260 results about "Vinylbital" patented technology

The invention discloses a nano blocking agent for drilling fluid and a preparation method thereof, and belongs to the technical field of blocking agents, the nano blocking agent for drilling fluid is prepared by reaction of a core layer blocking agent and a shell layer blocking agent, the core layer blocking agent is prepared by reacting nano silicon dioxide, gamma-methacryloxypropyltrimethoxysilane and a first part of vinylphosphonic acid, and has secondary blocking capability; and the shell blocking agent is prepared by reacting a second part of vinyl phosphonic acid, styrene and 2-dodecene-1-yl succinic anhydride, and has the characteristic of flexibility. The nano plugging agent has rigid supporting and flexible deformation capabilities, and the high-temperature stability and compressive strength of a plugging layer are remarkably improved. The chemical binding force of the plugging agent and the rock is enhanced; the hydrolysable methoxyl reserved in the core layer provides a secondary plugging function, and the plugging validity period is prolonged. The invention relates to a preparation method of a nano blocking agent for drilling fluid, which is used for preparing the nano blocking agent for drilling fluid.

The invention provides a method for synthesizing 1, 2-bis (4-vinyl phenyl) ethane, which comprises the following steps: adding a first solvent, methyl triphenyl phosphine halide and strong alkali into a reaction flask, and uniformly stirring to obtain a first mixed solution; heating the first mixed solution and carrying out reflux reaction for 1 hour; dropwise adding a 1, 2-bis (p-formaldehyde phenyl) ethane solution until the reflux reaction is finished to obtain a second mixed solution; reducing the temperature of the second mixed solution to room temperature, and adjusting the pH value of the second mixed solution to obtain a first solution; layering the first solution, and taking an organic layer; adding a polymerization inhibitor into the organic layer to obtain a second solution; concentrating the second solution to obtain a 1, 2-bis (4-vinyl phenyl) ethane crude product; adding a poor solvent into the crude product, stirring and crystallizing; filtering the crystal to obtain a filter cake, adding a second solvent into the filter cake, and washing and drying the filter cake to obtain 1, 2-bis (4-vinyl phenyl) ethane; the method for synthesizing the BVPE is simple and low in raw material cost, and the synthesized BVPE is high in purity and free of product isomeride.

The present invention provides a 4-vinylguaiacol oxygenase mutant for synthesizing vanillin, and an engineered bacterium thereof. The 4-vinylguaiacol oxygenase mutant is an enzyme having the sequence as shown in SEQ ID NO. 1, which exhibits a double-site mutation of D27P / T216M, D27P / M351F, D27P / Y156D, M351F / Y156D, T216M / Y156D or T216M / M351F, or a single-site mutation of T216M, T216L, S280M, G307P or M351F, and can be used for catalyzing 4-vinylguaiacol to generate vanillin.

The invention relates to a preparation method of a high-lithium-affinity vinylene covalent organic framework material serving as a lithium metal negative electrode interface protective layer. The method comprises the following steps: firstly, by utilizing a simple hydrothermal synthesis method, taking 1, 3, 5-trimethyl-2, 4, 6-triazine (TMT) and 2, 2-bipyridine-5, 5-diformaldehyde (BPY) as monomers, and carrying out Aldol condensation reaction to synthesize a covalent organic framework material connected by a vinylene bond, which is named as viCOF-bpy; the electrochemical performance of the material is verified by modifying the surface of a copper pole piece with the viCOF-bpy material and then assembling a battery. The lithium-loving group on the material skeleton can promote the migration of lithium ions, and the vinylidene has very strong chemical stability, so that the electrochemical performance of the lithium metal battery can be effectively improved.

The invention relates to the technical field of tobacco smoke analysis, and discloses a gas sensor for detecting the content of 3-vinylpyridine in real time and a preparation method of the gas sensor. In order to realize accurate detection of tobacco smoke in the environment, 3-vinylpyridine in environmental gas is taken as a detection object, a SnO2 nanofiber material is further taken as a gas sensitive element, the detection sensitivity of the 3-vinylpyridine is remarkably improved, the SnO2 nanofiber material is arranged on the heating substrate, and the gas sensitive element is arranged on the heating substrate. The gas sensor generates a resistance change signal which linearly changes along with the change of the content of 3-vinylpyridine, so that the environmental tracing of the tobacco smoke is realized. Therefore, the invention provides the gas sensor with high sensitivity and high accuracy for tobacco smoke environment tracing.

The present invention relates to a vinyl pyrrolidone copolymer of N-vinyl pyrrolidone and a maleic acid comonomer wherein the vinyl pyrrolidone copolymer is functionalized with a benzophenone substituent (BP) wherein the amount of maleic acid in the vinyl pyrrolidone copolymer is less than 1 mol%, preferably from 0.1 to 0.95 mol%, further preferably from 0.1 to 0.90 mol%, more preferably from 0.1 to 0.85 mol%, more preferably from 0.2 to 0.88 mol%, and the amount of N-vinyl pyrrolidone is less than 1 mol%, preferably from 0.1 to 0.95 mol%, further preferably from 0.1 to 0.90 mol%, more preferably from 0.1 to 0.85 mol%, more preferably from 0.2 to 0.88 mol%. The invention relates to the technical field of organic solvents, in particular to a method for preparing the organic solvents, which comprises the following steps of: preferably, 1-3mol%, more preferably, 0.3-0.88 mol%, more preferably, 0.4-0.88 mol%, even more preferably, 0.5-0.85 The vinyl pyrrolidone copolymer of the present invention is particularly suitable for use in coatings of medical devices and / or medical aids. Thus, the invention also relates to a composition comprising a vinyl pyrrolidone copolymer and optionally a cross-linking agent, and a medical device having a coating comprising a cross-linked vinyl pyrrolidone copolymer and optionally a cross-linking agent.

The present application belongs to the field of rare earth separation, and particularly discloses a method for separating heavy rare earth ions. In the method, a vinyl complexing agent including at least one of vinyl phosphonic acid, vinyl sulfonic acid, vinyl acetic acid or 4-vinyl benzyl chloride is used to selectively complex heavy rare earth ions in an aqueous phase, so as to obviously increase the distribution coefficient between different heavy rare earth ions. Then, the aqueous phase containing the complex of heavy rare earth ions is subjected to extraction separation of different heavy rare earth ions with an organic phase containing an extractant, so as to achieve the purpose of improving the separation efficiency.

The invention relates to the technical field of cables, and provides a corrosion-resistant aerial insulated cable and a manufacturing method thereof. A corrosion-resistant overhead insulated cable sequentially comprises a conductor, a shielding layer and an insulating layer from inside to outside, and the insulating layer is prepared from the following raw materials in parts by weight: 65-75 parts of high-density polyethylene, 5-7 parts of modified kaolin, 13-17 parts of ethylene-tetrafluoroethylene copolymer, 0.5-2 parts of antioxidant, 1-3 parts of plasticizer, 8-10 parts of flame retardant and 0.5-1.5 parts of lubricant; wherein the modified kaolin is prepared by the following steps: firstly, modifying kaolin by vinyltriethoxysilane for the first time to obtain silanized kaolin, and then modifying the silanized kaolin by lauryl amine dipropylidene diamine and gamma-glycidyl ether oxyethyl trimethoxysilane for the second time. According to the technical scheme, the problem of poor corrosion resistance of the overhead insulated cable in the prior art is solved.

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 invention discloses an ionic gel moisture power generation and power supply system and a preparation method and application thereof, and belongs to the technical field of functional materials and waste gas monitoring. According to the system, dopamine, 1-vinyl imidazole, n-bromobutane and acrylic acid are used as raw materials, and an ionic gel moisture power generation material is prepared through an ultraviolet curing process; carbon cloth is used as an electrode to assemble a moisture power generation device, the device is integrated with a plastic pipe, and stable power support is provided for a waste gas monitoring sensor in the pipe. The ionic gel prepared by the invention has excellent cohesiveness, moisture responsiveness, ionic conductivity and mechanical stability, and the ultraviolet curing process is efficient and environment-friendly; the moisture power generation device can utilize environmental moisture to continuously generate power, solves the problem that a traditional waste gas monitoring sensor depends on an external power supply or frequently replaces a battery, is adaptive to a complex application scene of a plastic pipe, and has a wide industrial application prospect.

The invention relates to an ultrahigh-temperature and high-salinity water shutoff system and a preparation method and application thereof, and belongs to the field of oilfield water shutoff systems, and the ultrahigh-temperature and high-salinity water shutoff system comprises the following substances in parts by weight: 8-10 parts of 2-acrylamido-2-methylpropanesulfonic acid, 6-10 parts of N-vinyl caprolactam, 6-8 parts of N-isopropylacrylamide and 4-6 parts of monostearyl maleate. The invention relates to a water-based adhesive which is prepared from the following components in parts by weight: 6 to 10 parts of 2-acrylamido-2-methylpropanesulfonic acid, 3 to 5 parts of dimethylaminoethyl methacrylate, 0.2 to 0.4 part of dimethyl 2-butenedioate trimethylolpropane triacrylate, 3 to 5 parts of modified nanoscale silicon dioxide, 2 to 4 parts of modified nanoscale calcium carbonate and 100 to 120 parts of deionized water. The plugging agent provided by the invention can still maintain good plugging performance in an oil reservoir environment in which the underground temperature of an oil field exceeds 120 DEG C and / or the degree of mineralization is higher than 100000mg / L, so that the plugging efficiency of a water seepage layer of an oil well in the oil field is ensured.

The application discloses an electromagnetic interference resistant power cable and a preparation method thereof, and relates to the technical field of cables.The (4-vinylphenyl) sodium methyl sulfonate modified cross-linked polyethylene is used as a raw material to achieve the corrosion resistance effect; then the acrylic ester and the additive are uniformly mixed, and the first spraying is carried out at high temperature to form an insulating layer outside the conductor, thereby prolonging the service life of the cable; and the adhesive and the composite particles and copper nano powder are mixed to carry out the second spraying, thereby forming a composite outer shielding layer with a lotus leaf-like epidermis structure, which can achieve the corrosion resistance effect and enhance the electromagnetic shielding effect. The composite particles are formed by the reaction of zinc sulfate heptahydrate, 5-nitrobenzimidazole and lauryl amido propyl trimethyl ammonium chloride to form ZIF-8 structure loaded with lauryl amido propyl trimethyl ammonium chloride, so that the effects of wear resistance and electromagnetic interference resistance are achieved, the compatibility between the inorganic particles and the polymer matrix is improved, and good flame retardation effect is achieved.

The application discloses a platinum complex with controllable activity and a preparation method and application thereof, which is formed by coordination of vinyl siloxane, modified ligand and chloroplatinic acid; the modified ligand is prepared by reaction of maleic anhydride, allylamine and hydroxymethyl dimethyl phosphite. The application introduces amide groups and phosphite groups into the molecular chain of maleic anhydride, uses the groups as coordination compounds to coordinate with vinyl siloxane and platinum, and can improve the normal-temperature storage stability of the platinum catalyst while still keeping high catalytic activity of the platinum catalyst on the hydrosilylation reaction; when the platinum complex is used for catalyzing preparation of addition-type liquid silicone rubber, no inhibitor needs to be added, and the silicone rubber has good mechanical properties.

The utility model relates to the technical field of vinylpyridine production, and discloses a packaging device for vinylpyridine production, which comprises a working table, a support is fixedly connected to the upper surface of the working table, a storage seat is arranged in the middle of the working table, a storage bin is fixedly connected to the top of the support, and the storage bin is fixedly connected to the lower surface of the working table. An anti-overflow sleeve is fixedly connected to the lower surface of the storage bin, a quantitative valve is arranged between the storage bin and the anti-overflow sleeve, a conveying pipe is fixedly connected to the output end of the quantitative valve, and a triangular inclined plate is fixedly connected to the bottom of the anti-overflow sleeve. In the utility model, the sealing structure among the tank opening, the triangular inclined plate and the conveying pipe plays a key role, and the movement of the packaging tank enables the spring I to contract to generate thrust, so that the sealing plate is tightly attached to the tank opening, raw materials can be effectively prevented from overflowing, the canning process is ensured to be clean and tidy, and the waste of the raw materials is reduced; and by adopting the mode of filling from the tank bottom to the top, the problem that bubbles are generated due to raw material filling can be avoided, the canning quality is guaranteed, and the product quality is improved.

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 invention relates to a drug-loading material containing modified sodium alginate and application of the drug-loading material in pesticide preparations, and belongs to the technical field of pesticide pharmacy, the drug-loading material containing modified sodium alginate contains an N-vinyl caprolactam chain segment, the volume phase transition temperature of the drug-loading material can be regulated and controlled through the concentration of metal ions, and the temperature-sensitive chain segment collapses at high temperature, so that the drug-loading material containing modified sodium alginate has good stability. At low temperature, the network is loose to promote release, at low temperature, the network is compact, ineffective release is inhibited, temperature fluctuation in the field is adapted, metal ions, carboxyl of modified sodium alginate, carboxyl of dehydroabietic acid and acylamino of N-vinylcaprolactam form a dynamic coordination network, accurate gradient release is presented in weak-acid, neutral and alkaline environments, and the metal ion-modified hydrogel has good biocompatibility. Amino and carboxyl of the chitosan quaternary ammonium salt form an acid-base buffer pair, the pH response interval is further refined, release disorder caused by small fluctuation of soil acidity and alkalinity is avoided, the drug-loading material has a temperature and pH dual response function, and targeted release in a pest and disease damage high-incidence environment (high temperature and specific pH) is achieved.

The invention provides a tetravinyl benzyl indene derivative, a preparation method of the tetravinyl benzyl indene derivative, tetravinyl benzyl indene derivative thermosetting hydrocarbon resin and application of the tetravinyl benzyl indene derivative thermosetting hydrocarbon resin, and relates to the technical field of thermosetting resin. The tetravinyl benzyl indene derivative provided by the invention contains four vinyl groups, the crosslinking density of the thermosetting hydrocarbon resin is high, the dielectric loss tangent and dielectric constant of the tetravinyl benzyl indene derivative thermosetting hydrocarbon resin are remarkably reduced, and the heat resistance of the tetravinyl benzyl indene derivative thermosetting hydrocarbon resin is remarkably improved. Compared with trivinyl benzyl indene hydrocarbon resin and 1, 2-bis (4-vinylphenyl) ethane hydrocarbon resin, the tetravinyl benzyl indene derivative thermosetting hydrocarbon resin provided by the invention has the advantages of lower dielectric loss tangent, higher glass transition temperature, higher thermal stability, higher thermal stability and higher thermal stability. The method has a good application prospect in preparation of high-frequency and high-speed resin, bonding sheets, metal foil-coated plates, insulating substrates, resin-coated metal foils, insulating films, circuit substrates or electronic devices.

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 present invention is related to reactive dyes each of which comprises a dichlorotriazine, chlorotriazine or vinylsulphonyl group and is capable of absorbing HEVL. They are suitable for method for producing colored silicone hydrogel contact lenses each made of a silicone hydrogel material having hydroxyl groups. The present invention is also related to a colored silicone hydrogel contact lens comprising a colored circular region in which a reactive dye is applied and thereby covalently attached.

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.

To provide a curable composition having high fluidity from the viewpoint of moldability, productivity and the like.SOLUTION: The curable composition contains a compound having a vinylphenyl group and a polymerization inhibitor.

The application discloses a mineral tackifier special for shotcrete and a preparation method thereof, and relates to the technical field of tackifiers. The mineral tackifier is obtained through graft copolymerization reaction of 1-vinyl-2-pyrrolidone, acrylic acid, xanthan gum and hyperbranched borate under the action of an initiator; the hyperbranched borate is generated through reaction of a hyperbranched product and 1,4-benzenediboronic acid under the catalysis of anhydrous magnesium sulfate; and the hyperbranched product is prepared through esterification reaction of 3-(bis(2-hydroxyethyl)amino)propionic acid methyl ester and 2-methyl-2-propenoic acid-2,3-dihydroxypropyl ester. The mineral tackifier prepared by the application has good compressive strength and short setting time.

Provided herein are methods for synthesizing intermediates useful in the preparation of Mcl-1 inhibitors. In particular, provided herein are methods for synthesizing compound D, which can be prepared by reacting OPG and R 1 Compound D may be useful in the synthesis of compound A1, or a salt or solvate thereof, and compound A2, or a salt or solvate thereof. TIFF2023524263000129.tif98170

The invention discloses a novel process for synthesizing N-vinyl pyrrolidone, and provides a preparation method of N-vinyl pyrrolidone, which is efficient, low in cost and energy-saving. Raw materials of alpha-pyrrolidone and a catalyst potassium salt react in a high-vacuum reactive distillation tower, the reaction temperature is controlled, the reaction product water is distilled out from the tower top, and the generated alpha-pyrrolidone potassium salt is buffered by a buffer tank and then sent to an N-vinyl pyrrolidone reactor. In order to ensure the stable supply of acetylene in the synthesis reaction of N-vinyl pyrrolidone, a method of supplementing nitrogen with a surge tank is adopted to maintain the stability of the system. And carrying out low-pressure flash evaporation on the reacted N-vinyl pyrrolidone gas-liquid product through a surge tank, recycling the gas phase, and obtaining the N-vinyl pyrrolidone crude product from the liquid phase. According to the process, the conversion per pass of the alpha-pyrrolidone can reach 55%, the purity of the N-vinyl pyrrolidone is greater than or equal to 98%, and the energy consumption is reduced by 20%.

The invention belongs to the technical field of oil exploitation, and discloses a plugging agent for rebuilding a shaft of a low-efficiency horizontal well and a preparation method of the plugging agent, the plugging agent is prepared from the following raw materials in parts by weight: 100 parts of water, 26-31 parts of a composite monomer, 0.35-0.55 part of a functional monomer, 0.012-0.016 part of an initiator, 0.9-1.3 parts of a cross-linking agent and 0.055-0.075 part of a stabilizer; the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid, and the composite monomer is a mixture of acrylamide and 2-acrylamido-2-methyl-1-propanesulfonic acid; the functional monomer is a mixture of 1-vinyl imidazole and N-vinyl caprolactam; the initiator is prepared by mixing sodium azodiisobutyramide propanesulfonate and lauroyl peroxide. According to the invention, the azodiisobutyramide sodium propanesulfonate and the lauroyl peroxide are compounded and synergistically realize uniform monomer polymerization and dense gel.

The present in vention is directed to methods of treating a metabolic disorder in a subject in need thereof comprising administering to the subject a therapeutically effective amount of a nitro-vinyl benzene compound and administering to the subject a therapeutically effective amount of a GLP-1 agonist or analog. The present invention is also directed to kits and / or pharmaceutical compositions suitable for practicing the claimed methods.

COMPOSITION AND METHOD FOR THE CARE OF KERATINOUS MATERIALS The present invention relates to a composition comprising the following components: a) at least one C-glycoside; and b) at least one film-forming agent selected from copolymers derived from the polymerization of at least one vinyl ester monomer and optionally at least one vinyl-based monomer other than vinyl ester monomers, wherein the weight ratio between component a) and component b) is greater than 1. The present invention also relates to a non-therapeutic method for the care of keratinous materials, comprising the application of said composition to the keratinous materials. Figure for the abstract: none

The application provides an anti-high-temperature solid-phase-free drilling fluid and a preparation method thereof, and belongs to the technical field of drilling fluids in petroleum engineering. The anti-high-temperature solid-phase-free drilling fluid comprises the following components: an anti-high-temperature tackifier, an anti-high-temperature fluid loss reducer, a high-temperature stabilizer, a nano plugging agent, a pH regulator, a weighting agent and water; wherein the anti-high-temperature tackifier is a copolymer with allyl glyceryl ether, 2-acrylamide-2-methylpropanesulfonic acid and N-vinylpyrrolidone as raw materials; and the anti-high-temperature fluid loss reducer is a 2-acrylamide-2-methylpropanesulfonic acid self-polymer or a copolymer with other acrylamide monomers. The system has good rheological property, temperature resistance and fluid loss reduction performance, and is low in cost.