147 results about "Triphenylmethane" patented technology

The invention relates to the fields of analytical chemistry and food safety, in particular to a method for detecting the residual quantity of multiple alkaline drugs in animal derived food. Based on the vortex mixed extracting of acetonitrile, isopropanol and citric acid buffer solutions, the purification of a hydrophilic polystyrene-divinylbenzene solid phase extraction column and a cation exchange solid phase extraction column and the liquid phase chromatography-mass spectra determination, the method can detect the residual quantity of multiple alkaline drugs in pork, pork liver, eggs, shrimps and milk, such as beta-receptor agonists,sulfonamides, benzodiazepines, nitroimidazoles, benzimidazoles and triphenylmethanes. The method has the advantages of simple operation, fast and accurate detection and high efficiency.

Provided are a novel positive resist composition that includes a low molecular weight material as a base material component, and a method of forming a resist pattern using the positive resist composition.

A positive resist composition including: a base material component (A) that exhibits increased solubility in an alkali developing solution under the action of acid; and an acid generator component (B) that generates acid upon exposure, wherein the base material component (A) comprises a compound (A1) in which either a portion of, or all of, the hydrogen atoms of hydroxyl groups (—OH) within a phenolic compound (I) described below have been substituted with a group containing an acid dissociable, dissolution inhibiting group:

the phenolic compound (I) including 4 triphenylmethane structures, and a tetravalent linking moiety that links the 4 triphenylmethane structures, wherein at least one of the 4 triphenylmethane structures has at least one phenolic hydroxyl group.

An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.

A thermal sensitive recording medium which has a feature to change the color of recorded pattern slowly and spontaneously after development, and the recorded pattern which has several days passed can be easily distinguished from that of just after development. Said thermal sensitive recording medium contains 4-hydroxybenzoic acid ester represented by general formula (I) as a color developer and uses triphenylmethane-based leuco dye and reddish color developing leuco dye whose maximum absorption wave length is 450 DIFFERENCE 560 nm as a dye precursor. In this formula, R represents unsubstituted or substituted lower alkyl group of carbon number 1-7 or benzyl group.

There is provided a colorant material comprising a compound represented by at least one of the following general formulas (1) and (2) as a first colorant compound and at least one of a water insoluble triphenylmethane compound and a water insoluble xanthene compound as a second colorant compound.

The colorant material is useful as a recording material for ink-jet printing or the like.

The invention belongs to the field of biotechnology, and discloses a laccase gene as well as an encoded protein and an application thereof. The open reading frame sequence of the laccase gene fmb-L103 is shown in SEQ ID NO. 1. The amino acid sequence of the protein encoded by the laccase gene fmb-L103 disclosed by the invention is shown in SEQ ID NO. 2. The laccase gene fmb-L103 disclosed by the invention is applied to decoloration for triphenlmethane dyes. The inventor clones from the selected dead bacillus vallismortis fmb-L103 with a spore laccase activity to obtain a novel prokaryotic laccase gene fmb-L103, and realizes the heterologous efficient expression of escherichia colli expression host bacteria. The recombinase fmb-L103 can be used for efficiently catalyzing the degradation of the triphenlmethane dyes of malachite green, brilliant green and aniline blue.

The invention relates to an iron ion loaded activated carbon fiber composite cathode, a preparation method and application thereof. The composite cathode includes iron ion loaded activated carbon fiber. The iron ion loaded activated carbon fiber composite cathode is applied to treatment of humic acid-containing wastewater and triphenylmethane dyes in printing and dyeing wastewater by an Electro-Fenton technique. The method for preparation of the iron ion loaded activated carbon fiber composite cathode includes an inner layer adsorption process and a precipitation process. Iron ions are loaded on activated carbon fiber, the treatment process is simplified, production of sludge is completely eradicated, and no secondary pollution exists; the iron ions loaded on the activated carbon fiber can react with H2O2 generated by electroreduction of dissolved oxygen on the composite cathode surface, thus reinforcing reaction on the composite cathode surface and strengthening the reaction efficiency; iron ions and acidic groups on the surface of the activated carbon fiber undergo inner layer adsorption, so that the iron ions are not easy to fall off during use, and the life of the composite cathode is increased. After repeated use of the composite cathode 4 times, the decolorization rate of the target pollutant is still above 93%.

The invention relates to a fluorescence detection method and provides a fluorescent probe which has high sensitivity and high selectivity and is used for detecting intracellular hypochloric acid and an application of thiospirolactone in intracellular hypochloric acid detection. The structure of the fluorescent probe for detecting the intracellular hypochloric acid is a triphenylmethane fluorescent probe with a Xanthone ring parent structure; and the fluorescent probes of the thiospirolactone all adopt corresponding spirolactones as raw materials. The thiospirolactone has high-sensitivity fluorescent response characteristics on hypochloric acid, and when being used in the fluorescent probe for detecting the intracellular hypochloric acid, the selectivity is high. The probe has strong lightstability, no illumination self oxidation, rapid response to an aimed compound, good cell permeability and no strong cytotoxicity, and a product formed by combining the fluorescent probe and the aimed compound has strong photobleaching resistance. The thiospirolactone used for detecting the hypochloric acid of the aimed compound has high sensitivity and strong specificity and other active oxygen in cells has no interference on the detection.

The invention provides an environmental friendly chromotropic paint with warning function and a preparation method thereof. The paint comprises the following components in parts by weight: 10-30 parts of a polyurethane resin material, 20-40 parts of ethanol, 0.01-0.03 parts of an antishrinking agent, and 0.03-2 parts of triphenylmethane dyes or fluorane dyes. The preparation method comprises the following steps: adding polyurethane resin in triphenylmethane dyes or fluorane dyes dissolved by absolute ethyl alcohol, thoroughly dissolving the materials for dissolution; adding the antishrinking agent into a mixed solution, and stirring the materials to obtain the product. The most important feature of the paint is that the paint can effectively warn the superacid or superbasic environment which is harmful to human health, can keep the air circulation of working environment in time, and takes active protective measurements. The paint has the advantages of simple formula, low cost and easy production with a large scale.

The invention relates to a polyimide-epoxy type electrical insulating paint and a preparation method thereof. The polyimide-epoxy type electrical insulating paint comprises the components: a maleimide polyimide resin solution, N, N, N', N', O-5-penta-glycidyl-4,4'-diamido-4''-hydroxyl triphenylmethane, N, N, N', N'-4-tetra-glycidyl-4,4'-diamido-diphenyl methane and 2-ethyl-4- methylimidazole which have the weight ratio of 100: (80-100): (80-100):(10-30). The preparation method comprises the steps of: evenly stirring and mixing all the components at the room temperature to obtain the paint. The polyimide-epoxy type electrical insulating paint is moderate in viscosity, good in using technological efficiency, excellent in adhesive property for metal base materials (such as iron, copper, aluminium alloy, glass and ceramics), simple in preparation technology and convenient in operation and reaction raw material source; and the preparation process can be completed in general equipment and is beneficial to realization of industrial production.

The invention discloses a thermochromic polypropylene composition. The thermochromic polypropylene composition comprises, by weight, 95-99 parts of polypropylene resin and 0.5-3 parts of thermochromicmicrocapsules. The core of the thermochromic microcapsule is prepared from a triphenylmethane-metal complex and the wall of the thermochromic microcapsule is synthesized from formaldehyde and melamine through polymerization according to a mole ratio of 2.5/1 to 3/1. The preparation method of the thermochromic microcapsule comprises that formaldehyde and melamine undergo an addition reaction at pHof 7.5-8.5 to produce a methylol melamine prepolymer, a triphenylmethane-metal complex is dispersed in a sodium dodecyl sulfate aqueous solution with a concentration of 0.2-1.0 wt%, the methylol melamine prepolymer is added into the solution, the pH is adjusted to 5.5-6.5 so that a microcapsule emulsion is obtained, the microcapsule emulsion undergoes a reaction at 80-90 DEG C for 3h, and the reaction product is washed, is subjected to suction filtration and is dried so that the thermochromic microcapsule is obtained. The thermochromic polypropylene composition can resist heat in a long termand can be widely used in automobile dashboards, accessory dashboards, seats, door plates, bumpers or stand columns.

The invention relates to a high-efficiency antifoaming agent and a preparation method thereof. The high-efficiency antifoaming agent is mainly composed of fluorosilicon oil, triphenylmethane, a nonylphenol polyoxyethylene ether emulsifier, deionized water and a thickening agent. The high-efficiency antifoaming agent has characteristics of strong antifoaming efficacy, low surface tension, low volatile, no toxicity, no pollution and physiological inertness, and also is resistant to high temperature and strong alkalinity.

Colorant compositions are useful for a wide variety of product applications. For example, colorants are used in tinting of polymers, providing colors to aqueous solution(s), and affording color to solid or semi-solid products such as detergents. Disclosed herein are colorant compositions having a triphenylmethane (“TPM”) structure having improved stability to alkaline conditions. Thus, the colorant compositions resist decolorization, even at relatively high pH levels.

The invention provides a bacillus subtilis ZNXH1 sourced bacterial laccase gene, bacterial laccase and application thereof, belongs to the technical field of biology, and particularly relates to a bacillus subtilis ZNXH1 sourced bacterial laccase gene cahh1, bacterial laccase CAHH1 expressed by the gene and application of the bacterial laccase CAHH1 in the fields of textile industry, environmental protection and the like. Compared with traditional laccase, the bacterial laccase CAHH1 has the advantages of remarkable application stability and broad spectrum effect, mainly including that (1) the bacterial laccase CAHH1 has better pH stability in a range of 3-9; (2) the bacterial laccase CAHH1 has better temperature stability in a range of 30-90 DEG C; and (3) the bacterial laccase CAHH1 has a strong decolorizing effect on indigo dye, azo dye and triphenylmethane dye. The bacterial laccase can be used for decolorizing industrial dye, has wide application prospects, can easily realize engineering preparation and has higher practical values.

The invention provides an ablative heat-insulating coating and a preparation method thereof. The ablative heat-insulating coating comprises a base material, a filler and an auxiliary material based on weight percent. The base material is room temperature vulcanization block methyl silicone rubber and accounts for 68 to 73 weight percent; the filler comprises 13 to 14 weight percent of quartz powder and 8 to 15 weight percent of cork powder; and the auxiliary material is a plasticizer and an antioxidant and accounts for 4 to 5 weight percent. The auxiliary material is a mixture of the following components in percentage by weight: 0.3 to 0.5 percent of triphenylmethane, 0.3 to 0.5 percent of benzophenone, 0.4 to 0.6 percent of di-tert-butyl- p-cresol, 1.5 to 1.7 percent of dibutyl phthalate, and 1.5 to 1.7 percent of di-n-octyl ortho-phthalate. The quartz powder has the granularity of 200 meshes and has the purity of 99.8 percent; and the cork powder has the granularity of more than 80 meshes and has the moisture content of less than 10 percent. The ablative heat-insulating coating is coated on the surface of a device after being diluted by gasoline, and a layer of aluminum powder is sprayed on the outer surface of the coating. The ablative heat-insulating coating has the characteristics of low cost, convenient construction, good heat-insulating performance, strong adhesive force, and long service life.

An object is to provide a resin composition that has excellent dielectric properties, that yields a highly heat-resistant cured product, that provides a low viscosity when made into a varnish, and that has a high Tg and a high flame retardancy without containing halogen. The resin composition contains a polyarylene ether copolymer (A) that has an intrinsic viscosity, measured in methylene chloride at 25° C., of 0.03 to 0.12 dL/g and that has an average of 1.5 to 3 phenolic hydroxyl groups in molecular terminal position per molecule, a triphenylmethane-type epoxy resin (B) that has a softening point of 50 to 70° C., and a cure accelerator (C), wherein the content of the polyarylene ether copolymer (A) is 60 to 85 mass parts where the total of the polyarylene ether copolymer (A) and the epoxy resin (B) is 100 mass parts.

There is disclosed a chemically amplified positive resist composition to form a chemically amplified resist film to be used in a lithography, wherein the chemically amplified positive resist composition comprises at least, (A) a base resin, insoluble or poorly soluble in an alkaline solution, having a repeating unit whose phenolic ydroxyl group is protected by a tertiary alkyl group, while soluble in an alkaline solution when the tertiary alkyl group is removed; (B) an acid generator; (C) a basic component; and (D) an organic solvent, and a solid component concentration is controlled so that the chemically amplified resist film having the film thickness of 10 to 100 nm is obtained by a spin coating method. There can be provided, in a lithography, a chemically amplified positive resist composition giving a high resolution with a suppressed LER deterioration caused by film-thinning at the time of forming a chemically amplified resist film with the film thickness of 10 to 100 nm, and a resist patterning process using the same.

The invention discloses a preparation method and application of a magnetic covalent organic framework compound for adsorbing triphenylmethane dyes. The invention belongs to the field of preparation ofmagnetic covalent organic framework compounds. The invention aims to solve the technical problems of complex operation and long reaction time of the existing method for synthesizing the covalent organic frameworks (COFs). The method comprises the following steps of: 1) preparing carboxylated magnetic nano (Fe3O4-COOH); and 2) synthesizing a magnetic covalent organic framework (Fe3O4-COOH(at)COF)on the surface of the magnetic nano material through a Schiff base reaction. The preparation method is simple, the synthesis time is short, and the synthesis only takes 3 hours at high temperature of120 DEG C. The prepared Fe3O4-COOH (at) COF has magnetic responsiveness, high specific surface area, high thermal stability and high adsorption performance (42.8 mg/g-500mg/g). According to the method, the triphenylmethane cationic dyes can be rapidly extracted from a complex sample within 10 minutes, so that multi-residue detection of the triphenylmethane cationic dyes can be realized, the pretreatment process of the complex sample is simplified, and the separation efficiency is greatly improved.