1239 results about "Anthraquinones" patented technology

Laundry detergent compositions comprise (a) surfactant, and (b) a hueing dye selected from triarylmethane blue and violet basic dyes, methine blue and violet basic dyes, anthraquinone blue and violet basic dyes, azo dyes basic blue 16, basic blue 65, basic blue 66 basic blue 67, basic blue 71, basic blue 159, basic violet 19, basic violet 35, basic violet 38, basic violet 48, oxazine dyes, basic blue 3, basic blue 75, basic blue 95, basic blue 122, basic blue 124, basic blue 141, Nile blue A and xanthene dye basic violet 10, and mixtures thereof.

A blue colorant comprising a chromophore having at least one poly(oxyalkylene) chain attached, through aromatic amino group (or groups), to the 1-position, the 4-position, or both, of an anthraquinone backbone is provided. Such colorants exhibit excellent amine/base stability and thermal stability, effective colorations, excellent low extraction rates, and high lightfastness levels, particularly when incorporated within certain media and/or on the surface of certain substrates, particularly polyesters, polyolefins, and polyurethanes. The poly(oxyalkylene) chain or chains can be conveniently tailored to increase the solubility or compatibility in different solvents or resins thereby permitting the introduction of such excellent coloring chromophores within diverse media and/or or diverse substrates as well as provides a liquid colorant which facilitates handling. Compositions and articles comprising such colorants are provided as well as methods for producing such inventive colorants.

The invention relates to a cleaning process for extracting high quality fiber with high efficiency, high yield and low energy consumption from plant raw materials by a combination method of chemistry and machinery in a sectional type. The process comprises the following steps: a raw material is fully immersed in a NaOH solution or a KOH solution or limewater with low concentration (black liquor is used for supplementing into the corresponding alkaline for repeated and circular use) under the normal temperature or certain temperature, wherein the concrete immersion temperature and immersion time can be determined according to the types and the water content of the raw materials so that the alkaline liquor is fully, uniformly and properly absorbed and diffused into plants; steaming under normal pressure or steaming with pressure or no liquid steaming with pressure is used; the steamed material can be selected according to the paper quality requirement by using a blowout slurrying mode or a mode of pulp refining after blowing to form slurry or by using thread rolling and pulp refining to relief material once or multitime to prepare slurry. The novel process combines the advantages of chemical treatment and mechanical pulping, so that the uniform mass transfer and uniform heat transfer can be ensured and the damage to cellulose and hemicellulose by excessive alkali can be reduced, the yield of fiber is raised to about 75% from about 45% of the prior art, so that the novel pulping process is capable of avoiding the usage of auxiliary agents like sulfured and anthraquinone, conveniently extracting and using the cellulose and lignin in black liquor, and overcoming the influence on environment during the process of pulping and post-treating lignin.

The invention relates to a method for production of an aqueous dispersion of polymer-encapsulated pigments, characterised in that (a) an aqueous pigment dispersion, containing at least one organic pigment (P), selected from the group of azo, isoindolinone, isoindoline, anthanthrone, thioindigo, thiazinindigo, triarylcarbonium, quinophthalone, anthraquinone, dioxazine, phthalocyanine, quinacridone, quinacridonquinone, indanthrone, perylene, perinone, pyranthrone, diketopyrrolopyrrole, isoviolanthrone and azomethine pigments, at least one detergent (T), and water is prepared, (b) a monomer miniemulsion, stabilised by a hydrophobic organic compound with a water solubility at 20 DEG C of at most 5x10<-5> g/l, is prepared from a polymerisable monomer (M) and at least one detergent (T) in water, (c) a monomer pigment emulsion is prepared, whereby the aqueous dispersion from (a) and the monomer miniemulsion from (b) are mixed and homogenised and (d) the pigment-containing monomer from (c) is polymerised in the presence of a polymerisation initiator and/or by heat, whereupon an encapsulation of the pigment with the polymer thus formed occurs.

The invention discloses a preparation method of BiVO4-BiOBr photocatalyst has a visible-light response, wherein the catalyst may be used under visible light, ultraviolet light, or sunlight. The preparation method of BiVO4-BiOBr photocatalyst that is in a multilevel nest-like nanostructure and is formed by nanosheets is: heating for 8 to 24 h under an alcohol-heating temperature of 100 to 200 DEG C with pH of 5 to 10. The catalyst of the invention can decompose water-soluble organic pollutant containing chlorine and sulfur, water-soluble organic pollutant of azo, xanthene, and anthraquinone type, and biological contaminant microcystic toxins generated by harmful algal bloom.

Compositions derived from Rheum palmatum are provided. Also provided are methods of using said extracts to induce apoptosis in specific cells, especially in a human. Provided as well are uses of the extracts of Rheum palmatum for the preparation of a medicament for the selective induction of apoptosis

A method for regenerating used supported noble metal catalysts, which method includes solvent cleaning the used catalyst by contact with a suitable organic liquid cleaning solvent such as alcohols, ketones and such to remove organic deposits from the catalyst, followed by drying and calcining at elevated temperature to remove any remaining organic deposits from the catalyst, then treating the catalyst with an organo-metallic complex forming agent having ionization constant pK1 greater than about 2.5, such as glycolic acid and the like. The organic-metallic complex forming agent acts to break down large clusters of noble metal particles such as palladium (Pd) and redistributes the metal particles on the catalyst support such as alumina (Al2O3) in the same or other larger pores, so as to increase catalyst surface area and catalytic activity to provide a catalytic activity level at least 80% or even exceeding that of the fresh catalyst. This regeneration method is particularly useful for regenerating used supported palladium catalysts utilized for hydrogenation of ethyl anthraquinone (EAQ) for producing hydrogen peroxide (H2O2) product.

A method for regenerating spent supported metal catalysts comprising treating the spent catalyst with an organo-metallic complex forming agent having an ionization constant pK1 of at least 2.5. The catalyst activity is restored to an activity level near to or greater than the fresh catalyst. The regeneration method is particularly useful for regenerating spent palladium catalysts on an alumina support as utilized for the hydrogenation of ethyl anthraquinone (EAQ) in the production of hydrogen peroxide.

The invention relates to a bacillus pumilus (Bacillus pumilus) L-9 laccase gene cotA as well as recombinant expression and application thereof, belonging to the field of bioengineering. The cotA is separated from the bacillus pumilus (Bacillus pumilus) L-9, an expression vector pColdII-cotA is constructed, and an escherichia coli expression strain BL21(DE3) is transformed to realize high-efficiency expression. The obtained recombinase laccase has the advantages of high alkaline environment resistance and high high-temperature resistance, has a good effect of discoloring azo dyes and anthraquinone dyes and has high application potential.

The invention relates to an extracting device for producing hydrogen peroxide by anthraquinone process and a method thereof; the device consists of a clarifying section 1, a filling section 2 and a settling section 3; the clarifying section 1, the filling section 2 and the settling section 3 are arranged sequentially from top to bottom; a heavy-phase distributor 11, a light-phase anti-backmixing filler 12 and a light-phase outlet 13 are arranged in the clarifying section 1; a gas distributor 8, a heavy-phase anti-backmixing filler 9, a light-phase distributor 10 and a heavy-phase outlet 7 are arranged in the settling section 3; the filling section 2 is internally composed of a plurality of packing boxes; the packing boxes are more than two plate-net ripple packing pieces and are interlaced mutually in 15-90 DEG along the direction of the ripple channel of two adjacent plate-net ripple pieces to overlap; the direction of the ripple channel of the plate-net ripple packing forms 15-75 DEG with the direction of the centre line of a packing extracting tower in vertical surface; the diameter of the packing box is less than the inner diameter of the tower of the filling section by 2-20mm; the height of the packing box is 50-300mm. the extracting device can intensify the transport process and improve extracting efficiency so as to reduce the height of transfer unit and save device investment.

The present invention belongs to the field of chemical technology and is especially one catalyst for anthraquinone hydrogenation process of preparing hydrogen peroxide and its preparation. The catalyst is obtained with some alloy and through active treatment with alkali solution and the alloy consists of Ni, Al and metal additive including one or several of Cr, Mo, W, Fe, Co, Cu and Zn. The catalyst is one kind of amorphous skeleton alloy catalyst prepared through high temperature melting of metal components, quenching stress to obtain alloy strip or scaly alloy, grinding, sieving and activation in alkali solution. Compared with traditional Raney Ni catalyst, the said catalyst has high anthraquinone hydrogenation activity and high selectivity.

The invention relates to a pharmaceutical preparation for fat-reducing and relaxing bowl, its preparing process and quality control method, wherein the preparation is made mainly from cassia seed, prepared rhubarb, sea tangle and chebula fruit through steps of disintegrating rhubarb horsetails, extracting other medicinal materials through ethanol backflow, concentrating, drying, collecting concrete powder, and mixing with rhubarb horsetails fines homogeneously to obtain clinically acceptable preparations. The quality control index of the composition is anthraquinones, whose content in unit preparation of 100g should be no lower than 300mg.

The invention discloses a method for plating a layer of metallic nickel or nanometer nickel powder onto the surface of iron powder through a hydrothermal reduction technology, which belongs to the technical field of non-ferrous metallurgy and powder metallurgical material. The method comprises the following steps: adding nickel sulfate or nickel sulfate aqueous solution, ammonia water and ammonia sulphate into water according to the certain proportion to prepare mixed solution; adding a small amount of anthraquinone and additive into the mixed solution; then adding the iron powder to be plated by nickel into the mixed solution, shifting the mixed solution containing the iron powder into an autoclave, and sealing the autoclave; carrying out the hydrogen reduction treatment through applying high temperature and pressure to the aqueous solution; forming the compact metallic nickel layer or nanometer nickel powder plating layer through the nickel ions reduced and precipitated onto the surface of the iron power in the solution; and when the plating reaction is completed, cooling down the materials in the autoclave, discharging the iron powder with the surface plated by metallic nickel and the aqueous solution, and obtaining the iron powder product with the surfaced plated by metallic nickel after filtration and drying. The method has a simple production method, easy operation and the controllable plated nickel layer.

Pigment dispersants comprise compounds represented by the following formula (I) or (II) or metal, ammonium or amine salts thereof wherein X1 is a hydrogen or halogen atom or an alkyl or acylamino group, Y1 is an anthraquinonylamino, phenylamino, naphthylamino or phenoxy group, each of R1 and R3 is a hydrogen atom or a substituted or unsubstituted alkyl or phenyl group, R2 is a substituted or unsubstituted alkylene, phenylene or naphthylene group, X2 is a hydrogen or halogen atom or a substituted or unsubstituted alkyl group, R4 is a substituted or unsubstituted phenyl or naphthyl group, and n means an average number of sulfonic acid groups introduced in said compound and stands for a number of from 0.5 to 2. Pigment compositions, such as colorants for gravure inks, paints or color filters, comprise pigments and the pigment dispersants.

The invention relates to hydroxy anthraquinone derivatives and their use in preparing anti-cancer medicament, test has shown that the hydroxy anthraquinone derivatives have appreciable inhibitory action for various tumor cell strains, thus can be used in preparing cancer treatment medicament. The chemical structural formula of the hydroxy anthraquinone derivatives is shown by I, wherein R1, R2,R3 are defined in the description.

The invention provides a process for producing hydrogen peroxide by using an anthraquinone method. The process includes the following steps: hydrogen is added in the anthraquinone to generate anthrahydroquinone which is oxidized to generate the anthraquinone and the hydrogen peroxide. The reaction in which the hydrogen is added in the anthraquinone to generate anthrahydroquinone means that working fluid with the anthraquinone and the hydrogen are led in a fixed bed reactor which is filled with catalyst with the hydrogen so that hydrogenation is generated between the working fluid with the anthraquinone and the hydrogen to generate the anthrahydroquinone under the effect of the catalyst; the obtained hydrogenated working fluid with the anthrahydroquinone is conducted out of an oxidation device, wherein, when the working fluid with the anthrahydroquinone and the hydrogen are conducted in the fixed bed reactor, the working fluid is continuous phase, in which the hydrogen is distributed in the form of bubbles; when the working fluid with the anthrahydroquinone and the hydrogen are conducted in the fixed bed reactor, a feeding inlet is made not higher than a discharging outlet where the hydrogenated liquid is discharged out of the fixed bed reactor. By using the method, utilization efficiency of the catalyst as well as the production capability of the reactor is promoted and bed resistance is reduced.

The invention discloses an anthraquinone functionalized polyvinylidene fluoride membrane as well as a preparation method and an application thereof. By means of the characteristic that a polyvinylidene fluoride membrane material can enrich free radicals on the surface under high-energy radiation of ultraviolet light and has a grafting reaction easily, an anthraquinone compound is immobilized on polyvinylidene fluoride under the ultraviolet radiation condition through three steps including preparation of the polyvinylidene fluoride membrane, membrane preprocessing and ultraviolet grafting of the polyvinylidene fluoride membrane, so that the problem that an anthraquinone substance falls off and loses easily from a carrier in a conventional immobilizing method is effectively solved. The modified polyvinylidene fluoride membrane can effectively promote degradation of high-concentration nitrogen-containing wastewater, especially degradation of printing and dyeing wastewater, and has good application prospect in the field of sewage treatment.

Liquid crystal polycarbonates are made by forming a reaction mixture containing (a) an activated diaryl carbonate; (b) at least two species of aromatic diols selected from among resorcinol, 4,4′-biphenol, hydroquinone, methylhydroquinone, 4,4′-dihydroxyphenylether, dihydroxynaphthalene, including in particular the 2,6, 1,5, and 2,7 isomers, 4,4′-dihydroxybenzophenone and 2,6-dihydroxyanthraquinone (anthraflavic acid); and (c) optionally bisphenol A in a maximum amount of 10 mole %; and processing the reaction mixture in a melt transesterification reaction to form a liquid crystal polycarbonate. While the product composition has the same overall characteristics as compositions made using diphenyl carbonate as the donor moiety for the carbonate linkage, they are analytically distinguishable because of limited incorporation of intermediate or end-cap residues derived from the activated diaryl carbonate.

The present invention belongs to the field of effective Chinese medicine component extracting technology, and is especially supercritical CO2 extraction process of total rhubarb anthraquinone. Rhubarb powder through or through no acid solution treatment is soaked in alcohol or other solvent and extracted in a extracting reactor with supercritical CO2 as extractant and alcohol as entrainer and solvent at pressure of 20-60 Mpa and temperature of 30-60 deg.c for 0.5-3 hr. The extracted matter is decompression separated in a separating tank at 15-45 deg.c, and alcohol solution of total rhubarb anthraquinone is collected and decompression concentrated and dried to obtain total rhubarb anthraquinone.

The invention relates to preparation of a master batch for a low-melting-point polyester colored fiber. The low-melting-point polyester master batch provided by the invention comprises the following components in parts by weight: 60-88 parts of low-melting-point polyester, 5-20 parts of polyamide wax, 5-30 parts of pigment and 0.1-0.3 part of stabilizer, wherein the melting point of the low-melting-point polyester is 100-160 DEG C; the polyamide wax is solid micropowder of which the particle size is no more than 5 micrometers; the pigment is carbon black, azo pigment, anthraquinone pigment or polycyclic pigment; and the stabilizer is a compound comprising 50wt% of IRGAFOS168 and 50wt% of IRGANOX1010. The invention is applicable to preparation of a low-melting-point polyester colored fiber.

The invention provides a preparation method of a regenerator for preparing hydrogen peroxide by an anthraquinone process, which comprises the following steps: adding a dilute acid solution into aluminum oxide powder, uniformly mixing and making a strip; drying at room temperature in the shade, and roasting at 600-900k for 3-5 hours to obtain a strip carrier; and impregnating the strip carrier in a sodium hydroxide solution, taking out, and drying. The regenerator has excellent properties, all indexes achieve or exceed the original active regenerator, and the preparation technique is simple, scientific and reasonable and can satisfy the industrial requirements.

The invention discloses a preparation method of a polypyrrole functional mediator doped with a water-soluble anthraquinone or naphthoquinone compound and application thereof. Specifically, the preparation method comprises: (1) preparing a polymerization solution: firstly preparing a saturated solution of the water-soluble anthraquinone or naphthoquinone compound, then adding 0.33-0.67mL of pyrrole to every 100mL of the saturated solution and mixing well; (2) pretreating active carbon felt and platinum plate electrodes; (3) embedding the pretreated platinum plate electrodes in step (2) into the active carbon felt, then conducting electrochemical polymerization in the polymerization solution, with a polymerization potential of 0.30-0.50V, a polymerization time of 1-3h and a potential changerate of 0.03-0.07V/s. The polypyrrole functional mediator provided in the invention plays an accelerating role in a microorganism denitrification process, and is recyclable and free of secondary pollution.

A method of producing fine particles of an anthraquinone structure-containing pigment, including mixing a solution of an anthraquinone structure-containing pigment dissolved in a good solvent with a solvent that is compatible with the good solvent but is a poor solvent for the pigment, to form fine particles of nanometer-sized anthraquinone structure-containing pigments; fine particles of an anthraquinone structure-containing pigment produced by the same; a colored pigment dispersion composition, colored photosensitive resin composition and photosensitive resin transfer material each having the same; and a color filter and a liquid crystal display device using the same.

The invention discloses a highly dispersed palladium/carbon nanometer tube catalyst for anthraquinone hydrogenation and a preparation method thereof, and relates to a catalyst and a preparation method. According to the invention, a carbon nanometer tube industrial product with good conductivity, heat conductivity, high mechanical strength and huge external specific surface is used as a palladium carrier; simultaneously ultrasonic is utilized to further enhance the dispersity and uniformity of palladium and the carbon nanometer tube; and a nanometer palladium catalyst uniformly loaded on the surface of the carbon nanometer tube is prepared in a slurry reactor by adopting a liquid phase reduction method. The catalyst needs no extrusion molding and can be directly suspended in the liquid phase for normal-pressure or pressurized hydrogenation of anthraquinone; the activity of the catalyst is not reduced after the catalyst is used for a plurality of times by filtration and separation; moisture, acid and alkaline do not influence the use effect; the catalytic activity of the new catalyst is 4-8 times higher than that of the traditional Pd/gamma-Al2O3 catalyst, and the amount of the catalyst used can be greatly reduced. The catalyst can be used for replacing the traditional catalyst, the post treatment of the traditional catalyst is simplified, the treatment capability of a device is greatly increased, and the operation cost is lowered.

The invention belongs to the field of water treatment, and relates to the field of treatment of pollutant-containing wastewater, in particular to a preparation method and application of an anthraquinone compound modified hydrophilic carrier. Inorganic filler, plastic and other carriers subjected to hydrophilic treatment react with an epoxy silane coupling agent to obtain an epoxy modified carrier,then an epoxy group and an amino-containing anthraquinone compound are used for reacting with an amino-terminated polyethylene glycol, and an anthraquinone compound and polyethylene glycol modified carrier is obtained, wherein the anthraquinone compound accelerates biodegradation of azo dyes, nitrate and the like, and the hydrophilicity of the polyethylene glycol can improve the compatibility ofthe carrier and the water containing the azo dyes, the nitrate and the like, so that the performance of the anthraquinone compound is further improved. The obtained anthraquinone compound modified hydrophilic carrier can be widely applied to sewage treatment.