86 results about "Dark reaction" patented technology

It is an object of the present invention to provide an adhesive for sealing an organic electroluminescence device, an adhesive tape for sealing an organic electroluminescence device, a double-faced adhesive tape for sealing an organic electroluminescence device, a method of sealing an organic electroluminescence device and an organic electroluminescence device, which can seal an organic electroluminescence device without degrading it with light or heat. The present invention relates to an adhesive for sealing an organic electroluminescence device, which comprises a photo cationic polymerizable adhesive containing a photo cationic polymerizable compound and a photo cationic polymerization initiator and, initiating a curing reaction by light irradiation and proceeding the curing reaction by a dark reaction even after interrupting the light irradiation.

A light source for a photo-reactive curing apparatus is provided, which includes a plurality of light source elements or modules, such as, UV or visible LEDs or LED arrays, arranged to provide a beam profile comprising irradiation zones separated by a dark zone. Photo-polymerization occurs during periods of irradiation and dark polymerization occurs during dark intervals between irradiation. The relative positioning or spacing of light source elements or modules is set to provide an exposure profile with a dark interval which matches the required dark reaction interval for optimal curing efficiency. In modular or adjustable light sources, the spacing is adjustable dependent on process parameters. For processes such as inkjet printing, the beam profile may be better matched to the ink chemistry, so as to control the polymerization reaction to meet a required process speed for single pass or multiple pass applications.

The invention discloses a layer-by-layer electrostatic self-assembling method based on dopamine-modified polyelectrolyte and application. Dopamine and polyelectrolyte with carboxyl are subjected to dark reaction through carbodiimide/N-hydroxysuccinimide (EDS/NHS) so as to generate the polyelectrolyte of which a carboxyl part of a main chain is substituted by a pyrocatechol functional group; two hydroxyl groups on a benzene ring of pyrocatechol form tight combination with the material surface; and the obtained polyelectrolyte is alternatively deposited together with the polyelectrolyte with opposite charges so as to be assembled into a multi-layer film. Compared with other layer-by-layer assembling techniques, the layer-by-layer electrostatic self-assembling method disclosed by the invention has the advantages that being simple in operation, not affected by material and shape of a substrate, free of surface pretreatment, high in binding strength with the substrate and better in popularization and application value.

The invention relates to a silk screen cleaning agent for silk screen printing, which consists of 100 portions of aqueous solution and 0.01 to 10 portions of phosphoric acid containing ionic compound in portion by weight, wherein the aqueous solution is prepared by mixing 12 to 50 percent of water-soluble organic solvent and 50 to 88 percent of deionized water in percentage by weight. Compared with the prior art, the silk screen cleaning agent can prevent iron ions from being separated out from the surface of a stainless steel silk screen, prevent dark reactions of diazonium series photosensitive materials, persistently obtain the most suitable picture features, and keep the hydrophilic property on the surface of stainless steel silk screen, so the adherence of the photosensitive material consisting of the silk screen cleaning agent and water-soluble resin is improved, and subtle patterns of the plate-making process step and the printing process step are prevented from being broken off.

The invention discloses a UV curable epoxy system organic packaging composition, a preparation method and a use method thereof, wherein the organic packaging composition comprises, by weight, 10-90% of silicon-based epoxy, 10-90% of non-silicon-based epoxy, 5-40% of a diluent, 0.5-10% of a photoinitiator, and 0.5-10% of a photosensitizer, wherein the non-silicon-based epoxy is a one or a mixture comprising two selected from bifunctional epoxy and polyfunctional epoxy, and the diluent is aromatic or aliphatic non-silicon-based monoepoxy. According to the present invention, the UV curable epoxysystem organic packaging composition can achieve the organic packaging film with advantages of high light transmittance, high curing rate, high adhesion, small volume yield, no oxygen inhibition and dark reaction.

The invention discloses a photo-thermal double-curing 3D printing method by using ROMP and a product thereof. The method includes: mixing raw materials and performing photo-curing 3D printing and performing thermal-curing to obtain the 3D printing product. The raw materials comprise: polyurethane (meth)acrylate, a diluent, an initiator, cyclic olefin monomer, and a thermally induced ROMP catalyst,wherein the polyurethane (meth)acrylate is obtained through a reaction of isocyanate and polyol and termination by (meth)acrylate containing hydroxyl; the polyol is polyester polyol or polyether polyol with molecular being not less than 1,000. The method avoids the problem of brittleness of the photo-cured product due to the thermal-curing of the ROMP and achieves the ROMP in a dark reaction during light-dark dual curing. The product has basic toughness and satisfies industrial manufacturing application.

The invention discloses a device for online measuring the content of volatile organic compounds and a method for online measuring the content. According to the method, the problem that the content of volatile organic compounds cannot be continuously monitored by a current method can be solved. The measuring device comprises a reaction cell, a light source system, a gas circulating system and a detecting system, wherein the gas circulating system is divided into two paths; the first path of the gas circulating system comprises a first gas vacuum pump and a first silicone tube; the second path of the gas circulating system comprises a second gas vacuum pump and a second silicone tube; one end of the first silicone tube is connected to a hose, an injection chamber and the first gas vacuum pump; the other end of the first silicone tube is communicated with the reaction cell; the hose is connected with the reaction cell. According to the device and the method, the content of volatile organic compounds (VOC) can be detected online, and the degradation rate of photoreaction and dark reaction of some photo-catalytic material can be evaluated; NOx, SOx, benzene series, organic chloride, Freon series, organic ketone, amine, alcohol, ether, ester, acid, aldehyde and petroleum hydrocarbon and other volatile organic compounds can be detected online.

The invention discloses a preparation method of a quantum dot sensitized solar cell light cathode. The preparation method comprises the following steps: firstly dispersing titanium dioxide quantum dots and one of sulfur/selenium/antimony telluride quantum dots, copper-indium sulfide quantum dots, copper-indium-selenium quantum dots, copper-zinc-tin-sulfur quantum dots and copper-zinc-tin-selenium quantum dots which contain an oleic acid or oleylamine stabilizer in a same non-polar solvent respectively to form oil-phase solutions; then uniformly mixing two oil-phase solutions, and adding a solar solvophobic solvent so that the titanium dioxide quantum dots and chalcogenide quantum dots are coprecipitated to form a titanium dioxide-chalcogenide quantum dot aggregate; and finally coating the titanium dioxide-chalcogenide quantum dot aggregate on conducting glass through titanium tetrachloride treatment, and carrying out heat treatment under an argon atmosphere to form the quantum dot sensitized solar cell light cathode. The preparation method disclosed by the invention is simple, the stability and light-induced electron transmission performance of a quantum dot sensitized solar cell can be obviously improved, and the dark reaction of the cell is reduced.

The invention discloses a silver iodide nanoparticle-modified bismuth tungstate heterojunction photocatalyst and a preparation method and application thereof. The photocatalyst uses three-dimensionalmicro-spherical bismuth tungstate as a carrier; the carrier is modified with silver iodide nanoparticles; the mass ratio of the carrier to the silver iodide nanoparticles is (0.05-0.4):1. The preparation method includes: preparing three-dimensional micro-spherical bismuth tungstate mixed solution, mixing the solution with an Ag+-containing substance, allowing dark reaction to proceed for 30-60 min, adding iodides, continuing to carry out black reaction for 1-1.5 h, centrifuging, washing, and drying to obtain the photocatalyst. The photocatalyst has the advantages of environmental friendliness,large specific surface area, good catalytic oxidative activity, high separation efficiency of photo-generated carrier, good reusability and the like; the preparation method has the advantages of goodsimplicity, controllable reaction conditions and the like. The photocatalyst is widely applicable to the degradation of organic wastewater, can effectively degrade organic matters in the wastewater,and has a good practical application prospect.

The invention discloses a preparation method of a zirconium oxide-based adsorbing photocatalyst and relates to a preparation method of a catalyst which has adsorption and photocatalytic performance atthe same time. The preparation method comprises the following steps: preparing a silicon-zirconium sol from raw materials of zirconium oxychloride, citric acid, polyethylene glycol, distilled water and polyethylene glycol in a certain proportion; adding a certain amount of PS spheres to prepare a compound sol; and drying and thermally treating the sol to obtain the zirconium oxide-silicon dioxide(SiO2-ZrO2) compound photocatalyst of a porous structure. After a dark reaction for 75 minutes, the adsorption rate of the catalyst to rhodamine B can reach 90%, and the degrading rate of rhodamine Bafter photoreaction for 165 minutes reaches over 95%. The problems that the visible photocatalyst is low in adsorption efficiency and poor in catalytic activity to dye pollutants and the existing preparation method is complex and high in preparation cost can be solved.

The invention discloses a method used for promoting biological reduction of nitrobenzene with biological carbon, and belongs to the technical field of pollutant biological treatment. The method comprises following steps: biological carbon with a concentration ranging from 0.167 to 0.667g/L is added into 50mL of solution containing 5 to 400mg/L of nitrobenzene; an obtained mixture is delivered into an anaerobic bottle; 0.5g/L of dissimilatory reduction bacteria cells are added; and then the anaerobic bottle is delivered into a constant temperature shaking table for 1 to 10d of dark reaction at 30 DEG C at a speed of 150rpm. The biological carbon used in the method comprises biological carbon prepared via natural burning method and oxygen limited pyrolysis. The biological carbon can be used for increasing biological reduction rate of nitrobenzene in water rapidly and effectively; a preparation method of the biological carbon is simple; raw materials are widely available and cheap; operationality is high; and the method is convenient for popularization and application.

A pressure-sensitive adhesive tape comprising or consisting of a radiation-activatable polymerizable composition comprising or consisting of:

• • A 5 to 60 parts by weight of at least one film former component;
  • B 40 to 95 parts by weight of at least one epoxy component;
  • C 0.1 to 10 parts by weight of at least one photoinitiator, and
  • D optionally 0.1 to 200 parts by weight of at least one additive,

based in each case on the radiation-activatable polymerizable composition, where the parts by weight of components A and B add up to 100, wherein the film former component A comprises or consists of at least one polyurethane polymer and method of joining two components with the pressure-sensitive adhesive tape.

The present invention belongs to the field of free radical producing chemical reaction technology, and relates to the dark reaction process of quinone derivative composite to produce free radical and its application. The quinone derivative includes perylene quinone and anthraquinone, and the dark reaction process includes dispersing quinone derivative in surfactant solution, adding reductant with lower oxidation-reduction potential to form dark reaction composite for producing free radical. Under dark condition, the dark reaction composite produce great amount of active oxygen to inhibit the growth of fungi effectively in the effect higher than that of chemical sterilizer and less resistance. The present invention has wide application in preparing sterilizer and preparation for degrading dark environment pollutant.

The invention discloses a mobile light supplementing method. By constructing a ropeway and a moving motor on the roof of a greenhouse and putting light supplementing lamps on the ropeway, the light supplementing lamps can move to and fro; a day is divided into two periods of time, i.e. a period A of time and a period B of time, the period A of time is from 8:00 to 16:00, and the period B of time is from 16:00 to 8:00 in the next day; light is not supplemented in the period B of time, the light supplementing lamps start to supplement light in the period A of time when irradiation in the greenhouse is lower than a set value, at the moment, the motor is switched on, and the light supplementing lamps are dragged by the motor to move to and fro at the speed of 0.1m/s to 0.4m/s on the ropeway to supplement light to greenhouse crops; the time interval of supplementing light to the greenhouse crops is one to four minutes. The principle of the mobile light supplementing method is that light is supplemented by utilizing the different demands of the crops on light in the photosynthetic process, i.e., light is supplemented at the stage of light reaction, and is not supplemented at the stage of dark reaction. The mobile light supplementing method can increase the utilization efficiency of the individual lamps in light supplementing and reduce the energy consumption of light supplementing, the investment of light supplementing equipment and the operation cost of greenhouses, and can be applied to supplement light to greenhouse crops.

The invention discloses a method for degrading musk ketone under natural light by utilizing titanium dioxide/charcoal hybrid aerogel. The method comprises the following steps: with titanium tetrachloride as a precursor, absolute ethyl alcohol as a solvent, resorcinol and furfural as precursors of an organic phase, propylene epoxide as an inducer of network gel and ethyl acetoacetate as a complexing agent, preparing a titanium dioxide/charcoal hybrid aerogel material by a one-step sol-gel method; adding the dioxide/charcoal hybrid aerogel into wastewater containing musk ketone to have degradation reactions under the condition of natural light, wherein a dark reaction is carried out firstly for 15 minutes, and the following light reaction lasts for 60-90 minutes under the condition of natural light. The method for degrading musk ketone under the natural light by utilizing titanium dioxide/charcoal hybrid aerogel is convenient to operate; compared with a traditional degradation method, the method disclosed by the invention has the advantages that the degradation time is short, degradation can be performed under natural light, and the degradation rate is high.

The invention relates to the field of drug synthesis, specifically to a preparation method of a Bruton's tyrosine kinase inhibitor. The new method comprises: carrying out a dark reaction between 4-amino-3-(4-phenoxylphenyl)-1H-pyridino(3,4-d)pyrimidine and (S)-tert-butoxycarbonyl-3-hydroxy piperidine in the action of triphenyl phosphine and diisopropyl azodiformate, taking Boc off in an acidic condition to form salt, performing crystallization with 25% NaOH to dissolve salt to prepare an intermediate I in one pot, and reacting the intermediate I with acryloyl chloride in an alkaline condition to generate a target product. The preparation method is simple in production condition, low in cost and high in yield, is eco-friendly and clean, and is suitable for industrial production.

The invention discloses a flexible organic package composition and a preparing and use method thereof. The composition comprises, by mass, 10-80% of an epoxy active monomer, 10-80% of an acrylic esteractive monomer, 5-40% of a diluent, 0.5-10% of a photoinitiator and 0.5-10% of an aid. The diluent is a single-functionality-degree acrylic ester or epoxy. The photoinitiator is a free radical photoinitiator or a cation photoinitiator. The composition has the advantages of being high in light permeability, high in curing rate, low in volume shrinkage and free of the oxygen inhibition phenomenon and having dark reaction; by mixing an epoxy system and an acrylic ester system, the interpenetrating network structure is formed in the curing process, and the volume compensation, performance compensation and cost compensation of the two systems are realized.

The invention discloses a photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as a preparation method thereof. Under the induction of visible light, 0.05g of catalyst 30%TiO2/Co4S4.23Se3.77 can adsorb 87% of 50ml of methylthionine chloride with the concentration of 10mg/L in dark reaction for 30 minutes, and the methylthionine chloride can be degraded completely in the radiation by visible light within 40 minutes. The photocatalytic degradation organic matter pollutant catalyst TiO2/Co4S4.23Se3.77 as well as the preparation method thereof, which are provided by the invention, have the advantages that a heterojunction photocatalyst is synthesized by a new method combining a high-temperature solid phase synthesis method with a sol-gel method, is simple in operation, is low in production cost, is high in synthesis yield and purity, and meets the requirement of expanded production.