277 results about "Alkylphenol" patented technology

The invention discloses a pseudomonas synthetic flora and application thereof in prevention and treatment of apple continuous cropping obstacles, and belongs to the technical field of agricultural microorganisms. The synthetic flora is constructed from three strains of pseudomonas, i.e., alkylphenol pseudomonas, oleaginous pseudomonas and pseudomonas putida, and the biological preservation numbers of the three strains of pseudomonas are respectively as follows: alkylphenol pseudomonas S4, CGMCC (China General Microbiological Culture Collection Center) No.36078; the culture medium is characterized in that the culture medium is Pseudomonas oleovorans S38, and the culture medium is CGMCC (China General Microbiological Culture Collection Center) No.36079; pseudomonas putida S42, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No.36080, is CGMCC No.36080. The synthetic flora has a relatively strong antagonistic effect on main pathogenic bacteria (fusarium oxysporum and fusarium solani) of apple continuous cropping obstacles, and the inhibition capability of the synthetic flora is remarkably superior to that of a single strain; field and pot experiment results show that the liquid bacterial fertilizer and the solid bacterial fertilizer of the synthetic flora can promote the growth of overground parts and underground parts of the continuous cropping apple trees; the number of harmful fungi in continuous cropping soil is obviously reduced; the root protecting enzyme activity is improved, and the MDA content is reduced; the rhizosphere micro-ecology of the continuous cropping apples is optimized, and the continuous cropping obstacles of the apples are remarkably relieved.

The invention discloses a carbon fiber reinforced modified resin material and a preparation method thereof, and belongs to the technical field of high-molecular compound composition.The preparation method comprises the steps that 40-60 parts of acidified carbon fibers, 8-12 parts of silane coupling agent modified graphene oxide, 10-20 parts of polyethylene glycol and 3-8 parts of alkylphenol polyoxyethylene ether are ultrasonically mixed to be uniform with acetone as a solvent, and a mixture I is obtained; mixing 100 parts of epoxy resin and 30-50 parts of a curing agent, heating and stirring until the mixture is melted to obtain a mixture II; the mixture I and the mixture II are placed in a vacuum drying oven to be mixed and stirred, the obtained product is placed at the room temperature and then subjected to heating curing treatment, and the carbon fiber reinforced modified resin material is obtained, so that the interface bonding strength of the composite material is remarkably improved by optimizing the formula, and the composite material has excellent mechanical properties; the composite material has a wide application prospect in the fields of aerospace, automobile manufacturing, electronics and other high-performance composite material requirements.

The invention provides an amphiphilic carbon dot, a carbon nanofluid and application of the amphiphilic carbon dot and the carbon nanofluid, and belongs to the technical field of nanomaterial oil displacement, and the amphiphilic carbon dot is prepared by taking alkylphenol polyoxyethylene ether and glucose as raw materials to perform solvothermal reaction; the alkylphenol polyoxyethylene ether comprises octylphenol polyoxyethylene ether and / or nonylphenol polyoxyethylene ether; the mass ratio of the alkylphenol polyoxyethylene ether to the glucose is 1: (0.1-2). According to the invention, alkylphenol polyoxyethylene ether and glucose are taken as raw materials, and simple preparation of the amphiphilic carbon dots with high surface and interface activity is realized. The amphiphilic carbon dots provided by the invention show good surface and interface activity at high temperature and high salinity. According to the carbon nanofluid provided by the invention, the amphiphilic carbon dots and the zwitterionic surfactant are compounded, so that the stability of a carbon nanofluid oil displacement system at high temperature and high salt can be further improved, the crude oil recovery rate is increased, and efficient yield-increasing development of high-temperature and high-salt deep oil reservoirs is realized.

A rubber coating for a radiofrequency identification device for a tyre characterized in that it comprises: (a) 100 phr of at least one diene-based elastomer; (b) at least one chemical according to formula (1) wherein the chemical comprises in its structure at least the structure of the 2,2′-methylenediphenol, and wherein the 2,2′-methylenediphenol may be substituted in ortho, para, meta position or any combination thereof with an aliphatic, linear or branched, hydrocarbon chain comprising from 1 to 10 C atoms, or may be polymerized in ortho, para, meta position or any combination thereof with one or more additional alkylphenol units. A radiofrequency identification (RFID) module for a tyre comprising a radiofrequency identification device surrounded by a rubber coating, a tyre or a tyre retread comprising such radiofrequency identification module, and use of a rubber coating for surrounding a radiofrequency identification device.

This anticorrosive coating composition comprises a main agent (I) and a curing agent (II), wherein: the main agent (I) contains an epoxy resin (a); the epoxy resin (a) contains at least one of a bisphenol A epoxy resin (a-11) and a novolac epoxy resin (a-12) each having a weight average molecular weight of 6,000-12,000; the curing agent (II) contains a polyamine (b) and an alkylphenol (c); the polyamine (b) contains an alicyclic polyamine (b-1) having a cyclic aliphatic hydrocarbon group to which an amino group is bonded and contains a non-alicyclic polyamine (b-2) having no cyclic aliphatic hydrocarbon group to which an amino group is bonded; at least one of the main agent (I) and the curing agent (II) includes a vinyl-based defoaming agent (d) that has a constituent unit derived from at least one monomer selected from the group consisting of alkyl (meth)acrylates, alkyl vinyl ethers, and olefins and that has a number average molecular weight of 30,000-100,000 or 300,000-2,000,000; the content of the alicyclic polyamine (b-1) is 30%-80% by mass of the solid content of the curing agent (II); the content of the non-alicyclic polyamine (b-2) is 2%-45% by mass of the solid content of the curing agent (II); the content of the alkylphenol (c) is 5%-60% by mass of the solid content of the curing agent (II); and the content of the vinyl-based defoaming agent (d) is 0.005-3 parts by mass with respect to 100 parts by mass of the anticorrosive coating composition.

The invention relates to a gemini surfactant for thickened oil recovery and a preparation method thereof, and belongs to the technical field of thickened oil recovery. The preparation method of the gemini surfactant for thickened oil recovery comprises the following steps: dissolving ethylene glycol dihydric alcohol and paratoluensulfonyl chloride in a tetrahydrofuran solvent, and carrying out substitution reaction under an alkaline condition to obtain an intermediate I; adding nonyl phenol and the intermediate I into a mixed solvent of tetrahydrofuran and N, N-dimethylformamide, and carrying out etherification reaction under an alkaline condition to obtain a gemini precursor II; and mixing an alkylphenol polyoxyethylene ether surfactant, the gemini precursor II and a formaldehyde aqueous solution, and carrying out a phenolic aldehyde condensation polymerization reaction under an acidic condition to obtain the gemini surfactant. The gemini surfactant prepared by the preparation method has good temperature resistance and salt tolerance, the preparation method is simple, the synthesis cost is low, and the gemini surfactant has good economical efficiency and is beneficial to realizing large-scale industrial production.

The invention discloses a low-rank coal composite flotation reagent and a preparation method and application thereof, and belongs to the technical field of coal flotation of mineral processing. The agent specifically comprises a composite collecting agent and a composite foaming agent, and the composite collecting agent comprises kerosene, n-dodecane, oleic acid, dimer acid, sodium stearate, terpilenol, diethyl phthalate, alkylphenol ethoxylates, span-80, trioctyl phosphate and 2-ethylhexanol. The composite foaming agent is prepared from the following components: terpilenol, terpenic oil, sec-octyl alcohol and sodium alpha-olefin sulfonate. Compared with a traditional single flotation reagent combination, the composite flotation reagent has a remarkable effect in fine coal flotation, and particularly when coal with the particle size smaller than 0.5 mm is treated, the flotation efficiency, the clean coal yield and the combustible body recovery rate can be effectively improved. More importantly, the medicament is stable at normal temperature, the layering phenomenon is avoided, the long-term effectiveness is ensured, and the medicament has extremely high industrial application potential.

To provide a liquid spray head that has a low environmental impact, is acid-resistant, and is highly reliable. [Solution] A liquid spray head that sprays liquid from a nozzle comprises a first member, a second member, and a cured product of a one-component adhesive that adheres the first member and the second member, wherein the one-component adhesive comprises a bisphenol-free epoxy resin, a curing agent containing an aromatic amine polymer, and an alkylphenol, wherein the alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The invention provides a retarding type polycarboxylate superplasticizer as well as a preparation method and application thereof, and belongs to the technical field of building material concrete admixtures. The retarding type polycarboxylic acid water reducing agent is prepared from the following raw materials in parts by weight: 300 to 400 parts of polyether macromonomer, 60 to 150 parts of unsaturated carboxylic acid micromonomer, 30 to 60 parts of unsaturated sulfonic acid monomer, 15 to 30 parts of alkylphenol polyoxyethylene ether phosphate, 1.5 to 12 parts of chain transfer agent, 2 to 15 parts of initiator, 15 to 50 parts of caustic soda liquid and 200 to 600 parts of solvent. The polycarboxylic acid water reducing agent product with the retarding characteristic is synthesized through an RAFT method, the binding force between phosphate radicals and calcium ions in a cement pore liquid of the preparation raw material alkylphenol polyoxyethylene ether phosphate is high, hydration of C3A and formation of ettringite are delayed, the retarding effect of the water reducing agent is enhanced, and the polycarboxylic acid water reducing agent has the anion characteristic and the nonionic characteristic and can be used as a water reducing agent. And the workability of the concrete is improved.

The invention belongs to the field of coal mine dust falling, and particularly relates to a composite coal dust suppressant spraying system and application thereof. The composite coal dust suppressant spraying system comprises a spraying unit and a dust suppressant solution, the spraying unit comprises a water storage tank, a high-pressure water pump and a wide-angle solid nozzle, the dust suppressant solution at least comprises alkylphenol polyoxyethylene ether and xanthan gum, and the dust suppressant solution is provided with a three-dimensional network structure used for filling coal dust particle gaps. By changing a spraying medium and adding materials into water, the characteristics of wetting, bonding, agglomeration and the like are improved, the composite dust suppressant with an energy-shaped three-dimensional network structure is developed, and a composite dust suppressant spraying system with the wettability, the water retention and the wind erosion resistance cooperatively improved is provided, so that the spraying and dust falling efficiency of a coal mine is improved, and the dust suppression effect is improved. And the problem of reentrainment of dust is solved.

The invention discloses high-wear-resistance tread rubber for an off-the-road tire, and relates to the technical field of tires. According to the technical scheme, the rubber composition comprises the following components in parts by weight: 100 parts of a rubber component, 35-55 parts of carbon black, 4-6 parts of a wear-resistant agent DC-Z-B, 10-20 parts of white carbon black, 1-2 parts of a silane coupling agent, 1-2 parts of alkylphenol tackifying resin, 8-12 parts of a CR multifunctional composite reinforcing agent TDS, 3-5 parts of an anti-aging agent, 1-2 parts of microcrystalline wax, 3-5 parts of zinc oxide, 1-2 parts of stearic acid, 1.5-2 parts of sulfur and 1.2-2.4 parts of an accelerant. The wear-resistant agent DC-Z-B and CR multifunctional composite reinforcing agent TDS are adopted, through interface optimization, dynamic performance complementation and thermal stability synergy, the wear resistance and tear resistance of the tread rubber can be further improved, and the comprehensive performance improvement of '1 + 1gt, 2' is achieved.

The present invention discloses a lubricating oil additive for a flexible fuel engine, which comprises the following raw materials: overbased calcium alkyl salicylate, overbased sulfurized calcium alkylphenate, 4-pyridine ethylpropylene polymer, alkyl diphenylamine, 2,6-di-tert-butyl a-dimethylamino-p-cresol, and nano boron nitride BNNS. The present invention also discloses a lubricating oil composition for a flexible fuel engine, which comprises the above-mentioned lubricating oil additive for a flexible fuel engine, and further comprises an emulsifier and a base oil. The present invention can solve the key problem that a large amount of water is generated during the work combustion process of a flexible fuel engine, resulting in hydrolysis of dispersants, friction reducers and anti-wear agents in engine oil, damage to the molecular structure and loss of lubricating function. At the same time, it also solves the technical problem of difficult low-temperature cold start of a flexible fuel engine caused by water.

The invention provides a high-flexibility tear-resistant epoxy structural adhesive as well as a preparation method and application thereof. The epoxy structural adhesive is prepared by mixing a component A and a component B, on the basis of the total weight of the component A, the component A comprises the following components in percentage by weight: 34-70% of modified epoxy resin, 5-30% of bisphenol A type epoxy resin, 2-6% of benzyl alcohol, 8-15% of an epoxy reactive diluent, 0.2-1.5% of a defoaming agent, 1-5% of a thixotropic agent, 5-40% of filler and 1-4% of epoxy color paste; on the basis of the total weight of the component B, the component B comprises the following components in percentage by weight: 55-75% of polyether amine, 5-15% of bisphenol A epoxy resin, 5-10% of benzyl alcohol and 10-20% of dodecylphenol. The mixing mass ratio of the component A to the component B is (3.7-7): 1. The modified epoxy resin and the bisphenol A epoxy resin are compounded, and an optimized curing system is combined, so that the flexibility and the tear resistance of the structural adhesive are remarkably improved while the high strength of the epoxy resin is maintained, and the structural adhesive is suitable for structural bonding in the fields of buildings, automobiles, electronics and the like.

To provide a liquid spray head having a cured adhesive product that has a low environmental impact, is fast-curing, and acid-resistant. [Solution] The liquid spray head is a liquid spray head that sprays liquid from a nozzle and comprises a first member, a second member, and a cured product of a two-component mixed adhesive that adheres the first member and the second member. The two-component mixed adhesive comprises liquid A, which contains a main component including an epoxy resin that does not contain bisphenol; liquid B, which contains at least one of 2,5-bis(aminomethyl)bicyclo[2.2.1]heptane and 2,6-bis(aminomethyl)bicyclo[2.2.1]heptane and an alkylphenol; and a polymer of an aromatic amine contained in liquid A or liquid B. The alkylphenol is (a) an alkylphenol having at least one ethyl group, or (b) an alkylphenol having 1 to 3 carbon atoms in the alkyl group and at least one methyl group and one isopropyl group.

The invention belongs to the technical field of organic separation, and particularly relates to a method for separating phenol monomers from mixed phenol. The method for separating the phenol monomer from the mixed phenol comprises the following steps: mixing and heating the mixed phenol, an acid catalyst, first phenol and zirconium phosphate for reaction to obtain a cracking product; adding sulfuric acid into the cracking product to form a reaction solution, and after the reaction is finished, filtering to obtain a cracking reforming product of the mixed phenol; and then rectifying and purifying the cracking reforming product in sequence. The method has the beneficial effects that ethyl in 2-ethyl-6-cresol in alkylphenol and isopropyl / propyl in o-isopropyl phenol are removed at a high temperature, 2, 4-xylenol and 2, 5-xylenol are subjected to transposition to obtain 3, 5-xylenol and mixed xylenol with high content of 2, 5-xylenol, and the content of 2, 5-xylenol is increased. And then controlling the temperature to be reduced to a certain temperature, carrying out step-by-step reaction on excessive phenol, ethylene and propylene in the presence of an acidic material catalyst, and rectifying to obtain products such as o-isopropylphenol and p-isopropylphenol.

The invention is suitable for the technical field of UV curing glue dissolving agents, and provides a glass surface UV curing glue dissolving agent, which comprises the following components by mass: 65-90 parts of ethanol, 1-3 parts of a surfactant, 0.9-2.2 parts of a corrosion inhibitor, 0.5-1.2 parts of a thickener, 1-3 parts of limonene, 2-5 parts of glycerin, 6-15 parts of vegetable oil, 3-6 parts of alkyl glycoside, and 1.5-3 parts of gamma-butyrolactone. Preferably, the surface active agent is one or more of alkyl-free phenol, polyoxyethylene-polyoxypropylene block copolymer or polyether modified siloxane; preferably, the sustained release agent is one or more of benzotriazole, methyl benzotriazole or sodium silicate. The product obtained by the invention is neutral and does not corrode glass after long-time soaking, and the peptized glass can be directly put into use, so that the loss of repair is reduced; aiming at common glue in the market, the adhesive has very good dissolving capacity, and is higher in universality; and the service life is prolonged, replacement is not needed, only the solution needs to be added when the solution is insufficient, and replacement is reduced.

The application discloses an influenza virus extraction diluent and application thereof, and the diluent comprises Na2HPO4*12H2O, NaH2PO4*2H2O, NaCl, Proclin 300, ethylenediaminetetraacetic acid disodium salt dihydrate, polyoxyethylene-8-octylphenyl ether and alkylphenol polyoxyethylene ether. The polyoxyethylene-8-octylphenyl ether and the alkylphenol polyoxyethylene ether added in the diluent improve the virus extraction capacity, enhance the stability of the product, save the cost and time, provide a reference value for other products, prolong the product service life for customers, reduce the limitation, are more suitable for the temperature, and have greater market value.

This invention provides a phosphorus-free, multifunctional, environmentally friendly scouring agent, its preparation method, and its application, belonging to the field of textile printing and dyeing technology. The surfactants used in this invention (including 2-ethylhexanol alkyl glycoside, 2-propylheptanol alkyl glycoside, 2-propylheptanol xyloside, and isomeric tridecyl alcohol ether carboxylic acid) are all nonionic surfactants. The resulting phosphorus-free, multifunctional, environmentally friendly scouring agent is easily soluble in water, acid-resistant, resistant to high-concentration strong alkalis, hard water-resistant, low-foaming, and has strong penetrating power. It is widely applicable to cotton and its blended textile processes, achieving excellent whiteness and wicking effect in conventional annealing / scouring / bleaching processes. It contains no alkylphenol polyoxyethylene ethers or organophosphates, causing no environmental pollution and simplifying and making textile pretreatment processes more environmentally friendly.

The present invention relates to the technical field of polyimide film surface modifiers, and more particularly to a polyimide film surface modifier and its preparation method and application. The polyimide film surface modifier is measured in concentration and includes: amines 9.0-10.0 g / L; quaternized polyvinyl imidazole 0.7-0.8 g / L; inorganic salt 0.2-0.4 g / L; alkylphenol polyoxyethylene ether 0.25-0.35 g / L; reducing agent 1.8-2.5 mL / L; inorganic base 0.8-1.0 g / L; alcohol amines 2.5-3.5 mL / L; the rest is deionized water. After the polyimide film surface modifier is metallized to the PI film surface, full coverage is obtained in a relatively short time, so that the PI film surface produces more chemical groups of phenolic groups and amines, plasma physical modification treatment can be exempted, and there is no need to use a PI adjuster, and the function of a pore-forming agent is combined, thereby reducing the cost of metallization treatment of the polyimide film surface.

The application discloses a fuel oil stabilizer for high-viscosity residual oil blending. The fuel oil stabilizer comprises, in percentage by weight, 1-15% of a fatty amine, 0.1-1.5% of a mono-polyisobutene bis-succinimide, 0.1-2% of a non-ionic surfactant alkylphenol polyoxyethylene-polyoxypropylene alcohol ether, 1-30% of alkyl imidazole ionic liquid and / or quaternary ammonium salt ionic liquid, 10-30% of polyvinyl pyrrolidone, 10-20% of an antifoaming agent, and the rest of hydrogenated white oil. The stabilizer has good compatibility, dispersibility, aging resistance and thermal stability for high-viscosity residual oil blending fuel oil.

A simple synthetic method of adamantane formate belongs to the technical field of adamantane formate, and comprises the following steps: 1) preparing adamantane formyl chloride: under the protection of nitrogen, carrying out heating reflux reaction on adamantane carboxylic acid and an acyl chloride reagent at 0-70 DEG C for 3-6 hours, and then carrying out rotary evaporation to obtain adamantane formyl chloride; dichloromethane, an acid-binding agent and an alkyl alcohol / alkylphenol mixture are added into the adamantane formyl chloride obtained in the step 1 through a dropping funnel, the mixture reacts for 8-10 h at the temperature of 0-30 DEG C, adamantane formate is synthesized and can be used for preparing lubricating oil, and the method is easy and convenient to implement, high in reaction rate, high in product yield and high in purity.

This disclosure provides a method for preparing sulfidated alkylphenol salt products to achieve a high sulfidation ratio of sulfidated alkylphenol salt to unsulfidated alkylphenol salt / phenol in the context of neutralization and optional over-alkaliening additives. The sulfidated alkylphenol salt products are obtained by sulfidating alkylphenols with a sulfur chloride blend comprising about 40% to about 75% by weight of sulfur dichloride.

The invention provides a clethodim EC surfactant and application thereof. The clethodim EC surfactant comprises calcium dodecyl benzene sulfonate, dodecanol polyoxyethylene ether, polystyrylphenol polyoxyethylene ether and an ethylene oxide-propylene oxide high-molecular block polymer. By adding a proper surfactant product and through reasonable compatibility, the prepared preparation product can meet various requirements, and the used raw materials do not contain alkylphenol polyoxyethylene ether, are safe and environment-friendly, and have no pollution to the environment.

This invention belongs to the field of oil and gas well exploration and development technology, specifically relating to a high-temperature sealing thread grease for oil casing and its preparation method and application. The thread grease comprises the following components in parts by weight: 33-58 parts base grease, 10-40 parts magnetic fluid, 1-5 parts polyethylene glycol, 5-10 parts phosphate ester, 4-10 parts fumed silica, 3-18 parts graphite, 1-5 parts nano-molybdenum powder, 1-5 parts nano-copper powder, 6-12 parts zinc powder, 10-30 parts lead powder, 5-10 parts alkylphenol resin, 5-15 parts acrylic resin, 5-15 parts polytetrafluoroethylene, 10-18 parts diisocyanate, 10-18 parts polyurethane, 10-12 parts tetraethylene glycol dimethacrylate, and 6-11 parts nitrile rubber. This invention ensures good lubricity while maintaining excellent sealing performance under high-temperature conditions.

The invention provides a thick oil viscosity reducer, and belongs to the technical field of petrochemical engineering. According to the technical scheme, alkylphenol or alkyl naphthol and solvent oil are mixed to serve as a first component, and the carbon chain length of alkyl and the optional range of the solvent oil are limited. On the basis, nitrilotriacetic acid, ammonium citrate, sodium potassium tartrate tetrahydrate and other components are used as modifiers to be mixed with a surfactant, and a cosolvent and an auxiliary agent are added; wherein the cosolvent can be selected from ethylene glycol ether or polyoxyethylene alkylamine, and the auxiliary agent can be selected from triethanolamine or dodecanol polyoxyethylene ether sodium sulfonate; urea or ammonium carbonate is innovatively introduced into the third component to serve as a regulator and is mixed with sulfonate and glycerin, and the viscosity reduction effect can be remarkably improved. Experimental verification shows that the static viscosity reduction rate of the viscosity reducer to high-viscosity crude oil can reach 99.42%-99.85%, and the static viscosity reduction rate is comprehensively superior to the static viscosity reduction rate average level of 98%-99% in the industry.

This invention proposes a lubricating oil composition for a four-stroke engine specifically designed for unmanned aerial vehicles (UAVs) and its preparation method. The lubricating oil composition for a four-stroke engine of this invention comprises the following components: (A) a nitrogen-containing organoboron compound; (B) an alkyl diphenylamine; (C) polyisobutylene succinimide; (D) sulfonates and / or sulfurized alkylphenol salts; (E) zinc dialkyl dithiophosphate; (F) dialkyl dithiocarbamate; (G) polymethyl methacrylate; and (H) a base oil in a major amount. The structure of the nitrogen-containing organoboron compound is shown in formula (I) and / or formula (II), with the definitions of each group provided in the specification. The lubricating oil composition for a four-stroke UAV engine of this invention exhibits excellent extreme pressure anti-wear, anti-oxidation, and detergency properties, effectively suppressing the increased wear caused by the high power-to-weight ratio and harsh lubrication conditions of four-stroke UAV engines.

This invention belongs to the field of packaging and printing materials, specifically relating to a high-temperature resistant water-based micro-crosslinked transfer coating. The raw materials for this high-temperature resistant water-based micro-crosslinked transfer coating consist of the following components: methacrylic acid, N-hydroxymethylacrylamide, butyl acrylate, methyl methacrylate, diallyl phthalate, 1,6-hexanediol diacrylate, tricyclodecanedimethylol diacrylate, trimethylolpropane triacrylate, di(trimethylolpropane)tetraacrylate, potassium persulfate, sodium bicarbonate, alkylphenol polyoxyethylene ether ammonium sulfate, nonylphenol polyoxyethylene ether, deionized water, ethanol, ammonia, wetting agent, defoamer, and film-forming agent. Its beneficial effects include a stable reaction process during the preparation of this high-temperature resistant water-based micro-crosslinked transfer coating, reducing the likelihood of slag formation or explosive polymerization; high gloss in the coating film; good adhesion to vacuum metallization; minimal fogging or whitening; high-temperature molding resistance up to 180℃; and easy peeling of PET film with a high yield.

This application relates to a pretreatment method for fluorinated resins and a method for detecting metal elements in fluorinated resins. The pretreatment method for fluorinated resins provided in this application involves mixing the fluorinated resin with a solution containing alkylphenol polyoxyethylene ether under stirring conditions to disperse the fluorinated resin and obtain a fluorinated resin slurry. This application solves the problem of PTFE powder floating on the liquid surface and having difficulty fully contacting the acid solution by adding an alkylphenol polyoxyethylene emulsifier and high-speed stirring to disperse PTFE powder in deionized water to form a slurry. Using the method of this application, unlike traditional ashing digestion methods, the safety issues in determining metal elements in polytetrafluoroethylene powder can be effectively addressed.

The present invention discloses a collector for flotation desulfurization of calcium-process vanadium extraction tailings and a preparation method thereof, which includes 1-10 parts of octyldecanol polyoxyethylene ether phosphate; 1-10 parts of fatty alcohol polyoxyethylene ether phosphate; 1-10 parts of isomeric tridecanol polyoxyethylene ether; 1-10 parts of alkylphenol polyoxyethylene ether; 1-10 parts of octyldecanol polyoxyethylene ether phosphate; 1-10 parts of isooctanol polyoxyethylene ether phosphate; 1-30 parts of N-cocoyl propanediamine acetate; 1-10 parts of lauroyl glutamate; 1-10 parts of lauroyl sarcosinate; 1-10 parts of cocoyl glycinate; 1-10 parts of coconut oil fatty acid alaninate. Compared with the prior art, the collector of the present invention has a high recovery rate of gypsum products obtained by flotation, low impurity content, high iron and vanadium content and low sulfur content in the iron concentrate remaining after flotation. It has high solubility, good foam fluidity, controllable foam life, environmental friendliness, strong collecting performance, fast flotation rate and shorter flotation time.

A fuel composition comprising a middle distillate fuel oil obtained from distillation of pyrolysis oil and, as an additive, one or more of: (a) an antioxidant; and (b) a stabilizing additive selected from the group consisting of (x) alkoxylated amine compounds; (y) an aldehyde-alkylphenol copolymer; (z) an acylated nitrogen compound; and mixtures thereof. Also disclosed are methods and uses for improving the stability of a fuel composition comprising a middle distillate fuel oil obtained from the distillation of pyrolytic oil comprising the addition to the composition of one or more additives selected from (a) and (b).