107 results about "Phthalic acid" patented technology

This invention discloses a method for preparing and analyzing trans-4-aminocyclohexylacetic acid. The preparation method is as follows: 4-nitrophenylacetic acid undergoes catalytic hydrogenation in a solvent, followed by filtration. The filtrate is then treated with acid to obtain a 4-aminophenylacetic acid salt solution. The collected catalyst is activated. The 4-aminophenylacetic acid salt solution is mixed with isopropanol, barium hydroxide, tetrabutylammonium bromide, 18-crown ether-6, and dibutyl phthalate. The activated catalyst is then added to initiate a catalytic hydrogenation reaction. After the reaction, the reaction solution is cooled and filtered. The resulting solid is mixed with a preheated dilute sulfuric acid solution and stirred to form a slurry. The mixture is then filtered, and the filtrate is neutralized and filtered again. The collected filtrate is concentrated and crystallized. The crystallized precipitate is washed and dried to obtain trans-4-aminocyclohexylacetic acid. The method provided by this invention has high reaction efficiency, mild conditions, and is suitable for industrial production. It yields high product purity and reliability. Furthermore, the analytical method provided by this invention is accurate and reliable.

The application discloses an Aeromonas media strain capable of degrading PAEs and an application thereof, and belongs to the technical field of microorganisms. The strain is Aeromonas media HJ02, and the preservation number is GDMCC NO: 66828. The strain has obvious advantages in environmental adaptability and PAEs pollutant degradation activity, can efficiently degrade various PAEs and intermediate metabolites, and maintains good growth kinetic characteristics in a 0-120 h culture period. When the initial concentration of diisooctyl phthalate (DEHP) is 300 mg / L, the strain can significantly reduce the residual content of DEHP in the culture system after culture, and the 24 h degradation rate reaches 91.73 %. The application has the advantages of simple operation, safety and economy, provides efficient and stable microbial resources for PAEs pollution remediation, and has important practical value.

This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.

The application discloses an environmentally-friendly soft type yoga mat special silk-screen printing ink and a preparation method thereof, and belongs to the technical field of silk-screen printing inks. The ink comprises the following components in parts by weight: 30-50 parts of main body resin, 5-15 parts of environmentally-friendly pigment, 25-45 parts of environmentally-friendly composite solvent, 1-5 parts of adhesion promoter, 0.5-2 parts of rheological additive, 0.5-2 parts of scratch-resistant additive, and 2-8 parts of environmentally-friendly non-ortho phenyl plasticizer. The ink is extremely environmentally-friendly, meets international export standards, and is free of phthalate plasticizers, benzophenone solvents and heavy metal pigments in the whole process. Instead, the ink uses citric acid ester non-ortho phenyl plasticizers, benzene-free and ketone-free composite solvents and heavy metal-free organic pigments. The VOC content is far lower than the national limit value, the irritating odor is eliminated, and phthalate controlled substances are not detected. The ink meets the EU REACH regulation appendix XVII 51 / 52 and the EN71-3 toy safety standard, and completely solves the problem of limited export of traditional inks.

A nonwoven, a method for making such a nonwoven, and the use of waste carbon to make such a nonwoven. The nonwoven has a total carbon content (TCC) from which 10% to 100% of the TCC of the nonwoven are derived from waste carbon. The nonwoven meets one or more of the criteria a) to e) by comprising less thana) 5000 μg / kg of iso-Nonylphenolhexaethoxylate;b) 500 μg / kg of iso-Nonylphenol;c) 4.0 ng / kg of Octachlorodibenzodioxin;d) 500 μg / kg of Di-2-ethylhexyl phthalate; and / ore) 25 μg / kg of Napthalene.

This invention relates to a method for preparing fluorescent chiral helical nanoribbons via a hydrothermal reaction of 4-APA. The method involves adding 4-aminophthalic acid (4-APA) to deionized water, ultrasonically mixing the mixture, transferring it to a hydrothermal reactor, raising the temperature to 110–160°C within half an hour, and allowing the hydrothermal reaction to proceed for a certain time. Heating is then stopped, and the mixture is allowed to cool naturally to room temperature. Centrifugation separates the precipitate, which is the fluorescent chiral helical nanoribbon. This invention uses 4-APA as a precursor to synthesize a meta-condensed 4-APA dimer via a one-step hydrothermal reaction. Testing has confirmed that this is a fluorescent chiral helical nanoribbon, and the conditions for helical structure formation and the stability of the product's fluorescence properties are well-documented. The preparation method disclosed in this invention is simple to operate, low in cost, and environmentally friendly. The product simultaneously exhibits fluorescence and chirality, showing broad application potential in optoelectronic displays, information encryption, and other fields.

Provided is a polyol composition which has excellent storage stability and with which it is possible to obtain a cured object in which an excessive increase in elastic modulus at low temperatures can be suppressed while having a high elastic modulus at room temperature. Also provided is a two-component curable polyurethane resin composition.　A polyol composition according to an embodiment is a composition to be reacted with a polyisocyanate to obtain a polyurethane resin, and contains a polybutadiene polyol, a trifunctional polyether polyol, an ether-ester plasticizer, and a phthalate ester plasticizer.

This application discloses a crystal, a rare-earth-doped crystal, its preparation method, and its applications, belonging to the field of crystal materials. The chemical formula of the crystal is [Gd(L)]. 1.5 (DMA)] n Formula I; in Formula I, L is a ligand formed by deprotonated benzene polycarboxylic acid; benzene polycarboxylic acid is selected from any one of terephthalic acid, phthalic acid, and isophthalic acid; DMA is N , N -Dimethylacetamide; n ∞ represents continuous repetition and infinite extension. The crystal is rare-earth doped, and the chemical formula of the rare-earth doped crystal is [Gd]. 1‑x% (L) 1.5 (DMA)] n :x% Ln 3+ Equation II; in Equation II, x = 0.1~10; Ln 3+ Selected from Tb 3+ Or Eu 3+ Any one of the following. It has potential application value in fields such as fluorescent materials, multicolor display materials, long afterglow materials, X-ray detection and imaging materials, radiation detection dosimeters, and optical information encryption. The preparation method used in this application can be easily achieved through solution reaction under relatively mild conditions, with low cost and strong industrial feasibility.

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.

The application discloses a high-temperature-resistant polyvinyl chloride adhesive tape and a preparation method thereof, and belongs to the technical field of polymer materials and adhesive products. The high-temperature-resistant polyvinyl chloride adhesive tape comprises the following raw materials in parts by weight: synergistically modified polyvinyl chloride, diphenyl phosphine oxide, chlorinated polyethylene, diisononyl phthalate, antimony trioxide, calcium stearate, zinc stearate, an antioxidant and a leveling agent; the synergistically modified polyvinyl chloride is obtained by introducing catechol structures on the surface of polyvinyl chloride through dopamine self-polymerization deposition, forming a dynamic borate ester structure with 3-aminobenzoic acid, and constructing a Si-O-Si network structure through hydrolytic condensation reaction of octa(3-aminopropyl)silsesquioxane and N-(beta-aminoethyl)-gamma-aminopropyl triethoxysilane. The dopamine-borate ester-silicone synergistic network structure is constructed, and the diphenyl phosphine oxide is introduced for function regulation, so that the heat resistance, mechanical properties and dimensional stability of the polyvinyl chloride adhesive tape are significantly improved.

This invention relates to a one-component, moisture-curable composition comprising at least one organic polymer having an average of at least two reactive silane end groups, at least one reactive plasticizer having an average of 1 to 1.5 reactive silane end groups, optional filler, and optional at least one additive. The one-component, moisture-curable composition can be formulated to exhibit excellent properties for use as a non-exudative sealant. This invention also reduces the amount of harmful phthalate-containing plasticizers.

This invention provides a method for preparing tert-butyl 2-hydroxymethylbenzoate, the method comprising the following steps: (1) reacting tert-butyl hydrogen phthalate and isobutyl chloroformate to obtain compound 1, (2) reacting compound 1 to obtain tert-butyl 2-hydroxymethylbenzoate; the preparation method provided by this invention has a high yield and stable process, the post-processing is relatively simple, it can avoid operations such as column chromatography, and the reagents used are all conventional reagents, which reduces the production cost and is applicable to industrial scale-up production, providing technical support for the reduction of carboxylic acid compounds into primary alcohols.

This invention provides a functional bacterial community J-3 and its application in the degradation of phthalates, belonging to the field of microbial technology. The aforementioned functional bacterial community J-3 includes Agrobacterium (…). Agrobacterium sp. W221 and Delft ( Delftia sp. W141, Agrobacterium ( Agrobacterium sp. W221 was deposited on December 17, 2025, at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC M20252942, belonging to Delft (…). Delftia sp. W141 was deposited at the China Center for Type Culture Collection on December 17, 2025, with accession number CCTCC M20252940. The aforementioned functional bacterial group J-3 can ensure the simultaneous degradation of four PAEs, and the degradation effect is significantly higher than the degradation effect of any one of the strains alone.

The present invention provides a solid dispersion comprising lurasidone or a pharmaceutically acceptable salt thereof and a carrier. The carrier material includes polyvinyl acetate phthalate (PVAP), polyvinyl alcohol (PVA), cellulose acetate phthalate (CAP), mesoporous silica, hydroxypropyl methylcellulose (HPMC), polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer, acrylic resin, hydroxypropyl cellulose (HPC), povidone, copovidone, ethylcellulose, polyoxyethylene glycol, hypromellose acetate succinate (HPMCAS), hypromellose phthalate (HPMCP), or a combination thereof.

The present application provides a BOG helium extraction method and system, and a MOF slurry absorbent and a preparation method thereof. The absorbent comprises 20-40wt% of a metal organic framework material and 60-80wt% of an organic solvent; the metal organic framework material comprises at least one of HKUST-1, CALF-20, ZIF-67 and ZIF-8; and the organic solvent comprises at least one of dimethyl phthalate, 1,3-dimethyl-2-imidazolinone, N-methyl pyrrolidone, sulfolane and methylcyclohexane. The BOG helium extraction method comprises: pretreating BOG raw gas to obtain He and N2 mixed gas; and under specific temperature and pressure conditions, contacting the He and N2 mixed gas with a volume ratio of 15-30:1 with the MOF slurry absorbent to obtain He. The technical scheme of the present application realizes efficient BOG absorption-adsorption separation and helium extraction under mild temperature and pressure conditions.

The application discloses a di(2-ethylhexyl) phthalate degrading bacterium, a bacterial composition and application thereof. The degrading bacterium is named Sphingomonas parapaucimobilis GHQ28 and Stenotrophomonas maltophilia GHQ31. Research finds that GHQ28 and GHQ31 have chemotaxis to DEHP and downstream metabolites thereof, and there is a synergistic interaction between the two bacteria; the growth and DEHP degradation speed of the two strains under co-culture conditions are faster than that under single culture conditions. The bacterial composition composed of the two strains has a highest degradation rate of 99.2±0.59% to 400mg / L DEHP within 72h, compared with single culture, the total biomass is increased by 1.4-50.3 times, and the DEHP degradation rate is increased by 1.07-58.82 times. The application provides a new technical means for remediation of DEHP contaminated soil or water.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for degrading phthalic acid ester pollutants using photo-activated periodate. The method involves adding periodate to the reaction system and applying light irradiation. Under light, periodate continuously generates various free radicals, which can attack phthalic acid esters, achieving efficient degradation. Compared with existing advanced oxidation technologies, this invention does not require high-energy ultraviolet light sources or additional catalysts. The reaction conditions are mild, energy consumption is low, and the process is simple. It is suitable for the removal of phthalic acid ester pollutants from industrial wastewater, domestic sewage, and surface water, and has promising engineering application prospects.

This invention discloses a mica adhesive and its process for battery insulation covers, relating to the field of power battery materials technology. The mica adhesive for battery insulation covers is prepared by coating a mica tape as a carrier with an adhesive compound. The adhesive compound comprises the following raw materials in parts by weight: 35-40 parts modified styrene-ethylene-butene-styrene block copolymer, 25-30 parts modified terpene resin, 25-30 parts mica powder, 6-10 parts aluminum hydroxide, 4-8 parts ammonium polyphosphate type II, 2-3 parts silane coupling agent KH-550, 3-4 parts dioctyl phthalate, 0.4-0.8 parts antioxidant 1010, 0.2-0.6 parts ultraviolet absorber UV-531, 45-55 parts anhydrous toluene, and 20-35 parts anhydrous ethanol. This adhesive exhibits excellent compatibility and dispersibility, superior adhesion and flame retardancy, and a stable preparation process, making it suitable for the stringent requirements of power battery insulation covers.

The application discloses a linear drainage ditch for rural areas and a permeation testing method thereof, relates to the technical field of sewage collection, and solves the problems of high use cost and easy damage of the existing concrete drainage ditch for rural areas, reduces the material consumption, and reduces the construction difficulty, and the specific scheme is as follows: the drainage ditch main body is provided with a grid on the groove, the drainage ditch main body is made of a mixed material, the main agent of the mixed material is epoxy resin, the curing agent is modified amine T31 synthesized by phenol, formaldehyde and fatty amine, the diluent is acetone, the toughening agent is dibutyl phthalate, the filler is fly ash, and the aggregate is fine aggregate produced by using construction waste.

This invention discloses the preparation and application of a base-sensitive linker arm for solid-phase synthesis of polysaccharides, belonging to the fields of glycochemistry and solid-phase synthesis technology. This invention provides a base-sensitive linker arm system comprising an ester core, a linker, and a solid-phase support; one end of the ester core is connected to the solid-phase support, and the other end is connected to the linker; one end of the linker is connected to the ester core, and the other end contains exposed hydroxyl groups; the linker arm system of this invention uses phthalates or alkyl esters as the base-sensitive core structure, which can be cleaved under sodium methoxide conditions, and after hydrogenation deprotection, retains free anomeric sites at the ends of the polysaccharides, or provides amino and carboxyl groups for subsequent preparation of glycoconjugates and glycochips. During the cleavage of the linker arm, the ester protecting groups of the polysaccharide can be removed simultaneously, simplifying the deprotection step and improving efficiency and yield.

The present application relates to the technical field of chemical wastewater, and discloses a pretreatment method of chemical wastewater, which solves the problems of high treatment cost, low organic matter removal rate and poor resource utilization rate of the existing production wastewater treatment of o-aminobenzoic acid, methyl o-aminobenzoate and sodium saccharin. The method first pretreats the salt components of the wastewater to eliminate the interference of inorganic salts on the subsequent reaction, then carries out hydrolysis / alkaline hydrolysis treatment, then carries out diazotization-coupling reaction to convert the o-aminobenzoic acid components into high-value-added 2-((5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)diazenyl)benzoic acid byproducts, and finally recovers crude o-phthalic acid by cooling and precipitation. The utilization rate of the o-aminobenzoic acid components in the wastewater reaches more than 99.9%, and the method has the advantages of low treatment cost, low equipment investment, short process flow, high resource utilization efficiency and complete wastewater treatment.

The application belongs to the technical field of paint preparation, and provides polyester resin powder paint with high salt mist corrosion resistance and a preparation method thereof.The powder paint is composed of a carboxyl functional polyester resin, a hydroxyalkylamide curing agent and / or trisglycidyl isocyanurate to form a film forming system, and is matched with titanium dioxide, inorganic fillers, acrylate leveling agent, benzoin and wax powder;quaternary ammonium poly-p-vinyl pyridine microgel is introduced into the paint, and double-particle-size microcapsules are added;the microcapsule core layer contains hydroxyl-terminated polydimethylsiloxane, mercaptobenzothiazole corrosion inhibitor components, polycarbodiimide and phthalate plasticizer, the shell layer is a polyurea inner shell and a polydopamine outer shell and contains a disulfide bond structure, an epoxy silane hydrolysis and condensation layer is arranged on the outer layer and loads the microgel.

A compound regulator for alleviating combined drought and high-temperature stress in corn is a solution prepared by adding L-valine, phthalic acid, and a Bacillus altitudinis bacterial agent to water. An application method of the compound regulator includes: before sowing, soaking corn seeds with the solution; sowing soaked corn seeds, and measuring the germination rate when the soaked corn seeds germinate; applying the compound regulator solution to soil when corn seedlings reach a three-leaf to five-leaf stage; and 7-8 days after applying the compound regulator solution, performing analysis and statistics on a plant dry weight, a root dry weight, a plant water content, or root system indicators to obtain statistical data, and determining, based on the statistical data, effectiveness of the compound regulator on alleviating combined drought and high-temperature stress in corn. The compound regulator significantly enhances resistance of corn to the combined drought and high-temperature stress.

The application discloses a high-lead soldering paste for semiconductors and a manufacturing method thereof. The high-lead soldering paste comprises 85-90% of high-lead alloy powder and 10-15% of soldering paste according to the percentage by weight. The soldering paste comprises the following raw materials according to the percentage by weight: 40-50% of modified rosin, 2.5-5% of phthalic acid, 2.5-5% of hydroxyethyl propionic acid, 2-5% of polyethylene glycol, 1-2% of sodium dodecyl benzene sulfonate, 0.5-1.5% of 2,6-di-tert-butyl-p-cresol, 0.5-1% of benzotriazole, 10-30% of propylene glycol, 5-17% of ethylene glycol monobutyl ether and 2-5% of hydroxyethyl cellulose. The high-lead soldering paste is simple to manufacture and easy to operate, has excellent wetting performance and reliable welding performance, has low spatter rate in the welding process, has no corrosion phenomenon of post-welding residues and meets the use requirements of high-reliability application scenarios.

Provided is a hydrogenation method of a phthalate-based compound. According to the present invention, after hydrogenation of the phthalate-based compound, a reaction product is stably decompressed to separate and recover unreacted hydrogen, thereby improving stability and economic efficiency of the process.

We provide tires that can improve the durability of the tire's sidewall. [Solution] The present invention is a tire having a sidewall and / or clinch, Butyl rubber, a cyclic amine having a double bond in the ring, and 24M4 dibutyl phthalate with an oil absorption capacity of 170 cm³ (24M4 DBP oil absorption capacity). 3 A rubber composition containing 100g or more of carbon black is used in the sidewall and / or clinch. Furthermore, this relates to a tire having bead reinforcement rubber.

The present application relates to a method for determining the migration amount of phthalate esters in food contact materials, belonging to the technical field of food contact material processing, the method comprises the following steps: S1, taking a representative sample; S2, ultrasonic soluble or turbid sample; S3, aqueous, acidic, ethanol-containing food simulant (ethanol volume fraction <50%); S4, ethanol-containing food simulant (50% <= ethanol volume fraction <95%); S5, oil ester-containing food simulant, 5g (accurate to 0.01g) is taken; The present application has wide application range, high detection precision, strong data reliability, strong operation standardization and meets the safety supervision requirements.

Provided is an olefin copolymerization solid catalyst component mixture that makes it possible to easily produce an olefin copolymer that has both excellent rigidity and excellent impact resistance relative to similar polymerization conditions.　An olefin copolymerization solid catalyst component mixture according to the present invention is characterized by containing a first olefin copolymerization solid catalyst component that includes magnesium, titanium, a halogen, and a succinic acid diester compound and a second olefin copolymerization solid catalyst component that includes magnesium, titanium, a halogen, and a phthalic acid diester compound, the first olefin copolymerization solid catalyst component content being at least 1 mass% but less than 37 mass% of the total of the first olefin copolymerization solid catalyst component content and the second olefin copolymerization solid catalyst component content.

The present application relates to a kind of quantitative determination electronic cigarette liquid trimellitic acid, p-phthalic acid, m-phthalic acid method, belong to electronic cigarette liquid component detection technical field, it is characterized in that: using to electronic cigarette liquid sample adds certain concentration of formic acid aqueous solution extraction and improves the acid-base environment of sample, further purify sample by vortex, filtration, using core-shell (surface porous) reversed-phase chromatographic column, realize the complete separation of three target objects, combined with liquid chromatography mass spectrometer technology, internal standard method quantitative, realize the accurate detection of trimellitic acid, p-phthalic acid, m-phthalic acid in electronic cigarette liquid.The present application has the advantages that simple operation, quantitative accurate, high sensitivity, target can be extracted from complex electronic cigarette liquid matrix and accurately quantified, can satisfy the accurate detection of trimellitic acid, p-phthalic acid, m-phthalic acid in electronic cigarette liquid.