Abstract

A long-acting antibacterial anti-stenosis functional urethral stent and preparation method thereof is provided; the urethral stent is a tubular structure consisting of three layers: inner, middle and outer layers; the middle layer is a fabric tube; the outer layer is a silk fibroin film carrying anti-stenosis drugs; the inner layer is an antibacterial antifouling coating, consisting of chitosan-nanosilica arrays, villi, microvilli and antibacterial drugs; the preparation method includes: after making yarns into the fabric tube by textile molding, preparing the antibacterial and anti-fouling coating on the inner surface, and the silk fibroin film carrying anti-stenosis drugs on the outer surface respectively, to obtain the long-acting antibacterial anti-stenosis functional urethral stent. The method is simple, and the prepared urethral stent has a smooth surface and good biocompatibility, which has excellent properties such as radial compression force, circumferential expansion force, resistance to bending and torsion and elastic recovery.

IPC Classes  ?

• A61L 31/16 - Biologically active materials, e.g. therapeutic substances
• A61L 31/02 - Inorganic materials
• A61L 31/10 - Macromolecular materials
• A61L 31/14 - Materials characterised by their function or physical properties
• A61M 27/00 - Drainage appliances for wounds, or the like
• D03D 3/02 - Tubular fabrics

Abstract

The present invention relates to a urethral stent having long-acting antibacterial and anti-stenotic functions and a preparation method therefor. The urethral stent is of a tubular structure and is composed of an inner layer, a middle layer, and an outer layer; the middle layer is a fabric tube; the outer layer is a silk fibroin film carrying an anti-stenotic drug; and the inner layer is an antibacterial and antifouling coating and is composed of a chitosan-nano silicon dioxide array, villi, microvilli, and an antibacterial drug. The preparation method comprises: preparing yarns into a fabric tube by using a spinning forming method, then preparing an antibacterial and anti-fouling coating on the inner surface of the fabric tube, and preparing a silk fibroin film carrying an anti-stenotic drug on the outer surface of the fabric tube, so as to prepare the urethral stent having the long-acting antibacterial and anti-stenotic functions. The method of the present invention is simple, and the prepared urethral stent is smooth in surface and good in biocompatibility, has excellent properties such as radial compression force, circumferential expansionary force, bending torsion resistance and elastic resilience, also has long-acting antibacterial and anti-stenotic functions, and can prevent excessive deposition of urethral collagen tissues, thereby achieving the purpose of treating urethral stenosis.

IPC Classes  ?

• A61L 31/10 - Macromolecular materials
• A61L 31/02 - Inorganic materials
• A61L 31/04 - Macromolecular materials
• A61L 31/06 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• A61L 31/08 - Materials for coatings
• A61L 31/14 - Materials characterised by their function or physical properties
• A61L 31/16 - Biologically active materials, e.g. therapeutic substances
• A61L 31/18 - Materials at least partially X-ray or laser opaque
• A61M 29/02 - Inflatable dilatorsDilators made of swellable materials

Abstract

33 crystal to obtain a fibroin silver nitrate solution, then adding chitosan, polyethylene glycol, and manganese dioxide to the fibroin silver nitrate solution for blending to obtain a fibroin silver nitrate mixed solution, and finally placing the fibroin silver nitrate mixed solution under an LED lamp for illumination, to obtain an antibacterial color-developing finishing agent. The prepared finishing agent is a dispersion containing nano-silver particles, fibroin, chitosan, polyethylene glycol, and manganese dioxide. The application is: padding a plasma-modified Calotropis gigantea fiber blended fabric with an antibacterial color-developing finishing agent, then drying, and then performing water vapor treatment to obtain a Calotropis gigantea fiber blended fabric having fibroin nano-silver color-developing and antibacterial functions. The finishing agent of the present invention is capable of both resisting bacteria and developing colors, and a Calotropis gigantea fabric having durable and stable antibacterial properties, excellent wrinkle resistance, and good hand feeling can be produced.

IPC Classes  ?

• D06M 15/15 - Proteins or derivatives thereof
• D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonylsReduction of metal compounds on textiles
• D06M 15/03 - Polysaccharides or derivatives thereof
• D06M 13/17 - Polyoxyalkyleneglycol ethers
• D06M 13/207 - Substituted carboxylic acids, e.g. by hydroxy or keto groupsAnhydrides, halides or salts thereof
• D06M 11/48 - Oxides or hydroxides of chromium, molybdenum or tungstenChromatesDichromatesMolybdatesTungstates

Abstract

A multifunctional supercritical fluid processor for use in a material, comprising a high-temperature, high-pressure fluid puffing processing system (12) provided with a high-temperature, high-pressure fluid processing area (12-9) and a fluid puffing buffer area (12-11), an auxiliary medium pressurization system, a carbon dioxide medium pressurization system, a cycle processing system, a carbon dioxide separation and recovery system, and an auxiliary medium separation and recovery system. The high-temperature, high-pressure fluid processing area (12-9), the fluid puffing buffer area (12-11), and a quick open valve (12-10) connected thereto effectively implement, on the basis of process requirements, different processing such as puffing, foaming, and crushing with respect to the material, thus expanding the functional diversity and the scope of application of the apparatus. The auxiliary medium pressurization system conveniently launches processing such as separate or step-by-step puffing of a fluid medium mixed at any proportions with respect to the material, implements preprocessing of the material prior to processing, and performs real-time regulation of the medium polarity of a carbon dioxide fluid during processing. Advantages provided are wide applicability and diverse, highly efficient, simple to operate, and ecologically and environmentally friendly processing schemes.

IPC Classes  ?

• B01J 3/04 - Pressure vessels, e.g. autoclaves

Abstract

Disclosed is a supercritical carbon dioxide fluid flash-explosion machine, comprising a high temperature and high pressure fluid flash-explosion system, a carbon dioxide medium pressurization system, a circulating treatment system, and a carbon dioxide separation and recovery system. In the high temperature and high pressure fluid flash-explosion system, a high temperature and high pressure fluid treatment area and a fluid flash-explosion area are arranged, and are in communication via a quick-opening valve, wherein the quick-opening valve can conveniently achieve adjustment to different opening degrees and opening rates as required, which can effectively meet the requirements of different temperatures and pressures during the final treatment state, so as to achieve the flash-explosion processing of materials in different working conditions; and in the high temperature and high pressure fluid treatment area, a magnetic stirring system and an external fluid circulation system are also provided, which greatly improves the treatment uniformity of the materials being treated. The fluid flash-explosion area provided in the present invention can achieve the anhydrous-dry state processing of materials, which shortens the process flow and has remarkable ecological and environmental characteristics, and achieves and improves an efficient flash-explosion treatment for compact and impenetrable materials.

IPC Classes  ?

• D06B 9/02 - Solvent-treatment of textile materials solvent-dyeing
• D06B 9/06 - Solvent-treatment of textile materials with recovery of the solvent

Abstract

2222 fluid medium can be obviously improved.

IPC Classes  ?

• D06M 11/76 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon oxides or carbonates
• D06M 101/06 - Vegetal fibres cellulosic
• D06M 101/10 - Animal fibres
• D06M 101/12 - Keratin fibres or silk

Abstract

Disclosed are a water-based disperse dye which can be used in water- and oil-proofing and the use thereof. A method for preparing the water-based disperse dye comprises the following steps: mixing a crude dye, a surfactant mixture and water, and then grinding same to obtain the water-based disperse dye; or mixing a crude dye, a surfactant mixture, a water-proofing agent and water, and then grinding same to obtain the water-based disperse dye, wherein the surfactant mixture is composed of a cationic surfactant and a nonionic surfactant. In the present invention, by using the compounded cationic surfactant and nonionic surfactant, a nanoscale water-based disperse dye satisfying printing and dyeing processing requirements can be rapidly prepared. Obtaining a dacron article with a good waterproofness when dyeing a dacron fabric is thus achieved, and same has an excellent placement stability. Not only is the process flow shortened, but the production efficiency is also improved and the energy source is saved.

IPC Classes  ?

• C09B 67/40 - Preparations of disperse dyes in liquid form
• C09B 67/04 - Grinding or milling
• D06P 1/16 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
• D06P 1/607 - Nitrogen-containing polyethers
• D06P 1/613 - Polyethers without nitrogen
• D06P 1/647 - Nitrogen-containing carboxylic acids or their salts
• D06P 1/649 - Compounds containing carbonamide, thiocarbonamide or guanyl groups
• D06P 1/66 - Compounds containing ammonium groups containing quaternary ammonium groups
• D06P 3/54 - Polyesters using dispersed dyestuffs

Abstract

Disclosed are a water-based nano disperse dye useful for softening finishing and the use thereof. The water-based nano disperse dye is obtained by mixing a raw dye, a surfactant mixture and water and then grinding same, or by mixing a raw dye, a surfactant mixture, an organosilicon softener and water and then grinding same. The surfactant mixture is composed of a cationic surfactant and an amphoteric surfactant. By using the compounded cationic surfactant and amphoteric surfactant and in combination with the use of the organosilicon softener, a nanoscale water-based nano disperse dye satisfying printing and dyeing processing requirements can be rapidly prepared. Obtaining a polyester article with an excellent softness during the dyeing of a polyester fabric is achieved; in addition, same has an excellent placement stability. Not only is the process flow shortened, but the production efficiency is also improved and the energy source is saved.

IPC Classes  ?

• D06P 1/16 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
• D06P 1/647 - Nitrogen-containing carboxylic acids or their salts
• D06P 1/66 - Compounds containing ammonium groups containing quaternary ammonium groups
• D06P 1/62 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate or sulfonate groups
• D06P 1/52 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
• D06P 3/54 - Polyesters using dispersed dyestuffs
• D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
• C09B 67/40 - Preparations of disperse dyes in liquid form
• D06M 101/32 - Polyesters

Abstract

A flame-retardant ultraviolet-resistant aramid fiber, the preparation method therefor comprising the following steps: adding nanoparticles into a hydrogen peroxide solution, performing magnetic stirring for 0.5-1 h, adding a sulfuric acid solution, and further performing magnetic stirring for 0.5 h; performing filtering to obtain a filter cake, and washing the filter cake with water and drying same to obtain modified particles; modifying the modified particles with curcumin and dopamine to obtain organic substance-modified particles; and finally subjecting the organic substance-modified particles to a reaction with a silicon methoxylated aramid fiber, so as to obtain a surface-modified aramid fiber. The present invention has high ultraviolet absorption and extremely low catalytic activity, avoiding damage to a fiber structure by photocatalysis in a radiation process, and in particular improving flame retardancy of the aramid fiber.

IPC Classes  ?

• D06M 13/328 - Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures
• D06M 13/513 - Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
• D06M 13/52 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment combined with mechanical treatment
• D06M 101/36 - Aromatic polyamides

Abstract

2). By using LF-NMR to detect the distribution of water in the water-based printing ink or wetting agent, the water-based printing ink is quickly detected in real-time and a high-quality water-based printing ink is selected, which contributes to the design and development of water-based printing inks. The state of water in the ink also is adjusted based on the relationship between the distribution state of water in the printing ink and the definition of the printed pattern, thereby ensuring the definition of the printed pattern.

IPC Classes  ?

• G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• C09D 11/38 - Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
• G01N 24/08 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
• G01R 33/44 - Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]

Abstract

A nerve conduit of a magnesium filament and silk compositely woven structure and a preparation method for the nerve conduit.The nerve conduit comprises a porous sponge structure outer layer formed by mixing a silk fibroin solution with a chitosan solution, a three-dimensional structure skeleton middle layer formed by compositely weaving magnesium filament as axial yarn and degummed silk as braiding yarn, and a porous gel structure inner layer. The magnesium filament and silk compositely woven structure can improve radial pressure resistance, slowly degrade to promote the growth and proliferation of schwann cells, facilitate the recovery of damaged nerves, and have good biocompatibility.

IPC Classes  ?

• A61L 27/04 - Metals or alloys
• A61L 27/22 - Polypeptides or derivatives thereof
• A61L 27/26 - Mixtures of macromolecular materials
• A61L 27/38 - Animal cells
• A61L 27/52 - Hydrogels or hydrocolloids
• A61L 27/54 - Biologically active materials, e.g. therapeutic substances
• A61L 27/56 - Porous or cellular materials
• A61L 27/58 - Materials at least partially resorbable by the body
• A61F 2/02 - Prostheses implantable into the body

Abstract

A flame-retardant ultraviolet-resistant aramid fiber, the preparation method therefor comprising the following steps: adding nanoparticles into a hydrogen peroxide solution, performing magnetic stirring for 0.5-1 h, adding a sulfuric acid solution, and further performing magnetic stirring for 0.5 h; performing filtering to obtain a filter cake, and washing the filter cake with water and drying same to obtain modified particles; modifying the modified particles with curcumin and dopamine to obtain organic substance-modified particles; and finally subjecting the organic substance-modified particles to a reaction with a siliconmethoxylated aramid fiber, so as to obtain a surface-modified aramid fiber. The present invention has high ultraviolet absorption and extremely low catalytic activity, avoiding damage to a fiber structure by photocatalysis in a radiation process, and in particular improving flame retardancy of the aramid fiber.

IPC Classes  ?

• D06M 11/00 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising
• D06M 11/45 - Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic TableAluminates
• D06M 11/49 - Oxides or hydroxides of elements of Groups 8, 9,10 or 18 of the Periodic TableFerratesCobaltatesNickelatesRuthenatesOsmatesRhodatesIridatesPalladatesPlatinates
• D06M 11/50 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with persulfuric, permanganic, pernitric, percarbonic acids or their salts
• D06M 11/55 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxideTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfuric acid or thiosulfuric acid or their salts
• D06M 11/58 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
• D06M 11/80 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
• D06M 15/37 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• D06M 15/01 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
• D06M 101/36 - Aromatic polyamides

Abstract

6543136543133 is 100:(5-50). The preparation method for the photocatalytic material is simple and easy to operate; chemical stability of the material is good; ultraviolet-visible light can be effectively absorbed; and efficient photocatalytic activity can be implemented in the visible light.

IPC Classes  ?

• B01J 23/888 - Tungsten
• C02F 1/30 - Treatment of water, waste water, or sewage by irradiation
• C02F 101/30 - Organic compounds

Abstract

The invention relates to a polycarbazole-supported nano-palladium material, a preparation method, and an application thereof. Specifically, the prepared palladium nanoparticles have an average particle size distribution of about 4.2 nm and are uniformly dispersed on the base polycarbazole material, are capable of catalyzing the participation of aryl bromide and aryl chloride in a Suzuki reaction under the conditions of illumination and a water phase, and have high conversion efficiency, a broad scope of application, and mild and environmentally-friendly reaction conditions. After the conversion reaction is complete, a substrate is separated from the reaction system, and the catalytic system can proceed to the next round of reaction. Stability can be maintained even after three cycles, and catalytic activity does not significantly decrease.

IPC Classes  ?

• B01J 23/44 - Palladium
• B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
• B01J 37/16 - Reducing

Abstract

44] (R is tert-butyl) and containing 1,3-di-tert-butyl imidazolium cation is used as a catalyst, di-tert-butyl peroxide is used as an oxidizing agent, and a benzylamine compound is synthesized by oxidation reaction of a toluene/ethylbenzene compound with an aromatic amine. The present invention has a wide application range, and is applicable not only to a toluene compound containing a benzylic primary carbon-hydrogen bond but also to an ethylbenzene compound containing a benzyl secondary carbon-hydrogen bond. This is the first example of the preparation of a benzylamine compound by oxidation reaction of a toluene/ethylbenzene compound and an aromatic amine by an iron-based catalyst.

IPC Classes  ?

• C07C 253/30 - Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
• C07C 255/58 - Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the carbon skeleton
• C07D 333/20 - Radicals substituted by singly bound hetero atoms other than halogen by nitrogen atoms
• C07C 209/60 - Preparation of compounds containing amino groups bound to a carbon skeleton by condensation or addition reactions, e.g. Mannich reaction, addition of ammonia or amines to alkenes or to alkynes or addition of compounds containing an active hydrogen atom to Schiff's bases, quinone imines, or aziranes
• C07C 211/45 - Monoamines
• C07C 213/08 - Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reactions not involving the formation of amino groups, hydroxy groups or etherified or esterified hydroxy groups
• C07C 219/34 - Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having amino groups and esterified hydroxy groups bound to carbon atoms of six-membered aromatic rings of the same carbon skeleton
• C07C 211/52 - Compounds containing amino groups bound to a carbon skeleton having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton having amino groups bound to only one six-membered aromatic ring the carbon skeleton being further substituted by halogen atoms or by nitro or nitroso groups
• B01J 31/22 - Organic complexes

Abstract

A magnetic nanometer material and a preparation method therefor, and an application in radioactive element treatment. Based on magnetic nanometer particles, a series of magnetic composite nanometer particles with magnetic iron oxide nanometer particles as a basis is constructed; while the size, the morphology and the like of the material are selectively regulated, the magnetic composite nanometer particles having a function of specifically binding to target radionuclides are obtained by means of surface modification; the prepared magnetic composite nanometer particles are used for separation and qualitative and quantitative analysis of a sample containing radionuclides; finally, the magnetic composite nanometer particles are used for treatment of radioactive wastewater, and recycle utilization of the magnetic composite nanometer particles is realized by means of a series of treatment processes such as adsorption, separation, and elution.

IPC Classes  ?

• C02F 1/48 - Treatment of water, waste water, or sewage with magnetic or electric fields
• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
• B01J 20/30 - Processes for preparing, regenerating or reactivating

Abstract

The present invention relates to an application of lithium o-methylaniline, and specifically relates to an application of lithium o-methylaniline in catalyzing hydroboration of imine with borane. A catalyst, borane, and imine are sequentially stirred and thoroughly combined, react for 1-2 hours, and are exposed to the air to terminate the reaction. The solvent in the reaction solution is removed under reduced pressure to obtain borates having different substituents. The disclosed lithium o-methylaniline can catalyze the hydroboration of imine with borane with high activity at room temperature. The amount of catalyst used is 4-5 mol% of the moles of imine, and the yield of the reaction can be 90% or more. When compared with existing catalytic systems, the present invention simply uses lithium o-methylaniline, has mild reaction conditions, and the yield of the borates having different substituents can reach 99% under optimized conditions.

IPC Classes  ?

• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• C07F 5/02 - Boron compounds
• C07F 5/04 - Esters of boric acids

Abstract

The present invention relates to the application of lithium 4-methoxyaniline, and in particular to the application of lithium 4-methoxyaniline in catalysis of the hydroboration reaction of an imine and a borane. A catalyst, a borane and an imine are successively stirred and mixed until uniform, reacted for 1 to 2 hours, and then exposed to air so as to stop the reaction, and the reaction liquid is subjected to decompression to remove a solvent therein, so as to obtain a borate with different substituents. The lithium 4-methoxyaniline disclosed in the present invention can catalyze the hydroboration reaction of an imine and a borane in a high activity manner at room temperature, wherein the amount of the catalyst is merely 4-5 mol% of the molar amount of the imine, and the yield of the reaction can reach 90% or more. The yield of a borate with different substituents can reach 99% with mild reaction conditions under an optimized condition by using simple lithium 4-methoxyaniline, compared to an existing catalyst system.

IPC Classes  ?

• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• C07F 5/04 - Esters of boric acids

Abstract

Provided is an application of o-methoxyaniline lithium, specifically relating to an application of o-methoxyaniline lithium for catalysing the boron hydrogenation reaction of imine and borane. Sequentially stirring and evenly mixing a catalyst, borine, and imine, reacting for 1-2 hours, terminating the reaction by exposure to air, and removing the solvent from the reaction solution under reduced pressure to obtain boric acid esters with different substituents. The o-methoxyaniline lithium can catalyse the boron hydrogenation reaction of imine and borane with high activity under room temperature conditions; the amount of catalyst is only 4-5 mol% of the molar amount of imine, and the reaction can reach a yield of more than 90%; compared to existing catalytic systems, using simple o-methoxyaniline lithium has mild reaction conditions and the yield of boric acid esters with different substituents can reach 99% under optimal conditions.

IPC Classes  ?

• C07F 5/02 - Boron compounds
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

Disclosed are a benzophospho naphthalene derivative, and a preparation method therefor. The method comprises the following steps: dissolving an alkyne, a phosphorus reagent, a copper catalyst and an organic peroxide in a solvent, and reacting same at 50ºC-100ºC to obtain a benzophospho naphthalene derivative, wherein the alkyne can be an alkyl alkyne, an aryl alkyne, a five-membered heteroaryl alkyne, or a six-membered heteroaryl alkyne. The method disclosed in the present invention has mild reaction conditions, a short reaction time, a high target product yield, and a simple reaction operation and post-treatment process.

IPC Classes  ?

• C07F 9/6568 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus atoms as the only ring hetero atoms

Abstract

18-x-yxy4747, x and y being respectively the molar weight of Ta doped and substituted with niobium Nb5+ions and Ta doped and substituted with vanadium V5+ions, x being 0.1-5.4, and y being 0.1-2, raw materials containing Ti4+, Nb5+, Ta5+and V5+ions are weighed and taken; an appropriate amount of a compound containing Li+ ions is weighed and taken as a sintering aid; and a stepwise sintering process is adopted, so as to obtain a pure-phase niobium and vanadium-doped titanium tantalate-based photocatalyst. The titanium tantalate photocatalyst obtained by doping with niobium Nb and vanadium V enhances the absorption in the visible light range; in addition, lattice disturbance greatly improves the separation efficiency of photoinduced charges, and enhances the photocatalytic ability. The photocatalyst has a simple preparation process, low costs and good photocatalytic material stability, and is able to degrade organic pollutants under the irradiation of ultraviolet light and near ultraviolet light, and particularly, is able to degrade organic pollutants in water, facilitating environmental protection.

IPC Classes  ?

• B01J 23/20 - Vanadium, niobium or tantalum
• B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
• C02F 1/32 - Treatment of water, waste water, or sewage by irradiation with ultraviolet light
• C02F 101/30 - Organic compounds

Abstract

The present invention relates to applications of a lithium anilide and specifically relates to applications of lithium anilide in catalyzing a hydroboration reaction of imine and borane. A catalyst, borane, and imine are sequentially stirred and mixed evenly, reacted for 1-2 hours, and exposed in air to terminate the reaction; the reaction solution is depressurized to remove a solvent, thus producing borates having different substituents. The lithium anilide disclosed provides high activity in catalyzing the hydroboration reaction of imine and borane at room temperature, the amount of catalyst used is 4-5 mol% of the molar volume of imine, the yield of the reaction is 90% or more, compared with the prior catalyst system, a simple lithium anilide is utilized, reaction conditions are moderate, and the yield of the borates having different substituents under optimized conditions is 99%.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

The present invention relates to an application of lithium 2,6-dimethylaniline, and specifically relates to an application of lithium 2,6-dimethylaniline in catalyzing hydroboration of imine with borane. A catalyst, borane, and imine are sequentially stirred and thoroughly combined, react for 1-2 hours, and are exposed to the air to terminate the reaction. The solvent in the reaction solution is removed under reduced pressure to obtain borates having different substituents. The disclosed lithium 2,6-dimethylaniline can catalyze the hydroboration of imine with borane with high activity at room temperature. The amount of catalyst used is 4-5 mol% of the moles of imine, and the yield of the reaction can be 90% or more. When compared with existing catalytic systems, the present invention simply uses lithium 2,6-dimethylaniline, has mild reaction conditions, and the yield of the borates having different substituents can reach 99% under optimized conditions.

IPC Classes  ?

• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• C07F 5/02 - Boron compounds

Abstract

The present invention relates to an application of lithium 2,6-diisopropylaniline, and specifically relates to an application of lithium 2,6-diisopropylaniline in catalyzing hydroboration of imine with borane. A catalyst, borane, and imine are sequentially stirred and thoroughly combined, react for 1-2 hours, and are exposed to the air to terminate the reaction. The solvent in the reaction solution is removed under reduced pressure to obtain borates having different substituents. The disclosed lithium 2,6-diisopropylaniline can catalyze the hydroboration of imine with borane with high activity at room temperature. The amount of catalyst used is 4-5 mol% of the moles of imine, and the yield of the reaction can be 90% or more. When compared with existing catalytic systems, the present invention simply uses lithium 2,6-diisopropylaniline, has mild reaction conditions, and the yield of the borates having different substituents can reach 99% under optimized conditions.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

The present invention relates to an application of 4-MePhNHLi, in particular, to an application of 4-MePhNHLi in catalyzing hydroboration reaction of imine and borane. A catalyst, borane, and imine are stirred and mixed uniformly in sequence for reaction for 1-2 hours, the reaction is terminated by exposure to air, and the solvent in the reaction liquid is removed under reduced pressure to obtain borate esters having different substituents. According to the present invention, 4-MePhNHLi can catalyze hydroboration reaction of imine and borane at high activity at room temperature, the amount of catalyst is only 4-5 mol% of the molar mass of imine, and the reaction can reach a yield of more than 90%; compared with an existing catalytic system, simple 4-MePhNHLi is used, the reaction conditions are mild, and the yield of borate esters having different substituents can reach 99% in optimized conditions.

IPC Classes  ?

• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
• C07F 5/04 - Esters of boric acids

Abstract

The invention discloses a phosphindole derivative, a benzophosphindole derivative and a preparation method therefor. The method comprises the steps as follows: dissolving alkyne, a phosphorus reagent, a copper catalyst and an organic peroxide into a solvent for reaction at 50-100℃ to obtain a phosphindole derivative; the phosphindole derivative can react with 2,5-dimethoxy tetrahydrofuran and further derive to obtain a benzophosphindole derivative; and the alkyne may be alkyl alkyne, aryl alkyne, five-member heteroaryl alkyne and six-member heteroaryl alkyne. The method disclosed by the invention has mild reaction conditions, short reaction time, high yield of target products, as well as simple reaction operation and post-processing procedure.

IPC Classes  ?

• C07F 9/547 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom

Abstract

Disclosed is a method for preparing a 1,3-dicarbonyl compound based on a metal hydride/palladium compound system. The method comprises the following steps: suspending a palladium compound and a metal hydride in a solvent under the protection of nitrogen, then adding an electron-deficient olefin compound, reacting same at 0ºC-100ºC for 0.3 to 10 hours, then adding a saturated ammonium chloride aqueous solution to stop the reaction, and then subjecting same to extraction, evaporation until dryness, and column chromatography purification to obtain a product, i.e., the 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used by the present invention are reagents easily obtained in a laboratory. Compared to a common hydrogen hydrogenation method, the method is easier to operate, and has a higher safety, mild conditions, and a high reaction yield.

IPC Classes  ?

• C07C 67/313 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of doubly bound oxygen containing functional groups, e.g. carboxyl groups
• C07C 231/12 - Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
• C07C 45/62 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by hydrogenation of carbon-to-carbon double or triple bonds
• C07C 69/757 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
• C07C 235/82 - Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton with the carbon atom of at least one of the carboxamide groups bound to a carbon atom of a ring other than a six-membered aromatic ring
• C07C 49/633 - Unsaturated compounds containing a keto group being part of a ring polycyclic a keto group being part of a condensed ring system having two rings the condensed ring system containing eight or nine carbon atoms

Abstract

Provided is an application of a metal hydride/palladium compound system in the preparation of a 1,3-dicarbonyl compound in a cascade reaction of an electron-deficient alkene compound, said reaction comprising the following steps: under the protection of nitrogen, a palladium compound and a metal hydride are suspended and stirred in a solvent, then an electron-deficient alkene compound is added; the mixture reacts at 0℃ to 100℃ for 0.3 to 10 hours; a saturated ammonium chloride aqueous solution is added to stop the reaction, and then extraction, drying by evaporation and purification by column chromatography are performed to obtain the product of 1,3-dicarbonyl compound. The hydride and palladium compound catalysts used in the method are reagents easily obtained in a laboratory; compared with the commonly used methods of hydrogenation with hydrogen gas, the method can be easily operated, and has high safety, mild conditions and high reaction yield.

IPC Classes  ?

• C07C 67/333 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisationPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by change of size of the carbon skeleton
• C07C 69/757 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
• C07C 235/82 - Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups and doubly-bound oxygen atoms bound to the same carbon skeleton with the carbon atom of at least one of the carboxamide groups bound to a carbon atom of a ring other than a six-membered aromatic ring
• C07C 45/67 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by isomerisationPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by change of size of the carbon skeleton
• C07C 49/67 - Unsaturated compounds containing a keto group being part of a ring containing six-membered aromatic rings a keto group being part of a condensed ring system having two rings, e.g. tetralones
• C07C 49/798 - Ketones containing a keto group bound to a six-membered aromatic ring having unsaturation outside an aromatic ring containing rings other than six-membered aromatic rings
• B01J 31/30 - Halides
• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• B01J 31/22 - Organic complexes
• B01J 31/28 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of the platinum group metals, iron group metals or copper

Abstract

Disclosed are a reduction method and reduction product of an alkenyl active methylene compound. The reduction reaction comprises the following steps: taking an alkenyl active methylene compound as a substrate, a metal hydride as a reducing agent, and a palladium compound as a catalyst, performing a reduction reaction to obtain a reduction product, and then reducing the alkenyl active methylene compound. The reduction system is a simple method for reducing the alkenyl active methylene compound, and the used hydride and palladium compound catalyst are both reagents that could easily be obtained in a laboratory. Compared with conventional hydrogen hydrogenation methods and reduction methods of reducing agents, the method is easier to operate, higher in safety, mild in conditions, and high in reaction yield, a reaction in a one-pot two-step manner can be achieved, and high atom economy and step economy can be obtained.

IPC Classes  ?

• C07C 67/303 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by hydrogenation of unsaturated carbon-to-carbon bonds
• C07C 69/738 - Esters of keto-carboxylic acids
• C07C 23/12 - Hexachlorocyclohexanes
• B01J 31/30 - Halides
• B01J 31/28 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of the platinum group metals, iron group metals or copper

Abstract

Provided is a 3,3-disubstituted oxindole and a preparation method thereof, wherein the reaction comprises the steps of: performing a reduction reaction by using an active alkenyl methylene compound as a substrate, a metal hydride as a reducing agent, and a palladium compound as a catalyst to give a reduction product; reacting the reduction product with an electrophilic reagent to give the 3,3-disubstituted oxindole. The method is a simple process for reducing an active alkenyl methylene compound, the used hydride and palladium compound catalyst are reagents easy to obtain in a laboratory, and compared with the common hydrogen hydrogenation process and reducing agent reduction process, the method is more easy to operate, has a high safety with mild conditions and high reaction yield, and may be performed in one-pot two-step reaction, and has very high atom economy and step economy.

IPC Classes  ?

• C07D 209/34 - Oxygen atoms in position 2
• C07D 209/38 - Oxygen atoms in positions 2 and 3, e.g. isatin
• B01J 31/30 - Halides

Abstract

Disclosed are the use of a metal hydride/palladium compound catalytic reduction system in the reduction of an alkenyl active methylene compound and a reduction method. The reaction comprises the following steps of subjecting the alkenyl active methylene compound as a substrate to a reduction reaction with a metal hydride as a reducing agent and a palladium compound as a catalyst so as to obtain a reduction product, thereby completing the reduction of the alkenyl active methylene compound. The reduction system is a simple method for reducing an alkenyl active methylene compound, and the hydride and palladium compound catalyst used are both reagents that are easily available in laboratories. Compared with commonly used hydrogen hydrogenation methods and reducing agent-based reduction methods, this method is easier to operate, and has a higher safety, mild conditions and a high reaction yield; furthermore, the reaction can be carried out in one pot over two steps, and same has high atomic economy and step economy.

IPC Classes  ?

• C07D 209/34 - Oxygen atoms in position 2
• C07D 401/06 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
• B01J 31/30 - Halides
• B01J 31/22 - Organic complexes
• B01J 31/04 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• B01J 31/28 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of the platinum group metals, iron group metals or copper
• B01J 31/24 - Phosphines

Abstract

The invention provides a silk fibroin-based anti-counterfeiting mark comprising a silk fibroin film layer and a gold film layer located on the silk fibroin film layer, and the area of the gold film layer is less than that of the silk fibroin film layer. The inventive also provides a method for preparing the silk fibroin-based optical anti-counterfeiting mark, the method comprises preparing an aqueous silk fibroin solution, coating the aqueous silk fibroin solution onto a substrate to obtain a silk fibroin film, and sputtering a layer of gold film on the silk fibroin film with a mask to obtain the silk fibroin-based optical anti-counterfeiting mark. In the invention a thin layer of Au film is sputtered on a silk fibroin film such that an anti-counterfeiting mark pattern appears at a high humidity, the method is simple and can significantly the production cost of optical anti-counterfeiting mark.

IPC Classes  ?

• B42D 25/36 - Identification or security features, e.g. for preventing forgery comprising special materials
• C09D 189/00 - Coating compositions based on proteinsCoating compositions based on derivatives thereof
• C23C 14/14 - Metallic material, boron or silicon
• B42D 25/373 - Metallic materials
• C23C 14/20 - Metallic material, boron or silicon on organic substrates
• C23C 14/04 - Coating on selected surface areas, e.g. using masks
• C08L 89/00 - Compositions of proteinsCompositions of derivatives thereof
• B41M 3/14 - Security printing

Abstract

37.5232337.537.57.5 catalyst, the heterojunction photocatalytic material prepared by compounding bismuth tellurate/bismuth oxide can better absorb the visible light and generate a large number of electron-hole pairs, and effectively realizes electron-hole separation, thereby improving the catalytic efficiency.

IPC Classes  ?

• B01J 23/18 - Arsenic, antimony or bismuth
• B01J 27/057 - Selenium or telluriumCompounds thereof
• B01J 37/03 - PrecipitationCo-precipitation
• C02F 1/30 - Treatment of water, waste water, or sewage by irradiation
• C02F 101/30 - Organic compounds

Abstract

The present invention discloses a photocatalyst-supported micro-nano composite fiber material and a preparation method therefor. Polyacrylonitrile microfibers are prepared by means of a wet spinning process, a layer of a conductive polymer polyaniline is grown by means of in situ polymerization on the surface of the polyacrylonitrile microfibers, and by covering the surface thereof with a layer of polyacrylonitrile nanofibers containing a photocatalyst precursor by means of an electrospinning process, a micro-nano composite fiber material with a photocatalytic ability in response to visible light is formed. The photocatalyst-supported micro-nano composite fiber material provided by the present invention has the advantages of a large specific surface area, strong adsorption of pollutants, the ability to degrade pollutants under visible light, etc. In addition, the photocatalyst composite fibers provided by the present invention solve the problems of powder photocatalysts being difficult to recover, and flexible photocatalyst supports having a poor strength and non-weavability, etc., thereby broadening the application field of the material.

IPC Classes  ?

• B01J 35/06 - Fabrics or filaments
• D01F 11/08 - Chemical after-treatment of man-made filaments or the like during manufacture of synthetic polymers of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• D01F 1/10 - Other agents for modifying properties
• D01D 5/00 - Formation of filaments, threads, or the like
• B01J 31/38 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of titanium, zirconium or hafnium

Abstract

2232232233 heterojunction powder is prepared by means of a hydrothermal method. The preparation method is simple, feasible and short in synthetic period and the prepared material is uniform in particle size distribution, high in purity and good in chemical stability. The product is used as a photocatalyst, can broaden a spectral response range by means of the heterostructure, reduces the recombination rate of photoproduced electrons and holes, shows good light absorption capability in a visible light zone, can effectively degrade organic pollutants, and has a broad application prospect.

IPC Classes  ?

• B01J 23/18 - Arsenic, antimony or bismuth
• B01J 35/02 - Solids
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• C02F 1/30 - Treatment of water, waste water, or sewage by irradiation
• C02F 101/30 - Organic compounds

Abstract

An instrument detection method for an odorous substance in a mulberry silk floss product. The method comprises finding an odor source chromatographic peak of the mulberry silk floss product by using SPME-GC/MS, revealing a corresponding relationship between the odor source chromatographic peak and a specific chemical substance, and giving a detection scheme. The present invention has the advantages such as accurate quantification, good repeatability, high recovery rate of odorous substances, easy operations, reduced labor intensity of personnel, and low dependence on subjective determination of professionals.

IPC Classes  ?

• G01N 30/02 - Column chromatography
• G01N 30/06 - Preparation

Abstract

399] 3+433] 3–33 CN is used as a catalyst, and methyl thiophenol is used as an accelerator for a catalytic reaction of a chalcone compound so as to prepare a product; and Ln, contained in the catalyst, represents a positive trivalent rare earth metal ion and is selected from one of La, Nd, Sm, Gd and Yb. According to the method, the raw materials are easy to obtain, the reaction process is simple, the catalyst dosage is low, the catalyst is universally applicable to various substituted 2-hydroxy chalcones, and the obtained cyclopentadienyl [c] chromium compound is unreported. The catalyst synthesis method is simple and easy to obtain, the target product shows a high yield.

IPC Classes  ?

• C07D 311/94 - Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems condensed with rings other than six-membered or with ring systems containing such rings
• B01J 23/10 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of rare earths
• B01J 31/22 - Organic complexes

Abstract

Disclosed are a surgical suture with a natural antibacterial drug sustained release function and a preparation method therefor. The antibacterial surgical suture with a long-lasting antibacterial performance is prepared by adopting a composite structure knitting technology and using silk fibroin as a coating carrier to carry a natural antibacterial drug. The material of the surgical suture has good mechanical properties and a long-lasting drug sustained release effect, and is capable of inhibiting or killing bacteria and reducing surgical site infection.

IPC Classes  ?

• A61L 17/12 - Homopolymers or copolymers of glycolic or lactic acid
• A61L 17/14 - Post-treatment to improve physical properties

Abstract

4.0k4.0k4.0k4.0k4.0k4.0k-g-PEG), the obtained cyclic comb shaped polymer still remaining the characteristic of a narrow molecular weight distribution.

IPC Classes  ?

• C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds

Abstract

Disclosed is an air-jet texturing combined device for preparing super cotton-like air-jet textured polyester-nylon combined filament yarns. The air-jet texturing combined device comprises a nozzle core and a nozzle housing, wherein a circular hole is provided inside the nozzle housing, an outer wall of the nozzle core is cylindrical, and an air-jet nozzle annular cavity is formed by an annular gap between the nozzle core and the nozzle housing; a compressed air inlet is provided in the nozzle housing; a nozzle core hole is provided in the middle of the nozzle core, a lower end of the nozzle core hole being in a splayed convergent shape, a middle section of the nozzle core hole being cylindrical to form an air-jet nozzle turbulence chamber, and an upper end of the nozzle core hole being a horn-shaped opening; and an air-jet airflow jet micropore is provided in a wall of the nozzle core. By means of the combined device, a bundle of yarns entering the air-jet nozzle turbulence chamber is blown by a formed supersonic multi-dimensional vortex air-jet turbulent airflow to be separated and violently moves and rotates in the multi-dimensional vortex air-jet turbulent airflow, and is then continuously discharged from a vortex turbulence region with the vortex jet airflow so that irregularly wound interlaced combined filament yarns are formed, and the super cotton-like air-jet textured polyester-nylon combined filament yarn is prepared.

IPC Classes  ?

• D02G 1/16 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
• D02G 3/04 - Blended or other yarns or threads containing components made from different materials

Abstract

Disclosed are a cellulose diacetate fiber thin film and a preparation method therefor. Cellulose diacetate powder is dissolved in acetone/water or a mixed solvent of acetone/dichloromethane to prepare a spinning solution, and the cellulose diacetate spinning solution is drawn into fibers under the action of an electrostatic high-voltage electric field force in an electrostatic spinning process, and solidified on a receiver to form a fiber film. The technical solution provided by the present invention is simple to operate and the conditions are easy to control. The prepared cellulose diacetate fiber thin film has fine fibers with a micron-order diameter. The fibers have a porous structure on the surface thereof and a flat cross section. The fiber film has a large specific surface area and excellent adsorption properties, and has good application prospects in the fields of biological dressings, slow release of drugs, tissue scaffolds, etc.

IPC Classes  ?

• D04H 1/4258 - Regenerated cellulose series
• D04H 1/728 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
• D01D 5/00 - Formation of filaments, threads, or the like
• D01D 5/247 - Discontinuous hollow structure or microporous structure

Abstract

Disclosed are a fluorescent powder activated by mixing europium ions of Eu2+and Eu3+2-2x2x2410x2241010; and the activator is europium ions, which are a mixture of Eu2+and Eu3+. The fluorescent powder provided by the present invention is prepared by using a chemical sol-gel method for synthesis, with sintering being carried out in an air atmosphere. Under the excitation of ultraviolet light and near-ultraviolet light, fluorescent powder can result in different luminescent colors, from blue light to white light. The preparation process of the present invention is simple, and especially has no strict requirements with respect to the sealing property of the preparation equipment, good production safety, low cost, and no pollution discharge. The resulting fluorescent powder is polychromatic and luminescent and the color can be continuously adjusted.

IPC Classes  ?

• C09K 11/64 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing aluminium
• C09K 11/80 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals containing aluminium or gallium

Abstract

A preparation method for a fluorine-containing polycaprolactone film, comprising: reacting polycaprolactone with alkamine to prepare hydroxyl-terminated polycaprolactone; reacting the hydroxyl-terminated polycaprolactone with anhydride to prepare carboxyl-terminated polycaprolactone; reacting glycol bromoisobutyrate with fluorine-containing alkyl acrylate to prepare hydroxyl-terminated fluorine-containing polyacrylate; reacting the carboxyl-terminated polycaprolactone with the hydroxyl-terminated fluorine-containing polyacrylate to prepare fluorine-containing polycaprolactone; and preparing the fluorine-containing polycaprolactone into an organic solution, and drying to form a film at room temperature.

IPC Classes  ?

• C08J 5/18 - Manufacture of films or sheets
• C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08F 120/24 - Esters containing halogen containing perhaloalkyl radicals
• C08L 87/00 - Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds

Abstract

The present invention relates to a surface-modified aramid fiber and a preparation method therefor; said method comprises the following steps: modifying an aramid fiber having amino groups and carboxyl groups on the surface with siloxane γ-glycidoxypropyltrimethoxysilane, so as to obtain a silicon methoxylated aramid fiber; reacting same with a polydopamine modified, turbostratic boron nitride coated cerium oxide, so as to obtain a surface-modified aramid fiber. The polydopamine modified, turbostratic boron nitride coated cerium oxide has high ultraviolet absorption, and has extremely low catalytic activity, avoiding the damage to a fiber structure by photocatalysis during radiation, being an effective, safe and highly-efficient ultraviolet absorber. The surface-modified aramid fiber provided in the present invention has an ultraviolet-resistant function, high surface activity, good thermal performance, and better mechanical performance, providing excellent overall performance, and having higher utilization value. The preparation method provided is simple and controllable, being suitable for scale production.

IPC Classes  ?

• D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
• D06M 11/45 - Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic TableAluminates
• D06M 11/80 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
• D06M 15/61 - Polyamines
• C01B 13/14 - Methods for preparing oxides or hydroxides in general
• C01B 21/064 - Binary compounds of nitrogen with metals, with silicon, or with boron with boron
• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• D06M 101/36 - Aromatic polyamides

Abstract

nnnn-butyllithium has high catalytic activity in the hydroboration of the carbonyl compound and borane with mild reaction conditions and a short reaction time, thereby reducing environmental pollution. The catalyst is effective for aromatic aldehydes (ketones) having different substitution positions and different electronic effects and for heterocyclic aldehydes (ketones), and is widely applicable to fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• B01J 31/12 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
• C07F 5/04 - Esters of boric acids

Abstract

Disclosed by the present invention are a water-soluble inlaid thorium fullerene, a preparation method therefor and an application thereof. Specifically, the method comprises: first evacuating a reaction chamber that is equipped with electrodes to form a vacuum, then filling a He atmosphere having a pressure of 2.5-3.5×1042828282 with a hydrophilic group, while the amino group on the surface is further facilitated in coupling with other biologically active molecules so as to improve targeting performance and achieve the effect of targeted diagnosis and treatment, thus providing a wide space of selection for subsequent development.

IPC Classes  ?

• C01B 32/154 - Preparation
• A61K 49/04 - X-ray contrast preparations

Abstract

Disclosed is an application of anilino lithium in catalyzing hydroboration of a carbonyl compound and borane. In an anhydrous oxygen-free environment, borane is added in an inert gas atmosphere to a reaction flask having been subjected to dehydration and deoxidation treatment, then a catalyst anilino lithium is added and uniformly mixed, a carbonyl compound is further added to carry out hydroboration, and the reaction is terminated by exposure to air to obtain a borate. The present invention has found for the first time that anilino lithium is extremely efficient in catalyzing the hydroboration of carbonyl compounds, and thus provides a novel solution for the preparation of borates by hydroboration of carbonyl compounds with borane. The anilino lithium has high catalytic activity in the hydroboration of the carbonyl compound and borane with mild reaction conditions, a short reaction time, and a high reaction yield. The reaction is simple and controllable, involves simple post-treatment, and employs a solvent-free system, thereby reducing environmental pollution. The disclosed catalyst is widely applicable to aromatic aldehydes (ketones) having different substitution positions and different electronic effects, and to heterocyclic aldehydes (ketones) and fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

ooooo-methylanilino lithium has high catalytic activity in the hydroboration of the carbonyl compound and borane with mild reaction conditions, a short reaction time, and a high reaction yield. The reaction is simple and controllable, involves simple post-treatment, and employs a solvent-free system, thereby reducing environmental pollution. The disclosed catalyst is widely applicable to aromatic aldehydes (ketones) having different substitution positions and different electronic effects and to heterocyclic aldehydes (ketones) and fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

ppppp-methylanilino lithium has high catalytic activity in the hydroboration of the carbonyl compound and borane with mild reaction conditions, a short reaction time, and a high reaction yield. The reaction is simple and controllable, involves simple post-treatment, and employs a solvent-free system, thereby reducing environmental pollution. The disclosed catalyst is widely applicable to aromatic aldehydes (ketones) having different substitution positions and different electronic effects and to heterocyclic aldehydes (ketones) and fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

Disclosed is an application of 2,6-dimethylanilino lithium in catalyzing hydroboration of a carbonyl compound and borane. In an anhydrous oxygen-free environment, borane is added in an inert gas atmosphere to a reaction flask having been subjected to dehydration and deoxidation treatment, then a catalyst 2,6-dimethylanilino lithium is added and uniformly mixed, a carbonyl compound is further added to carry out hydroboration, and the reaction is terminated by exposure to air to obtain a borate. The present invention has found for the first time that 2,6-dimethylanilino lithium is extremely efficient in catalyzing the hydroboration of carbonyl compounds, and thus provides a novel solution for the preparation of borates by hydroboration of carbonyl compounds with borane. The 2,6-dimethylanilino lithium has high catalytic activity for the hydroboration of the carbonyl compound and borane with mild reaction conditions, a short reaction time, and a high reaction yield. The reaction is simple and controllable, involves simple post-treatment, and employs a solvent-free system, thereby reducing environmental pollution. The disclosed catalyst is widely applicable to aromatic aldehydes (ketones) having different substitution positions and different electronic effects and to heterocyclic aldehydes (ketones) and fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

Disclosed is an application of 2,6-diisopropylanilino lithium in catalyzing hydroboration of a carbonyl compound and borane. In an anhydrous oxygen-free environment, borane is added in an inert gas atmosphere to a reaction flask having been subjected to dehydration and deoxidation treatment, then a catalyst 2,6-diisopropylanilino lithium is added and uniformly mixed, a carbonyl compound is further added to carry out hydroboration, and the reaction is terminated by exposure to air to obtain a borate. The present invention has found for the first time that 2,6-diisopropylanilino lithium can be extremely efficient in catalyzing the hydroboration of carbonyl compounds, and thus provides a novel solution for the preparation of borates by hydroboration of carbonyl compounds with borane. The 2,6-diisopropylanilino lithium has high catalytic activity in the hydroboration of the carbonyl compound and borane with mild reaction conditions, a short reaction time, and a high reaction yield. The reaction is simple and controllable, involves simple post-treatment, and employs a solvent-free system, thereby reducing environmental pollution. The disclosed catalyst is widely applicable to aromatic aldehydes (ketones) having different substitution positions and different electronic effects and to heterocyclic aldehydes (ketones) and fatty aldehydes (ketones), thereby providing more choices for obtaining borate compounds with different substituent structures.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/02 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides

Abstract

The present invention relates to a chiral main-chain-type azobenzene polymer aggregate and a preparation method therefor, which method is specifically operated as follows: respectively taking equal amounts of 1×10-5M of a trichloromethane solution of chiral polysilane and of an azobenzene polymer using a pipette and adding same into a cuvette containing a stirrer; then adding a certain amount of a good solvent, trichloromethane, and stirring same for 2 minutes, and then moving the cuvette to a table; then adding a certain amount of a poor solvent, methanol, along a wall; and gently inverting same 8 times and then leaving same to stand for 2 minutes to obtain the chiral main-chain-type azobenzene polymer aggregate. The present invention provides a new method for preparing the chiral azobenzene polymer aggregate. After a suitable good solvent and poor solvent are found, isomeric aggregates of the main-chain-type azobenzene polymer are successfully prepared by adjusting and controlling the volume ratio of the good solvent and the poor solvent. The chiral polysilane is then selectively and completely decomposed by using ultraviolet light so as to obtain an azobenzene polymer aggregate with a single chirality.

IPC Classes  ?

• C08F 8/00 - Chemical modification by after-treatment

Abstract

The invention discloses a high-temperature resistant polyester composite material and a preparation method thereof. Using fluorine-containing phenyl silicone resin and silicone rubber (107 silicone rubber) as raw material, an organosilicon coating agent is prepared by a polycondensation reaction. A mixture of the organosilicon coating agent, an oxidant and a diluent is coated on a polyester substrate, and is then dried and cured to obtain the high-temperature resistant polyester composite material. Since a certain quantity of a fluorine-containing phenyl group is introduced into the structure of the product, the obtained product has excellent high-temperature resistance and adhesive performance, and has the advantages of a simple preparation process, low equipment requirements, and suitability for mass production.

IPC Classes  ?

• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences
• C08J 7/04 - Coating
• C09D 183/10 - Block or graft copolymers containing polysiloxane sequences
• C08G 77/44 - Block- or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences
• C08G 77/24 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen halogen-containing groups
• C08G 77/08 - Preparatory processes characterised by the catalysts used
• C08G 77/06 - Preparatory processes
• C08L 67/00 - Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chainCompositions of derivatives of such polymers

Abstract

Provided is a fluorosilicone resin and a preparation method thereof. Using pentafluorostyrene as raw material, pentafluorophenethyldimethylchlorosilane is prepared by a hydrosilylation reaction. By means of a polycondensation reaction of the pentafluorophenethyldimethylchlorosilane, trimethylchlorosilane and tetraethyl orthosilicate, a pentafluorophenyl silicone resin is prepared. The preparation method adopts a two-step polycondensation process, which overcomes the disadvantages of a large difference in hydrolysis reactivity between pentafluorophenyldimethylchlorosilane and a copolymerized trialkyl-chlorosilane, and achieves a high yield. The obtained pentafluorophenyl silicone resin has the advantages of superior heat resistance, simple preparation process, low equipment requirements, high availability of raw material, and suitability for mass production. The heat-resistant fluorosilicone resin can be applied in a polymer material, such as a heat-resistant adhesive.

IPC Classes  ?

• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences
• C08G 77/24 - Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen halogen-containing groups
• C08G 77/20 - Polysiloxanes containing silicon bound to unsaturated aliphatic groups
• C08G 77/06 - Preparatory processes

Abstract

The invention discloses a high-temperature resistant and pressure-sensitive adhesive precursor and a preparation method thereof. Using fluorine-containing phenyl silicone resin and silicone rubber (107 silicone rubber) as raw material, the high-temperature resistant and pressure-sensitive adhesive precursor is prepared by a polycondensation reaction. Since a certain quantity of a fluorine-containing phenyl group is introduced into the structure of the product, the obtained pressure-sensitive adhesive precursor has excellent high-temperature resistance and adhesive properties, and has the advantages of a simple preparation process, low equipment requirements, and suitability for mass production.

IPC Classes  ?

• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

The invention discloses a pressure-sensitive organosilicon adhesive and a preparation method thereof. Using fluorine-containing phenyl silicone resin and silicone rubber (107 silicone rubber) as raw material, the pressure-sensitive organosilicon adhesive is prepared by a polycondensation reaction. Since a certain quantity of a fluorine-containing phenyl group is introduced into the structure of the product, the obtained pressure-sensitive organosilicon adhesive has excellent high-temperature resistance and adhesive properties, and has the advantages of a simple preparation process, low equipment requirements, and suitability for mass production.

IPC Classes  ?

• C09J 183/10 - Block or graft copolymers containing polysiloxane sequences

Abstract

Provided is a method for preparing a 2-aminoindole derivative comprising the following steps: carrying out a reaction of a pyridine formylindole derivative, a dimethylethyl nitrite, and a copper catalyst dissolved in a solution; and then adding a reduction system to obtain the 2-aminoindole derivative.

IPC Classes  ?

• C07D 401/06 - Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
• B01J 27/122 - Halides of copper
• B01J 31/04 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts

Abstract

Disclosed is a method for preparing 2-nitroindole derivatives. The invention adopts pyridine formyl indole as a starting material, a raw material that is easily available and widely distributed. The product obtained by the method of the invention has various types and has wide application. The product can be used both directly and for drug synthesis. The method disclosed has simple steps, mild reaction conditions, high yield of the target product, is low polluting, has a simple reaction operation and post-treatment process, and is suitable for industrial production.

IPC Classes  ?

• C07D 209/30 - IndolesHydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
• C07D 209/36 - Oxygen atoms in position 3, e.g. adrenochrome
• C07D 209/42 - Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals

Abstract

Disclosed is a method for preparing a thiazoloquinazolinone derivative. The invention adopts a 1-thiazolyl indole compound as a starting material that reacts in air to prepare the product. The raw material is easily available and widely distributed. The product obtained by the method of the invention has different types and wide application. The product can be used both directly and for synthesis of thiazoloquinazolinone derivatives having pharmaceutical activity, such as bactericides, herbicides, and insecticides. The method disclosed in the present invention has simple steps, mild reaction conditions, a high yield of the target product, is low polluting, has simple reaction operations and a simple post-treatment process, and is suitable for industrial production.

IPC Classes  ?

• C07D 513/04 - Ortho-condensed systems

Abstract

Disclosed is an antibacterial anti-ultraviolet multifunctional chemical fiber: dissolving a soluble metal salt and a high-molecular complexing dispersant into water to prepare an aqueous solution; adding into a polymer monomer; reacting under microwave or hydrothermal action to obtain a polymer monomer containing a multifunctional nano oxide; adding the polymer monomer with a polymer, a catalyst, an initiator, a stabilizer, and the like into a polymerization reaction kettle; and carrying out esterification, polycondensation, or copolymerization to obtain a polymer melt, and carrying out spinning or strip casting and granule cutting to obtain an antibacterial anti-ultraviolet multifunctional chemical fiber yarn or master batch slice. According to the present invention, by generating nano metal oxide in the monomer in situ before the polymerization reaction, small particle sizes and dispersibility of the nano metal oxide are ensured while subsequent spinning and weaving are not influenced; the provided antibacterial anti-ultraviolet multifunctional chemical fiber has efficient and durable antibacterial anti-ultraviolet functions and is free of metal ion precipitation, effectively overcomes the problems in the prior art of precipitation discoloration caused by using silver ions, and functional singleness, and is safe and environment-friendly in use.

IPC Classes  ?

• D01F 1/10 - Other agents for modifying properties
• D01F 6/88 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
• D01F 6/96 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from other synthetic polymers
• D01D 1/00 - Treatment of filament-forming or like material

Abstract

Disclosed is an application of a tricyclopentadienyl rare-earth metal complex in catalyzing a reaction of aldehyde and allylboronic acid. Allyl alcohol is prepared from raw materials comprising aldehyde and allylboronic acid with the tricyclopentadienyl rare-earth metal complex as a catalyst. The preparation difficulty of the catalyst is reduced and the posttreatment cost is reduced while the reaction condition is mild and the catalytic activity is improved.

IPC Classes  ?

• C07C 29/38 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions with formation of hydroxy groups, which may occur via intermediates being derivatives of hydroxy groups, e.g. O-metal by reaction with aldehydes or ketones
• C07C 33/03 - Acyclic alcohols with carbon-to-carbon double bonds with only one double bond in beta-position, e.g. allyl alcohol, methallyl alcohol
• B01J 31/22 - Organic complexes

Abstract

Disclosed are a method for preparing a liquid disperse dye and the use of same, wherein the liquid disperse dye is composed of a 1-amino-4-hydroxy-9,10-anthraquinone derivative, CNF, 1815, sodium polyacrylate, a water-soluble polyester, and a water-soluble polyether, wherein the liquid disperse dye can completely avoid the occurrence of blue stains caused by the 1-amino-4-hydroxy-9,10-anthraquinone derivative during high temperature dyeing, improves the rate of success of dyeing an article in one step, and improves the dyeing uniformity and color fastness; alternatively, the liquid disperse dye is composed of 1-amino-4-hydroxy-9,10-anthraquinone, CNF,1815, a base, ethanol, sodium polyacrylate, a water-soluble polyester, and a water-soluble polyether. By means of the addition of the water-soluble polyester and polyether and the sodium polyacrylate, a fuchsia dyed article is obtained for the first time; in addition, the problem that existing fuchsia colors all require color matching is solved, the technological adaptability thereof is extended, and same meets the requirements for low water consumption printing and dyeing processing technologies.

IPC Classes  ?

• D06P 1/20 - Anthraquinone dyes
• D06P 1/44 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
• D06P 1/52 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
• D06P 1/60 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
• D06P 3/54 - Polyesters using dispersed dyestuffs
• C09B 67/40 - Preparations of disperse dyes in liquid form

Abstract

33, Ln being a rare earth metal selected from the lanthanides. The preparation method has extremely high catalytic activity and, at the same time, mild reaction conditions, easy product post-processing, a short reaction time, low catalyst usage, and a great range of substrate applicability and allows industrialized production.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids
• B01J 31/22 - Organic complexes

Abstract

NN-hydroxysuccinimide (NHS) crosslinking agents, to give a smart hydrogel. The hydrogel has excellent mechanical properties, good biocompatibility, biodegradability, and responsiveness to temperature, pH, and ionic strength among others. The hydrogel has broad application prospects in biomedical applications such as controlled drug release, tissue engineering scaffolds, and wound dressings. The smart hydrogel has a simple preparation method and a short process flow and can be batch manufactured easily.

IPC Classes  ?

• C08J 3/075 - Macromolecular gels

Abstract

Disclosed are a carborane-ceramic-coating-based heat-resistant textile and a preparation method therefor, the textile comprising an aramid textile and a carborane ceramic coating, wherein the carborane ceramic coating is prepared from a carborane ceramic precursor; and the precursor has a cross-linked network structure with a cyclic silazane as a framework support, and has a very good yield of ceramization during further cross-linking. Therefore, a dense ceramic coating can be formed on the surface of aramid fibres. The process provided for preparing the precursor is simple and convenient, has mild preparation reaction conditions and easily available raw materials, and is suitable for industrial scale production. The aramid textile having been treated by means of the coating has an excellent heat resistance and oxidation resistance.

IPC Classes  ?

• D06M 13/513 - Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
• D06M 11/80 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with boron or compounds thereof, e.g. borides
• C08G 77/54 - Nitrogen-containing linkages
• C08G 77/06 - Preparatory processes
• C09D 183/14 - Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon onlyCoating compositions based on derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
• C04B 35/80 - Fibres, filaments, whiskers, platelets, or the like
• C04B 35/58 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides
• D06M 101/36 - Aromatic polyamides

Abstract

Disclosed are an intelligent-type surface hydrophilicity/hydrophobicity-convertible fabric finishing liquid and a preparation method therefor, wherein an effective constituent of the provided finishing liquid is a perfluoroalkyl azophenyl acrylate copolymer. A perfluoroalkyl azophenol as a starting raw material is subjected to an esterification reaction with acryloyl chloride to obtain an acrylate monomer containing perfluoroalkyl azophenyl, and same is then subjected to emulsion polymerization with hydroxyethyl methylacrylate and butyl acrylate to prepare an acrylate copolymer emulsion containing perfluoroalkyl azophenyl. By increasing the amount of an initiator during the emulsion polymerization, the resulting copolymer has a low degree of polymerization, a shorter copolymer molecule backbone, and a small degree of molecular chain entanglement, and therefore, the molecular isomerism capability of an azophenyl pendant is strong, with this being conducive to surface hydrophilicity/hydrophobicity conversion. The intelligent-type surface hydrophilicity/hydrophobicity-convertible fabric finishing liquid has mild preparation reaction conditions and a simple preparation process, and is suitable for industrialized production.

IPC Classes  ?

• D06M 15/277 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acidsSalts or esters thereof containing fluorine
• C08F 220/22 - Esters containing halogen

Abstract

The invention discloses a proofing dyeing cup for supercritical fluid waterless dyeing and finishing, which achieves separate or simultaneous filling of the medium into multiple dyeing units, and simultaneous heating of the dyeing units for proofing processing. Efficiency of proofing processing such as high-pressure supercritical fluid waterless dyeing and thus the utilization rate of the medium boosting and filling system and separation and recycling system are significantly improved, so that the proofing requirements of commercial production of textile waterless dyeing and finishing are met. Furthermore, dye chemicals at the bottom of the cup can be stirred to facilitate dissolution, and the dye chemicals at the bottom of the cup can be swept and cleaned. Thus, defects of an existing fixed supercritical fluid dyeing proofing device or an equipment system thereof, such as low utilization efficiency, complex cleaning and incapability of meeting the proofing requirements of commercial production, are overcome.

IPC Classes  ?

• D06B 23/10 - Devices for dyeing samples
• D06B 23/14 - Containers, e.g. vats
• D06B 23/18 - Sealing arrangements
• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
• D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
• D06B 19/00 - Treatment of textile materials by liquids, gases, or vapours, not provided for in groups
• D06B 9/00 - Solvent-treatment of textile materials

Abstract

A fibroin fiber frame and manufacturing method thereof. The manufacturing method comprises: after degumming of silk, immersing the silk in an acidic solution for dispersion treatment to obtain a silk fiber dispersion; injecting a silk fiber dispersion into a mold for freeze treatment to obtain frozen silk fiber; immersing the frozen silk fiber in water or an organic solvent for acid removal, then immersing and washing with deionized water to obtain a wet fibroin fiber frame; subjecting the wet fibroin fiber frame to freeze treatment to obtain a frozen material, then freeze-drying the frozen material to obtain a fibroin fiber frame. The internal structure of the fibroin fiber frame is mainly composed of fiber, facilitating nutrient delivery, cell migration, and tissue growth.

IPC Classes  ?

• A61L 27/22 - Polypeptides or derivatives thereof
• A61L 27/50 - Materials characterised by their function or physical properties
• A61L 27/56 - Porous or cellular materials

Abstract

Disclosed in the present invention is a textile water-repellent finishing liquid based on fluorine-containing polyurethane, a preparation method therefor, and a use thereof. The preparation method comprises: adding a non-ionic surfactant and a cationic surfactant into a de-ionized water, slowly adding dropwise a fluoroalkyl-containing polyurethane solution, and further stirring at a high speed to obtain a uniform finishing liquid; and carrying out an addition polymerization reaction on the fluoroalkyl-containing polyurethane with fluoroalkyl-containing copolyether glycol and diisocyanate in the presence of a fluorine-containing solubilizing agent. Due to the structure of a fluoroalkyl lateral-group type polyether block, the fluorine-containing polyurethane has high fluorine content, and thus surface energy is low. The polyurethane is emulsified to prepare the finishing liquid which is used for finishing the textile and has a water contact angle of greater than 139.5 degrees; and the finishing liquid has excellent water-repellent function.

IPC Classes  ?

• C08G 18/66 - Compounds of groups , , or
• C08G 18/50 - Polyethers having hetero atoms other than oxygen
• D06M 15/576 - Polyureas, polyurethanes or other polymers having ureide or urethane linksPrecondensation products forming them containing fluorine
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

The invention relates to a separation, recycling and self-cleaning system of a supercritical fluid dyeing machine. The system includes a supercritical fluid medium reservoir, one or more parallel dyeing units, a high-pressure pump, a primary separator, a secondary separator and a membrane separator sequentially connected. A dyeing medium and residual dye in dyeing units can be efficiently separated and recycled simultaneously, and when the separation and recycling is finished, each dyeing unit can be directly opened so that the dyeing units and products can be cleaned after dyeing, thereby improving the production and processing efficiency of supercritical fluid waterless dyeing and achieving simple operations, complete separation, stability and reliability and a blowback self-cleaning. The invention has a broad application prospect and practical significance in fundamentally addressing generation and emission of pollutants in the textile printing and dyeing industry and realizing energy conservation, consumption reduction, emission reduction and clean production.

IPC Classes  ?

• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
• D06P 1/81 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in inorganic solvents
• D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
• D06B 23/14 - Containers, e.g. vats
• D06B 23/30 - Means for cleaning apparatus or machines, or parts thereof
• D06B 9/02 - Solvent-treatment of textile materials solvent-dyeing
• D06B 9/06 - Solvent-treatment of textile materials with recovery of the solvent
• D06B 19/00 - Treatment of textile materials by liquids, gases, or vapours, not provided for in groups
• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/54 - Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms

Abstract

The invention discloses a mobile dyeing cup for supercritical fluid waterless dyeing and finishing. The dyeing cup achieves separate or simultaneous filling of the medium into multiple dyeing units, and simultaneous heating of the dyeing units for proofing processing. A medium outlet is provided at the lowest position of the bottom of the cup, and the inner surface of the dyeing cup is coated with polytetrafluoroethylene, to effectively reduce residual dye chemicals in the cup and improve the cleaning efficiency. The perforated baffle at the bottom of the cup effectively prevents a textile product from blocking the medium outlet during medium filling and outputting, so that the processing medium and residual dye chemicals can be smoothly discharged. Accordingly, defects of an existing fixed proofing device such as low utilization efficiency, complex cleaning and incapability of meeting the proofing requirements of commercial production are overcome.

IPC Classes  ?

• D06B 23/10 - Devices for dyeing samples
• D06B 9/02 - Solvent-treatment of textile materials solvent-dyeing
• D06B 23/14 - Containers, e.g. vats
• D06B 19/00 - Treatment of textile materials by liquids, gases, or vapours, not provided for in groups
• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation

Abstract

The invention relates to a multi-pipe quantitative medium filling system of a supercritical fluid waterless dyeing machine. The system comprises a supercritical fluid medium reservoir, a stop valve, and a medium filter sequentially connected by a high-pressure main pipe, and at least two filling branches independent of each other and connected to the medium filter. Each filling branch includes a booster pump, a supercritical fluid high-pressure mass flowmeter, a ball valve, and a dyeing unit sequentially connected along a medium forward direction by a high-pressure branch pipe. By using a mass-measurement filling system having multiple branches independent of each other, the invention can effectively realize simultaneous and accurate quantitative medium filling for separate dyeing units and differentiated filling for dyeing units with different medium masses, thus overcoming disadvantages such as unreliability, inaccuracy and low use efficiency of a conventional method, and also making a dyeing operation simple and scientifically feasible.

IPC Classes  ?

• D06B 9/02 - Solvent-treatment of textile materials solvent-dyeing
• D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
• D06B 19/00 - Treatment of textile materials by liquids, gases, or vapours, not provided for in groups
• D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
• D06B 23/10 - Devices for dyeing samples

Abstract

A proofing machine for supercritical fluid anhydrous dyeing, comprising: a proofing machine case, a rotary frame and a thermal insulating disc which are provided vertically and front-to-rear coaxially in the proofing machine case, and a rotary drive shaft fixedly and coaxially connected to the rotary frame; a plurality of radially arranged infrared heating tubes are provided between the rotary frame and the thermal insulating disc on a circumferential surface coaxial thereto; an outer surface on a side of the thermal insulating disc close to the infrared heating tubes is covered by an infrared reflecting film or a plating layer; a plurality of radially arranged dyeing cups are provided on the rotary frame and on a circumferential surface coaxial to the rotary frame and the thermal insulating disc; the infrared heating tubes and the dyeing cups are arranged to be a multiple with respect to a longitudinal section line basic angle of the thermal insulating disc; thus, the present invention achieves supercritical fluid anhydrous dyeing proofing for a plurality of samples, while having advantages such as being highly efficient in dyeing proofing, easy to operate, highly accurate, stable and reliable, highly adaptable, and ecologically and environmentally friendly.

IPC Classes  ?

• D06B 23/10 - Devices for dyeing samples
• D06B 23/18 - Sealing arrangements

Abstract

A high performance natural silk fiber and a preparation method thereof, wherein silk, raw silk, twisted silk or braided silk thread is used as the raw material, which then becomes a high performance silk fiber after being shrunk or stretched; more specifically, a silk swelling solution is prepared by mixing an inorganic salt, an acid and water according to a certain ratio, the silk fiber is then immersed in the swelling solution in order to be stretched/shrunk; and finally the high performance silk fiber is obtained following rinsing with clean water, neutralizing and drying. The preparation method is simple and effective, and has a short process. The breaking strength of the silk fiber prepared by means of this method is comparable to that of spider silk. Therefore, it is well suited for application in high-tech fields, such as artificial ligaments, ophthalmic sutures, protective clothing, etc.

IPC Classes  ?

• D06M 13/188 - Monocarboxylic acidsAnhydrides, halides or salts thereof
• D06M 11/13 - Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic Table
• D01C 3/00 - Treatment of animal material, e.g. chemical scouring of wool
• D02J 1/22 - Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch

Abstract

−1.

IPC Classes  ?

• C07C 245/20 - Diazonium compounds
• C07B 43/00 - Formation or introduction of functional groups containing nitrogen
• C09K 3/00 - Materials not provided for elsewhere

Abstract

The invention provides a method for measuring the diffusion performance of an acid dye in a color paste, comprising preparing a primary paste and placing the primary paste into a transparent cylindrical container; adding a dye to the primary paste formulate a color paste, and flatly and uniformly paving a layer of the color paste on an upper surface of the primary paste; performing constant-temperature treatment at 60-95° C. on the cylindrical container, so that the dye in the color paste on the top of the blank primary paste in the cylindrical container diffuses downwards to the bottom of the cylinder; and sampling the primary paste from a sampling hole, and diluting the sampled primary paste with deionized water. The method of the invention has simple operation steps, reliable and safe experiments, highly stable test data and good reproducibility of results, and high temperature and high pressure are not required herein.

IPC Classes  ?

• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
• G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light

Abstract

Disclosed is a method for preparing a bismuth oxide nano-particle/titania nano-tube array, which method comprises the following steps: S1. pre-treating a titanium sheet; S2. preparing a TiO2 nano-tube array by an anodic oxidation method; and S3. self-assembling to prepare the bismuth oxide nano-particle/titania nano-tube array. A complex of the bismuth oxide nano-particle and the titania nano-tube is prepared from the bismuth oxide nano-particle/titania nano-tube array of the present invention by self-assembly and calcination techniques, which solves problems of a complex manufacturing procedure, long time consumption, poor stability and the like in the existing processes.

IPC Classes  ?

• H01G 9/20 - Light-sensitive devices
• B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
• B82Y 40/00 - Manufacture or treatment of nanostructures

Abstract

Disclosed is a method for constructing a surface of a fabric with ultraviolet protection and wash-resistant special wetting functions. The method comprises the following steps: dissolving titanium potassium oxalate in a mixed solution of water and diethylene glycol; uniformly stirring under the action of a magnetic rotor; filling the prepared solution into a hydrothermal reaction vessel; adding a clean fabric into the hydrothermal reaction vessel and putting the vessel into an oven for reaction to prepare a fabric with a nano-TiO2 membrane surface; soaking the fabric with a nano-TiO2 membrane surface into a silane solution to react; and then taking out the fabric to perform drying to prepare the fabric having a fabric surface with ultraviolet protection and wash-resistant special wetting functions. The method has the advantages of simple process, easiness in operation, controllable reaction conditions, wide application range, wide source of raw materials, low cost, no pollution, excellent anti-ultraviolet performance, wash resistance, lasting and stable super-hydrophobic self-cleaning performance and good oil-water separation function, and the fabric is excellent in comfortableness and air permeability.

IPC Classes  ?

• D06M 11/46 - Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic TableTitanatesZirconatesStannatesPlumbates
• D06M 13/513 - Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
• D06M 101/06 - Vegetal fibres cellulosic

Abstract

Provided is a solvent medium for a diazotization reaction, comprising mutually mixed polyethyleneglycol and water; the molecular weight of the polyethyleneglycol is 200-600; the volume ratio of polyethyleneglycol and water is 1:0.4-1.5. The solvent medium has significant phase transfer catalysis, effectively shortens the diazotization reaction time, speeds up the diazotization reaction process, effectively prevents the formation of a diazonium amino compound, and maintains the stability of diazonium salt, thus improving the yield of diazonium salt. The solvent medium is utilized to produce the diazonium salt, and the produced diazonium salt has better quality; in addition, the production process is easy to operate and more environmentally friendly, and the production device has low manufacturing costs and high safety.

IPC Classes  ?

• C07C 245/20 - Diazonium compounds
• C07B 43/00 - Formation or introduction of functional groups containing nitrogen

Abstract

A method for measuring the diffusion performance of an acid dye in color paste comprises: preparing primary paste with a certain solid content using a paste material, and adding an appropriate amount of the primary paste into a transparent cylindrical container; additionally taking an appropriate amount of the primary paste and adding a dye to be measured to prepare the color paste, then flatly and uniformly paving a layer of a fixed amount of color paste on the upper end surface of the primary paste in the cylindrical container; and finally, placing the cylindrical container in an automatic temperature control device for constant-temperature treatment for 1-5 hours at a temperature of 60℃ to 95℃, so that the dye in the color paste on the empty top of the primary paste in the cylindrical container diffuses downwards to the bottom of the cylinder; sampling 0.1-1.0 g of the primary paste from a sampling hole at the bottom of the cylindrical container, and diluting the sampled primary paste to 10-100 mL with deionized water. An objective of the present invention is to provide a method capable of accurate measurement of the diffusion performance of an acid dye in color paste, which is simple in operation steps, free of high temperature and high pressure, safe and reliable in experiments, high in data stability and good in result reappearance.

IPC Classes  ?

• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects