceptible to poor curing. The present invention is a crosslinking agent comprising a compound represented by formula (1) (In formula (1): n ≥ 0, k ≥ 0, and m ≥ 0; R1, R2, and R3 independently include, at a terminal end, one or more reactive functional groups selected from the group consisting of a hydroxyl group, an amino group, a hydrazide group, a thiol group, an isoprenyl group, a crotonamide group, a crotonate group, a carboxylic acid, an acid anhydride group, a vinyl group, an allyl group, an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a hydroxysilyl group, an epoxy group, an oxetane group, an oxazoline group, an isocyanate group, a carbodiimide group, a methylol group, a silanol group, and an alkoxysilyl group, and includes a single bond, a group including a siloxane structure, or a hydrocarbon group which may have a substituent or a hetero atom; A1 to A8 are independently a carbonyl group or a single bond, and at least one of A1 and A2 is a carbonyl group, at least one of A3 and A4 is a carbonyl group, at least one of A5 and A6 is a carbonyl group, and at least one of A7 and A8 is a carbonyl group; and each Z is independently a group containing a siloxane structure or a hydrocarbon group which may have a hetero atom.) (a) When n = 0, R1 and R2 are different; (b) when n ≥ 1 and k = 0, (b-1) R1 and R2 are different, and / or (b-2) at least one Z having an asymmetric structure is included; and (c) when n ≥ 1 and k ≥ 1, at least one of (c-1) R1, R2, and R3 is different, and / or (c-2) at least one Z having an asymmetric structure Z is included.

The invention discloses an organic semiconductor heterojunction photoelectric self-adaptive memristor and a preparation method thereof, and belongs to the field of neuromorphic devices, and the memristor sequentially comprises a substrate, a bottom electrode, a lower active layer, an upper active layer and a top electrode from bottom to top; the upper active layer is prepared from an organic material zinc phthalocyanine, and the lower active layer is prepared from an organic material N, N-tricosylperylene-3, 4, 9, 10-tetracarboxylic diimide. The memristor prepared by the invention realizes simulation of desensitization behavior and retina light adaptation function, and adaptivity modes are switched according to a stimulation type time-sharing trigger mechanism to support multi-mode perception and adaptive information processing in a dynamic environment, so that the development of a neuromorphic device for simulating the adaptivity function of a biological sensory system is promoted.

A process for preparing a carbodiimide includes (i) providing a mixture including one or more isocyanates and a catalytic compound, and (ii) subjecting the mixture obtained in (i) to reaction conditions in a gas atmosphere. The catalytic compound includes a metal and oxygen, wherein the metal is one or more of Mo and W. and at least a portion of the metal in the catalytic compound is bound to oxygen via one or more single bonds, via one or more double bonds, or via one or more single and double bonds. The reaction conditions in the gas atmosphere take place at a temperature in a range of from 45 to 220° C.

The invention belongs to the technical field of energy storage materials, and particularly relates to an aqueous ammonium ion battery electrode material based on perylene diimide, a preparation method and application. Firstly, a perylene diimide compound and a preparation method are provided, the material is stable, the material is rich in carbonyl structures, and enol type conversion can be carried out in the charging and discharging process to combine / release ammonium ions to complete charge storage; the invention also provides a water-based battery prepared from the perylene diimide compound and a preparation method, and the water-based battery has reversible specific capacity of 190.62 mAh / g in 1M (NH4) 2SO4 solution and current density of 1A / g, and shows excellent rate capability. After 1000 cycles of continuous charging and discharging in a 1M (NH4) 2SO4 solution and at the current density of 10A / g, the lithium ion battery still has the specific capacity of 101.67 mAh / g, and the lithium ion battery is simple in preparation process, low in cost and wide in market application prospect.

The present invention belongs to the technical field of semiconductor materials, and discloses a polymer with alternating arrangement of perylene diimide and naphthalene diimide, and its preparation method and application. The preparation method of the polymer includes the following steps: mixing naphthalic anhydride, alkanolamine and an organic solvent, and reacting to obtain naphthalene diimide-diol; mixing naphthalene diimide-diol, bromoacetic acid, 4-dimethylaminopyridine, 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride and an organic solvent, and reacting to obtain naphthalene diimide-dibromide; mixing naphthalene diimide-dibromide, perylene diimide-diamine and an organic solvent, and reacting to obtain the polymer. The present invention takes naphthalene diimide and perylene diimide as the core structures, and through design and synthesis, obtains a polymer with good water and alcohol solubility. This polymer can integrate the physical and chemical properties of the above two structural units, providing a guarantee for its application as an electron transport layer material in solar cells.

The application discloses an anticoagulant biomaterial for blood purification and a preparation method and application thereof, and comprises the following steps: providing an amphiphilic copolymer P(AA-MMA); blending polyethersulfone, P(AA-MMA) and a solvent, stirring at a set temperature to obtain a casting solution, and preparing a blending membrane from the casting solution; soaking the blending membrane in a 2-morpholine-4-yl ethanesulfonic acid buffer solution containing argatroban, 1-ethyl-(3-dimethylaminopropyl) carbonyl diimide and hydroxy succinimide, and reacting at room temperature to obtain an argatroban grafted blending membrane, namely the anticoagulant biomaterial. The method improves the hydrophilicity of the membrane, reduces the albumin adsorption of the membrane, reduces the adhesion of platelets on the membrane, prolongs the coagulation time APTT, PT and TT of the membrane, and is better in biocompatibility and enhanced in anticoagulation performance.

This polybutylene terephthalate resin composition contains: a polybutylene terephthalate resin (A) having a terminal carboxyl group content of 25 meq / kg or less; and a cyclic carbodiimide compound (B). The content of a polyvalent hydroxyl group-containing compound (C-1), which is a polyhydric alcohol or a partial ester thereof, having a hydroxyl number of 200 or more is less than 0.05 parts by mass with respect to 100 parts by mass of the polybutylene terephthalate resin (A). The polybutylene terephthalate resin composition satisfies formula 1. In formula 1, a represents the carbodiimide group content (meq / kg) per 1 kg of the polybutylene terephthalate resin composition, and b represents the intrinsic viscosity (dL / g) of the polybutylene terephthalate resin (A).　Formula 1: (-15.4×b)+19.3≤a≤(-57.4×b)+59.3

The present invention relates to a method for recovering an expensive polar organic solvent from waste liquid containing a polyimide precursor, which is generated during the manufacture of a polyimide film. Specifically, the method comprises: a step of adding and stirring an amine-based organic compound, which prevents the aggregation of the polyimide precursor in the waste liquid, so as to cause a chemical reaction; a primary vacuum distillation step of separating out moisture contained in the waste liquid; and a secondary vacuum distillation step of separating out, on the basis of boiling points, a polar organic solvent contained in the waste liquid. According to the present invention, the imidization of the polyimide precursor in the waste liquid is prevented, and thus blocking or failure of equipment can be prevented and a high-purity polar organic solvent can be recovered at the same time.

The invention discloses a wavelength selective photoresponse strontium-based metal organic framework eutectic material as well as a preparation method and application thereof. A metal node of the material is strontium ions, N, N '-bis (5-isophthalic acid) naphthalimide is used as a ligand, anthracene and a derivative thereof are used as objects, N, N-dimethylformamide is used as a solvent, and the material is obtained through solvothermal reaction. The material is composed of an electron donor (D) and an electron acceptor (A), and is a strontium-based MOF eutectic with an infinitely extended pi stacked A-D-D-A configuration. The MOF eutectic material has lattice characteristics of a tetragonal crystal system, a space group is I 41 / a, and cell parameters are a = b = 28.42240 (10), c = 13.71600 (10), and alpha = beta = gamma = 90 degrees. Sr-NDI at An has unique wavelength selective photoresponse property: ultraviolet light triggers [4 + 4] dimerization of an object anthracene, red light excites [4 + 2] reaction of anthracene and singlet oxygen, and near-infrared light induces generation of free radicals.

The invention relates to an anti-blue-light optical protective film and a preparation method thereof, and belongs to the technical field of anti-blue-light optical elements, the protective film comprises 0.2-1.4 parts of a blue light absorbent, 9-27 parts of ultrapure water and 1-3 parts of polyvinyl alcohol, the blue light absorbent is prepared from the following components in parts by weight: 0.07 to 0.09 part of graphene quantum dots, 110 to 130 parts of absolute ethyl alcohol, 0.05 to 0.07 part of an amino nitrobenzene compound, 1 to 2 parts of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide and 0.3 to 0.6 part of N-hydroxysuccinimide; the preparation method comprises the following steps: mixing polyvinyl alcohol and ultrapure water, and sequentially swelling and dissolving to obtain a polyvinyl alcohol solution; then mixing the polyvinyl alcohol solution and the blue light absorbent to obtain a mixed material; finally, a glass substrate is coated with the mixed material, then drying is conducted, and the anti-blue-light optical protection film is obtained.The anti-blue-light optical protection film prepared through the blue light absorbent does not change the high light transmittance of the visible light area of the optical film, and meanwhile harmful blue light can be absorbed.

The application discloses a siloxane D-A-D type perylene diimide small-molecule electronic transport layer and a preparation method thereof. Bromine perylene diimide is reacted with a primary amine containing a siloxane end group, and then is coupled with triphenylamine through a Suzuki coupling reaction to synthesize a small-molecule conjugated electrolyte. The siloxane D-A-D type perylene diimide small-molecule electronic transport layer has the following beneficial effects: first, the secondary amine in the side chain can form hydrogen bonds with F and H in the active layer, improve the interface compatibility, and improve the contact with the active layer; second, the D-A-D structure can realize intramolecular charge transfer, and excellent electron mobility can be exhibited; third, a good n-type self-doping is obtained, the work function of a high-stability metal Ag can be reduced, an ohmic contact is formed, and therefore the photovoltaic performance of a device is significantly improved; fourth, the stability can be improved due to the hydrophobicity of the siloxane; and finally, triphenylamine has a special non-planar molecular structure, and can inhibit excessive aggregation of the material.

The invention relates to a thermoplastic composition comprising, based on the weight of the composition, (A) 40 to 70% by weight of an aromatic polycarbonate, (B) 20 to 40% by weight of a polyester, (C) 1 to 15% by weight of an impact modifier, (D) 0.1 to 10% by weight of a hydrolysis stabilizer composition comprising at least one compound containing a diimide function, (E) 0 to 5% by weight of further components, the total amount of (A) to (E) is 100% by weight, and wherein the composition is selected to have a combination of at least 50 kJ / m2 of an initial notched Izod impact, determined according to ISO 180-1A at a temperature of 23 DEG C, at least 70% of a notched Izod impact retention, determined according to the method described in the specification, a heat distortion temperature of at least 90 DEG C as determined according to ISO 75A lay-flat mode under a load of 1.8 MPa.

The invention belongs to the technical field of medicine synthesis processes, and particularly relates to a preparation method of high-yield and high-purity buspirone hydrochloride. According to the method, 8-(2-pyrimidinyl)-8-aza-5-5-azonium spiro [4.5] decane hydrobromide (pyrimidino piperazine quaternary ammonium salt for short) and 3, 3-tetramethylene glutarimide are taken as raw materials, a mixed solvent of methylbenzene and n-amyl alcohol and / or n-hexanol is taken as a solvent, buspirone can be generated in the presence of sodium carbonate without adding a phase transfer catalyst, and buspirone can be obtained through acid adjustment and extraction. After toluene reverse phase impurity removal, a water phase is adjusted to be alkaline, an ethanol solution of hydrogen chloride is added after toluene extraction, and buspirone hydrochloride solid is directly separated out. The preparation process has a very good cleaning effect on impurities, and the obtained buspirone hydrochloride is high in purity, high in process yield, good in atom economy and low in output of three wastes.

The invention provides a perylene diimide derivative based covalent organic framework material and a covalent organic framework compound which can be used for photocatalysis. The synthesis method of the compound is simple and green, raw materials are cheap and easy to obtain, the whole synthesis process is simple, and the compound is expected to be put into industrial production. In addition, the compound has excellent photocatalytic performance.

The present invention provides a gasoline engine lubricating oil composition comprising the following components: (A) an organophosphorus compound, accounting for 0.05% to 10% of the total mass of the composition; (B) an alkyldiphenylamine, accounting for 0.05% to 5% of the total mass of the composition; (C) polyisobutylene succinimide, accounting for 2% to 30% of the total mass of the composition; (D) a sulfonate and / or a sulfurized alkylphenol, accounting for 0.2% to 10% of the total mass of the composition; (E) a zinc dialkyl dithiophosphate, accounting for 0.2% to 10% of the total mass of the composition; (F) an organomolybdenum, accounting for 0.05% to 5% of the total mass of the composition; (G) an ethylene-propylene copolymer, accounting for 2% to 30% of the total mass of the composition; and (H) a major amount of a lubricating oil base oil. The structure of the organophosphorus compound is described in the specification. The gasoline engine lubricating oil composition of the present invention has excellent anti-wear, friction-reducing, antioxidant, and detergency properties, and can inhibit the formation of deposits in turbochargers.

The present invention relates to a hair coloring composition, particularly for hair, comprising: - at least one (poly)carbodiimide compound; - at least 4% by weight of at least one compound having at least one hydroxyl group, relative to the total weight of the composition; and - optionally at least one coloring agent selected from pigments, direct dyes, and mixtures thereof. The present invention also relates to a method for coloring hair keratin fibers and a device for coloring hair keratin fibers.

The present invention relates to a hair coloring composition, particularly for hair, comprising: - at least one (poly)carbodiimide compound, and - at least one non-carboxylic anionic thickening agent. The present invention also relates to a hair coloring process and a hair coloring device.

The application discloses a naphthalimide-naphthalimide dye, a preparation method thereof and an electrowetting display ink.The chemical structural general formula of the dye is as follows: the naphthalimide-naphthalimide dye is prepared by taking 4-diarylamino-substituted naphthalimide as an intermediate.The naphthalimide-naphthalimide dye provided by the application has a highest FoM of 2210.2, and is a single-molecule black dye suitable for electrowetting display.