56 results about "Nitrosobenzene" patented technology

Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of vinyl aromatic monomers wherein the method comprises adding to said monomers an effective amount of an inhibitor and retarder blend comprising: (A) at least one aromatic sulfonic acid; (B) at least one amine; (C) at least one nitrophenol; and (D) at least one member of the group consisting of nitroxy radical-containing compounds and nitrosoanilines.

The invention discloses a fluorescent dye having phenazine condensed structure, of which the structural formula is represented as one of the formulas (I) to (IV). The fluorescent dye having phenazinecondensed structure is prepared through steps of: reactions of cyclohexanedione condensation, sodium borohydride reduction, Vilsmeier formylation and the like are carried out to obtain an intermediatecompound; and then reactions with 4-subsituent amino-2-nitrosophenol, benzophenone acid, trans-4-subsituent amino-salicylaldehyde and the like compounds are carried out. Compared with classical fluorescent dyes (e.g. rhodamine, oxazine, squaric acid, anthocyanin dyes), the fluorescent dye in the invention has high photo-stability, is near-infrared in fluorescence emission wavelength of 635-829 nm, and has large Stokes shift capable of reaching 122 nm and high fluorescence quantum yield capable of reaching 0.43. The fluorescent dye can be applied to fields such as luminescent materials, bio-fluorescence probes, multicolor fluorescence imaging, etc.

The invention relates to a method for catalyzing and synthesizing an asymmetric azoxybenzene compound. The method includes the steps that in organic solvent and in the atmosphere of oxygen, a compound catalyzing system composed of CuC1 and aids is used for a catalytic-dehydrogenation condensation reaction. With aromatic amine and nitrosobenzene being raw materials, under conditions of mildness and oxygen, the asymmetric azoxybenzene compound which is widely applied is realized through efficient and selective synthesis. Common CuC1 easy to obtain is used as a catalyst, the raw materials used for synthesis are also easy to obtain, and conditions needed for the reaction are simple, mild and easy to operate. Compared with the prior art, the method has higher actual application value, is environmentally friendly, and can be sustainably applied and popularized.

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.

The invention belongs to the technical field of beneficiation, and in particular, relates to a niobium titanium uranium ore capturing agent and a flotation process thereof. An used reagent N-nitrosobenzene hydroxylamine ammonium (commonly known as a copper iron reagent) is analyzed to serve as the niobium titanium uranium ore capturing agent for positive flotation of a niobium titanium uranium ore to obtain excellent flotation technical indexes. The copper iron reagent is used as the capturing agent; kerosene is used as an auxiliary capturing agent; when the flotation raw ore uranium grade is 0.077%, once roughing, once selection and once scavenging closed-loop flow are adopted to obtain an uranium concentrate with a yield of 9.23%, an uranium content of 0.766% and a yield of 91.75%; and the flotation tailing uranium grade can be reduced to 0.007%. The uranium grade can be enriched by 10 times through flotation; the obtained flotation concentrate quantity is about 10% of that before flotation; and the hydrometallurgy is performed for the flotation concentrate. The hydrometallurgy capacity can be largely reduced after beneficiation; such costs as hydrometallurgy medicament, water and electricity are saved; and the flotation tailing can be directly discarded.

The invention discloses an aluminum conductor power cable material with an excellent mechanical property. The aluminum conductor power cable material is prepared from raw materials in parts by weight as follows: 30-40 parts of low-phenyl silicone rubber, 15-25 parts of nitrile rubber, 20-35 parts of metallocene polyethylene, 1.5-2.5 parts of tetramethyl thiuram disulfide, 1-2 parts of antimony dioxide, 0.5-0.6 parts of potassium ammonium dichromate, 0.3-0.8 parts of poly-p-nitrosobenzene, 1-2 parts of coumarone resin, 1.2-1.8 parts of coal pitch, 0.6-1.2 parts of chlorinated paraffin, 1-2 parts of tall oil, 1-2 parts of bis-dodecanol ester, 1-3 parts of pine tar oil, 10-20 parts of modified wheat protein, 5-15 parts of attapulgite, 50-75 parts of fumed silica, 8-16 parts of calcined clay, 0.5-1.5 parts of an ultraviolet absorber UV-531, 0.5-1.5 parts of an antioxidant 264 and 1-2 parts of zinc stearate. The aluminum conductor power cable material has good thermal stability and excellent extension resistance.

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of:A) at least one first inhibitor selected from the group consisting of C-nitrosoaniline compounds; andB) at least one second inhibitor selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds. Also disclosed is a composition of matter comprising:A) at least one member selected from the group consisting of C-nitrosoaniline compounds; andB) at least one member selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds.

The invention discloses a heat vulcanized adhesive for adhering a vulcanized rubber or a thermoplastic rubber with a hard panel. The heat vulcanized adhesive comprises a crosslinking agent N,N'-dinitroso-p-phenylene dihydroxy disodium, halogenated rubber, metal oxide such as zinc oxide or magnesium oxide, inertia stuffing such as carbon black or titanium dioxide, a solvent such as aromatic hydrocarbon, chloride solvent or ketone solvent, a polybismaleimide compound such as N,N'-m-phenylene bismaleimide or diphenylmethane bismaleimide, and a vulcanizing agent such as sulphur, selenium or tellurium. The heat vulcanized adhesive has the characteristics that the heat vulcanized adhesive does not comprise aromatic polynitroso compound, adduct of perhalogenated cyclic conjugated diene / olefinic unsaturated dienophile, and copolymer formed by halogenated butadiene monomer / alpha-halogen substituted monomeric compound, and also does not comprise any one of alkoxy silane / polymer of nitrosobenzene or nitrosobenzene precursor combination; meanwhile, the heat vulcanized adhesive has pre-heating-resistance or is suitable for the requirement of injection molding process, and has the slat mist resistance and boiled water resistance.

The invention discloses flame retarding aging resistant plastic for a mobile phone shell. The flame retarding aging resistant plastic is prepared from, by weight, 10-30 parts of styrene-butadiene-styrene copolymer, 15-30 parts of organic silicon resin, 5-18 parts of polypropylene, 5-15 parts of polyurethane, 5-15 parts of acrylnitrile-butadiene-styrene copolymer, 2-8 parts of boron nitride, 4-8 parts of Fe-OMT, 1-5 parts of aluminum oxide, 1-2 parts of titanate TTS, 2-8 parts of silicon carbide, 5-15 parts of calcined clay, 5-15 parts of clay, 8-16 parts of modified opal powder, 1-3 parts of polypropylene grafted maleic anhydride, 0.5-1.5 parts of polycaprolactone, 0.5-2 parts of natural rubber grafted poly methyl methacrylate, 0.5-1.5 parts of dithiodimorpholine, 1-2 parts of tert-butyl hydroperoxide, 1-2 parts of methylenebis(2-chloroaniline), 1-2 parts of poly-nitrosobenzene, 0.5-1.5 parts of 1,2-dihydro-2,2,4-trimethylquinoline homopolymer, 0.5-1.5 parts of 1-hexadecanol and 0.5-1.5 parts of distearyl thiodipropionate. The flame retarding aging resistant plastic is resistant to abrasion and aging and superior in flame retarding performance.

The invention discloses a polyvinyl chloride cable material not prone to deformation. The polyvinyl chloride cable material is prepared from, by weight, 20-30 parts of polyvinyl chloride resin, 15-25 parts of an acrylonitrile-butadiene-styrene copolymer, 30-50 parts of polypropylene, 2-6 parts of polyurethane, 1-2 parts of polypropylene grafted maleic anhydride, 1-2 parts of vinyl-(beta-methoxy-ethoxy)silane, 10-20 parts of modified carbon nano tubes, 1-3 parts of graphene, 1-5 parts of aluminium oxide, 1-5 parts of silicon carbide, 2-8 parts of calcium carbonate, 3-7 parts of talcum powder, 1-2 parts of castor oil, 1-2 parts of 4,4'-dithiomorpholine, 2-5 parts of tert-butyl hydroperoxide, 0.5-1.2 parts of methylenebis(2-chloroaniline), 0.5-1.2 parts of poly-p-nitrosobenzene, 1-3 parts of an antioxidant 1010, 1-2 parts of chlorinated paraffin and 1-2 parts of thiodipropionic acid diester.

Disclosed herein is a method for inhibiting the premature polymerization and the polymer growth of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of a combination of (A) at least one inhibitor that is a sulfonated phenol of the formula: wherein (1) R2 is selected from the group consisting of hydrogen and hydrocarbyl; and (2) R1 and R3 are independently selected from the group consisting of hydrogen and SO3H, provided that at least one of R1 and R3 is SO3H; (B) at least one inhibitor that is a nitrophenol; and, optionally, (C) an inhibitor selected from the group consisting of nitroxyl compounds and nitrosoanilines; and (D) an amine.

The invention discloses a tearing-resistant and impact-resistant power cable, comprising a conductor and a jacket layer coated at the outer side of the conductor, wherein the jacket layer comprises the following raw materials in parts by weight: 20-40 parts of low-phenyl silicone rubber, 45-85 parts of acrylonitrile-butadiene rubber, 10-20 parts of chlorosulfonated polyethylene, 0.3-0.7 part of antimony dioxide, 1.5-2.5 parts of 2,4-dichlorobenzoyl peroxide, 1.5-2.5 parts of poly-p-nitrosobenzene, 0.3-0.5 part of potassium ammonium dichromate, 1.5-2.5 parts of phenolic resin, 2-4 parts of C5 petroleum resin, 10-16 parts of superfine talc powder, 10-18 parts of lignin, 45-65 parts of sepiolite powder, 4-10 parts of halloysite, 10-20 parts of modified betaine, 2-4 parts of an antioxidant 1076, 0.4-0.8 part of dilauryl thiodipropionate, 2-4 parts of epoxidized soybean oil, and 0.5-1 part of zinc stearate.

The invention discloses a synthesis method of a compound 2,6 -di-tert-butyl-4-nitrosophenol, and belongs to the technical field of chemical synthesis. According to the method, ethanol is used as a reaction solvent, 2,6-di-tert-butyl phenol, concentrated sulfuric acid and sodium nitrite are used as raw materials to be subjected to a nitrosation reaction in a normal temperature and atmospheric condition under the protection of nitrogen; and a reaction solution is post-treated to obtain the compound 2,6 -di-tert-butyl-4-nitrosophenol. The raw materials adopted by the invention are low in cost and easy to obtain, and any catalyst is not used in the synthesis process, thereby avoiding the use in a noble metal catalyst in the traditional synthesis method, reducing the cost and being favorable for the environment; the process steps are simple, the reaction conditions are mild, the reaction time is short, the post-treatment is simple, the operation is simple and safe, and the purposes of fastness and efficiency are achieved; the yield of the final product is high (up to 99%), and the purity is high (more than or equal to 99.0%); and in the whole synthesis process, no waste gas, waste liquor and waste residue are generated, and reaction materials are recycled.

A bonding composition comprising at least an encapsulated aromatic nitroso compound, or an aromatic nitroso compound precursor and an encapsulated oxidant, or an encapsulated aromatic nitroso compound precursor and optionally encapsulated oxidant is provided. The compositions may find utility in polymer to metal, in particular, rubber to metal bonding. The aromatic nitroso compound or aromatic nitroso compound precursor may be nitrosobenzene / dinitrosobenzene or nitrosobenzene / dinitrosobenzene precursor respectively. The nitrosobenzene or dinitrosobenzene precursor may be a quinone oxime or a quinone dioxime.

The invention discloses a waterproof cable with a compact structure and a small gap. The cable comprises a conductor and a jacket layer covering the outer side of the conductor, wherein the jacket layer is prepared from the following raw materials in parts by weight: 26 to 32 parts of nitrile rubber, 20 to 35 parts of silicone rubber, 10 to 20 parts of chlorinated polyethylene, 1.5 to 2.5 parts of dicumyl peroxide, 1 to 2 aprts of N,N'-m-phenylenedimaleimide, 0.3 to 0.4 part of potassium ammonium dichromate, 0.4 to 0.8 part of poly-p-nitrosobenzene, 0.4 to 1.2 parts of dioctyl phthalate, 2 to 4 parts of bis(2-ethylhexyl) phthalate, 2 to 4 parts of chlorinated paraffin, 45 to 65 parts of white carbon black, 4 to 10 parts of diatomite, 8 to 12 parts of sepiolite, 10 to 18 parts of modified corn fibers, 1.5 to 2.5 parts of 2-ethylhexyl 9,10-epoxyoctadecanoate, 1.5 to 2.5 parts of epoxidized methyl linoleate, 1.5 to 2.5 parts of tributyl citrate, 8 to 16 parts of wheat protein, 1.5 to 3.5 parts of zinc stearate, 1 to 2 parts of antioxidant 264, and 2 to 3 parts of ultraviolet absorbent UV-531.

Methods for bonding polymeric substrates to hydroxylated surfaces such as glass are disclosed. The polymeric substrates may be elastomeric substrates such as a natural or synthetic rubber. The method may comprise applying a compound comprising at least one alkoxy silane moiety and at least one moiety selected from a nitrosoaromatic or a nitrosoaromatic precursor to one of the substrates. The nitrosoaromatic moiety may be a nitrosobenzene. The nitrosoaromatic precursor may be a nitrosobenzene precursor, such as at least one of a quinone dioxime or a quinone oxime. Novel primers and compounds suitable for use in the bonding process are also disclosed.

The invention relates to heat-curing preparations, containing (a) a triglyceride fraction, the fatty acid distribution of which has a portion of at least 5 wt%, in particular of at least 60 wt%, of one or more omega-3 fatty acids and / or one or more omega-6 fatty acids, (b) at least one vulcanizing agent selected from the group comprising (b1) sulfur, (b2) peroxidic vulcanizing agents, (b3) quinones and / or quinone dioximes, and / or (b4) dinitrosobenzenes, and (c) at least one inorganic filler.

The invention relates to a synthesis method of 1-propyl-[4-(4 '-butylphenylazo)] azobenzene. The synthesis method comprises the following steps: carrying out a reaction on potassium hydrogen persulfate and 4-nitroaniline to obtain 4-nitro-nitrosobenzene, carrying out a reaction on the 4-nitro-nitrosobenzene, 4-n-butylaniline and acetic acid, and carrying out post-treatment to obtain 4-n-butyl-4'-nitro azobenzene; the preparation method comprises the following steps: dissolving 4-n-butyl-4 '-nitroazobenzene in DMF (Dimethyl Formamide), and reducing by hydrazine hydrate to obtain 4-n-butyl-4'-aminoazobenzene; the preparation method comprises the following steps: stirring 4-n-butyl-4 '-aminoazobenzene, concentrated hydrochloric acid and water, dropwise adding a sodium nitrite solution, dropwise adding a propylaniline glacial acetic acid solution, reacting, and performing post-treatment to obtain the 1-propyl-[4-(4'-butylphenylazo)] azobenzene. The synthesis method of the 1-propyl-[4-(4 '-butylphenylazo)] azobenzene is reasonable in process design, low in raw material cost, easy in purification treatment, high in yield and suitable for small-batch production.

The invention discloses a cable with excellent mechanical properties. The cable comprises a conductor and a sheath layer covering the outer side of the conductor, wherein the sheath layer is prepared from the following raw materials in parts by weight: 15-28 parts of an ethylene-vinyl acetate copolymer, 22-28 parts of nitrile rubber, 5-15 parts of neoprene, 0.2-0.9 part of dioctyl adipate, 1-2 parts of dicyclohexyl phthalate, 1-2 parts of chlorinated paraffin, 0.5-1.2 parts of N,N'-m-phenylene bismaleimide, 1-2 parts of sulphur, 0.15-0.25 part of phenol-formaldehyde resin, 0.1-0.6 part of poly-p-nitrosobenzene, 5-10 parts of modified mulberry leaf powder, 40-60 parts of bentonite, 5-10 parts of active kaolin, 2-6 parts of kieselguhr, 5-12 parts of peanut protein, 1-2 parts of paraffin oil, 1-2 parts of epoxidized soybean oil, 1-2 parts of disproportionated rosin, 0.5-1.5 parts of an antioxidant 264, 0.5-1.5 parts of an anti-aging agent RD and 1-3 parts of zinc stearate.

The invention discloses a flotation method for zinc oxide in sulphide ore tailings. Sodium hexametaphosphate and sodium silicate which have a remarkable inhibiting effect on gangue minerals such as quartz, calcium magnesium carbonate and magnesium silicate and slime in sulfide ore tailings are used as a combined inhibitor, and meanwhile a combined collecting agent formed by mixing CA-1, N-nitroso-benzene nuclear ammonium salt and E-5 according to the proportion of 1: (0.5-0.8): (0.2-0.5) is used. The combined collecting agent is adopted, a one-roughing, two-concentrating and one-sweeping closed-loop non-desliming direct flotation process flow is adopted, the dosage ratio of the inhibitor to the regulator in the flotation process is reasonably optimized, the flotation reagent consumption can be effectively reduced, the separation index is improved, and the recovery rate and the grade of the zinc oxide concentrate in the sulphide ore tailings are remarkably improved, so that the zinc oxide concentrate of which the zinc grade is 46.7% and the zinc recovery rate is as high as 92.4% is obtained, and efficient utilization of low-grade refractory zinc oxide ore resources in the sulphide ore tailings is realized.

The invention provides a novel method for synthesizing polysubstituted 3-aminopyrrole compounds under relatively-mild reaction conditions by utilizing high ynamine and nitrosobenzene as raw materials.The method provided by the invention uses the nitroso aromatic hydrocarbon as an amination reagent, the raw materials used in the method are simple to prepare, cheap and easy to obtain, and the method is simple to operate, and has a high yield and great industrial application value.

The invention discloses an environment-friendly waterproof power cable. The environment-friendly waterproof power cable comprises a conductor and a sheath layer which coats the outer side of the conductor; the sheath layer comprises the following raw materials in parts by weight: 40 to 80 parts of polyisobutene, 15 to 35 parts of low-phenyl silicone rubber, 5 to 15 parts of metallocene polyethylene, 40 to 60 parts of white carbon black, 5 to 10 parts of calcined clay, 2 to 8 parts of organic montmorillonite, 5 to 12 parts of pyrolysis soot, 1 to 3 parts of C5 petroleum resin, 1 to 2 parts of liquid coumarone resin, 5 to 15 parts of modified glycine betaine, 1 to 2 parts of disproportionated rosin, 0.2 to 0.6 part of tri(nonylphenyl)phosphate, 1 to 2 parts of ascorbic acid, 0.1 to 0.6 part of zinc stearate, 1 to 2 parts of a vulcanizing agent DCP, 0.1 to 0.5 part of stearic acid, 0.1 to 0.3 part of potassium ammonium dichromate, and 1 to 2 parts of poly-p-nitrosobenzene.

The invention discloses LED (light-emitting diode) light-curable ink, which is prepared from the following components in parts by mass: 50-70 parts of a prepolymer, 1-10 parts of a monomer, 1-3 parts of an auxiliary agent, 5-10 parts of a photoinitiator and 16-24 parts of pigment. The 50-70 parts of the prepolymer is prepared from 45-55 parts of rosin polyester and 5-15 parts of six-functional-group polyurethane acrylic acid. The 1-10 parts of the monomer comprises 1-10 parts of bis (trimethylolpropane) acrylate. The 1-3 parts of the auxiliary agent comprises 0.5-1 part of a fatty acid modifier, 0.1-0.5 parts of N-nitroso-N-phenylhydroxylamine aluminum, 0.3-0.5 parts of nano calcium carbonate and 0.1-1 part of organic silicone oil. The 5-10 parts of the photoinitiator is prepared from 1.5-3 parts of 369, 1.5-3 parts of DETX and 2-4 parts of tetraethyl Michler's ketone. According to the LED light-curable ink, tetraethyl Michler's ketone is introduced into the composite photoinitiator, so that the light curing efficiency of a light curing system in the LED light-curable ink in a 395-nanometer wave band is greatly improved; and due to the fact that the light curing efficiency is improved under an LED light source, the drying speed of the surface of the ink is also effectively improved.

The invention discloses an alpha-alkoxy-alpha-nitroxyacetate derivative, and a synthesis method and an application thereof. A diazonium compound, benzyl alcohol and nitrosobenzene which are used as raw materials undergo a one-step reaction at room temperature with allylpalladium chloride as a catalyst, an organic solvent as a solvent and 4A molecular sieve as an additive to obtain the alpha-alkoxy-alpha-nitroxyacetate derivative. The synthesis method of the alpha-alkoxy-alpha-nitroxyacetate derivative has the advantages of high atomic economy, high selectivity, low dosage of the catalyst, andsimplicity and safety in operation, and the alpha-alkoxy-alpha-nitroxyacetate derivative synthesized in the invention is an important organic synthesis intermediate. The alpha-alkoxy-alpha-nitroxyacetate derivative prepared in the invention can be used as an important intermediate for medicines and chemical industry, and has wide application prospects in the field of medicines.

The invention discloses a high-ultraviolet-resistance rubber material which is prepared from the following raw materials in parts by weight: 30-55 parts of ethylene-propylene rubber, 20-40 parts of acrylate rubber, 2-10 parts of chlorosulfonated polyethylene, 2-8 parts of styrene-butadiene rubber, 1-2 parts of tert-butyl peroxide, 1-4 parts of phthalic anhydride, 20-40 parts of titanium dioxide-corn stalk fiber composite, 5-15 parts of cork flour, 45-65 parts of attapulgite, 5-12 parts of allophane, 2-6 parts of sodium illite, 1-6 parts of aluminium borate whisker, 2-4 parts of sodium antimonate, 0.5-2 parts of trimethyl phosphate, 0.2-0.8 part of epoxy fatty acid methyl ester, 0.1-0.6 part of plasticizer DBP, 0.5-1.2 parts of diethylene glycol benzoate, 1-2 parts of zinc stearate, 1-2 parts of poly-p-nitrosobenzene, 0.5-1.5 parts of antioxidant 1010, 0.5-1.5 parts of antioxidant DLTP and 1-2 parts of ultraviolet absorbent UV-531.

Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor that is a sulfonated nitrophenol of the formula: wherein: R1, R2, and R3 are independently selected from the group consisting of hydrogen, alkyl, NO2, and SO3H, provided that at least one of R1, R2, and R3 is NO2 and at least one of R1, R2, and R3 is SO3H. In a preferred embodiment, at least one additional inhibitor selected from the group consisting of nitroxyl compounds, nitrosoanilines, nitrophenols, amines, and mixtures thereof is also added.

The preparation method comprises the following steps: adding phenol into an aqueous solution of sodium nitrite and sodium hydroxide to prepare a mixed solution of sodium phenolate and sodium nitrite, dropwise adding the mixed solution into a sulfuric acid solution at a preset temperature, and carrying out stirring reaction, filtering and washing to prepare an intermediate p-nitrosophenol wet material; dropwise adding a hydroxylamine hydrochloride aqueous solution into the intermediate p-nitrosophenol wet material, stirring for reaction, filtering and washing to obtain a p-benzoquinone dioxime wet material; the preparation method comprises the following steps: dissolving a p-benzoquinone dioxime wet material in an aqueous solution of sodium hydroxide to obtain an alkaline p-benzoquinone dioxime solution, dropwise adding a dilute NaClO solution into the alkaline p-benzoquinone dioxime solution, stirring, reacting, filtering and washing to obtain a p-dinitrobenzene product. According to the method, the raw material cost is low, only water is involved as a reaction solvent in the whole process, the operation process is simple, a wet material intermediate does not need to be dried in the process, and the finally prepared p-dinitrosobenzene has excellent adhesive performance.