11 results about "Hydroxyanthraquinone" patented technology

The invention relates to viologen-anthraquinone composite electrochromic liquid and a preparation method thereof, the viologen-anthraquinone composite electrochromic liquid comprises 1.2-2.5 parts by mole of viologen salt, 0.8-1.5 parts by mole of anthraquinone derivative and 8-12 parts by mole of electrolyte; the viologen salt is ethyl viologen tetrafluoroborate or heptyl viologen tetrafluoroborate or octyl viologen tetrafluoroborate; the anthraquinone derivative is 1-ethylamino-4-hydroxy anthraquinone or acid blue 43; the preparation method comprises the following steps: preparing an electrolyte solution; adding purple refined salt and anthraquinone derivatives according to the formula; fully dissolving the electrochromic material to form uniform and transparent initial liquid; and degassing the initial liquid to remove oxygen dissolved in the initial liquid. The electrochromic liquid has the advantages that after the purple refined salt and the anthraquinone derivative are added into the dissolving solution according to the proportion of the formula, the two color-changing materials are jointly dissolved in the electrolyte, and when the two color-changing materials are reduced at the same time, spectrum superposition absorbed by the two color-changing materials can cover the whole visible region, so that black and white switching of the electrochromic liquid is realized, and the use effect is good.

The invention discloses preparation and application of a nano enzyme. The preparation method of the nano enzyme comprises the following steps: dissolving copper salt and hydroxy anthraquinone carboxylic acid in water to obtain a first solution; adjusting the pH of the first solution to be alkaline, and heating for reaction to obtain a product solution; and centrifuging the product solution, taking the precipitate, washing and drying to obtain the Cu nano-enzyme. The copper salt comprises at least one of copper sulfate, copper chloride, copper nitrate and copper hydroxide; the hydroxy anthraquinone carboxylic acid is rhein. According to the invention, Cu is used as a transition metal source and reacts with specific hydroxy anthraquinone carboxylic acid to prepare the Cu nano-enzyme (Cu-Rhein) with excellent peroxidase-like activity. The Cu nano enzyme can be applied to promotion of hydrogen peroxide oxidation TMB color development and detection of penicillamine, the accuracy of penicillamine detection is high, and the Cu nano enzyme has good application prospects.

This invention relates to the field of biomedicine, specifically to the application of banana fruit extract in the preparation of anticoagulant or antithrombotic drugs. The banana fruit extract provided by this invention contains flavonoids, polyphenols, polysaccharides, hydroxyanthraquinones, triterpenoids, and other components. Flavonoids and polyphenols have been widely proven to have anti-inflammatory and antioxidant effects, which can synergistically enhance the anticoagulant effect. The high potassium content of banana fruit can indirectly improve vascular function by regulating sodium-potassium balance. The banana fruit extract provided by this invention can inhibit platelet production or promote platelet metabolism, prolong clotting time, and inhibit platelet aggregation. Its natural plant components interfere with platelet aggregation by inhibiting the production of thromboxane A2, achieving anticoagulant and antithrombotic effects. The mechanism of action of banana fruit extract differs from traditional anticoagulants such as heparin, reducing the risk of bleeding. Its natural component characteristics provide a direction for the development of novel plant-derived anticoagulant drugs.

The utility model provides a 1, 4-dihydroxy anthraquinone washing and drying device which comprises a supporting plate, and an open type drying machine is installed on the supporting plate. According to the 1, 4-dihydroxy anthraquinone washing and drying device, 1, 4-dihydroxy anthraquinone is filtered and collected in a collecting frame through a filter screen, waste water flows into a purifying pond, a first servo motor is controlled to rotate anticlockwise, then the collecting frame is driven to turn over, the collecting frame is inversely buckled above an open type drying machine, and the 1, 4-dihydroxy anthraquinone collected in the collecting frame is recycled. 1, 4-dihydroxy anthraquinone falls into the open type dryer, then the open type dryer is started, the 1, 4-dihydroxy anthraquinone can be rapidly dried, the 1, 4-dihydroxy anthraquinone adhered to the collecting frame and the filter screen is dried, then the vibration motor is started to vibrate the adhered 1, 4-dihydroxy anthraquinone into the open type dryer, and then the dried 1, 4-dihydroxy anthraquinone is collected. The utility model discloses 2, 4-dihydroxy anthraquinone.

A protective film substance for laser processing includes a solution including a water-soluble resin, an organic solvent, and a light absorbent. The solution has an absorbance, i.e., an absorbance converted for a solution diluted 200 times, equal to 0.05 or more per an optical path length of 1 cm at a wavelength of 532 nm. Alternatively, the protective film substance for laser processing includes a solution including a water-soluble resin, an organic solvent, and a polyhydroxyanthraquinone derivative.

The invention belongs to the technical field of polyurethane, and particularly relates to large-aperture biocompatible polyurethane sponge as well as a preparation method and application thereof. The large-aperture biocompatible polyurethane sponge is prepared by soaking a component A and a component B, wherein the component A comprises polyether polyol X, polyether polyol Y, a chain extender, a catalyst, a pore opening agent and a foaming agent; wherein the component B is prepared from modified MDI and liquefied MDI; the polyether polyol X is prepared by taking hydroxy anthraquinone and low-molecular-weight polyether polyol as a composite initiator and epoxypropane as a polymerization monomer; the average functionality of the polyether polyol Y is 3 to 4, and the number-average molecular weight of the polyether polyol Y is 4000 to 7000 g / mol. The large-aperture biocompatibility polyurethane sponge provided by the invention is large in aperture and strong in biocompatibility. The preparation method is simple in process and safe to operate. The prepared polyurethane sponge is used for sewage treatment, and the degradation rate of microorganisms is increased.

The utility model relates to the field of dye proportioning, and discloses a 1, 4-dihydroxy anthraquinone raw material accurate proportioning device which comprises a mixing tank for mixing dihydroxy anthraquinone, a bottom plate and a proportioning mechanism, the bottom plate is provided with a mixing tank, the top of the mixing tank is provided with a proportioning mechanism, the mixing tank is fixedly provided with a control panel, and the proportioning mechanism is connected with the control panel; the proportioning mechanism comprises a plurality of storage boxes, a feeding roller, an adjusting block, a circular plate, a threaded rod, a rotating plate, a motor, a sealing ring and a guide plate, and the plurality of storage boxes are fixedly mounted at the top of the mixing tank. The quantitative feeding device has the following advantages and effects that the effect of automatically and quantitatively adding raw materials can be achieved through cooperation of all the components, then the effect of accurately proportioning the 1.4 dihydroxy anthraquinone raw materials is achieved, and the effect of adjusting the sizes of the three quantitative grooves according to the requirements of a user can be achieved.

The application discloses a kind of targeted nano photosensitizer carrier and its preparation method and application, it is related to photosensitizer carrier technical field, the preparation method of the targeted nano photosensitizer carrier is as follows: after 4-carboxyl phenylboronic acid is activated, drop into the methanol solution of polyethyleneimine, phenylboronic acid modified polyethyleneimine is obtained by reaction;It is dissolved in phosphate buffer solution, drop into the methanol solution of 1,2,4-trihydroxy anthraquinone, and avoid light reaction to obtain anthraquinone-boronate modified polyethyleneimine;It is activated and reacted with folic acid solution, and is obtained;The targeted nano photosensitizer carrier prepared can stably load photosensitizer containing aromatic ring structure, realizes light-controlled release and pH response, can also specifically recognize tumor cells with high expression of folic acid receptor, and has wide application prospect in the field of photodynamic therapy.

This invention discloses a high-efficiency dehydration device for dihydroxyanthraquinone, comprising a reaction vessel, a control box fixedly mounted on one side of the reaction vessel, a motor fixedly mounted on the top of the reaction vessel, a stirring rod fixedly mounted at the output end of the motor, and an addition mechanism for convenient quantitative addition of materials at the top of the reaction vessel. The addition mechanism includes a storage component, an electronic scale, a support plate, a collection box, an injection pipe, and a first solenoid valve. In use, the storage component pours dry-based sulfonic acid resin into the collection box, while the electronic scale weighs the resin until the desired weight is reached. At this point, the first solenoid valve opens, allowing the dry-based sulfonic acid resin in the collection box to be injected into the reaction vessel through the injection pipe. This utilizes the dry-based sulfonic acid resin to absorb moisture, thereby reducing the amount of sulfuric acid used and further reducing the amount of acidic wastewater, thus saving resources. Simultaneously, the electronic scale allows for convenient control of the amount of dry-based sulfonic acid resin added.

The present application relates to the technical field of dyes, in particular to a high-weather-resistance washable macromolecular dye. The high-weather-resistance washable macromolecular dye is prepared by condensation reaction of 1-amino-2-bromo-4-hydroxy-9,10-anthraquinone and polyethylene glycol under alkaline conditions based on the hydrophilicity of polyether chain and the stability of anthraquinone skeleton. The prepared high-weather-resistance washable macromolecular dye has the characteristics of bright color, easy washing, good light resistance and strong oxidation resistance, and has a wide range of applications, especially for educational ink and daily chemical products.

The utility model belongs to the technical field of production of chemical intermediates, and particularly discloses a system for recovering phthalic anhydride from 1, 4-dihydroxy anthraquinone production mother liquor, which comprises a flocculent precipitation system, a hot melting neutralization system and a crystallization separation system, the flocculation precipitation system comprises a mother liquor cooling kettle and a first filter press, the hot dissolution neutralization system comprises a hot dissolution kettle and a second filter press, the crystallization separation system comprises a crystallization kettle, a centrifugal machine and a drying machine, the input end of the crystallization kettle is communicated with a sulfuric acid feeding tank, the output end of the crystallization kettle is communicated with the centrifugal machine, and the material output end of the centrifugal machine is communicated with the input end of the drying machine. The output end of the dryer communicates with a finished product collecting tank; the filter cake output end of the first filter press is communicated with the input end of the hot dissolving kettle, and the filtrate output end of the second filter press is communicated with the input end of the crystallization kettle. According to the device disclosed by the utility model, the phthalic anhydride is recycled after decoloring and flocculating, neutralizing and dissolving, crystallizing and separating the phthalic anhydride, centrifuging and drying in sequence, so that the phthalic anhydride in the mother liquor is prevented from being wasted.