52 results about "4-Methoxyphenol" patented technology

The invention discloses a thermoplastic fiber-reinforced epoxy composite and applications thereof. The thermoplastic fiber-reinforced epoxy composite is prepared by taking epoxy resin and crylic acid as raw materials, thermoplastic fiber aramid woven cloths as reinforcing materials, N,N-dimethylaniline as catalyst, 4-methoxyphenol as polymerization inhibitor, trimethylolpropane triacrylate as diluted monomer, isopropylthioxanthone as photoinitiator, silane coupling agent as modifier, and metahanol as solvent, firstly synthesizing epoxy acrylate, diluting with the trimethylolpropane triacrylate, synthesizing photosensitive resin, dipping the thermoplastic fiber aramid woven cloths with the photosensitive resin, and carrying out fast forming of a novel electric car body support frame on photocuring forming equipment. The photocured electric car body support frame prepared by using the method has excellent performances, is environment-friendly, and has no harm influence on human body and ambient environment, and the curing effect meets the national standard.

The invention relates to a method for simultaneously detecting residual amounts of 13 phenolic alcohol sensitization aromatics in a toy. The method realizes simultaneous detection of 13 phenolic alcohol sensitization aromatics such as benzyl alcohol, linalool, 4-methoxyphenol, citronellol, geraniol, 4-ethoxyphenol, anise alcohol, p-tert-butylphenol, cinnamyl alcohol, eugenol, isoeugenol, amylcinnamyl alcohol and farnesol in a toy for the first time by the gas chromatography-ion trap tandem mass spectrometry technology, and fills the technical gap. The method can be used for detecting plush toys, paster toys and plastic toys (prepared from ABS, PVC and PS materials), and has a wide application range and strong applicability. The ion trap tandem mass spectrometry realizes qualification and quantification by two-stage mass spectrometry MS/MS and thus the method has good qualification and quantification effects on a toy sample having a complex matrix.

The invention relates to the technical field of communication fiber coloring solidification, in particular to optical fiber coloring ink capable of being solidified by LED. The ink is characterized by being prepared from, epoxy acrylic resin or urethane acrylate, Isopropyl tri(dioctylpyrophosphate) titanate, polyacrylic acid, 3-Aminopropyltriethoxysilane, cellulose nitrate, isopropyl alcohol, 2-Isopropylthioxanthone, sodium benzenesulfonate, benzophenone, oleic acid, a compound photosensitizer, 4-Methoxyphenol, an antifoaming agent BYK088 and a flatting agent BYK344, wherein, the compound photosensitizer is obtained by uniformly mixing a photosensitizer 184, a photosensitizer 1173 and a compound photosensitizer 907 with a mass ratio of (1 to 3):1(1 to 2). The invention further discloses a preparing method of the optical fiber coloring ink capable of being solidified by LED. The optical fiber coloring ink capable of being solidified by LED has the advantages of more energy conservation, faster coloring speed, better environment protection, longer service life of a curing light of a coloring device and lower coloring noise.

The invention provides a synthesizing method for multi-curing available optical resin. The method comprises the following steps: adding 80-110g of HDI tripolymer, 5-10g of 3-ethyl-3-(hydroxymethyl) oxacyclobutane, 4-10g of hydroxyl acrylate, 0.1g of polymerization inhibitor 4-methoxyphenol and 0.01g of catalyst dibutyltin dilaurate into a three-necked flask with a thermometer, and heating to 65 DEG C; controlling the temperature to be 60-75 DEG C, reacting for 2-3 hours, analyzing NCO group with an infrared infrared spectrometer; and stopping the heat reaction when the NCO peak does not change so as to obtain the multi-cured functional resin capable of free radical+cation+moisture reaction.

The invention discloses an LED chip cleaning solution. The LED chip cleaning solution comprises the following raw materials by mass: 10 to 15 parts of alkylolamide polyoxyethylene ether, 10 to 15 parts of sorbitan fatty acid ester polyoxyethylene ether, 5 to 8 parts of benzotriazol, 3 to 4 parts of citric acid, 1 to 2 parts of glycerin, 1 to 2 parts of ethanol, 5 to 8 parts of polyoxyethylene ether, 5 to 8 parts of hydrogen peroxide, 2 to 4 parts of ammonium hydroxide, 6 to 10 parts of 1,3-dioxolane, 6 to 8 parts of t-butyl-4-methoxyphenol and 4 to 5 parts of tripropylene glycol methyl ether. The LED chip cleaning solution is high in cleaning efficiency, strong in detergency, good in safety performance, free of pollution to environment, reduced in consumption of energy and low in washing cost; and in the process of washing, the cleaning solution causing no damage to LEDs can form a protection film on the chip, isolate air, prevent water and other molecules in the atmosphere from corroding the chip, resist oxidation and facilitates subsequent operations.

The invention discloses a UV curable water-based polyurethane adhesive, which is prepared from, by weight, 1-10 parts of polyoxypropylene glycol, 1-10 parts of polypropylene oxide glycol, 5-10 parts of isophorone diisocyanate, 0.5-2 parts of dibutyltin dilaurate, 2-5 parts of 2,2-bis(hydroxymethyl)propionic acid, 2-5 parts of 2-hydroxyethyl acrylate, 0.01-0.2 part of 4-methoxyphenol, 2-5 parts ofpoly(2,2-dimethyltrimethylene carbonate), 1-5 parts of triethylamine, 1-5 parts of KH560, 2-7 parts of nano-magnesium hydroxide, 15-20 parts of absolute ethyl alcohol, 1-5 parts of TPO-L photoinitiator, 1-5 parts of glycerolatedimethacrylate, 1-5 parts of hexanediyl bisacrylate, 1-5 parts of Terpene resin and 20-50 parts of deionized water. The invention further discloses a preparation method of the UV curable water-based polyurethane adhesive. The adhesive, applied to the field of textile, can bring excellent flame retardance and mechanical performance to textile products, and has the advantages of short curing time, good solvent resistance, high bonding strength and being green and environmentally friendly.

The present invention relates to a preparation method for polyethylene glycol mono alkyl ether unsaturated carboxylic ester, wherein a purpose of the present invention is to mainly solve the technical problem of long process route of the existing two-step method in the prior art. A technical scheme of the preparation method is that: in the presence of a catalyst, a polymerization inhibitor and an unsaturated carboxylic ester represented by a formula (I), ethylene oxide is added, and a reaction is performed at a reaction temperature of 30-185 DEG C under reaction pressure of -0.01 to 1.9 MPa to obtain the polyethylene glycol mono alkyl ether unsaturated carboxylic ester, wherein the catalyst is SnCl2 and BF3, a weight ratio of SnCl2 to BF3 is 1:0.5-20, the polymerization inhibitor is hydroquinone and/or 4-methoxyphenol, R1 is hydrogen atom or methyl, and R2 is C1-C8 alkyl. With the technical scheme, the technical problem is solved well. The preparation method can be applicable for polyethylene glycol mono alkyl ether unsaturated carboxylic ester production.

The invention belongs to the technical field of organic synthesis. An ultrasonic vibration technology is adopted to accelerate the movement of chemical balance to a product direction. The invention relates to a preparation method of hexa(4-methoxyphenoxyl)cyclotriphosphazene. The method comprises a salt forming process, a nucleophilic substitution process and a post-treatment process, and concretely comprises the following steps: adding a 4-methoxyphenol solution into an acid binding agent solution in a dropwise manner under 800-1000W ultrasonic conditions, and reacting at room temperature for 10-30min to obtain a 4-methoxyphenol salt solution; adding a hexachlorocyclotriphosphazene solution into the 4-methoxyphenol salt solution in a dropwise manner under 800-1000W ultrasonic conditions, and reacting at 35-60DEG C for 1-4h; carrying out a refluxing reaction for 8-12h to obtain a hexa(4-methoxyphenoxyl)cyclotriphosphazene solution; and carrying out reduced pressure distillation to evaporate a solvent in the obtained system, dissolving the obtained concentrated in dichloromethane, washing by deionized water, drying, and carrying out reduced pressure distillation to obtain the target product hexa(4-methoxyphenoxyl)cyclotriphosphazene. The preparation method has the advantages of mildness and easy control of reaction conditions, and high yield, and is suitable for preparing hexa(4-methoxyphenoxyl)cyclotriphosphazene.

The invention discloses a preparation method of heat-resisting transparent heat-insulation UV-curing coating, belonging to the technical field of photocureable coating. The preparation method comprises steps of respectively putting the mixed solution of dispersing agent and diluent and different nano-powders into a beaker, adjusting pH to 9.0-10.0, carrying out ultrasonic dispersion after stirred on a magnetic stirrer, and stopping ultrasonic agitation to obtain nano-powder slurry; according to different nano-powder mass ratios, evenly mixing the slurry; putting hydroxy silicone oil, crylic acid and 4-methoxyphenol into the breaker at the temperature of 110 DEG C to react for 5 hours, and preparing UV curing resin; adding nano slurry into the UV curing resin, defoamer, thickening agent and film-forming auxiliary agent, adjusting pH to 9.0-10.0 to obtain heat-resisting transparent heat-insulation UV-curing coating. The invention has simple preparation and construction technology, effectively lowers production cost and is favorable for popularizing to the market. The prepared coat has higher visible light transmittance, infra-red reflectivity, transparent coat, strong hardness, favorable adhesive force, resistance to soiling, ultraviolet ray aging resistance and high temperature resistance.

The invention discloses an industrial method for synthesizing 2-(4-methoxyphenoxy)-propionic acid through phase transfer, which comprises the following steps of: stirring and mixing 4-Methoxyphenol, sodium hydroxide, a phase transfer catalyst and water, and reacting at normal temperature and normal pressure for 10 to 20 minutes to obtain mixed feed liquid; adding 2-chloro-propanoic acid and an organic phase into the mixed feed liquid, and reacting for 0.5 to 1.5 hours to obtain a product of 2-(4-methoxyphenoxy)-propionic acid; regulating the reaction liquid subjected to reaction to be acid byusing HCl or sulfuric acid solution, and standing to separate a water phase and the organic phase; and evaporating organic phase separation liquid to remove a solvent, and performing acid-base recrystallization to obtain the 2-(4-methoxyphenoxy)-propionic acid. When the reaction is finished, the yield of the 2-(4-methoxyphenoxy)-propionic acid is over 90 percent, the reaction temperature is reduced to 40-60 DEG C, the reaction time is only 0.5 to 1.5 hours, and the content of 2-(4-methoxyphenoxy)-propionic acid in the final product is 99.5 percent.

The invention discloses a preparation method of 1, 2-bis (2-(4-methoxyphenoxy)ethoxy)ethane, and aims to solve the problems that in the prior art, used reactants are not environmentally friendly, theyield is low and the like. 4-methoxyphenol and triethylene glycol are used as raw materials, and the preparation method comprises the following steps: (1), stirring at 20 DEG C, adding 4-methoxyphenoland triethylene glycol into acetonitrile, adding dicyclohexylcarbodiimide, reacting for 24h at 85 DEG C, and evaporating out acetonitrile to obtain a turbid liquid 1; (2), adding dichloromethane intothe turbid liquid 1, filtering, washing for 3 times with 1M sodium hydroxide, washing twice with saturated sodium chloride, drying by anhydrous magnesium sulfate, and evaporating out dichloromethaneto obtain a yellow powdery solid 2; (3), adding ethyl ether into the yellow powdery solid 2, raising the temperature to 35 DEG C, filtering out insolubles, cooling to -15 DEG C, lowering the temperature for 4 hours, and filtering to obtain a white powdery solid, namely 1, 2-bis (2-(4-methoxyphenoxy)ethoxy)ethane. The method is mainly applied to preparation of 1, 2-bis(2-(4-methoxyphenoxy)ethoxy)ethane.

The invention discloses a preparation method of a substituted benzoxazole derivative, i.e., (1-(5-methoxybenzo[d]oxazole-2-yl)piperidin-4-yl)methylamine. According to the preparation method, 2-amino-4-methoxyphenol is taken as a starting raw material, and a target product is obtained by carrying out ring closing, chlorination, nucleophilic substitution, ammonolysis and reduction. The compound is an important medical intermediate.

The invention relates to a green synthesis method of trimethylolpropane triacrylate. The green synthesis method comprise following steps: 1, raw materials are introduced into a reactor, heating backflow treatment is carried out until no water is detected in an obtained backflow liquid, and cooling to room temperature is carried out; 2, a water washing phase obtained in a step 4 of a former batch is introduced into a reaction vessel for water washing, an obtained methane sulfonic acid water phase is concentrated, and is recycled back into a step 1 of a next batch; 3, a sodium hydroxide solutionis added to a reaction liquid obtained through water washing for washing, an obtained mixture is allowed to stand for layering, a sulfuric acid solution is added into an obtained alkali washing waterphase for adjusting, and underpressure distillation and rectification are carried out so as to obtain acrylic acid; 4, water is added into a material obtained after alkali washing for washing, 4-methoxyphenol is added, an obtained mixed solution is allowed to stand for layering, an obtained lower layer water washing phase is recycled back into a step 2 of a next batch; and 5, a reaction materialobtained through removing of water phase is introduced into an evaporator, and vacuum pumping is carried out so as to obtain a finished product. The advantages are that: recycling of a catalyst, excess acrylic acid raw material, and a solvent is realized respectively, production cost is reduced, and at the same time waste water emission is reduced.

The invention discloses corrosion-resistant and fireproof coating. The corrosion-resistant and fireproof coating comprises, by mass, 50-60 parts of water-based polyurethane, 3-5 parts of acetone, 15-20 parts of maleic resin, 2-3 parts of nano zinc phosphate, 5-13 parts of polyurethane polymer, 11-13 parts of cellulose acetate, 1-3 parts of ammonium dodecylbenzene sulfonate, 1-2 parts of 4-methoxyphenol, 6-10 parts of polyvinyl alcohol, 1-2 parts of azo dimethyl valeronitrile, 10-15 parts of organic bentonite, 3-6 parts of triethanolamine, 2-7 parts of microgel, 2-4 parts of aluminum dihydrogenphosphate, 1-3 parts of polydimethyl siloxane, 4-7 parts of nano pigment, 2-3 parts of dipentaerythritol, 10-13 parts of filler, 2-4 parts of leveling agent, 2-3 parts of sealing agent, 5-7 parts ofdispersing agent, 2-4 parts of wetting agent, 1-3 parts of stabilizer, 3-5 parts of defoaming agent and 2-4 parts of solvent.

The invention discloses waterborne UV epoxy acrylic resin. The formula comprises the following components (by weight): 250-290 parts of epoxy resin, 40-70 parts of acrylic acid, 60-80 parts of diacidand/or polybasic acid, 0.1-1.5 parts of 4-methoxyphenol, 0.5-3 parts of N,N-dimethyl benzylamine, 80-130 parts of ethanol, 20-80 parts of N, N-dimethylethanolamine, and 200-400 parts of water. With the introduction of itaconic acid for modification of epoxy acrylate, the waterborne UV epoxy acrylic resin has good stability and good hydrophilicity, will not be hydrolyzed or layered after long-termstorage, has fast UV curing rate, and has good adhesion to a base material. The product is convenient and environmentally-friendly to use, and is pollution-free.

The invention relates to UV resin. The UV resin has a property of capability of being dried by heating and a property of waiting for UV curing. The UV resin includes, by mass, 40-60% of isocyanate, 25-45% of hydroxyethyl methylacrylate, 30-50% of polyester resin and 0.005-0.01% of a polymerization inhibitor that is 4-methoxyphenol, with the balance being a solvent. A preparing process of the UV resin and applications of the UV resin in preparation of heat transfer membranes waiting for UV curing are also disclosed. Product decoration and surface protection can be finished in one step, thus avoiding a step of spraying of a protective paint layer, saving energy, protecting the environment, and saving labor and materials. Products are beautiful and durable.

The invention discloses a synthesis method of 1,2-di(2-(4-methoxyphenoxy) ethoxy) ethane, and aims to solve the problems of long reaction time, complex post-treatment and the like in the prior art. According to the method provided by the invention, 4-methoxyphenol and 1,2-(dichloroethane group) ethane are taken as raw materials, and the method comprises the following steps: (1) carrying out stirring at 20 DEG C, adding 4-methoxyphenol and 1,2-(dichloroethane group) ethane into N,N-dimethylformamide, adding potassium hydroxide to react at 150 DEG C for 12h, and pouring a reaction solution intowater to obtain a brown turbid solution 1; (2) cooling the brown solution 1 to -15 DEG C, keeping the temperature for 4h, filtering the brown solution to obtain a white flaky solid, adding diethyl ether into the white flaky solid, raising the temperature to 35 DEG C, filtering the mixture when the mixture is hot, cooling the mixture to -15 DEG C, keeping the temperature for 4h, and carrying out filtering to obtain white powdery solid 1,2-di(2-(4-dimethoxyphenoxy) ethoxy) ethane. The method provided by the invention is mainly used for synthesizing 1,2-di(2-(4-dimethoxyphenoxy) ethoxy) ethane.

The invention discloses UV curing gloss oil with excellent explosion-proof performance. The UV curing gloss oil with the excellent explosion-proof performance is prepared from, by weight, 80-120 parts of organic dibasic acid modified epoxy acrylate active oligomer, 0.2-0.6 part of antifoaming agents, 10-30 parts of tripropylene glycol diacrylate, 10-20 parts of 1,6-hexanediol diacrylate, 4-12 parts of diphenyl ketone, 1-3 parts of 1-hydroxy-cyclohexyl benzene ketone, 4-12 parts of active amine, 0.3-0.9 part of flatting agents and 5-10 parts of water; the organic dibasic acid modified epoxy acrylate active oligomer is prepared from, by weight, 150-250 parts of E-51 epoxy resin, 30-50 parts of organic dibasic acid, 20-30 parts of succinic acid, 0-30 parts of adipic acid, 2-30 parts of glutaric acid, 0-15 parts of azelaic acid, 0-15 parts of sebacic acid, 30-70 parts of acrylic acid, 1.2-4.5 parts of triphenylphosphine, 0.3-1.8 parts of 4-methoxyphenol and 5-10 parts of water. Compared with epoxy-acrylic resin used by ordinary UV gloss oil, the UV curing gloss oil has the excellent explosion-proof performance, and due to the fact that the content of benzene rings in molecules is decreased, the anti-yellowing performance is promoted to some extent.

The invention discloses a mobile phone glass screen protective film OCA optical cement, which contains the following components in parts by weight: 20-40 parts of saturated polyacrylate containing crosslinkable groups, 15-25 parts of isobornyl methacrylate, 10-15 parts of mercaptoacetate resin, 1-5 parts of acetamide, 2-7 parts of hexamethyl phosphoryl diamide, 3-8 parts of 2,3-epoxycyclicarnyl ether, 1-6 parts of tetraethyldiaminobenzophenone, 4-8 parts of aliphatic bis(ethanol) ester, 5-10 parts of triisooctyl 3-mercaptopropionate, 1-5 parts of nanozinc oxide, 2-6 parts of nano-silicon dioxide, 1-7 parts of 4-methoxyphenol, and 0.1-1.0 parts of initiator. The mobile phone glass screen protective film OCA optical cement has the beneficial effects of being high in transmittance, good in adhesion, water resistance, anti-aging property and excellent in release force performance, easy to coat and produce, good in 100% curing environment-friendly effect, and low in price.

The invention discloses an aging-resistant flame-retardant ultraviolet-curable optical fiber coating. The aging-resistant flame-retardant ultraviolet-curable optical fiber coating is prepared from 50-57 parts by weight of propoxyglycerol triacrylate, 10-14 parts by weight of 1, 1-dimethyl-2, 2, 3, 4, 4, 4-hexafluorobutyl methacrylate, 3-6 parts by weight of ethoxylated trimethylolpropane triacrylate, 3-5 parts by weight of a photoinitiator 1844, 7-10 parts by weight of ethoxylated bisphenol A diacrylate, 5-7 parts by weight of isobornyl methacrylate, 2-4 parts by weight of gamma-aminopropyltriethoxysilane, 1-2 parts by weight of 4-methoxyphenol, 4-6 parts by weight of nano-clay, 1-2 parts by weight of methyl-(butylaminoformyl)-2-benzimidazole carbamate, and 9-13 parts by weight of an aid.The aging-resistant flame-retardant ultraviolet-curable optical fiber coating has high anti-oxidation and anti-aging properties, good leveling properties, a fast curing rate and good adhesion.

The invention discloses a waterborne polyester resin coating, which includes 6-8% of polyol, polyprotic acid and a catalyst, 2-6% of a curing agent, 4-8% of pigment, 2-6% of a filling material, 12-18% of a cosolvent and 40-80% of water. The polyol comprises 8-12% of trimethylolpropane, 12-24% of neopentylene glycol, 6-12% of glycol and 8-12% of propanediol. The polyprotic acid includes 5-15% of refined terephthalic acid, 12-24% of m-phthalic acid, 6-12% of phthalic acid, 10-18% of trimellitic anhydride, 6-12% of hexahydro-phthalic acid, 10-20% of maleic anhydride, and 5-10% of adipic acid. The waterborne polyester resin coating further includes 0.1-0.3% of 4-methoxyphenol, 6-24% of 2-butoxyethanol, 8-16% of dimethyl ethanolamine and 60-100% of deionized water. The hydrolytic stability of polyester main chains is improved, so that the aqueous insulating properties of the polyester resin coating are improved. The waterborne polyester resin coating can be widely applied to aqueous insulation devices, overcomes the defects in the prior art, and meets the actual use demand.

The invention discloses an antibacterial flame-retardant ultraviolet curing optical fiber coating. The antibacterial flame-retardant ultraviolet curing optical fiber coating is prepared from 50-57 parts by weight of polyethylene glycol acrylate, 10-14 parts by weight of 2, 2, 2-trifluoroethyl methacrylate, 3-6 parts by weight of isobornyl acrylate, 3-5 parts by weight of a photoinitiator 1173, 7-10 parts by weight of ethoxylated bisphenol A diacrylate, 5-7 parts by weight of acrylate phosphate, 2-4 parts by weight of gamma-aminopropyl triethoxysilane, 1-2 parts by weight of 4-methoxyphenol, 4-6 parts by weight of amorphous silica, 1-2 parts by weight of butyl iodopropynyl carbamate and 9-13 parts by weight of an aid. The antibacterial flame-retardant ultraviolet curing optical fiber coating contains safe and non-toxic antibacterial components and has good effects of resisting mildew and oxidation. Through use of zinc oxide, flame retardant and antibacterial effects are obtained and a sealing effect is provided. Through use of the aid, the leveling property is good, a uniform coating is formed, a curing rate is fast, and hardness, wear resistance, toughness and strong adhesion are obtained.

The invention discloses epoxy paint for automobile leaf springs. The paint comprises the following raw materials in parts by weight: 0.7-1 part of fatty acid polyethylene glycol ester, 0.4-1 part of triethanolamine, 0.8-1 part of sodium pyrophosphate, 1-2 parts of zinc ricinate, 7-9 parts of 2-hydroxyethyl methacrylate, 0.8-1 part of phosphoric pentoxide, 2-3 parts of 4-methoxyphenol, 0.6-2 parts of tetrabutylammonium bromide, 17-20 parts of acrylic acid, 6-8 parts of methyl methacrylate, 140-150 parts of epoxy resin E-5, 0.07-0.1 part of ammonium persulfate, 2-3 parts of sodium bicarbonate, 0.6-1 part of sodium dodecyl benzene sulfonate, 0.1-0.13 part of N,N-diethylaniline, 1-2 parts of 2-mercapto benzimidazole, 2-3 parts of barium stearate, 4-5 parts of dimethyl nylon acid, and 6-7 parts of bentonite. The paint has low cost, and solves the problems of large 'falling amount' of the automobile leaf springs in the prior art without environmental protection, and bad antirust capability.

The invention relates to synthesis of diphenylether-formaldehyde resin. A process comprises the following steps that 80 to 90g of diphenylether-formaldehyde resin, 32 to 40g of HDI trimers, 5g of 3-ethyl-3-hydroxymethyleneoxetane, 10g of hydroxyethyl methylacrylate, 0.1g of polymerization inhibitors of 4-methoxyphenol and 0.01g of catalysts of dibutyl tin laurate are added into a three-opening flask with a temperature indicator; the temperature is raised to 80 to 90 DEG C; the temperature is controlled to be 80 to 90 DEG C; the reaction is taken for 3 to 6hours; the heating reaction is stopped, and the diphenylether-formaldehyde resin is obtained.