1624 results about "Diphenylamine" patented technology

The invention relates to a lubricating oil composition having improved antioxidant properties, and which contains a molybdenum compound and an alkylated phenothiazine. Further, it may also include a secondary diarylamine, preferably an alkylated diphenylamine. This combination of additives provides improved oxidation control and friction modifier performance to the lubricating oil. The composition is particularly suited for use as a crankcase lubricant, or a transmission lubricant, including low levels and zero levels of phosphorus.

The present invention relates to a low phosphorus lubricating oil composition for internal combustion engines which demonstrates fuel economy benefits while also providing high temperature oxidation, piston deposits, and wear. The lubricating oil composition of the present invention comprises: a) major amount of a base oil of lubricating viscosity; b) from about 0.1 to 10 wt % of an overbased alkaline earth metal alkyl aryl sulfonate detergent having a total base number (TBN) of about 25 to 500; c) from about 0.02 to 10 wt % of a oxymolybdenum-containing complex; d) from about 0.1 to 5 wt % of a friction modifier; and e) from about 0.2 to 10 wt % of an antioxidant selected from the group consisting of a diphenylamine type, a sulfurized ester-containing compound and mixtures thereof; wherein the total concentration of the oxymolybdenum-containing complex and antioxidant must be at least 1.3 wt %, based on the total weight of the lubricating oil composition and wherein the phosphorus content of the total lubricating oil composition is 0.08 wt % or less, based on the total weight of the lubricating oil composition.

A low-phosphorus lubricating composition has less than 600 ppm phosphorus, comprising at least 85 weight % of a lubricating base blend, and an additive comprising the following, as weight % of the total composition:(1) an organomolybdenum compound at an amount which provides about 0.1-800 ppm Mo;(2) a hindered phenol at about 0.1-2%; and(3) a dithiocarbamate at about 0.1-2%; with a first proviso that where the dithiocarbamate does not comprise a metal dithiocarbamate, the additive additionally comprises:(4) an alkylated diphenylamine at about 0.1-2%, and with a second proviso that where the organomolybdenum compound comprises molybdenum dithiocarbamate, it is considered a metal dithiocarbamate for purposes of the first proviso[G1], but is considered an organomolybdenum compound for the purposes of calculation of the amount present in the total composition.

A lubricant composition is disclosed that comprises lubricating oil and a mixture of at least two antioxidants, the first antioxidant being a substituted diphenylamine and / or a heterocyclic amine and the second antioxidant being a substituted phenol. Also disclosed is a method of increasing the oxidation stability of a lubricating oil comprising adding thereto at least two antioxidants, the first antioxidant being a substituted diphenylamine and / or a heterocyclic amine and the second antioxidant being a substituted phenol.

The invention relates to ultra quick quenching oil and a preparation method thereof. The ultra quick quenching oil comprises the following raw materials in percentage by weight: 80 to 97 percent of refined mineral oil, 1 to 10 percent of cooling catalyst, 1 to 5 percent of antioxidant and 1 to 6 percent of anionic surfactant. The kinematic viscosity of the refined mineral oil at the temperature of 40 DEG C is 6 to 9 mm<2> / s; the cooling catalyst is a mixture of oily phenolic resin and polybutylene; the antioxidant is alkylated diphenylamine; and the anionic surfactant is petroleum sodium sulfonate. The preparation method of the ultra quick quenching oil is simple and convenient; the obtained quenching oil has the advantages of ultra high cooling speed, good thermal oxidation stability, long service life and continuous and stable property retention; little peculiar smell, smog and carbon deposit are produced, and the take-out consumption of a workpiece is low; and after the workpiece is quenched by adopting the quenching oil, the workpiece has the advantages of high and uniform surface hardness, deep quenching layer, low deformation, metallographic structure, good mechanical property and good brightness, the surface of the workpiece does not become black, and the workpiece is easily cleaned.

The invention provides a reversible overcharge protective electrolyte additive for a lithium battery and a preparation method thereof. The invention is characterized in that the additive contains at least one aromatic compound selected from amino-benzene, diphenylamine, triphenylamine, pyrrole, thiophene, phenylene sulfide and benzene, or at least one derivative thereof, the mass percentage of the additive in the electrolyte is in a range from 0.3 percent to 20 percent. An auxiliary solvent made of methylbenzene, dimethylbenzene, carbon tetrachloride or chloroform, in a volume less than 20 percent of the electrolyte, is added into the common electrolyte, to increase the dissolvability of the additive molecule in the electrolyte. Then the electrolyte additive is added. The additive molecule can rapidly undergo polymerization at a certain electric potential and form a polymer bridge between the anode and the cathode, and the electronic conductivity of the polymer bridge can reversibly change between insulation state and conduction state along with the voltage variation of the anode, thereby providing the battery with reversible overcharge protection.

The invention provides a ratio type fluorescent probe for distinguishing lipid droplets with different polarities. A chemical name is (E)-7-(N,N-diethylamino)-3-(3-(4-(diphenylamine)phenyl)acrylyl-2H-benzopyrone; N,N-diethylamino salicylic aldehyde reacts with ethyl acetoacetate to generate 3-acetyl-7-(diethylamino)coumarin; the product reacts with 4-(N,N-Diphenylamino)benzaldehyde (4) to obtain the fluorescent probe. The fluorescent probe has a two-photon property and an aggregation-induced light-emitting property; a whole body of the probe is electrically neutral and can be positioned in thelipid droplets with the different polarities very well. The probe has low toxicity, good optical stability and specific response on the polarities; detection on the polarities of the lipid droletps in organs and living bodies is realized. The invention further provides a synthesis method of the probe; the synthesis method has the advantages of simple steps, convenient for purification and high yield.

The invention relates to a special lubricating grease composition for a steel wire rope. The composition comprises the following components in percentage by weight: 2.0-5.2% of lithium 12-hydroxystearate soap, 0.5-1.3% of lithium stearate soap, 53.5-76% of mineral base oil, 15.0-40.0% of extract oil, 1.3-6.3% of microcrystalline wax and 0.2-1.2% of diphenylamine. The lubricating grease provided by the invention has the characteristics that blended base oil containing high-viscosity extract oil is utilized to prepare specific-thickness semi-fluid lubricating grease for the steel wire rope, theadhesion and infiltration capability of the product are improved, and the problems of oil splashing, loss, atmospheric environment pollution and the like of the existing product are solved; and a microcrystalline wax additive is used for improving the water resistance and protective properties of the lubricating grease for the steel wire rope. The lubricating grease provided by the invention has dropping point larger than 165 DEG C, is free of volatile solvent, is convenient for coating, has low production cost and enhanced lubrication effects, and can effectively meet the internal and external lubrication and protection requirements of the steel wire rope during operation.

The invention discloses a lubricating oil additive composite with oxidation stability and it comprises alkyl diphenylamine and ester shielding phenol.

The invention relates to a wire rope lubricating grease composition having dual effects of lubrication and anti-corrosion. The composition comprises the following components: 51.0 % to 72.5 % of No. 2 composite calcium sulfonate grease, 25.0 to 38.0 % of low-freezing-point base oil, 0.2 to 1.0 % of diphenylamine, 1.3 to 5.5 % of colloidal graphite and 1.0 to 4.5 % of ozocerite. According to the invention, the composite uses the specific composite calcium sulfonate grease as a base oil, and is added with the low-freezing-point base oil and various additives to further improve performance such as low-temperature resistance, anti-oxidation, wear resistance, and water resistance of the product, so that the wire rope lubricating grease having dual effects of lubrication and anti-corrosion can be obtained. The lubricating grease has dual effects of lubrication and anti-corrosion, and can delay corrosion and wearing speed of the wire rope. The product is suitable for lubrication and protection of various wire ropes under ocean climate conditions such as seaport, marine ship, offshore drilling platforms, etc.

The invention relates to a gear oil composition and applications thereof, mainly solving problems of abnormal gear wear and poor oxidation stability of an oil product which are caused by that the extreme pressure property of industrial gear oil in the prior art fails to satisfy a part of using requirements of the metallurgy industry. According to the technical scheme adopted by the gear oil composition, the gear oil composition comprises following components by weight: a) 100 parts of mineral base oil; b) 0.1-10.0 parts of an anti-wear reagent at extreme pressure; c) 0.01-2.0 parts of an antioxidant; d) 0.01-0.5 part of a metal deactivator and e) 0.01-1.5 parts of an oiliness agent, wherein the anti-wear reagent at extreme pressure is a mixture of sulfurized isobutylene and at least one selected from sulfurized olefin, phenyl sulfide, sulfurized aliphatic ester or amine thiophosphate diester; and the antioxidant is at least one selected from 2,6-di(tertbutyl)-p-cresol, 3.5-di(tertbutyl)-4-hydroxy phenyl acrylate, pentaerythrite tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate], N-phenyl-1-naphthylamine or alkylated diphenylamine. By the technical scheme, the problems are solved well and the gear oil composition can be used for industrial production.

The invention provides a compound with a D-(pi)-sigma-(pi)-A chemical structure. The compound has a chemical structure shown as formula (I), wherein L1 and L2 are selected from at least one of a single bond, C1-C20 alkylene, C3-C20 cycloalkylene, C3-C20 heterocyclylene, C6-C40 arylidene, C4-C40 heteroarylene, C10-C60 fused arylidene or C10-C60 fused heteroarylene; an electrondonor D is selected from C1-C20 alkyl, C3-C20 cycloalkyl, C1-C20 alkoxyl, C3-C20 heterocyclyl, C6-C40 aryl, C4-C40 heteroaryl, C10-C60 fused arylidene, C10-C60 fused heteroarylene, C12-C40 carbazyl and a derivative group of C12-C40 carbazyl, C12-C40 diphenylamine and a derivative group of C12-C40 diphenylamine, C18-C60 triphenylamine and a derivative group of C18-C60 triphenylamine, and C12-C40 acridinyl and a derivative group of C12-C40 acridinyl; an electron acceptor A is selected from a nitrogen-containing heterocyclic substituent, a cyan-containing substituent, a triaryl boron substituent, a benzophenone substituent, a heteroaromatic ketone substituent, a sulfone substituent and a phosphorus-containing oxyl substituent. The invention provides a series of bipolar materials with the D-(pi)-sigma-(pi)-A structure, and luminance and luminous efficiency EQE can be improved.

The invention discloses an ethylene propylene diene monomer rubber material for automobile cooling system sealing elements and a preparation method thereof, belonging to the field of rubber materials and preparation methods thereof. The ethylene propylene diene monomer rubber material disclosed by the invention is prepared from the following components in percentage by mass: 53-58% of ethylene propylene diene monomer unvulcanized rubber, 20-25% of high-wear-resistance carbon black, 5-10% of semi-reinforcing carbon black, 3-5% of zinc oxide, 0.5-1.0% of stearic acid, 1.0-1.5% of 4,4'-di(phenylisopropyl)diphenylamine, 0.5-1.0% of 2-thiol tolimidazole zinc salt, 2.0-2.5% of alpha,alpha'-bis(tert-butylperoxy)diisopropylbenzene and 1.5-2.0% of triallyl isocyanurate. The preparation method comprises the following steps: mixing master batch; carrying out two-section sulfurization on the master batch; and vulcanizing. The ethylene propylene diene copolymer rubber sealing element material disclosed by the invention has the advantages of high temperature resistance, overheated coolant immersion resistance and excellent low compression permanent set, improves the elasticity and compression permanent set of the rubber, and ensures the high strength of the rubber, thereby satisfying the service performance of the material.

The invention discloses an aluminium product chemical polishing solution composition with nitric acid free. The composition uses sulfuric acid and phosphoric acid as a basic solution, an additive is composed of aluminium sulphate (or aluminium nitrate), potassium permanganate, sodium nitrate, diphenylamine sulfonic acid sodium salt, tartaric acid and zinc sulfate. Polishing temperature is 110-150 DEG C, polishing time is 10s-120s when the polishing solution is used for polishing. The composition can ensure no nitrogen oxide yellow smoke harm, at the same time ensure the aluminium product having better polishing blare effect for reaching mirror surface brightness, and having little rate of weight loss.

A tertiary arylamine compound, such as N,N-diphenyl-4-aminobiphenyl, is Formed by reacting an arylbromidem such as 4-bromobiphenyl, and an arylamine, such as Diphenylamine, preferably in the presence of a palladium ligated catalyst.

The invention discloses a medium-voltage ethylene propylene rubber insulating material and a preparation method thereof. The medium-voltage ethylene propylene rubber insulating material comprises the following components in percentage by weight: 15-30 percent of ethylene-propylene-diene rubber, 9-20 percent of ethylene-propylene rubber, 4-10 percent of linear low-density polyethylene, 4-7 percentof zinc oxide, 0.1-0.4 percent of stearic acid, 5-35 percent of superfine talc powder, 4-7 percent of paraffin hydrocarbon oil, 0.5-3 percent of paraffin, 10-30 percent of calcining clay, 0.1-0.9 percent of surface active agent gamma-aminopropyltriethoxysilane, 0.4-1.8 percent of antiager 4,4'di(alpha,alpha dimethylbenzyl)diphenylamine, 0.5-1.5 percent of vulcanizer dicumyl peroxide and 0.3-1.4 percent of vulcanizing agent triallyl cyanurate. By synthesizing the performance of various materials and learning from strengths to offset their weaknesses, the aims of reducing the cost and improvingthe electric performance are achieved. Tests prove that the medium-voltage ethylene propylene rubber insulating material disclosed by the invention has the volume resistivity of 1014 ohm.m and the breaking-down field strength of larger than 30KV / mm and has the advantages of excellent electric performance, higher thermal ageing performance and physical and mechanical performance, simple preparation process and strong operability.

The invention relates to the technical field of perovskite solar cells, and aims at providing a dinaphtho heterocyclic ring small molecular hole-transport material as well as a synthesis method and application thereof. An effective component of the material is any one of dioxaanthanthrene, dithioanthanthrene, dinaphthofuran, dinaphthothiophene or dinaphthopyrrole. According to the synthesis methoddisclosed by the invention, five kinds of small molecular hole-transport materials are designed and synthesized by taking the dioxaanthanthrene, the diethianthanthrene, the dinaphthofuran, the dinaphthothiophene and the dinaphthopyrrole as nuclei and introducing dialkoxy diphenylamine group to an active site. The material disclosed by the invention has the advantages of low synthesis cost, good film forming property and high hole mobility; the material as a non-doped hole-transport material can be applied to perovskite solar cell devices, so that higher device efficiency is achieved.

The invention discloses a silane coupling agent and a preparation method thereof. The method comprises the steps of: mixing a coupling agent (gamma-glycidyl ether oxopropyl trimethoxy-silane) and aminophenol p-diphenylamine (PPDA) according to a certain molar ratio; before temperature raising and heating, introducing nitrogen till the end of reaction, and continuously reacting for a period of time under the condition of magnetic force stirring, thus obtaining the silane coupling agent. The prepared silane coupling agent can be used for inorganic filler such as white carbon black and argil; compared with white carbon black modified with the common silane coupling agent, white carbon black modified with the silane coupling agent disclosed by the invention has an excellent aging-preventing function besides the enhancement of the compatibility between the filler and plastic matrixes, and thus the service life of mad products can be prolonged; and when applied to butylbenzene and hevea rubber, the silane coupling agent has excellent performance superior to 2-(gamma-( triethoxy) propyl group) tetrasulfide, so the silane coupling agent can completely replace the 2-(gamma-( triethoxy) propyl group) tetrasulfide to be applied to some rubber.

The invention discloses a regenerating technique of waste lubricant in the product technical recycling domain, which comprises the following steps: depositing waste lubricant at 45-55 Deg C; centrifuging; separating; filtering; heating 60m3 waste lubricant to 50 Deg C; adding NaOH solution; stirring; heating to 55 Deg C; adding hydrogen oxide solution; heating continuously to 65 Deg C; depositing 24h; cooling to indoor temperature; discharging lower oil; adding 0.5% anhydrous AlCl3 in the upper oil; stirring to heat to 80 Deg C; stirring under constant temperature for 1h; cooling to indoor temperature; decoloring; filtering; adding 0.2% additive to obtain the standard lubricant; adopting composite dialkyl diphenylamine and polymethacrylate as additive.

The invention discloses triphenylamine spirofluorene derivatives and uses thereof. The general chemical structure of the triphenylamine spirofluorene derivatives is shown in the specification, wherein triphenylamine spirofluorene is the main body, and A is carbazole, alpha-carboline, beta-carboline, gamma-carboline, pyridine, diphenylamine, dimethoxydiphenylamine, dimethyldiphenylamine or 3,6-di-tert-butylcarbazole. The derivatives are good in thermal stability and hole conductivity. By simple methods, the degree of conjugation of the main body material is effectively controlled, the molecular weights of compounds are increased, the triplet state energy level and the glass-transition temperature of a material are largely increased, and the threshold voltage is obviously reduced. Polarity can be adjusted by adjusting donor / acceptor electronic groups. The bipolar performance is improved by adjusting the intensity of the donor / acceptor electronic groups. Compared with common phosphorescence main body materials, performance of devices prepared from the derivatives is improved and the derivatives can be widely applied in the field of organic electroluminescence.

The invention provides a method for preparing 4-amino diphenylamine by catalytic hydrogenation. The method adopts two sections of hydrogenation reaction processes, and comprises the following steps: performing the condensation reaction of condensation solution formed by the condensation reaction of nitrobenzene and aniline which serve as raw materials under an alkaline condition by using using a noble metal hydrogenation catalyst and a nickel catalyst sequentially so as to make the conversion rate of 4-nitroso diphenylamine, 4-nitro diphenylamine and azoxybenzene achieve 100 percent; and separating the noble metal hydrogenation catalyst and the nickel catalyst by using a two-stage membrane separation component system to avoid the loss of small particles of catalyst. At the same time, the method has high degree of automation and can easily realize the continuous hydrogenation process.

The invention discloses special lubricating oil for a fuel gas engine of a public transport automobile. The special lubricating oil is prepared from blended base oil, binary ethylene-propylene rubber, polymethacrylate, alkylphenol calcium sulfide, high-base-number calcium alkylbenzenesulfonate, polyisobutylene succinimide, boronated polyisobutylene succinimide, alkylated phenyl-alpha-naphthylamine, p,p'-dioctyl diphenylamine, a hindered phenol type antioxidant, dialkyl molybdenum dithiocarbamate, copper nanoparticle anti-wear additives, methyl silicone oil and thiadiazole polysulfide. According to the lubricating oil composition oil product, the sulfate ash content is lower than 0.5%, the content of phosphorus is lower than 0.03%, and the base number is 3-8mgKOH / g. According to the special lubricating oil for the fuel gas engine of the public transport automobile, aiming at the special requirements of the public transport automobile on engine oil, different additive varieties and charging sequences are adopted, so that physical and chemical indicators and use performance of the special lubricating oil are better than natural gas engine lubricating oil of the same grade, and the special lubricating oil has excellent cleaning and dispersion properties, lubricating property, abrasion resistance and oxidation resistance.

Polyimides having a desired combination of high thermo-oxidative stability, low moisture absorption and excellent chemical and corrosion resistance are prepared by reacting a mixture of compounds including (a) 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA), (b) 3,4'-oxydianiline (3,4'-ODA), and (c) 5-norbornene-2,3-dicarboxylic anhydride (NA) in a high boiling, aprotic solvent to give 5 to 35% by weight of polyamic acid solution. The ratio of (a), (b), and (c) is selected to afford a family of polyimides having different molecular weights and properties. The mixture first forms a polyamic acid precursor. Upon heating at or above 300° C., the polyamic acids form polyimides, which are particularly suitable for use as a high temperature coating, adhesive, thin film, or composite matrix resin.

The present invention relates to diphenyl amine derivatives having luminescent properties, and particularly to diphenyl amines substituted with various electron-donating or electron-withdrawing groups. The compounds of the present invention show blue or blue-green luminescence, and luminescence of the compounds herein can be achieved by UV or visible light, thus being useful as a fluorescent dye or fluorescent material for an organic electroluminescence device or display.

A lubricating oil composition comprising: (A) a base stock; and (B) a liquid additive package. The liquid additive package comprises: (i) an alkylated diphenylamine; (ii) at least 5 weight % of a phenyl naphthylamine, based on the weight of the additive package; and (iii) a sulfur-containing phenol.

The invention discloses diamine monomer containing diphenylamine-fluorene, a preparation method and the application of same in polyimide preparation and belongs to the technical field of organic compound preparation. The monomer is N, N-dual (4-aminophenyl)-9, 9-dimethyl fluorene. A synthetic method comprise the following two steps that 1, under the action of cesium fluoride, 2 amino-9, 9-dimethyl fluorene and p-fluoronitrobenzene are subjected to nucleophilic substitution, and the N, N-dual (4-aminophenyl)-9, 9-dimethyl fluorene is obtained; then Pd / C serves as a catalyst and hydrazine hydrate serves as a reducing agent, and the N, N-dual (4-aminophenyl)-9, 9-dimethyl fluorene is obtained. According to the application, the N, N-dual (4-aminophenyl)-9, 9-dimethyl fluorene diamine monomer is involved into reaction with various dianhydride, and polyimide is obtained through the preparation. According to the diamine monomer containing the diphenylamine-fluorene, the preparation method and the application of same in polyimide preparation, by means of the structure peculiar to the diamine monomer, obtained polymer has good solubleness, and the unique photoelectric property is achieved; the diamine monomer and the polyimide obtained with the diamine monomer have vast application prospect in such fields as electroluminescence, cavity transmission and electrochromism.

The use of an additive including a mixture of oligomers that is produced from the reaction of aromatic amines chosen from:(i) the reaction with one another of diphenylamine (DPA) compounds of formula (I) below:wherein the groups R1 and R2 stand for, independently of one another, a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms,(ii) the reaction with one another of phenyl-α-naphthylamine (PAN) compounds of formula (II) below:wherein the group R3 stands for a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms, and(iii) the reaction of a (DPA) compound of formula (I) above with a (PAN) compound of formula (II) above as an agent for the stabilization of a lubricating composition for a conveyor chain subjected to a temperature of at least 120° C.

The invention relates to a rubber packing leather material used for a brake cylinder system. The rubber packing leather material comprises the following ingredients in parts by weight: 70-80 parts of butyronitrile rubber (N250S), 20-30 parts of butyronitrile rubber (N240S), 4-6 parts of zinc oxide (with the purity of 99.8%), 1.5-2.0 parts of stearic acid (industrial grade), 4.0-5.0 parts of modified methyl acrylic acid magnesium (modified), 1.0-2.0 parts of nano SiO2, 1.0-2.0 parts of Molijie TM-80, 2.0-2.5 parts of anti-aging agent RD (industrial grade), 0.5-1.5 parts of anti-aging agent BLE (Diphenylamine Condensation Compound) (industrial grade), 1.5-2.0 parts of vulcanizing agent DCP (Dibasic Calcium Phosphate) (industrial grade), 100-120 parts of carbon black, 15 parts of plasticizer MBA and 10 pars of plasticizer MDA. The rubber packing leather material used for the brake cylinder system, provided by the invention, is resist in grease, resist in fatigue, strong in permanent deformation capability resistance and long in service life.