54 results about "Phthalic acid ester" patented technology

The invention discloses streptomyces griseorubens and an application of the streptomyces griseorubens in phthalate pollution remediation. The bacterial strain is Streptomyces griseorubens FZ202, the preservation number of the bacterial strain is GDMCC No: 61372, the bacterial strain has good environmental adaptability and efficient degradation capacity, DEHP can be effectively degraded within 100-800 mg / L, the highest degradation efficiency can reach 94.1%, and complete degradation can be achieved. The strain is inoculated into PAEs contaminated soil and interacts with rice, DEHP residues in the soil and crop bodies can be effectively reduced, various PAEs can be synergistically degraded, and the strain has the broad-spectrum degradation characteristic. Meanwhile, through multiple mechanisms of degrading pollutants, promoting plant growth, improving the soil environment and regulating and controlling microbial communities, the strain remarkably improves the growth performance of rice and the self-cleaning capacity of soil, and has a wide agricultural application prospect.

The invention discloses a method for detecting 18 phthalic acid ester substances in brewed sauce, which specifically comprises the following steps: step 1, obtaining a sample of the brewed sauce to be detected, adding a phthalic acid ester substance internal standard working solution containing deuterated isotope and water, uniformly mixing, adding sodium chloride and acetonitrile, continuously uniformly mixing, and detecting the content of the phthalic acid ester substances in the brewed sauce to be detected; carrying out ultrasonic extraction treatment for 5-15 minutes, adding an ultrasonic extracting solution into a mixture of PSA, C18 and MgSO4, and carrying out centrifugal treatment to obtain supernate; 2, carrying out nitrogen blowing on the supernate until the supernate is nearly dry, and fixing the volume by using normal hexane to obtain a sample to be detected; and step 3, detecting by adopting a gas chromatography-tandem mass spectrometer isotope internal standard method.

The invention discloses a rhodococcus ruber WM-5 strain, and the preservation number of the rhodococcus ruber WM-5 strain is CCTCC (China Center for Type Culture Collection) NO.M2025874. Research shows that the rhodococcus ruber WM-5 strain has the functions of resisting cadmium and degrading phthalic acid ester, has extremely high degradation efficiency on DBP (dibutyl phthalate), and is relatively wide in suitable degradation condition range; the Rhodococcus ruber WM-5 strain has strong tolerance to Cd < 2 + > and PAEs, when the Rhodococcus ruber WM-5 strain is applied to PAEs polluted solution systems under the condition of different initial concentrations of PAEs and Cd-PAEs composite polluted solution systems with different initial concentrations of Cd < 2 + >, high PAEs degradation efficiency can be maintained, and technical support is provided for remediation of Cd-PAEs composite pollution. In a word, the invention makes up the technical blank of Cd-resistant PAEs degrading strains, and the Rhodococcus ruber WM-5 strain or the microbial agent thereof has great application value in the aspects of degrading phthalate and repairing Cd-PAEs composite pollutants.

The invention discloses a pharmaceutical composition for preventing and treating novel coronavirus infection, the pharmaceutical composition comprises a phthalate compound, and the phthalate compound has a structure as shown in formula I (formula I); in the formula I, R1 and R2 are the same or different and are independently selected from substituted or unsubstituted straight chain or branched chain alkyl with the carbon atom number of 1-20. The pharmaceutical composition takes a phthalate compound as an active ingredient, cell membrane fusion mediated by combination of S protein of the novel coronavirus SARS-CoV-2 and a target cell receptor ACE2 is blocked, the inhibition effect on SARS-CoV-2 virus infection is achieved, in addition, the phthalate compound not only has a remarkable inhibition effect on SARS-CoV-2 wild strains, but also has a remarkable inhibition effect on the SARS-CoV-2 wild strains. And the SARS-CoV-2 mutant strain also shows a broad-spectrum antiviral effect, and is suitable for intervention of early, mild and asymptomatic novel coronavirus infection.

The present invention relates to a method for preparing phthalic acid esters. The method for preparing phthalic acid esters comprises the following steps: first, acetaldehyde and ethyl acrylate undergo a Bayes-Hillman reaction in the presence of triethylenediamine as a catalyst to produce an enester; second, the enester produced in the first reaction undergoes a one-step dehydration and Diels-Alder reaction with ethyl acrylate to produce cyclohexene dicarboxylic acid ester; and third, the cyclohexene dicarboxylic acid ester undergoes a dehydrogenation reaction in the presence of a metal catalyst to produce the phthalic acid ester. The method has simple reaction conditions, readily available catalysts, and low cost, and is a biomass-based method for synthesizing plasticizers with great industrial potential.

The invention belongs to the technical field of environmental science and engineering, and discloses a leaf vegetable phthalate multi-path absorption contribution rate prediction method based on environmental exposure concentration. According to the method, by establishing a mathematical model, the contribution rates of three ways of root absorption, leaf surface gaseous absorption and leaf particle absorption can be respectively, quickly and accurately calculated according to monitored environmental medium concentration data. Particularly, a quantitative response relation curve between the root absorption contribution rate and the PAEs concentration in the irrigation water is mainly established and revealed when the pollution in the air is relatively stable, so that the direct influence degree of irrigation water pollution on PAEs accumulation in the plant body can be clearly defined; and a direct and quantitative decision basis is provided for controlling agricultural product safety risks through water quality management.

The present invention discloses an analytical method for the amount of phthalate ester migration in a sample enriched with a magnetic MOF material. The method belongs to the field of detection technology and comprises the following steps: pre-treating the sample to be tested so that potential phthalates in the sample migrate into a pre-treatment solution; mixing the magnetic MOF material with the pre-treatment solution and adsorbing the phthalates therein; eluting the phthalates from the magnetic MOF material with an eluent; collecting the eluate, dehydrating it through a filter membrane, and then performing gas chromatography-mass spectrometry detection. The method utilizes magnetic dispersion solid-phase extraction technology to enrich the phthalates that migrate in the sample. The method is simple to operate, does not require column loading, uses a small amount of organic solvent, has high enrichment efficiency, minimizes target compound loss, and is highly accurate. It can measure at least 26 phthalates with a low limit of quantification, making it highly suitable for determining the amount of phthalate ester migration in human body contact materials or food contact materials, particularly toys.

The invention discloses a near-infrared light enzyme catalyst as well as a preparation method and application thereof. The near-infrared light enzyme catalyst takes a polydopamine modified copper porphyrin metal organic framework as a substrate and lipase as an active component. The preparation method comprises the following steps: dissolving 5, 10, 15, 20-tetra (4-carboxyl phenyl) porphyrin TCPP in dimethylformamide DMF, uniformly mixing, adding a copper nitrate solution and benzoic acid, heating and stirring, after the reaction is finished, centrifugally separating and precipitating, and drying in vacuum to obtain the copper porphyrin metal organic framework Cu-TCPP; the preparation method comprises the following steps: dispersing Cu-TCPP in a phosphoric acid buffer solution, adding dopamine hydrochloride and lipase, stirring, centrifuging, separating solids, and freeze-drying to obtain the polydopamine-modified copper porphyrin metal organic framework-loaded lipase photo-enzyme catalyst. The near-infrared light enzyme catalyst can play a photo-enzyme synergistic catalysis role under near-infrared irradiation, and phthalate compounds can be effectively degraded.

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.

The application discloses application of an environment-friendly peroxide cyclohexanone curing agent composition in high-iron putty and belongs to the technical field of paints. Esterification materials are obtained through esterification reaction among castor oil acid, terephthalic acid and isooctanol; carbon-carbon double bonds on the molecular chain of the esterification materials are subjected to epoxidation modification to obtain epoxidized esterification materials; and dehydrogenated rosin acid and the epoxidized esterification materials are subjected to ring-opening reaction to synthesize a new desensitizing agent to replace a toxic phthalate desensitizing agent, thereby avoiding use of phthalate compounds, and ensuring that products meet the environmental protection regulations of the European Union. When the curing agent composition is used in cooperation with polyester resin, not only good desensitizing effect can be achieved, but also the putty after curing has excellent physical properties and chemical stability, and thus a powerful guarantee is provided for production and application of high-iron putty.

The present invention relates to a phthalate free propylene-ethylene copolymer having high ethylene content characterized by low hexane extractable and xylene soluble properties, while showing excellent mechanical properties. The preparation of the copolymer is carried out in the presence of a phthalate free catalyst system comprising (a) phthalate free catalyst component obtained by contacting a magnesium halide, a titanium compound having at least a Ti-halogen bond and one or more electron donor compounds comprising urea, a carbonate ether, and a 1,3-diether; (b) an alkyl aluminum compound; and (c) an external electron donor compound.

The present application relates to the technical field of cyclohexane dicarboxylic acid ester preparation, in particular to a catalyst for hydrogenation, a preparation method and application thereof, and a method for hydrogenation of phthalic acid ester. The NH3-TPD main desorption peak position of the catalyst is 170-205 DEG C, the catalyst comprises a carrier and active elements and auxiliary elements supported on the carrier, the active elements are selected from Ru, and the auxiliary elements are selected from one or more of Pd, K, Mg, B, Cs, Zn and Ca. The catalyst provided by the present application is used for hydrogenation of phthalic acid ester to prepare cyclohexane dicarboxylic acid ester, can inhibit the generation of ester exchange or etherification by-products, improve the total selectivity of the target product, and at the same time, retain certain weak acid sites, which is beneficial to realize high dispersion of active metals and improve the conversion rate of raw materials.

The invention discloses bacillus subtilis FQ7-1 for degrading phthalic acid ester and an application of the bacillus subtilis FQ7-1. The bacillus subtilis FQ7-1 for degrading the phthalic acid ester provided by the invention has the preservation number of GDMCC NO: 67355, the bacillus subtilis FQ7-1 has a better degradation effect on DBP under the conditions that the initial inoculation amount OD600 is more than 0.2, the pH is 6-9 and the temperature is 30-45 DEG C, shows higher alkali resistance and high temperature resistance on degradation of the DBP, shows broad spectrum on degradation of various PAEs, and has a good application prospect. The degradation effect on DBP and DPP is relatively good. The bacillus subtilis FQ7-1 for degrading the phthalic acid ester, provided by the invention, provides an effective breakthrough for biodegradation in practical application, and has important significance on degrading the phthalic acid ester and protecting the ecological environment.

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.

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.

This invention relates to a phthalate hydrolase mutant and its application in phthalate degradation, belonging to the field of microbial enzyme technology. The amino acid sequence of the phthalate hydrolase mutant HylD1 is shown in SEQ ID NO.1, and the nucleotide sequence of the encoding gene is shown in SEQ ID NO.2. This enzyme can catalyze the reaction to generate MMP using DMP as a substrate; or catalyze the reaction to generate MEP and EMP using DEP as a substrate. In this invention, the encoding gene of the phthalate hydrolase HylD1 from *Paracoccus koningii* BJQ0001 was artificially modified by site-directed mutagenesis at amino acid position 265, resulting in a mutant HylD1 (R265A) with higher activity. Compared with the wild-type phthalate hydrolase HylD1, the absolute enzyme activity of this phthalate hydrolase mutant HylD1 (R265A) in degrading DMP and DEP is increased by 2-fold and 3.6-fold, respectively, and a special product EMP is also produced during the degradation of DEP.

The invention provides a catalyst component for olefin polymerization, a catalyst and application thereof, the catalyst component comprises Mg, Ti, halogen and an internal electron donor, and the internal electron donor comprises methyl gallate and / or a methyl gallate derivative. The invention provides the catalyst component taking the methyl gallate and / or the derivative thereof as the internal electron donor, the activity of the catalyst component is generally higher than that of the most commonly used catalysts of phthalate and diether internal electron donors in the industry, the stereoselectivity is good, and a polymer obtained by catalysis is high in isotacticity, regular in particle size and high in bulk density.

A solid catalyst component for olefin polymerization, which is characterized in that: the total content of a 1, 3-diether compound that does not have a fluorene structure and a succinic acid diester compound is 13.0 mass% or more relative to the total amount of the contained components in terms of solid content; the molar ratio (S / T) represented by the molar content (S) of the succinic acid diester compound to the molar content (T) of the titanium is 0.71-1.30, the molar ratio (E / S) represented by the molar content (E) of the 1, 3-diether compound having no fluorene structure to the molar content (S) of the succinic acid diester compound is 0.10-0.70, the total pore volume having a diameter of 1 [mu] m or less is 0.3-1.0 cm3 / g, and the specific surface area is 200 m2 / g or more. According to the present invention, it is possible to provide a solid catalyst component for olefin polymerization, which contains an internal electron-donating compound other than a phthalate ester, and which is capable of producing an olefin polymer having excellent melt fluidity, high rigidity and few low-molecular-weight polymers.

The invention discloses application of an environment-friendly cyclohexanone peroxide curing agent composition in high-speed rail putty, and belongs to the technical field of coatings. The preparation method comprises the following steps: carrying out esterification reaction on ricinoleic acid, terephthalic acid and isooctanol to obtain an esterified material; performing epoxidation modification on a carbon-carbon double bond on a molecular chain of the esterified material to obtain an epoxidized esterified material; dehydroabietic acid and epoxidized esterification materials are used for carrying out ring-opening reaction to synthesize a new desensitizer to replace a toxic phthalate desensitizer, so that the use of phthalate compounds is avoided, and the product is ensured to conform to the environmental protection regulations of European Union. When the curing agent composition is matched with polyester resin for use, a good desensitization effect can be achieved, it can be guaranteed that cured putty has excellent physical performance and chemical stability, and a powerful guarantee is provided for production and application of high-speed rail putty.

Provided is a radiative cooling device that is flexible, has increased weather resistance, and can be produced at a low cost. The radiative cooling device includes: an infrared radiative layer A having a radiative surface H for radiating infrared light IR; and a light reflective layer B on a side of the infrared radiative layer A, which is opposite to the radiative surface H. The infrared radiative layer A is a resin material layer J having a thickness adjusted so that the resin material layer emits heat radiation energy greater than absorbed solar energy in a wavelength range from 8 μm to 14 μm. The resin material layer J includes a vinyl chloride-based resin as a resin material in which a plasticizer is mixed. The plasticizer is any of phthalic acid esters, aliphatic dibasic acid esters, and phosphoric acid esters.

The present invention provides a chlorovinyl resin plasticizer composition capable of imparting excellent plasticization and cold resistance to a chlorovinyl resin plastisol, and excellent non-leaching properties. Specifically, the chlorovinyl resin plasticizer composition contains an aliphatic diester (A) of an aliphatic dicarboxylic acid having 2 to 12 carbon atoms and an aliphatic monoalcohol having 4 to 18 carbon atoms, an aromatic diester (B) of an aromatic monocarboxylic acid having 6 to 12 carbon atoms and a diol having 2 to 12 carbon atoms, and a phthalic acid ester (C), and satisfies aliphatic diester (A): aromatic diester (B) = 65:35 to 95:5 (mass ratio), and satisfies (aliphatic diester (A) + aromatic diester (B)): phthalic acid ester (C) = 5:95 to 35:65 (mass ratio).

The invention relates to the technical field of olefin polymerization, and provides a catalyst component for a hydrocarbon polymerization reaction, a catalyst and application. The invention relates to a catalyst component for olefin polymerization reaction, the catalyst component comprises a magnesium element, a titanium element, halogen and an internal electron donor compound, and the internal electron donor compound is formed by compounding a carbonyl dicarboxylate compound with a specific structure and a phthalate compound. The carbonyl dicarboxylate compound with the specific structure of the general formula (I) and the phthalic acid ester compound with the specific structure of the general formula (II) are compounded to serve as a catalyst component for olefin polymerization reaction, and preparation of olefin polymerization catalysts and olefin polymerization reaction using the compound are not reported in literatures. When the catalyst obtained by using the compound of the internal electron donor disclosed by the invention is used for propylene polymerization reaction, the catalyst is good in hydrogen regulation sensitivity and high in polymerization activity, and the melt index of the obtained polymerization product is high.

The application discloses application of a broad-spectrum type III esterase derived from Rhodococcus in phthalate ester pollution bioremediation, and overcomes the limitation of low degradation efficiency of a natural strain; through genetic engineering technology, the esterase 5359 gene is cloned into a Rhodococcus-E.coli shuttle vector pNV18 to construct a recombinant Rhodococcus engineering bacterium WT-pNV18-5359 overexpressing the esterase. Experimental results show that the engineering bacterium significantly improves the degradation performance: in single PAEs degradation test, the degradation rates of long-chain PAEs such as DEHP, DnOP and DiNP are respectively increased by 15.71%, 13.99% and 12.82% compared with the wild type; in a mixed PAEs system, the degradation of long-chain PAEs is obviously superior, and the engineering bacterium has good genetic stability and does not affect growth. Through genetic engineering to strengthen the application of known enzymes, efficient and stable PAEs pollution bioremediation is realized.

The invention discloses a bacillus subtilis strain and an application of the bacillus subtilis strain in degradation of phthalate. According to the bacillus subtilis FQ7-2 for degrading the phthalic acid ester, the preservation number is GDMCC NO: 67356, the degradation rate of the bacillus subtilis FQ7-2 with the concentration of OD600 = 0.2 for degrading 200 ppm DBP for 4 h is as high as 96.18%, the degradation rate of the bacillus subtilis FQ7-2 for degrading 2000 DBP for 8 h is as high as 86.53%, and the bacillus subtilis FQ7-2 still has a good degradation characteristic on the DBP in the environment containing other carbon sources except the DBP; the strain has high degradation efficiency on DBP in a culture environment with a temperature of 30-45 DEG C and a pH value of 6-8, and shows a broad spectrum on PAEs degradation. The bacillus subtilis FQ7-2 provided by the invention has important application significance in repairing an environment which is seriously polluted by PAEs.

This invention relates to the fields of agricultural biotechnology and environmental remediation technology, specifically to a novel, highly efficient, and safe formulation for promoting plant growth and degrading soil phthalates, and its application. The formulation comprises (R)-5-hydroxymethyldihydrofuran-2-one and water. Experiments have shown that (R)-5-hydroxymethyldihydrofuran-2-one, at a concentration of 0.01 mM, has a significant growth-promoting effect on cruciferous vegetable Chinese flowering cabbage (Pachira aquatica), while simultaneously accelerating the degradation of dibutyl phthalate (DBP) in the soil, achieving a dual function. Experiments also show that applying 0.01 mM of A-like to DBP-contaminated soil significantly increases the plant height, root length, and biomass of Chinese flowering cabbage, promotes earlier flowering, and reduces the residual amount of DBP in the soil by 77.2%, with a degradation promotion rate exceeding 62%.

This invention belongs to the field of food safety testing technology, specifically disclosing a method for detecting phthalic acid esters (PAEs) in milk based on an Au@Ag@IP6 SERS substrate. The method includes the following steps: preparing gold nanoparticles; preparing Au@Ag@IP6 nanoparticles; preparing an Au@Ag@IP6NPs SERS substrate; preparing phthalohydrazide standards and phthalic acid ester standards; preparing phthalohydrazide generated from the reaction of phthalic acid esters; preparing milk samples with the standard and pretreatment; preparing the SERS sample; and Raman detection. This invention can uniformly convert more than thirty types of PAEs into phthalohydrazide molecules, solving the problem of PAEs' water insolubility and enabling simultaneous detection of the total amount of all types of PAEs. Compared with detection methods using other gold or silver nanoparticles as SERS substrates, this method can specifically capture phthalohydrazide molecules, resulting in higher sensitivity and a lower detection limit. After preparing the SERS substrate, only simple pretreatment is required to detect PAEs, enabling rapid detection of PAEs in milk within 15 minutes.

The application belongs to the technical field of chemical catalysts, and particularly relates to a high-activity propylene polymerization catalyst system, a preparation method and application thereof. The catalyst system comprises a main catalyst and a third component; the main catalyst takes diethoxy magnesium as a carrier, and is loaded with titanium tetrachloride and an internal electron donor; the third component comprises a silane compound and an ester compound; the internal electron donor comprises 5-tert-butyl-3-methyl phthalic acid ester. The silane compound is selected from one or both of propyl trimethoxysilane and dicyclopentyl dimethoxysilane. The ester compound is selected from one of isopropyl tetradecanoate and n-butyl hexanoate. The catalyst system can improve the catalytic activity and isotacticity of propylene polymerization, and the performance of polypropylene products, and has a good application prospect.

The invention relates to the technical field of chemical detection, in particular to an ion mobility spectrometry system and method for detecting phthalate. Comprising a light ion source, an ion migration tube, an ion gate, an ion receiving electrode, a sample thermal precipitation device, a desorption solvent generating device and a doped reagent generating device, the ion migration tube is a hollow columnar cavity, the light ion source and the ion receiving electrode are arranged at the two ends of the cavity, and the ion gate is arranged in the cavity to form an ionization area and a migration area. A sample gas inlet of the ionization area is communicated with the sample thermal precipitation device, the desorption solvent generating device and the purging gas source; and a drift gas inlet formed in the migration area is connected with a doped reagent generating device and a drift gas source. According to the method, gas-phase solvent extraction, high-temperature thermal desorption and three-body clustering proton transfer reaction are combined, and accurate determination of trace phthalic acid ester in a complex matrix is realized in a rapid sample introduction analysis process without sample pretreatment.

The invention belongs to the technical field of artificial mimic enzymes, and discloses a carboxylesterase simulant with phthalate degradation activity as well as a preparation method and application of the carboxylesterase simulant. The stimulant is Zn (II) (at) IMD PDA: beta-CD, and the structure of the stimulant takes beta-cyclodextrin as a skeleton, is bridged with an imidazole group through 1, 3-propane diamine, and is coordinated with Zn (II) ions to form a catalytic center. According to the design, a hydrophobic cavity of beta-cyclodextrin and a Zn (II)-imidazole active center are integrated into a whole, so that efficient recognition and catalytic hydrolysis of phthalate pollutants are realized. According to the preparation method, beta-cyclodextrin is taken as an initial raw material, one-pot three-step continuous reaction synthesis is carried out, the process is simple and convenient, the condition is mild, the cost is low, and the use of precious metals and tedious separation and purification steps are avoided. The simulant shows high-efficiency degradation capacity to various phthalic acid esters (such as DEHP, DBP and the like) under mild conditions, the degradation rate to the DEHP within 72 hours can reach 81.4%, and the activity of the simulant is still kept to be 98% or above after the simulant is recycled for 5 times.

The present invention provides a solid catalyst component for polymerization of an olefin, which appropriately suppresses a decrease in polymerization activity per unit time when having been supplied to the polymerization of the olefin, even without using a phthalic acid ester, and can easily prepare a polymer of an olefin, in which drying efficiency is improved, and a content ratio of a remaining volatile organic compound is greatly reduced in a short period of time. The solid catalyst component for polymerization of an olefin includes magnesium, titanium, halogen and a 1,3-diether compound, wherein a ratio of the 1,3-diether compound contained in the solid catalyst component for polymerization of an olefin is 2.50 to 15.00% by mass, and a specific surface area of the solid catalyst component for polymerization of an olefin is 250 m2 / g or larger.