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451 results about "Naphthylamine" patented technology

Nitrogen substituted aromatic hydrocarbon existing as two different isomers, both carcinogenic and used in dyes.

Electrical smoking system and method

InactiveCN1633247AReduce gaseous componentsIncandescent ignitionCigar manufactureIntegratorAcrylonitrile
An electric smoking system includes a cigarette including a cylindrical tobacco web partially filled with tobacco material to define a filled tobacco rod portion and an unfilled tobacco rod portion, and an electric lighter. The wrapper includes a filler of ammonium-containing compounds effective to reduce the gaseous constituents of the smoke produced during smoking. The system includes a pilot burner including at least one heating vane and a controller adapted to control heating of the heating vane. The lighter is configured to at least partially contain the cigarette such that the heater blade heats the heating region of the cigarette. Manipulating the controller to limit the heating of the heater blades to a predetermined temperature range which allows the delivery of the smoke generated when the portion of the tobacco rod is heated while at least reducing the amount of smoke present in the smoke as compared to smoking a cigarette having only calcium carbonate as filler. A gaseous component. The gaseous components that can be reduced include carbon monoxide, 1,3 butadiene, isoprene, acrolein, acrylonitrile, hydrogen cyanide, 0-toluidine, 2-naphthylamine, nitrogen oxide, benzene, NNN, Phenol, catechol, benzanthracene and benzopyrene.
Owner:PHILIP MORRIS PROD SA

Lubricant composition

A lubricant composition is suitable for use in diesel engines and is resistant to degradation by oxidative by-products of biodiesel fuel. The composition includes (A) a base oil, (B) at least one diphenylamine antioxidant, and (C) at least one antioxidant. The antioxidant (C) is selected from the group consisting of a sulfur containing phenolic antioxidant, a phenyl-alpha-naphthylamine antioxidant, and combinations thereof. The lubricant composition is formed using a method. In the method, the (A) base oil has an initial oxidation value measured according to ASTM D 6186. In addition in the method, the lubricant composition includes up to about 6 wt % of the biodiesel fuel and has a final oxidation value measured according to ASTM D 6186 that is equal to or greater than the initial oxidation value of the (A) base oil.
Owner:BASF AG

Diarylamine novolac resin

A novel diarylamine novolac resin such as a phenylnaphthylamine novolac resin, and further a resist underlayer film-forming composition in which the resin is used in a lithography process for manufacturing a semiconductor device. A polymer including a unit structure (A) of Formula (1):(in Formula (1), each of Ar1 and Ar2 is a benzene ring or a naphthalene ring). A method for manufacturing a semiconductor device, including: forming an underlayer film on a semiconductor substrate with the resist underlayer film-forming composition; forming a hardmask on the underlayer film; forming a resist film on the hardmask; forming a resist pattern by irradiation with light or an electron beam followed by development; etching the hardmask with the resist pattern; etching the underlayer film with the hardmask thus patterned; and processing the semiconductor substrate with the underlayer film thus patterned.
Owner:NISSAN CHEM IND LTD

Liquid Additives for the Stabilization of Lubricant Compositions

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.
Owner:CHEMTURA CORP

Method for enhancing the oxidation and nitration resistance of natural gas engine oil compositions and such compositions

The resistance to oxidation and nitration of a gas engine oil is improved by the use of a combination of a hindered phenolic antioxidant and an (alkylated) phenyl-α-naphthylamine antioxidant. The additional use of an organo molybdenum compound further enhances the resistance to oxidation and nitration.
Owner:EXXON RES & ENG CO

Meteorologic balloon and production method thereof

ActiveCN101592742AThere will be no problem of uneven distributionAgainst destructive powerInstrumentsPotassium hydroxideDioctyl sebacate
The invention discloses a meteorologic balloon and a production method thereof. The raw materials consist of a solid raw material, an oily raw material and a gluey raw material; the solid raw material comprises the following components by weight: 0 to 0.30 portion of potassium hydroxide, 0 to 0.15 portion of casein, 0 to 0.10 portion of peregal O, 1.00 to 3 portions of sulfur, 1.00 to 2 portions of N-phenyl-2-naphthylamine, 1.00 to 2 portions of N-phenyl-N'-isopropyl-ursol, 1.50 to 3 portions of ethyl-phenyl-zinc dithiocarbamate, 0.20 to 5 portions of zinc oxide, and 5 to 30 portions of chloroprene polymer; the oily raw material is dioctyl sebacate, and the weight rate of the dioctyl sebacate is 5.00 to 10.0 portions; and the gluey raw material is centrifugally-concentrated natural latex, and the adding amount of the centrifugal concentrated natural latex is 100 portions. The weight of the meteorologic balloon is 1,600 to 1,700 grams, the length of the balloon body is 3.05 to 3.55 meters, the width of the ball handle is 10 to 11 centimeters, and the length of the ball handle is 12 to 16 centimeters. The meteorologic balloon can adapt to the requirement of probing high-altitude meteorological elements of more than 35,000 meters, has the advantages of good aging resistance, high blastoff height, long balloon service time and the like, and can effectively overcome the morning-evening difference.
Owner:CHEMCHINA ZHUZHOU RUBBER RES & DESIGN INST

Metal antirust agent containing modified medical stone powder

The invention discloses a metal antirust agent containing modified medical stone powder. The antirust agent is prepared from the following raw materials in parts by weight: 100-105 parts of castor oil, 1.5-3 parts of ferrocene, 1-2 parts of polyisobutene, 0.6-1.2 parts of bitertanol, 0.5-1.5 parts of 2-aminoethyl heptadecenyl imidazoline, 0.8-1.6 parts of beta-naphthylamine, 1-2 parts of N-phenyl-2-naphthylamine, 0.6-1.1 parts of zinc dialkyl dithiophosphate, 1-2 parts of sodium dodecyl benzene sulfonate, 0.8-1.6 parts of propanediol sebacate polyester, 4.2-5.2 parts of film-forming resins and 1.3-2.1 parts of modified medical stone powder. The metal antirust agent has excellent contact antirusting performance and good gas-phase antirusting effect and has good gas-phase antirusting effect and contact antirusting effect on steels and brasses.
Owner:汕头市联达包装材料有限公司

Novel rubber packing plate and production technique thereof

The invention relates to a novel rubber pad, the parts by weight of components of which are: 80-95 portions of ethylene propylene diene monomer rubber, 5-20 portions of elastomer, 0.6-2.5 portions of sulfur, 0.5-2.0 portions of dicumyl peroxide, 0.5-1.5 portions of 2-Mercaptobenzothiazole, 0.8-1.6 portions of tetramethylthiuram disulfide, 2 portions of p-Phenylenediamine or naphthylamine antioxidant, 60-90 portions of carbon black, 15-45 portions of argil, 15-50 portions of calcium carbonate and 35-45 portions of operation oil. Production technique of the pad is according to the processes of mixing - plasticizing - banburying - refining - adding sulfidizer - preparing material - diefilling and sufidizing - finishing - inspecting packages and putting in storage. The invention has the advantages that: the rigidity, the vibration and the noise of railway are reduced; the service life and compression deforming quality of the pad are enhanced; elasticity loss of the pad and line maintenance expense are reduced; the invention also has the advantages of sufficient raw materials, low cost, innocuity and no pollution.
Owner:四川宏亿复合材料工程技术有限公司

Method for detecting 10 types of aromatic amines compounds in cigarette mainstream smoke by liquid chromatography-tandem mass spectrometry

ActiveCN102608232ASimplified processing stepsSaving volume and smoking experiment timeComponent separationToluidineAniline
A method for detecting 10 types of aromatic amines compounds (including aniline, ortho toluidine, m-toluidine, p-aminotoluene, m-phenylenediamine, m-methoxyaniline, 1- naphthylamine, 2- naphthylamine, 3- aminobphenyl and 4- aminobphenyl) in cigarette mainstream smoke by liquid chromatography-tandem mass spectrometry is characterized in that a Cambridge filter and an absorbing bottle containing 5%of HC1 solution respectively gather the aromatic amines compounds in a particle phase matter and a gas phase matter of mainstream smoke, after the 5%HCI solution is used for extracting the aromatic amines compounds on the filter, the aromatic amines compounds are purified by an HLB (hydrophile-lipophile balance) solid-phase extraction column, and a liquid chromatography-tandem mass spectrometry instrument is used for determining the 10 types of aromatic amines in the mainstream smoke in cigarettes. Compared with an existing GC-MS (gas chromatography-mass spectrometer) analysis method for detecting aromatic amines in mainstream smoke of cigarettes, the method does not need derivatization reaction or liquid-liquid extraction operation, greatly simplifies pretreatment steps of samples, improves analysis efficiency, and can more comprehensively detect harmful aromatic amines compounds in mainstream smoke of cigarettes.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Middle/low concentration positive quality control liquid for urine analysis

ActiveCN102226805AReduce mutual interferenceReduce the impact of quality control effectsBiological testingBovine serum albuminDirect bilirubin
The invention discloses a middle / low concentration positive quality control liquid for urine analysis. The positive quality control liquid comprises a buffer solution with a pH value of 4.5 to 8.5 and a concentration of 20 to 200 mmol / L, a surfactant with the concentration of 20 to 200 mmol / L, a carbohydrate protectant with the concentration of 20 to 200 mmol / L, a protein protectant with the concentration of 20 to 200 mmol / L, anhydrous glucose with the concentration of 300 to 990 mg / L, bovine serum albumin with the concentration of 100 to 1000 mg / L, bovine hemoglobin with the concentration of0.6 to 5 mg / L, esterase with the concentration of 2 to 20 mg / L, acetone or lithium acetoacetate or sodium ethyl acetoacetate or ethyl acetoacetate with the concentration of 50 to 900 mg / L, and a direct bilirubin or naphthylamine salt with the concentration of 3 to 40 mg / L. Quality control objects of corresponding projects can be added as needed. Compared with the prior art, the quality control liquid has the advantages of good stability, high sensitivity, less toxicity of each component, wide source and low production cost.
Owner:URIT MEDICAL ELECTRONICS CO LTD

Lubricating oil composition used in rotary screw rod air compressor and preparation method thereof

The invention provides a lubricating oil composition used in a rotary screw rod air compressor. The lubricating oil composition comprises the following components in percentage by mass: 0.1-3.0% of antioxidant, 0.01-1.5% of metal antirust agent, 0.01-1.5% of metal deactivating agent, 0.5-3.0% of anti-wear reagent at extreme pressure, 0.1-2.0% of pour point depressant, 10-500ppm of defoaming agent and the balance of hydrofined mineral oil, wherein the antioxidant is one or more of 2,6-ditertiary butyl p-cresol, phenyl-alpha-naphthylamine, dialkyl diphenylamine, butyl octyl diphenylamine and 3,5-ditertbutyl-4-hydroxy hydroxyl acetic acid ester; the metal deactivating agent is one or more of benzotriazole, a derivative of benzotriazole, thiadiazole and a derivative of thiadiazole; the metal antirust agent is one or more of long-chain carboxylic acid, alkyl benzoic acid, oleamide, oleoyl amino acid, benzotriazole and derivative of benzotriazole. The invention further provides a preparation method of the lubricating oil composition.
Owner:KASONG SCI & TECH

Bisazo solvent dye preparation method and uses

InactiveCN1546575AGood stability and solubilitySimple methodAzo dyesInksSodium acetateKetone
The invention relates to a process for preparing bisdiazo solvent dye which comprises, dissolving 1-naphthylamine into 0.5-5wt% of water solution of hydrochloric acid or sulfuric acid, charging sodium acetate till pH=3-4, charging diazonium salt of arylamine for coupling reaction at 0-15 deg. C, neutralizing the reaction mixture with alkali till pH=8-13, filtering, water scrubbing to obtain the monoazo dye, subjecting monoazo dye to diazo reaction with sodium nitrite, coupling the reacted mixture and 1, 8 di-naphthylamine with the condensation product of alkyl ketone R2-CO-R3, neutralizing the coupling product with alkali till pH=8-13, processing 90-100 minutes at 90-100 deg. C, filtering, rinshing to absence of chloride ion.
Owner:HUBEI DINGLONG CO LTD

Peptoid and preparation method as well as application thereof

The invention provides a peptoid as well as a preparation method and application thereof. The peptoid comprises the following subunits: ethylenediamine (I), piperonylamine (II), beta-alanine (III), 1-naphthylamine (IV) and cysteine (V). The peptoid is simple in synthesis, has strong combining capacity with alpha-synuclein, can effectively screen the serum of PD patients and able-bodied persons through alpha-synuclein in the serum, and provides a novel liquid biopsy method and concept for diagnosis and monitoring of the Parkinson's disease.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Active yellow SHE, synthetic method and its composite active yellow dye

InactiveCN1569969AReduce generationTo achieve the purpose of clean productionDisazo dyesYELLOW DYECyanuric acid
Disclosed is a yellow SBE monomer which is prepared by coupling 3,6,8-trisulfonic acid -2- naphthylamine diazonium with meta-amino-benzeneamine acetylized hydrochlorate, primary condensation with cyanuric chloride, then carrying out second condensation to p(beta-sulfate ethyl sulfone)aniline diazonium salt and 2,4-disulfonic phenylamine coupling liquid, and drying.
Owner:江苏申新染料化工股份有限公司

Method for detecting seven aromatic amine compounds in human urine through liquid chromatography-series mass spectrometry

The invention provides a method for detecting seven aromatic amine compounds in human urine through a liquid chromatography-series mass spectrometry. The method is to detect aniline, o-toluidine, m-toluidine, 1-naphthylamine, 2-naphthylamine, 3-aminobphenyl and 4-aminobphenyl, and is characterized by comprising the steps of hydrolyzing urine via concentrated HCl, purifying the sample through PAH (Polycyclic Aromatic Hydrocarbon) molecular imprinting columns, and analyzing through the liquid chromatography-series mass spectrometry (LC-MS / MS). Compared with the prior art, the method has the advantages that the LC-MS / MS method is adopted, so that higher sensitivity is achieved, and the pre-processing of the sample can be greatly simplified (about 2 hours are consumed); the pre-processing through a GC-MS (Gas Chromatography-Mass Spectrometer) method as shown in a literature is complicated and wastes time (by more than 6 hours). The method provided by the invention can effectively improve the analyzing efficiency, and is relatively suitable for analyzing seven aromatic amine compounds in human urine.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Electrolytes Comprising Polycyclic Aromatic Amine Derivatives

A non-aqueous electrolyte composition, useful in batteries, capacitors and the like, said electrolyte composition comprising an electrolyte support salt, a non-aqueous electrolyte carrier, and a polycyclic aromatic amine, e.g., a naphthyl amine.
Owner:LANXESS SOLUTIONS US INC

Preparation method for synthesizing naphthylamine by catalytic hydrogenation

The invention discloses a preparation method for synthesizing naphthylamine by catalytic hydrogenation. The method comprises the following steps: firstly preparing a nickel-copper composite catalyst for synthesizing naphthylamine by catalytic hydrogenation, adding nitronaphthalene, ethanol and the prepared nickel-copper composite catalyst to react for 4-15 hours under the pressure of 3.0-5.0 MPa and the reaction temperature of 80-120 DEG C to obtain the naphthylamine, wherein the reaction conversion rate is not less than 99.0%, and the yield is not less than 99.0%. The invention has easily-obtained materials, high selectivity, high yield and simplicity in operation; the process is environmentally-friendly without generating the three wastes (waster water, waste gas and solid waste); and the catalyst can be recycled for a plurality of times, and the preparation method is suitable for industrial production.
Owner:HUNAN CHEM RES INST +1

Algaecide for effectively removing algae and precipitating alga bodies

The invention relates to an algaecide. The algaecide which can be used for effectively removing algae and precipitating alga bodies contains chitosan, fly ash autoclaved brick powder and allelopathic chemicals of gallic acid, nonoic acid or N-phenyl-naphthylamine, and is obtained by dissolving a certain amount of chitosan by using hydrochloric acid, then adding the fly ash autoclaved brick powder of 40-200 meshes, and then adding the dimethyl sulfoxide assisted dissolved allelopathic chemicals of gallic acid, nonoic acid, N-phenyl-1-naphthylamine or N-phenyl-2-naphthylamine. The chitosan and the fly ash autoclaved brick powder used in the algaecide provided by the invention are nontoxic, the allelopathic chemicals of gallic acid, nonoic acid and the like belong to plant secondary metabolism products, can be degraded easily in a water body and cannot cause secondary pollution, and although the diluted HCl solution is used for dissolving chitosan, great changes of the pH value of the water body are not caused in a dosage range. The algaecide provided by the invention can be used for removing the algae effectively and ensuring that the alga bodies are sunk to the bottom of water, has a small influence on the environment and does not cause secondary pollution, the water body is clear, and the beautiful outlook of the water body is not influenced, so that the algaecide is suitable for removing the algae from a small landscape water body taking blue algae as a dominant species.
Owner:永城开控水务有限公司

Method for preparing benzo-phenoselenazine photosensitizer

The invention relates to a method for synthesizing 5-(alkylamide-)-9-(N, N-dialkylamide) benzo-phenoselenazine hydrochloride shown in a formula I by using nanometer copper oxide as a catalyst. A benzo-phenoselenazine derivant, namely the 5-(alkylamide-)-9-(N, N-dialkylamide) benzo-phenoselenazine hydrochloride is an excellent photosensitizer for a photodynamic therapy, has the absorption wavelength above 650 nanometers, good water solubility, larger absorption intensity, high tumor cell selectivity and short metabolic time and is easy for synthesis and structure modification, thereby being an ideal novel photosensitizer. The method comprises the following steps of: with 3-iodo-N,N-dialkylaniline and selenium powder as raw materials, preparing di-(3-N,N-dialkylaniline) diselenide shown in a formula II under the catalysis of copper oxide, carrying out a nitrosation reaction on the bi-(3-N,N-dialkylaniline) diselenide and sodium nitrite to generate a bi-(3-N, N-dialkylamide-6-nitrosobenzene) diselenide, and finally carrying out a cyclization reaction on the bi-(3-N,N-dialkylamide-6-nitrosobenzene) diselenide and N-alkyl-1-naphthylamine to prepare the benzo-phenoselenazine derivant shown in the formula I. The method for synthesizing the benzo-phenoselenazine derivant is mild in reaction conditions, simple to operate and high in yield; and the raw materials are available.
Owner:CENT SOUTH UNIV

General internal combustion engine oil composition

The invention relates to an engine lubricating oil composition, in particular to a lubricating oil composition for heavy-duty diesel engines and high-compression ratio gasoline engines. The lubricating oil composition can meet the SJ / CD general internal combustion engine oil specification requirements specified in GB11122-2006 and GB11121-2006. The lubricating oil composition contains a proper amount of metal detergents, an ashless dispersant, an antioxidant, anticorrosive and antiwear agent, a thiophenol antioxidant- and naphthylamine ashless antioxidant-containing auxiliary antioxidant mixture, a viscosity index improver, a pour point depressant and the balance of base oil. The composition has a simple formula and low cost and is convenient to prepare.
Owner:PETROCHINA CO LTD

Method for improving biodiesel antioxygen property

The invention provides a method for enhancing the anti-oxygen performance of biodiesel, which comprises the following steps: an arylamine antioxidant with the content of 20 to 20000mg / kg is added into the biodiesel. The arylamine antioxidant is selected from at least one of naphthylamine derivative, diphenylamine derivative, ursol derivative and quinoline derivative. According to the method provided by the invention, a phenol antioxidant can also be added into the biodiesel, and the mass ratio between the phenol antioxidant and the arylamine antioxidant is 1:0.05 to 20. The method provided bythe invention can obviously improve the oxidative stability of the biodiesel.
Owner:CHINA PETROLEUM & CHEM CORP +1

Composite amine antioxidant, preparation and use thereof

The invention provides a composite amine antioxidant, which at least comprises the following two substances: (1) alkylated diphenylamine and (2) alkylated N-phenyl-alpha-naphthylamine. The composite amine antioxidant is prepared by addition of diisobutylene into mixture of the diphenylamine and the N-phenyl-alpha-naphthylamine for alkylation reaction in the presence of acid catalyst. The composite amine antioxidant provided by the invention has good oil-soluble performance and antioxidation, and can be widely applied to various lubricating oil.
Owner:CHINA PETROLEUM & CHEM CORP +1

Polystyrene-maleic anhydride derivative water-coal-slurry additive and preparation method thereof

The invention discloses a polystyrene-maleic anhydride derivative water-coal-slurry additive and a preparation method thereof. The preparation method comprises the following steps of: dissolving 60 grams of polystyrene-maleic anhydride into 300ml of organic solvent, stirring in an oil bath at the temperature of 40-60 DEG C at the speed of 250-300 revolutions per minute, and preserving heat for 20-30 minutes; and dissolving 30-90 grams of naphthylamine sulfonic acid into 1,000ml of 1.5-3 percent by mass of aqueous alkali, slowly dropping with a dropping funnel, controlling the dropping speed under the condition that dropping is competed within 15-30 minutes, and reacting in an oil path at the temperature of 40-60 DEG C at the speed of 250-300 revolutions per minute under a stirring condition for 6-18 hours. The polystyrene-maleic anhydride derivative water-coal-slurry additive is an excellent water-coal-slurry additive, has a controllable chemical structure, can contribute to remarkably reducing the coal-water interface tension, and is an efficient water-coal-slurry additive with a large coal range and a small using amount.
Owner:JIANGXI HEGU NANO MATERIAL TECH

Chloroprene rubber composition

The invention relates to a chloroprene rubber composition. The chloroprene rubber composition comprises the following components of chloroprene rubber, butadiene styrene rubber, sulfur, zinc oxide, an anti-aging agent RD, hard china clay, semi-reinforcing furnace black, high-activity carbon black, an accelerant CZ, an accelerant TS, an accelerant TRA, dibutyl sebacate, diaryl para phenylene diamine, gamma-sulfydryl propyl trimethoxy silane, phenyl-beta and a mixture of naphthylamine and diphenyl para phenylene diamine. The butadiene styrene rubber and the chloroprene rubber are used in a combination way, and the coaction of auxiliary agents such as the diaryl para phenylene diamine, the dibutyl sebacate and the like is realized, so that the low-temperature cold resistance of the chloroprene rubber is further improved, the brittleness temperature of the chloroprene rubber can reach -56 DEG C without rubber fracture, and the chloroprene rubber has high oil resistance and other properties without obvious changes. The using value of the chloroprene rubber is improved while the cold resistance of the chloroprene rubber is improved, so that the chloroprene rubber composition has great significance of better exerting effects of a chloroprene rubber material and a chloroprene rubber material product in fields of automobiles, petrochemical industry and the like, the safety control of the product is improved, and the service life of the product is prolonged.
Owner:TIANJIN PENGYI GRP CO LTD

Room temperature phosphorescent material based on phenyl-2-naphthylamine or phenyl-2-naphthylamine and 4,4-dibromodiphenyl composite crystal, and preparation method and application thereof

The invention relates to room temperature phosphorescent material based on phenyl-2-naphthylamine or phenyl-2-naphthylamine and 4,4-dibromodiphenyl composite crystal, preparation method of the material, and application of the material in the organic white light material field, safety anti-counterfeiting identification field and other fields, and belongs to the technical field of organic room temperature phosphorescent materials. 2-Naphthylamine is connected with benzene rings or naphthalene rings having different substitutions, this type of molecules is as good as naphthylamine in emitting deep blue light and can also efficiently emit yellow-green phosphorescent light at low temperature. 4,4-Dibromodiphenyl provides, on one hand, heavy atoms for a body so that interstitial crossing rate of objective molecules from single linear state to triple linear state is increased, and avoids, on the other hand, the quenching of the objective molecules due to accumulation, thereby ensuring efficient luminescent efficiency. A white light luminescent material can be prepared by using fluorescent-phosphorescent double emission of the system, and long-life phosphorescent emission is potentially significant to bio-labeling and anti-counterfeiting identification fields.
Owner:JILIN UNIV

Method for treating wastewater from production of methyl naphthol and reclaiming methyl naphthol and methyl naphthylamine

The invention discloses a harnessing method of naphthol manufacturing waste water and recycling method of naphthol and a-haphthylamine, which comprises the following steps: filtering naphthol manufacturing waste water; removing suspension; making filtrate through adsorption tower with large-hole resin; stopping adsorbing until the adsorption reaches leakage point; adopting carbinol or alcohol water solution as desorption agent to regenerate; obtaining alcoholic solution of naphthol and a-haphthylamine as desorption agent; rectifying the desorbed alcoholic solution; returning remained composition of naphthol and a-haphthylamine in the dehydrating procedure of original manufacturing process. The invention makes naphthol density less than 3mg / L, a-haphthylamine density less than 2mg / L and COD less than 100mg / L, which recycles resource to reduce manufacturing cost obviously.
Owner:NANJING UNIV

Perovskite quantum dots and synthesis method thereof

The invention relates to a synthesis method of perovskite quantum dots. The method includes the following steps: cesium salt and / or organic salt is dissolved in an organic solvent to obtain a first solution. The organic salt is formamidine salt, methylamine salt or naphthylamine salt; metal salt is dissolved in an organic solvent and an alkyl phosphoric acid and a compound of the formula (1) are added to obtain a second solution. The metal salt is a lead salt or a bismuth salt. The formula (1) is as follows: R is alkyl; raising the temperature of the first solution to 120-140oC, then injectingthe first solution into a second solution with the temperature of 120-180oC. The molar ratio of the cesium salt and / or the organic salt in the first solution to the metal salt in the second solutionis not more than 1:2 to obtain the perovskite quantum dot. According to the invention the perovskite quantum dots prepared by the above preparation method are also provided. The perovskite quantum dots are spherical. The perovskite quantum dots comprise perovskite of the inner layer and the perovskite surface is connected with alkyl phosphoric acid through a non-covalent bond.
Owner:SUZHOU UNIV
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