511 results about "Nitrile" patented technology

The invention relates to the technical field of organic synthesis, and discloses a preparation method of bromo-pyrrole nitrile. The method comprises the following steps: (1) mixing p-chlorophenylglycine, acetonitrile, trifluoroacetic acid and a catalyst, then dropwise adding acyl chloride and carrying out acylation reaction, and after the reaction is completed, purging with an inert gas; (2) under the inert gas, mixing the mixture obtained in the step (1) with inorganic salt, then dropwise adding 2-chloroacrylonitrile, carrying out cyclization reaction, and separating a liquid phase from the obtained mixture; and (3) under the inert gas, mixing the liquid phase obtained in the step (2), hydrobromic acid and hydrogen peroxide, carrying out a bromination reaction, then extracting with acetonitrile to obtain an acetonitrile layer, then removing the acetonitrile, and then carrying out cooling crystallization to obtain the bromo-pyrrolenitrile. According to the technical scheme, the reaction yield is high, different solvents do not need to be frequently replaced, and the solvents can be recycled.

The invention belongs to the technical field of gas detection, and particularly relates to a device and a method for detecting decomposition products of insulating gas perfluoroalkyl nitrile. The device comprises a gas collection module, a pretreatment module, a multi-technology combination module, a detection gas chamber and an intelligent data processing and control system, wherein the gas collection module collects and concentrates a gas sample through an equipment gas chamber sampling unit and a low-temperature enrichment unit; the pretreatment module purifies gas and converts complex components through a high-efficiency filter, a dryer and a catalytic conversion unit; the multi-technology combination module is used for separating gas by using a micro gas chromatography unit and carrying out qualitative analysis by using an infrared spectrum unit; a gas sensitive sensor array of the detection gas chamber realizes multi-dimensional detection; a storage module of the intelligent data processing and control system stores various databases, an analysis module calls the databases to analyze multi-module data, and sampling, detection and intelligent analysis of decomposition products are achieved. The problems that existing detection has a leak detection condition and lacks pertinence and high efficiency are solved.

The invention belongs to the technical field of chemical synthesis, and relates to a method for continuously synthesizing 4-bromo-2-p-chlorophenyl-5-trifluoromethyl pyrrole-3-nitrile by a microchannel reactor, which comprises the following steps: pumping a substrate solution to a first plate type micro-reaction module; respectively pumping the bromination reagent solution to a first plate type micro-reaction module, a second plate type micro-reaction module and a third plate type micro-reaction module to obtain a reaction base solution; the reaction base solution is introduced into a fourth plate type micro-reaction module, n-heptane is pumped to the fourth plate type micro-reaction module and a fifth plate type micro-reaction module, deionized water is pumped to the fourth plate type micro-reaction module and the fifth plate type micro-reaction module, and extract liquor is obtained; and carrying out separation, evaporation recovery and recrystallization to obtain a finished product. Through the multi-stage series design of the micro-channel reactor, catalytic bromination replaces traditional bromine oxidation and reaction-extraction in-situ integration, and the three major problems of low efficiency, serious pollution and poor safety of an intermittent process are solved.

The invention relates to the technical field of hydraulic engineering materials, and particularly discloses a corrosion-resistant rubber dam and a preparation method thereof. The rubber dam is prepared by the following steps: forming a composite matrix (in a mass ratio of 60: 25: 15) by using ethylene propylene diene monomer (EPDM), brominated butyl rubber (BIIR) and hydrogenated butadiene-acrylonitrile rubber (HNBR), adding silane coupling agent modified nano zirconium oxide-aluminum oxide composite powder (ZrO2-Al2O3 with the particle size of 30-80nm) as a corrosion-resistant filler, and carrying out two-stage mixing and gradient vulcanization processes. The tensile strength retention rate of the obtained product in a corrosive environment with the pH value of 1-14 is larger than or equal to 92%, the ultraviolet aging resistance life reaches 30 years, the air tightness is improved by 5 times (the leakage rate is smaller than or equal to 2% / month) compared with a traditional EPDM dam, and the dam is suitable for high-corrosive water areas such as seawater backflow and acid rain.

The present application discloses a battery cell and a preparation method therefor, a battery, and an electric device. The battery cell comprises a positive electrode sheet, a negative electrode sheet, and an electrolyte. The electrolyte comprises a first non-aqueous electrolyte solution close to the positive electrode sheet and a second gel electrolyte close to the negative electrode sheet. The first non-aqueous electrolyte solution comprises a first solvent and a first lithium salt, and the first solvent comprises a nitrile-based solvent. The second gel electrolyte comprises a polymer layer and a second non-aqueous electrolyte solution accommodated in the polymer layer. The second non-aqueous electrolyte solution comprises a second solvent and a second lithium salt, and the second solvent comprises a linear monoether solvent. The battery cell has long cycle life and good rate performance.

The sustainable hydraulic hose comprises of an inner-tube, reinforcement which renders robustness to the hose to withstand higher pressures and finally the cover compounds which is the exterior most part of the hose. The present invention relates generally to a sustainable hydraulic hose which is substantially minimizing the use of conventional fossil fuel derived raw materials. Nitrile (NBR) / SBR based innertube is used along with Nitrile (NBR) / SBR based cover compounds and the hydraulic hose accounts for at least 50 % and extendable up to 80 % sustainability. Unlike conventional hoses, which may use petroleum-based synthetic rubbers, sustainable options often incorporate recyclable or biodegradable materials like elastomers, fillers, rubber additives, plasticizers which is derived from bio- origin without depleting the non-renewable resources and at the same time it is ensured that the hoses meet high standards for both performance and environmental impact, providing users with assurance of their eco-friendly credentials.

The invention relates to the technical field of high polymer materials, in particular to a method for improving the heat resistance of melamine phenolic resin by using phthalonitrile, which comprises the following steps: uniformly mixing phthalonitrile resin powder and melamine phenolic resin powder at room temperature, and then curing and molding the uniformly mixed powder at 200-280 DEG C to obtain the heat-resistant melamine phenolic resin. The melamine phenolic aldehyde-nitrile group copolymer resin is obtained. According to the method for obtaining the melamine phenolic-nitrile resin with high thermal stability, high wear resistance and high mechanical property through copolymerization, not only can the thermal stability of the resin be greatly improved, but also the mechanical property can be enhanced, and the processing window of the melamine phenolic resin can be widened.

A non-aqueous electrolyte for a lithium secondary battery, which includes an organic solvent, a lithium salt, a first additive which is a compound represented by Formula 1, a second additive which is lithium tetrafluoroborate, and a third additive including a saturated nitrile-based compound and an unsaturated nitrile-based compound, wherein the lithium salt is different from the second additive, and a lithium secondary battery including the non-aqueous electrolyte are described herein:wherein R1 and R2 are described herein.

The invention discloses a polyarylene ether nitrile nanofiber membrane and a preparation method of the polyarylene ether nitrile nanofiber membrane through double-solvent synergistic electrostatic spinning, and relates to the field of high polymer material preparation. The method comprises the following steps: preparing two electrostatic spinning solutions with obvious volatilization rate and dissolution parameter difference, and alternately depositing two types of fibers on a collecting surface by adopting dual-channel synergistic electrostatic spinning; in the deposition and drying process, chain segments at fiber cross points are induced to swell, mutually diffuse and cure in situ to form bonding points by utilizing the poor evaporation rate of a high / low volatile solvent and the poor solvent-polymer compatibility, so that the self-densification and the structure stabilization of the nanofiber membrane are realized. The obtained nanofiber membrane has high-density in-situ bonding points and remarkably improved mechanical properties, does not need additional post-treatment such as hot pressing or solvent spraying, and is suitable for application such as interlayer reinforcement and interface toughening of composite materials. The process has continuity and controllability, and the density and mechanical properties of the membrane body can be customized by adjusting a solvent system and spinning parameters.

The invention provides a water-based binder for a negative electrode of a lithium ion battery as well as a preparation method and application of the water-based binder, and belongs to the technical field of binders and lithium ion battery auxiliary materials. The water-based adhesive is prepared from the following components in parts by mass: 0.1 to 10 parts of a water-based polymeric dispersant, 10 to 20 parts of a hydrophilic unsaturated carboxylic acid monomer I, 60 to 70 parts of a hydrophobic unsaturated nitrile monomer I, 5 to 35 parts of an acrylate monomer, 40 to 55 parts of a hydrophilic unsaturated carboxylic acid monomer II, 5 to 20 parts of an unsaturated amide monomer, 20 to 40 parts of a hydrophobic unsaturated nitrile monomer II, 0.1 to 1 part of an oil-soluble initiator and 180 to 300 parts of water. The water-based adhesive provided by the invention has relatively low swelling degree and relatively high peel strength. The negative plate prepared from the aqueous binder has good flexibility, and can reduce the internal resistance of the lithium ion battery.

The invention relates to the field of polymer functional membrane materials, and particularly provides a composite sulfonated polyarylene ether nitrile sulfone proton exchange membrane and a preparation method thereof. Sulfonated poly (arylene ether nitrile sulfone) is synthesized through nucleophilic substitution reaction, and the sulfonated poly (arylene ether nitrile sulfone) and sulfonated cobalt phthalocyanine are subjected to blending and casting to form a membrane, so that the provided composite sulfonated poly (arylene ether nitrile sulfone) proton exchange resin contains a sulfonic acid structural unit, a sulfone structural unit, a polar cyano group and a phthalocyanine structural unit; the problem that an existing proton exchange membrane is low in sulfonation degree and proton conductivity can be solved, and the proton exchange membrane has the advantages of being high in structural stability, good in mechanical property, excellent in thermal stability and high in safety. The introduction of sulfonated cobalt phthalocyanine can effectively improve the internal structure of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane, promote the conduction rate of water molecules in the membrane, and further improve the proton conductivity of the sulfonated polyarylene ether nitrile sulfone proton exchange membrane. In addition, the manufacturing process is green and simple, the compounding cost is low, and the application prospect is very wide.

The present disclosure provides a non-aqueous electrolyte solution for a lithium secondary battery, which may form a robust solid electrolyte interphase (SEI), and a lithium secondary battery in which battery performance is improved by including the same. Specifically, the non-aqueous electrolyte solution for a secondary battery includes a lithium salt, a non-aqueous organic solvent, a first additive, and a second additive, wherein the non-aqueous electrolyte solution for a secondary battery may include an oligomer including a repeating unit derived from a monomer represented by Formula 1 and a repeating unit derived from a monomer represented by Formula 2 as the first additive, and may include at least one selected from the group consisting of a nitrile-based compound, a lithium salt compound, and a cyclic carbonate compound as the second additive.

The invention discloses a fast-charging electrolyte with wide temperature range and high voltage and application thereof.The electrolyte comprises a cosolvent, a solute and a film-forming additive, the cosolvent comprises a fluoro-carboxylic ester compound and a nitrile compound, the fluoro-carboxylic ester compound and the nitrile compound both have wide liquid range and strong oxidation resistance, and the solute and the film-forming additive form a film. And a foundation is laid for wide-temperature and high-voltage application of the electrolyte. The fluorocarboxylate compound enables the electrolyte to have obvious weak solvation characteristics, and promotes rapid desolvation of lithium ions at low temperature and high rate; the nitrile compound has a high dielectric constant, so that the conductivity of the electrolyte is improved. And the two can exert respective advantages and show a synergistic effect, so that the multiplying power and the cycle performance of the lithium ion battery under wide temperature range and high voltage are greatly improved.

Disclosed herein are crystalline forms of the free base of 2-(4-(4-(aminomethyl)-1-oxo-1, 2-dihydrophthalazin-6-yl)-1-methyl-1H-pyrazol-5-yl)-4-chloro-6-cyclopropoxy-3-fluorobenzonitrile, pharmaceutically acceptable compositions comprising these crystalline forms, and methods of using these crystalline forms.

Provided in the present invention are a functionalized monomer, a raw material composition containing same for hydrogenated nitrile butadiene rubber, and a preparation method for hydrogenated nitrile butadiene rubber. In the functionalized monomer, a hydroxyl group, an ether group, an ester group and a long-chain alkyl branched structure are integrated into one macromolecular chain; and the functionalized monomer subsequently serves as a raw material monomer for preparing hydrogenated nitrile butadiene rubber, which can obtain hydrogenated nitrile butadiene rubber having better cold resistance and oil resistance.

The present invention discloses an application of a copper catalyst in the electrocatalytic selective hydrogenation of the cyano group of nitrile organic compounds to prepare primary amines. In this application, the highly selective hydrogenation of the terminal cyano group of nitrile organic compounds to synthesize primary amine organic compounds is realized under an electrochemical system. This method has the characteristics of low cost of the required catalyst, stable performance, mild conditions for hydrogenating to prepare primary amines, simple operation, environmental protection, etc., and has good application prospects.

One embodiment of the nonlinear light-absorbing material disclosed herein comprises a compound represented by the following formula (1) as its main component. In formula (1), R 1 ~R 10 Each group can be a hydrogen atom, halogen atom, saturated hydrocarbon group, haloalkyl group, unsaturated hydrocarbon group, hydroxyl group, carboxyl group, alkoxycarbonyl group, aldehyde group, acyl group, amide group, nitrile group, alkoxy group, acyloxy group, thiol group, alkylthio group, sulfonic acid group, acylthio group, alkylsulfonyl group, sulfonamide group, primary amino group, secondary amino group, tertiary amino group, or nitro group.

The application discloses a kind of flame-retardant polyamide composite material and its preparation method and application, belong to polymer material technical field, the flame-retardant polyamide composite material, including the following weight parts of component: 48~82 parts nylon resin, 3~9 parts carboxylated polyarylether nitrile, 24~40 parts bromine class flame retardant, 54~72 parts glass fiber.The carboxylated polyarylether nitrile of the present application is added to nylon resin, carboxylated polyarylether nitrile and resin and flame retardant have better compatibility, not easy to be decomposed when material is heated and burns, the carboxyl group of the carboxylated polyarylether nitrile and the end amino group of nylon molecular chain react, form stable chemical bond, to effectively improve the thermal stability of composite material, protect material in a certain range from the influence of external temperature, can significantly improve the mechanical strength and thermal stability of polyamide composite material at high temperature, improve the high-temperature aging strength retention rate of composite material.

The invention provides a method for synthesizing 6-aminocapronitrile from caprolactam. The method comprises the following steps: a gasification device is sequentially provided with a uniform distribution part, an efficient dispersion part, a high-temperature gasification part and an in-situ separation part from top to bottom; liquid-phase caprolactam is injected from the top end of the gasification device, and ammonia gas is injected through the efficient dispersion part; in the efficient dispersion part, liquid-phase caprolactam is broken in a first circular tube nest under the shearing action of gravity and ammonia gas to form liquid drops, and after high-temperature gasification, a gas phase is output from the side part of the gasification device, then enters the reactor filled with the monolithic catalyst from the bottom of the reactor, reacts through the monolithic catalyst and is output from the top of the reactor. According to the invention, caprolactam can be efficiently gasified, coking is not easy to generate, the retention time of a gas-phase reactant in the reactor can be accurately controlled, the reaction efficiency is greatly improved, the discharge amount of wastes in the production process of hexamethylenediamine is reduced, the cost is reduced, the economic benefit is improved, and a guarantee is provided for green, environment-friendly and safe production.

The application discloses a microorganism-loaded activated carbon composition, a nitrile-containing wastewater pretreatment process and device and the device, and belongs to the technical field of microorganism culture and wastewater treatment device. In view of the technical problems that the electric conduction capacity and biodegradation efficiency of biological filler are poor when an electric catalysis internal circulation aeration biological filter is used for pretreatment of nitrile-containing wastewater in the prior art, and only the biodegradability of wastewater is improved, and the organic nitrile cannot be converted into available substrate, the application provides a microorganism-loaded activated carbon composition, which comprises activated carbon loaded with Shewanella oneidensis or Rhodococcus globerulus at a mass ratio of 1:2 to 1:3, and the amount of the activated carbon loaded with Shewanella oneidensis or Rhodococcus globerulus is 10 9 ~ 10 10 CFU / g, and the composition has good electric conduction capacity and biodegradation efficiency. The application further provides a nitrile-containing wastewater pretreatment process and device, which comprises the following steps: introducing nitrile-containing wastewater into the device body, and sequentially using electric treatment and a micro-nano bubble generator for treatment, and has the advantages of low power consumption, low treatment cost, convenient and safe operation, green and environment-friendly process and the like.

1. The name of the design product: packaging bag (purple food-grade child nitrile glove). 2. The use of the design product: used for packaging of glove products. 3. The design points of the design product: in the combination of shape and pattern. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a thin product, and the left view, right view, top view and bottom view are omitted.

The present application discloses a non-fluorine polyaryletherketone (nitrile) resin, which adjusts the size and position of the long-chain side groups through the main chain structure design, further reduces the close stacking between the molecular chains, and can form a larger pore structure during the molding process, so that it has a lower dielectric constant and dielectric loss. At the same time, the material does not produce toxic and harmful substances such as fluorophosgene when treated at high temperatures, ensuring the safety of the material. The non-fluorine low-dielectric polyaryletherketone (nitrile) resin of the present application has the advantages of low dielectric constant and low dielectric loss, and is widely used in 5G and higher frequency communication fields.

The application discloses a preparation method of a fast-wetting salt-resistant polyacrylic acid resin, which comprises the following steps: (1) preparing an initiator solution: dissolving an initiator in a solvent to obtain a solution system A, wherein the initiator is selected from azobisisobutyronitrile or azobisisoheptyl nitrile; (2) preparing a monomer system: mixing monomer acrylic acid, allyl triethoxysilane, maleic anhydride and a crosslinking agent pentaerythritol triallyl ether to obtain a monomer system B; and (3) obtaining the fast-wetting salt-resistant polyacrylic acid resin through reaction: under the atmosphere of an inert gas and at a heating temperature, the solution system A and the monomer system B are simultaneously added into an emulsifier solution drop by drop, and then the reaction is carried out under heat preservation. The method is simple in process, and the obtained polyacrylic acid resin has the advantages of fast wetting, good salt resistance, excellent light transmittance and viscosity in a salt environment and the like.

The present invention relates to a process for the production of specialty mercaptans from C4 oligomerization product. The oligomer product from the commercial C4 oligomerization process is separated in desired fractions of C8 and C12 olefins and these streams are further used as feed stock for the production of the specialty mercaptans such as tert octyl mercaptan (TOM) & tert dodecyl mercaptan (TDM). These fractionated oligomer stream (C8 and C12) from the C4 oligomerization process reacts with hydrogen sulfide in presence of pretreated cation exchange resin catalyst using appropriate inhibitors such as amine precursors, nitriles and metals to produce respective sulfur compounds tert-octyl mercaptan (TOM) and tert dodecyl mercaptan (TDM).

Provided is a binder composition for a power storage device, which is capable of producing a power storage device electrode having excellent surface state, adhesion, and ion conductivity, and which is capable of improving the cycle life characteristics of a power storage device. This binder composition for an electricity storage device contains a polymer (A), a nonionic surfactant (B), and a liquid medium (C), and the polymer (A) contains an alpha, beta-unsaturated compound derived from an alpha, beta-unsaturated compound when the total of repeating units contained in the polymer (A) is taken as 100 mass%. The polymer (A) contains 1-50 mass% of a repeating unit (a1) derived from a [beta]-unsaturated nitrile compound and 40-80 mass% of a repeating unit (a2) derived from an unsaturated carboxylic acid ester, and the content ratio of the nonionic surfactant (B) is 0.1-10 parts by mass per 100 parts by mass of the polymer (A). The liquid medium (C) is at least one substance selected from the group consisting of aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, ketones, esters, ethers, glycol ethers, lactams, lactones, and amides.

The invention provides a preparation method of lithium hexafluorophosphate with low fluorine emission, and relates to the technical field of preparation of lithium hexafluorophosphate, the preparation method comprises the following steps: by taking anhydrous lithium fluoride as a lithium source in a closed reaction kettle, adding a carbonic ester and nitrile mixed organic solvent system, and adding ammonium pentafluorophosphate or an organic complex thereof as a phosphorus-containing precursor, in-situ generation and directional reaction of the fluorine-phosphorus-containing active substance are realized by controlling the slow release rate of the precursor. The solid weakly-alkaline fluorine trapping agent is arranged in the system and can dynamically adsorb or complex generated hydrofluoric acid and other fluorine-containing byproducts, so that fluorine dissipation is reduced. The reaction process is divided into three continuous windows of low-activity pre-reaction, directional main reaction and activity stabilization by regulating and controlling the reaction temperature, the stirring rate and the solvent polarity in stages, so that controllable reaction and uniform conversion of fluorine-containing phosphorus substances are ensured. And after the reaction is finished, gradually carrying out cooling crystallization, solid-liquid separation and drying to obtain a high-purity lithium hexafluorophosphate product. Therefore, generation and emission of hydrofluoric acid are remarkably reduced.

This disclosure relates to processes for the synthesis of organic compounds, and more particularly to methods for the synthesis of thioamides from nitriles using a thiol catalyst.

Various embodiments of the present disclosure relate to a composition for a body contact component of a wearable device, a body contact component of a wearable device, manufactured using same, and a method for manufacturing same. According to embodiments of the present disclosure, the composition for a body contact component of a wearable device comprises: hydrogenated nitrile butadiene rubber (HNBR); and a high-specific-gravity inorganic additive, and may have a specific gravity of 1.5-2.0. The body contact component of a wearable device, according to various embodiments of the present disclosure, may comprise HNBR and a high-specific-gravity inorganic additive and may have a specific gravity of 1.5-2.0.

The present application relates to the field of folding screen glass cover plates, and specifically discloses a UTG laminate assembly for folding screens and a preparation method thereof. The UTG laminate assembly for folding screens comprises, from top to bottom, a functional base film layer, a first thermoplastic polymer layer, an ultra-thin glass layer, and a second thermoplastic polymer layer; the functional base film layer is made of raw materials comprising the following weight components: polyimide resin, polyarylether nitrile, vapor-phase nano-silica, polypentafluoropropyl methacrylate, modified black phosphorus quantum dots, grafted microcrystalline cellulose, a promoter, and an ultraviolet absorber; the grafted microcrystalline cellulose is obtained by grafting polymethyl methacrylate on microcrystalline cellulose; the modified black phosphorus quantum dots are obtained by modifying black phosphorus quantum dots with zinc-based metal organic framework materials. The UTG laminate assembly of the present application has strong impact resistance, and can have both high hardness and light transmittance, which can ensure that the folding screen has a good appearance and visual experience under long-term use.

This invention relates to the field of rubber materials, specifically to a high-temperature resistant and crack-resistant rubber material and its preparation method. The rubber material, by weight, comprises the following components: 100 parts rubber matrix, 40-80 parts composite reinforcing filler, 3-10 parts crosslinking agent, 5-15 parts antioxidant, 3-8 parts vulcanization activator, and 2-8 parts processing aid; wherein the rubber matrix comprises hydrogenated nitrile butadiene rubber and ethylene propylene diene monomer (EPDM) rubber, with a weight ratio of 60-80:20-40. The rubber material prepared by this invention, when used as a shoe sole, meets the comfort and durability requirements of daily wear, and is also suitable for the higher requirements of abrasion resistance and damage resistance in light outdoor and work scenarios. It solves the problems of limited application scenarios and single performance of existing shoe sole materials, significantly improving the market competitiveness of shoe sole products, and has extremely high practical value and market application prospects.