47 results about "Vinylbital" patented technology

This invention provides an inkjet composition set that exhibits excellent blocking resistance, adhesion, tackiness, and shrinkage properties. [Solution] A radiation-curable inkjet ink composition comprising a polyfunctional monomer with three or more functions and 5-methyl-3-vinyloxazolidine-2-one, wherein the content of 5-methyl-3-vinyloxazolidine-2-one is less than 50% by mass of the total amount of the ink composition, the content of monofunctional monomers is 60% by mass or more of the total amount of polymerizable compounds, and the content of polyfunctional monomers with three or more functions is more than 1% by mass of the total amount of the ink composition.

The application discloses application of a divinyl tetrazine in cyclization of a linear polypeptide, and a structure formula of the divinyl tetrazine is; the linear polypeptide has at least two free mercapto groups, and the vinyl groups of the divinyl tetrazine are subjected to Michael addition reaction with corresponding mercapto groups to form a ring. The application provides a new use of the divinyl tetrazine, the divinyl tetrazine can be subjected to high-efficiency Michael addition reaction with two natural cysteine mercapto groups on the linear polypeptide through the vinyl groups, so that double-mercapto peg cyclization of the linear polypeptide is realized, and the purpose of limiting the conformation of the linear polypeptide and improving the stability of the linear polypeptide is achieved. Moreover, the divinyl tetrazine can be subjected to a reverse electron demand Diels-Alder reaction with trans-cyclooctene (TCO) after the two vinyl groups are subjected to reaction with mercapto groups, so that functional polypeptides can be modularly constructed by coupling with functional molecules modified with TCO, and related applications are realized.

The present application relates to a kind of monodisperse core-shell type hybrid silica microspheres containing vinyl shell and its preparation and application. Specifically, using "two-phase method" strategy, monodisperse solid silica microspheres are used as matrix, vinyl triethoxysilane and tetraethyl orthosilicate are used as raw materials, lauryl amide propyl betaine and sodium subtiliporin are used as double-template pore-forming agent, under the catalysis of urea, sol-gel reaction occurs, a layer of porous hybrid shell containing vinyl functional group is constructed on the surface of solid silica microspheres, and core-shell type silica hybrid microspheres are formed. Because the shell contains a large number of vinyl functional groups, after hydrophilic modification with captopril, it is used as the adsorbent of hydrophilic interaction chromatography, and is applied to the selective enrichment of biological samples. The core-shell type silica hybrid microspheres prepared in the present application have uniform morphology, good monodispersity, and rich vinyl functional groups on the surface, which are easy to modify and apply subsequently.

This invention belongs to the field of organic synthesis technology and relates to a precursor of an obisec key intermediate and a method for preparing the key intermediate. The method involves a [4+2] cycloaddition reaction of 4-trifluoromethylaniline, propionaldehyde, and N-vinylformamide under the catalysis of chiral phosphoric acid, yielding the obisec key intermediate precursor with high enantioselectivity. N -((2) R 4 S )-2-ethyl-6-trifluoromethyl-1,2,3,4-tetrahydroquinoline-4-yl)formamide; subsequently, the key intermediate of obisetri can be obtained through a deprotection reaction under acidic conditions. The method provided by this invention uses a small amount of chiral catalyst and commercially available reagents to efficiently obtain the key intermediate of obisetri in just two steps. R 4 S )-2-ethyl-6-trifluoromethyl-1,2,3,4-tetrahydroquinoline-4-amine; under mild conditions without the need for chiral resolution, the utilization of starting materials is greatly improved, thereby significantly increasing the yield of the target product and the economic efficiency of the process.

The present disclosure relates to ionic copolymers and terpolymers derived from monomers such as 1-alkyl-3-vinylimidazolium halides, 1-vinylimidazole, acrylamide, n-vinylpyrrolidone, and poly(ethylene glycol) methyl ether methacrylate, and their use as corrosion inhibitors in process streams in industrial systems, more specifically in oil refinery streams. The corrosion inhibitors function at concentrations below 100 ppm, temperatures up to 60° C., and in the presence of congenital waters or synthetic brines.

The application discloses a kind of vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediates and catalyst prepared from it, intermediate and the preparation method and application of catalyst. 2,4,6-tri-tert-butyl aniline is used as raw material, in the presence of catalyst, under the condition of 120 DEG C, the vinylidene acenaphthene double asymmetric alpha-diimine chemical intermediate with structure as shown in formula (I) is obtained.Compared with prior art, the application uses commercially available, low-cost and storage condition loose 2,4,6-tri-tert-butyl aniline instead of high-cost, storage harsh 2,4-di-tert-butyl aniline as reaction raw material, which effectively reduces the raw material procurement threshold and comprehensive production cost, and simplifies the storage condition.The raw material of the method is easy to obtain, low in cost, easy to operate, high in yield, and suitable for industrial scale-up production.

This invention relates to a method for preparing electronic-grade hydrofluoric acid. The invention utilizes a microchannel reactor for the fluorine oxidation reaction, significantly reducing fluorine consumption and safety hazards during production. Furthermore, the microchannel reactor enhances the gas-liquid two-phase mass transfer during the oxidation reaction, further improving impurity removal and product quality. The addition of multi-effect distillation to the distillation process not only enables secondary heat utilization but also saves on the use of high-temperature heating media at the bottom of the column, effectively reducing energy consumption. In the modified liquid, DMF serves as the solvent, cobalt nitrate provides cobalt ions, and vinylguanidine provides guanidine functional groups and amino groups. Ammonia and propanethiol are used as plasma gases to introduce amino and thiol groups onto the membrane surface. These groups help improve membrane selectivity, effectively separating metal and non-metal ions, as well as acidic impurities in the raw materials.

The purpose of the present invention is to provide an inexpensive method for producing N-vinylacetamide without material loss.　This method for producing N-vinylacetamide by using acetamide and vinyl acetate as raw materials and using a catalyst is characterized by including, in the following order, a step for synthesizing N-vinylacetamide, a step for distilling off a residual low boiling-point substance, a step for extracting N-vinylacetamide, a step for distilling off aldehydes from the residue after separation of the N-vinylacetamide, a step for adding an alkali to the residue after distillation, a purification step for separating out the catalyst, and a step for drying the recovered catalyst.

This invention belongs to the field of atomization technology, specifically relating to a coffee extract, an atomizing matrix, and an electronic atomization device. The coffee extract provided by this invention, by mass fraction, comprises 350-450 parts furfuryl alcohol, 5-10 parts furfuryl formate, 2-5 parts 2-acetylfuran, 5-10 parts 5-methylfurfural, 20-30 parts furfuryl acetate, 10-20 parts guaiacol, 30-40 parts maltol, 5-15 parts 4-ethylguaiacol, 5-15 parts difurfuryl ether, and 10-20 parts 4-vinylguaiacol. The coffee extract provided by this invention has a low caffeine content but a strong characteristic coffee aroma; when applied to an atomizing matrix, it can enhance the taste and inhalation experience of the aerosol.

This invention discloses a nopinel-based bifunctional fluorescent probe capable of simultaneously detecting hypochlorous acid and viscosity, along with its preparation method and applications. The probe is 2-(2-(5-(4-(3,3-dimethyl-1,2,3,4-tetrahydro-2,4-geomylidene-acridin-9-yl)phenyl)furan-2-yl)vinyl)-6-methoxy-3-methylbenzothiazolium iodide, abbreviated as TA-PFV-TI. This probe can specifically detect the viscosity and hypochlorous acid of a solution. Under 365 nm ultraviolet light irradiation, the probe's orange fluorescence gradually intensifies with increasing solution viscosity. The linear detection range for viscosity is 1.28 cP–1411.98 cP, with a response time within 1 second and a detection limit of 1.00 cP. Upon addition of hypochlorous acid to the probe solution, its fluorescence color changes from orange to bright blue. The linear detection range for hypochlorous acid is 0–200 μM, with a response time of 5 min and a detection limit of 2 nM. The applicable pH range is 5–9. This probe, as a bifunctional fluorescent probe capable of simultaneously detecting hypochlorous acid and viscosity, exhibits numerous advantages such as good selectivity, high sensitivity, and wide applicability, demonstrating promising application prospects.

A corrosion inhibitor composition is described. The corrosion inhibitor composition includes 1 to 15 weight percentage (wt. %) of a polymer having at least one vinylpyrrolidone unit and at least one vinyl acetate unit, 0.1 to 1 wt. % of a thioamide having 2 to 20 carbon atoms, 1 to 5 wt. % of a thioalcohol having 2 to 8 carbon atoms, 1 to 3 wt. % of a surfactant, 0 to 15 wt. % of an aliphatic alcohol having 1 to 8 carbon atoms, 30 to 60 wt. % of a solvent, and each wt. % based on a total weight of the corrosion inhibitor composition. The present disclosure also describes a method for inhibiting corrosion of a metal with the corrosion inhibitor composition of the present disclosure.

The application discloses a cannabidiol derivative and application thereof, and belongs to the technical field of medicinal chemistry. The structural general formula of the cannabidiol derivative is shown as formula (I): (I) R1 is selected from one of hydrogen, chlorine, bromine, a hydroxyl group, a cyano group, an acetoxy group, an acryloyloxy group, a benzoyl group, an acetamide group, an acrylamide group, a propiolamide group, an ethyl thiourea group, a 3-chloro-2,2-dimethylpropionyl group, a 2-ethylsulfonamide acetyl group, a 2-ethylsulfonamide-N-(2-amino-2-oxoethyl) acetyl group, a methylsulfonyl group, an ethylsulfonyl group, a vinylsulfonyl group, an alkyne propylsulfonyl group, a phenylsulfonyl group and a styrylsulfonyl group; and R2 is selected from one of C2-C5 alkyl groups. The cannabidiol derivative disclosed by the application has significantly improved anti-neuroinflammatory activity, significantly reduced cytotoxicity, and a generally improved treatment index of more than 10 times, or even more than 260 times, compared with cannabidiol.

[Problem] The purpose of the present invention is to obtain an ethylene / α-olefin / non-conjugated polyene copolymer which can be applied to LIM molding or other wide range of molding methods, and is suitable for achievement of a molded body that has excellent mechanical strength. [Solution] The present invention relates to an ethylene / α-olefin / 5-vinyl-2-norbornene copolymer which is characterized by satisfying the requirements (i) to (vi) described below. (i) The weight average molecular weight is within the range of 1,000 to 50,000. (ii) The molecular weight distribution (Mw / Mn, Mw: weight average molecular weight, Mn: number average molecular weight) as determined by gel permeation chromatography (GPC) is 2.7 or less. (iii) The intensity ratio Tαβ / Tαα of 13C-NMR spectrum is 0.0 to 0.1. (iv) The content of a constituent unit derived from 5-vinyl-2-norbornene is within the range of 0.1% by mass to 20.0% by mass. (v) The constituent unit derived from 5-vinyl-2-norbornene comprises an endo structure and an exo structure; and the (endo structure) / (exo structure) ratio is 2.5 or less. (vi) The limiting viscosity (η) as measured in decahydronaphthalene at 135°C is within the range of 0.01 dl / g to 0.8 dl / g.

This invention discloses a triphenylamine-based D-A type AIE molecule targeting STAT3, its preparation method, and its application in the diagnosis and treatment of colorectal cancer. This molecule uses triphenylamine as a donor and pyridinium as an acceptor, linked by a rigid conjugated trans-vinyl group, exhibiting aggregation-induced emission (AIE) properties. The preparation method employs a Knoevenagel condensation reaction, using 4-(diphenylamino)benzaldehyde and 1,4-dimethylpyridinium iodide as raw materials, and proceeds via a nucleophilic addition-dehydration reaction catalyzed by pyrrolidine, with a yield of 50±3% and a purity ≥98%. This molecule exhibits a fluorescence emission wavelength of 640 nm, demonstrates a significant AIE effect, can penetrate the colorectal cancer cell membrane and specifically aggregate, and shows activity against the IC50 of HCT116 and DLD1 cells. 50 The concentrations were 6.41 μM and 11.46 μM, respectively, which exerted anti-tumor effects by inhibiting STAT3 phosphorylation, enabling integrated diagnosis and treatment of colorectal cancer.

This application provides a vinylcarbazole-based anion exchange membrane, its preparation method, and its application, belonging to the field of anion separation membrane technology. The vinylcarbazole-based anion exchange membrane is prepared by copolymerization of vinylcarbazole, piperidinone, and terphenyl monomers, possessing a poly(vinylcarbazole-arylpiperidine) backbone structure. By controlling the content of vinylcarbazole monomer, this application can effectively regulate the interchain spacing of the polymer within the membrane and construct densely interconnected ion channels. Utilizing precise interchain spacing sieving, the Donnan repulsion effect, and the synergistic effect of charge-assisted hopping conduction at the nitrogen center of carbazole, this vinylcarbazole-based anion exchange membrane simultaneously achieves high proton flux and high metal ion rejection rate during diffusion dialysis. The membrane exhibits excellent performance in HCl / FeCl2 and H2SO4 / FeSO4 mixed acid / metal ion systems, and possesses good anti-swelling and durability, making it effective for the recovery of industrial waste acids, such as those used in metal processing.

This invention discloses a hydrogel-modified membrane and its preparation method. The preparation method of the hydrogel-modified membrane is as follows: under light-protected inert atmosphere, tert-butylaminoethyl methacrylate, vinylpyridine, and a photoinitiator are added to water and mixed to obtain a premixed solution. The premixed solution is then irradiated with low-intensity ultraviolet light to obtain a grafting modification solution. A polypropylene microporous membrane is then immersed in the grafting modification solution and irradiated with high-intensity ultraviolet light before the membrane is removed. The modified polypropylene microporous membrane is then washed with an organic solvent and water to obtain the hydrogel-modified membrane. This invention effectively solves the problem of easy degradation of tert-butylaminoethyl methacrylate in water after ultraviolet irradiation by utilizing a prepolymerization reaction, making tert-butylaminoethyl methacrylate applicable to the preparation of hydrophilic gel layers. The modified polypropylene microporous membrane prepared by this invention has high water flux and a small water contact angle, significantly improving the hydrophilicity of the polypropylene microporous membrane and expanding the application range of polypropylene membrane materials in aquatic environments.

The utility model discloses a 2 -vinyl pyridine production is with batching device relates to 2 -vinyl pyridine production technical field, the utility model discloses a reaction kettle main part, the side and the bottom of reaction kettle main part are fixed with feed inlet and discharge gate respectively, the top of reaction kettle main part is provided with the central rotation hole. The utility model discloses through starting control motor, can drive hollow rotating shaft and stirring vane to and fro rotation, and the material in the reaction kettle main part is back and forth staggered stirring, and simultaneously, also can drive lengthened rotating shaft and spiral blade together rotation, the raw material in the reaction kettle bottom or discharge gate place is continuously conveyed upward, thereby can let material will be in the reaction kettle more complex and comprehensive stirring, fully breaks the flow dead zone that can exist in the reaction kettle, greatly enhanced the mixing effect of material, makes material can fully intermingled mixing, effectively improved the reaction rate and conversion rate of material, provides powerful guarantee for efficient production 2 -vinyl pyridine.

The present invention provides a composition and a cured layer. The composition comprises 100 parts by weight of a first monomer, 1 to 10 parts by weight of a second monomer, 10 to 30 parts by weight of a polyurethane acrylate, and 15 to 35 parts by weight of a blocked isocyanate, wherein the first monomer is a monoacrylate compound, a monomethacrylate compound, a vinyl aromatic compound, an oxetane compound, maleic anhydride, dicyclopentadiene, N-vinylpyrrolidone, N-vinylformamide, or a combination thereof; and the second monomer is an alcohol compound having at least two reactive functional groups, wherein the reactive functional groups are acrylate groups or methacrylate groups.

This invention discloses a 4-(formaldehyde oxime)-fluoro-2-quinolinone compound and its synthetic method, belonging to the fields of organic synthetic chemistry and medicinal chemistry. Using halogen-containing fluoro-N-(2-vinylphenyl)acetamide compounds as starting materials, this invention utilizes a visible light-induced tandem cyclization reaction to obtain 4-(formaldehyde oxime)-fluoro-2-quinolinone compounds in high yield. This invention employs greener and cleaner visible light as an energy source and uses inexpensive and readily available tert-butyl nitrite and trimethylamine borane as dual-role reagents (hydrogen transfer reagent and oxime source) and halogen atom transfer reagent, respectively, avoiding the use of expensive transition metal catalysts. The raw materials are simple and readily available, the process is environmentally friendly, and the target product yield is high.

The application discloses an ultrahigh-temperature large-temperature-difference retarding agent for oil well cement and a preparation method thereof. The ultrahigh-temperature large-temperature-difference retarding agent for oil well cement is obtained through copolymerization reaction of water as a solvent, azobisdimethylaminoformamide hydrochloride as an initiator and monomers of vinyl phosphonic acid, diethyl vinyl phosphonate, divinylbenzene, triphenyl ethenyl phenol polyoxyethylene ether and N-vinyl pyrrolidone. The ultrahigh-temperature large-temperature-difference retarding agent for oil well cement is a polymer made of monomers with rigid groups, the polymer does not decompose under ultrahigh-temperature conditions and still maintains original retarding performance, the thickening time is convenient to adjust, and the retarding agent dosage is not increased, so the strength of the top cement stone is also developed relatively fast, and over-retarding is avoided.

The present application relates to a method for detecting 3-vinylpyridine in tobacco pyrolysis volatile, and belongs to the technical field of tobacco smoke detection. The present application loads zero-dimensional organic-inorganic copper-based hybrid material (5-DQL-H)-CuI2 on a test paper, and places the test paper sheet in an air environment to be detected. As the concentration of smoke increases, the color of the paper-based fluorescent sensor changes from red to orange red, orange yellow, yellow, pink, and finally to blue. Within the range of 10-400 ppm, the green channel value (G / R) and the concentration of 3-vinylpyridine show a good linear relationship. By observing the color change with the naked eye, recording and extracting the RGB value with a smartphone camera, qualitative and quantitative detection of 3-vinylpyridine can be realized.

A process for producing a nonionic N-vinyl butyrolactam iodine with high stability, characterized in that nonionic N-vinyl butyrolactam, iodine and abrasive aid are stirred at a temperature of 50°C to 90°C and a stirring speed of 150 to 800 rpm for 1 to 12 hours to produce the nonionic N-vinyl butyrolactam iodine with high stability, wherein the nonionic N-vinyl butyrolactam has a K-value of 32±1, a PD-value of the main peak of ≤ 1.6, and a water content of ≤ 2.5%, wherein the abrasive aid comprises sodium citrate.

A radiation-curable inkjet ink composition and a recording method are provided, exhibiting excellent adhesion resistance, adhesion, tack, and shrinkage properties. The radiation-curable inkjet ink composition comprises a multifunctional monomer with three or more functions and 5-methyl-3-vinyloxazolidine-2-one. The content of 5-methyl-3-vinyloxazolidine-2-one is less than 50% by mass relative to the total amount of the ink composition, the content of the monofunctional monomer is 60% by mass or more relative to the total amount of the polymerizable compound, and the content of the multifunctional monomer with three or more functions is more than 1% by mass relative to the total amount of the ink composition.

This invention discloses a novel method for preparing plastic liners for hydrogen storage cylinders, belonging to the technical field of plastic liner preparation for hydrogen storage cylinders. First, a long-chain vinylimidazolium bromide intermediate is prepared through a nucleophilic substitution reaction of N-vinylimidazolium and bromododecane. Then, anion exchange is performed with lithium bis(trifluoromethanesulfonylimide) to synthesize an alkylvinylimidazolium ionic liquid. This ionic liquid is used to modify the surface of nano-calcium carbonate to introduce reactive sites, and synergistically construct an inorganic reinforcement system with silane-modified fumed silica. Next, inorganic fillers are melt-blended with high-density polyethylene and elastomers to form a composite powder. Finally, a crosslinking agent is added, and the mixture is molded using a rotational molding process of "low-temperature melt spreading and high-temperature in-situ crosslinking." By constructing an organic-inorganic crosslinking network, the liner is endowed with excellent dimensional stability, low-temperature toughness, and fatigue reliability under wide-temperature service conditions.

The application discloses a scratch-resistant high-performance wall paint and a preparation method thereof, and belongs to the technical field of functional materials. Methyl methacrylate, methacrylic acid, ZIF8-core-shell montmorillonite and polymethyl methacrylate-b-4-vinylpyridine are used as reaction monomers, and the obtained product is polymerized under the initiation of ammonium persulfate. The polymethyl methacrylate-b-4-vinylpyridine is an amphiphilic block polymer, wherein the polymethyl methacrylate is a hydrophobic end, and the hydrophobic end can significantly improve the compatibility with the ZIF8-core-shell montmorillonite. The vinyl group in the vinylpyridine at the other end can be used as an initiation site to polymerize with the ZIF8-core-shell montmorillonite, so that the ZIF8-core-shell montmorillonite as a reinforcing phase is fixed in the polymerization network and is not prone to agglomeration.

This invention discloses a method for preparing cyclohexadienone compounds. The method uses a vinylamide derivative as a starting material and phenyldimethylsilane as a hydrogen source. Through the combined action of an oxidant and a cobalt salt, the reaction occurs in an organic solvent at a temperature of 10-110°C to generate the corresponding cyclohexadienone compound. This invention uses readily available vinylamide derivatives as starting materials and achieves rapid construction of cyclohexadienone compounds in one step by constructing a ring and two chemical bonds. The reaction conditions are mild, the operation is simple, and it has advantages such as readily available reactants, broad substrate applicability, and easy separation of the target product.

An anion exchange membrane obtainable by curing a curable composition comprising a component (a) comprising: a compound (A) and / or a compound (B) and / or a compound (C); wherein: (A) is an optionally substituted non-aromatic bicyclic structure comprising two nitrogen atoms, wherein the rings of said non-aromatic bicyclic structure are independently 4-, 5- 6- or 7-membered; wherein each of said rings comprises a nitrogen atom which may be at a bridgehead position; wherein to each of said nitrogen atoms are attached one or two groups independently selected from hydrogen, C1-3 alkyl, C5-6 cycloalkyl, and vinylbenzyl, provided that the compound comprises at least two vinylbenzyl groups; (B) is an optionally substituted 5- 6- or 7-membered non-aromatic heterocyclic ring comprising one nitrogen atom and as substituent to the ring a C1-6 alkyl group comprising a nitrogen atom; wherein to the nitrogen atom of said non-aromatic heterocyclic ring are attached one or two groups independently selected from hydrogen, C1-3 alkyl, C5-6 cycloalkyl, and vinylbenzyl, provided that the compound comprises at least two vinylbenzyl groups; (C) is an optionally substituted non-aromatic spirocyclic structure comprising two nitrogen atoms, wherein the rings of said non-aromatic spirocyclic structure are independently 4- 5- or 6-membered; wherein each of said rings comprises at least one nitrogen atom which may be at a bridgehead position; wherein to each of said nitrogen atoms are attached one or two groups independently selected from hydrogen, C1-3 alkyl, C5-6 cycloalkyl, and vinylbenzyl, provided that the compound comprises at least two vinylbenzyl groups.

The application discloses a heat-resistant hydroxycinnamic acid decarboxylase derived from abnormal Wickerham sp., and belongs to the technical field of enzyme engineering. The optimal reaction temperature of the hydroxycinnamic acid decarboxylase is 40 DEG C, and the activity is stable in the range of 40 DEG C to 70 DEG C. This provides certain theoretical basis and practical significance for industrialization of high-efficiency preparation of 4-vinyl derivatives and other high-grade perfume materials by using the hydroxycinnamic acid decarboxylase.