Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

152 results about "Hydroxynaphthalenes" patented technology

Preparation method of permanent red pigment for acid and alkali resistant coating

The invention discloses a preparation method of a permanent red pigment for an acid and alkali resistant coating, and belongs to the technical field of pigment preparation, a 2B acid derivative is diazotized and then coupled with 2-hydroxy-3-naphthoic acid, then a calcium chloride aqueous solution is added for color lake to obtain pigment particles, and finally the surfaces of the pigment particles are coated with silicon dioxide to obtain the permanent red pigment for the acid and alkali resistant coating. According to the permanent red pigment for the acid and alkali resistant coating prepared by the preparation method disclosed by the invention, the acid and alkali resistance and environmental stability of the pigment are further enhanced while the excellent characteristics of original pigment red 48: 2 are maintained, and the application performance of the pigment is remarkably improved.
Owner:PENGLAI XINGUANG PIGMENT CHEM

Polyarylester nanofiber and preparation method thereof

The invention provides a polyarylester nanofiber and a preparation method thereof, and the preparation method comprises the following steps: firstly, carrying out acetylation reaction on 4-hydroxybenzoic acid (HBA) and 6-hydroxy-2-naphthoic acid (HNA) to obtain acetylated HBA and acetylated HNA, and then carrying out copolymerization on acetylated HBA and acetylated HNA and 4-hydroxybutyric acid (GHB) to obtain HBA / GSB / HNA copolymerized arylester granules B; the preparation method comprises the following steps: carrying out blending spinning on granules B and HBA / HNA copolymerized aromatic ester granules A obtained by copolymerizing acetylated HBA and acetylated HNA in the prior art, putting the obtained blended polyarylate fibers into an organic solvent containing a strong base, carrying out chemical etching and deprotonation, carrying out disassembly from top to bottom to obtain a polyarylate nanofiber suspension, and finally carrying out suction filtration and drying to obtain the polyarylate nanofibers. According to the preparation method disclosed by the invention, the blended polyarylester fiber containing an aliphatic chain is subjected to etching and deprotonation treatment through strong base to disassemble the polyarylester nanofiber, and a certain amount of-CH2-structure is introduced into a main chain, so that disassembly preparation of the nanofiber is facilitated, and the polyarylester nanofiber with uniform diameter and length and controllable length-diameter ratio is obtained.
Owner:DONGHUA UNIV

Polyester as well as preparation method and application thereof

PendingCN121914377ABenzoic acidPolyester
The invention provides polyester and a preparation method and application thereof, the polyester comprises a structural unit derived from the following monomer components: at least one monomer component I selected from hydroxybenzoic acid or hydroxynaphthoic acid; and at least one monomer component II, wherein the monomer component II is selected from p-hydroxybenzoic acid containing a substituent group. A small amount of the monomer component II is introduced into the polyester material, interaction points are provided for chain segments of the polymer, the chain segments are promoted to form a branched structure, and therefore the melt strength of the polymer is well improved.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Method for preparing high molecular weight thermotropic liquid crystal polyester through melt coupling solid phase polycondensation

PendingCN120082022APolyesterBenzoic acid
The invention discloses a method for preparing high molecular weight thermotropic liquid crystal polyester through melt coupling solid phase polycondensation. The method comprises the following steps: mixing p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid and a catalyst 1-methylimidazole according to a specific molar ratio of (70-75): (25-30) to synthesize a liquid crystal polyester prepolymer with specific logarithmic viscosity; the preparation method comprises the following steps: crushing and drying a liquid crystal polyester prepolymer, placing prepolymer particles in a solid phase polycondensation device, accurately controlling the time and temperature of the polycondensation reaction, carrying out heating reaction in a nitrogen atmosphere to obtain high molecular weight thermotropic liquid crystal polyester, taking out the high molecular weight liquid crystal polyester, and carrying out viscosity test. In the preparation process of the prepolymer, the prepolymer with proper logarithmic viscosity can be effectively prepared by controlling the reaction temperature and time, so that the controllable preparation of the polymer is realized; the solid-phase polycondensation time required for obtaining the high-molecular-weight polymer is shortened by crushing the prepolymer into particles with different diameters, so that the solid-phase polycondensation efficiency is improved.
Owner:EAST CHINA UNIV OF SCI & TECH

Preparation method of givelastat intermediate

The invention relates to the technical field of chemical intermediates, and particularly discloses a preparation method of a givelastat intermediate.According to the preparation method, an initiator compound 5 can be synthesized by adopting cheap 2-hydroxy-6-naphthoic acid (CAS: 16712-64-4, 141 yuan / kg), and the preparation method is different from a method in the prior art. A gemvelastat intermediate compound 4 is synthesized from a compound 5 through a three-step reaction, compared with the prior art, the yield is high, industrial amplification production is more facilitated, in the process of synthesizing a compound 6 from the compound 5, acetonitrile can be adopted as a cyanide source in a reaction system, activated hydroxyl is subjected to a coupling reaction, and the yield is high. In the process of synthesizing a compound 6 from a compound 7 instead of a traditional metal cyanide, or in the process of synthesizing a compound 6 from another compound 5, a cheap cuprous cyanide and cuprous iodide system is adopted for a coupling reaction, and in the process of synthesizing a compound 4 from a compound 7, an acetic acid and sodium triacetoxyborohydride reaction system is adopted, so that the compound 6 is synthesized. And the important intermediate of the givelastat can be obtained with high yield.
Owner:SUZHOU HUAXIAN PHARM TECH CO LTD

Cool-feeling breathable fiber and preparation method thereof

The invention discloses a cool breathable fiber and a preparation method thereof, and relates to the field of fibers. When the cool-feeling breathable fiber is prepared, shell powder sequentially reacts with 3-chloropropyltrimethoxysilane, 2, 6-dihydroxy naphthol and 3, 3-diphenyl-2-propyne-1-alcohol, and functionalized shell powder is prepared; the preparation method comprises the following steps: reacting (formylmethyl) diethyl phosphate with (4-pyridyl) acetone, firstly polymerizing with dimethyl terephthalate and ethylene glycol, and then reacting with N-[4-(aminomethyl) phenyl] guanidine to prepare modified polyester; and finally, mixing the modified polyester, the functionalized shell powder and zinc acetate, and spinning to obtain the cool breathable fiber. The cool breathable fiber prepared by the invention has flame-retardant, durable and antibacterial capabilities.
Owner:NANTONG DEKA TEXTILE TECH CO LTD

Chemically amplified positive resist composition and resist pattern forming method

To provide a chemically amplified positive resist composition that can give a resist film which has extremely high isolated space resolution, small LER, excellent rectangularity, and on which formation of a resist pattern with suppressed etching resistance or pattern collapse is possible, and a resist pattern forming method using the chemically amplified positive resist composition.SOLUTION: A chemically amplified positive resist composition contains: (A) a base polymer which includes a repeating unit derived from hydroxystyrene or hydroxynaphthalene and a repeating unit derived from hydroxystyrene in which a hydroxy group is protected by acid-labile group or hydroxynaphthalene in which a hydroxy group is protected by acid-labile group, and in which dissolubility to alkali aqueous solution increases by acid action, and a dispersion degree is 1.0 to 1.19; (B) photo-acid generator expressed by the following formula (B); and (C) organic solvent.SELECTED DRAWING: None
Owner:SHIN ETSU CHEMICAL CO LTD

Fluorescent probe for detecting hypochlorous acid as well as preparation method and application of fluorescent probe

The invention relates to a fluorescent probe for hypochlorous acid detection and a preparation method and application thereof, the chemical name of the fluorescent probe for hypochlorous acid detection is 5-butyl-10, 10-difluoro-9-(4-(methylthio) phenyl)-5-hydro-4H, 10H-9 lambda 4, 10 lambda 4-benzo [de] [1, 3, 2] oxazaboraza [6, 5-g] isoquinoline-4, 6-diketone, and the structural formula of the fluorescent probe for hypochlorous acid detection is as shown in the following formula I. The invention further discloses a preparation method of the fluorescent probe for hypochlorous acid detection. According to the fluorescent probe for hypochlorous acid detection, N-butyl-3-aldehyde-4-hydroxy-1, 8-naphthalimide and (E)-2-butyl-6-hydroxy-5-(((4-(methylthio) phenyl) imino) methyl)-1H-benzo [de] isoquinoline-1, 3 (2H)-diketone are used as raw materials, and the fluorescent probe can be used for detecting hypochlorous acid. Compared with the prior art, the fluorescent probe for hypochlorous acid detection is simple and convenient in synthesis method, simple and easily available in raw materials, good in hypochlorous acid selectivity, relatively high in sensitivity and large in Stokes shift, and has a very good application prospect in hypochlorous acid detection.
Owner:SHANGHAI BAIAOXIN TECHNOLOGY CO LTD

Cariprazine Medicinal Salt and Its Crystal Forms, Pharmaceutical Composition, Preparation Method and Use

The present invention provides 1-hydroxy-2-naphthoate or pamoate of cariprazine, and / or its new solid forms, as well as its pharmaceutical compositions, preparation methods and uses. The salts and solid forms of cariprazine provided by the present invention, especially cariprazine 1-hydroxy-2-naphthoate among the poorly soluble salts of cariprazine, conform to the advantages of long-acting sustained-release preparations, can be developed into suspension injections, and at the same time can overcome the risks of dissociation of existing salt forms such as cariprazine hydrochloride or the problem of not having a sustained-release effect, can achieve the effect of long-term drug administration, and greatly improve the compliance of patients as well as the bioavailability and drug safety of the drug.
Owner:SHANGHAI BOCIMED PHARMA CO LTD +2

Preparation method of pigment for low-oil-absorption pigment red 57: 1 printing ink

ActiveCN119823592AMonoazo dyesDye lakesIonic liquidPolymer
The invention discloses a preparation method of a pigment for low-oil-absorption pigment red 57: 1 printing ink, and belongs to the technical field of pigment synthesis. 4-aminotoluene-3-sulfonic acid is diazotized and then coupled with 3-hydroxy-2-naphthoic acid, a carboxyl-terminated hyperbranched polymer and an ionic liquid are added into a pigment crude product compound obtained after the coupling reaction is completed, and the pigment for low-oil-absorption pigment red 57: 1 printing ink is obtained. And finally adding a calcium chloride aqueous solution for color lake. The pigment for low-oil-absorption pigment red 57: 1 printing ink, prepared by the invention, not only has lower oil absorption, but also has the advantages of strong tinting strength, easiness in dispersion and high stability, and has good processing and application performance.
Owner:PENGLAI XINGUANG PIGMENT CHEM

Polyphenyl ether resin composition, polyphenyl ether composite material and preparation method and application thereof

The invention discloses a polyphenyl ether resin composition, a polyphenyl ether composite material and a preparation method and application thereof. The polyphenyl ether resin composition is obtained by reacting polyphenyl ether and naphthoic acid compounds in a melt, the polyphenyl ether has a repeating unit with the following structure: R1, R2, R3 and R4 are respectively and independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, halogenated alkyl, alkoxy or halogenated alkoxy; the naphthoic acid compound is at least one of naphthoic acid or hydroxyl naphthoic acid. Compared with polyphenyl ether resin, the polyphenyl ether resin not only can improve the gas barrier property of the polyphenyl ether composite material in a melt, but also can improve the high-temperature injection molding processing stability of the polyphenyl ether composite material.
Owner:KINGFA SCI & TECH CO LTD

A preparation method of CI Pigment Orange 68

ActiveCN117924961BOrganic chemistryDiazomethine dyesSodium acetateHydroxy group
The present invention provides a method for preparing CI Pigment Orange 68, belonging to the technical field of pigment preparation. 2-hydroxy-1-naphthaldehyde and 5,6-diaminobenzimidazolone are subjected to a condensation reaction in an acidic environment to prepare a Schiff base. The prepared Schiff base is subjected to a complexation reaction with nickel chloride and sodium acetate in an acidic environment. After the complexation reaction is completed, CI Pigment Orange 68 is obtained through post-processing. Compared with the prior art, this method not only avoids the use of the toxic solvent DMF, but also reduces the temperature required for the reaction, can reduce the output of organic waste liquid, has low cost, is environmentally friendly, and is safe to operate. The prepared CI Pigment Orange 68 has excellent properties such as high hue saturation, high transparency, bright color, strong hydrophilicity, and good dispersion stability.
Owner:DEZHOU UNIV

Preparation method and application of pure purple light oxygen-doped carbon quantum rings with 18 nm half-peak width and quantum yield close to 100%

The present application relates to the field of fluorescent carbon nanomaterials, in particular to a method for preparing pure purple light oxygen-doped carbon quantum rings with a half-peak width of 18 nm and a quantum yield close to 100% and applications thereof. The present application uses 2,3-dihydroxynaphthalene as a carbon source precursor, and prepares narrow-band purple light carbon quantum rings with a quantum yield close to 100% through a solid-phase catalytic reaction. The carbon quantum rings prepared by the present application have a hexagonal ring structure with oxygen doping, and have a wide application prospect in the field of display devices.
Owner:BEIJING NORMAL UNIVERSITY

A process for producing H acid by alkali fusion in an ammonia environment

The present invention relates to the technical field of H acid preparation, and in particular to a process for producing H acid by alkali fusion under an ammonia environment. Amino T acid generates a chromotropic acid byproduct during alkali fusion, and the chromotropic acid is the amino group of H acid replaced by a hydroxyl group. The hydroxyl group on the naphthalene ring can generate an amino group under the catalysis of sulfite, so the chromotropic acid generates H acid under an ammonia environment. In the present invention, alkali fusion under an ammonia environment can effectively inhibit the generation of chromotropic acid by the side reaction of alkali fusion, and improve the H acid yield. Based on amino T acid, the H acid yield can be increased to about 85%, effectively reducing the cost.
Owner:SHANDONG CHUANGLAN YAOSHI ENVIRONMENTAL PROTECTION TECH CO LTD

Purification method of high-purity electronic-grade photoacid generator of (4, 7-dihydroxy-1-naphthyl) dimethyl sulfonium trifluoromethanesulfonate

The invention provides a purification method of a high-purity electronic-grade photoacid generator derived from (4, 7-dihydroxy-1-naphthyl) dimethyl sulfonium trifluoromethanesulfonate. The problem that photo-acid cannot be purified by traditional recrystallization or directly through an ion exchange column and the like is solved, and the electronic grade standard is achieved. The preparation method comprises the following steps: firstly synthesizing (4, 8-dihydroxy-1-naphthyl) dimethyl sulfonium hydrochloride, then reacting with sodium trifluoromethanesulfonate to generate a crude product (4, 7-dihydroxy-1-naphthyl) dimethyl sulfonium trifluoromethanesulfonate, removing impurities from ethyl acetate, recrystallizing by using methanol and dichloromethane to obtain a pure product, and finally adsorbing by using resin to obtain the high-purity electronic-grade photoacid generator. According to the invention, the stability is high, the metal ion content is low, the purification process is convenient to process, the product is used as a photoresist-level core main material, the product is widely applied in the fields of semiconductor photoresist, other imaging systems, photocureable coatings and the like, the market scale is continuously expanded, and the product is an indispensable key material in semiconductor manufacturing and other related fields.
Owner:HUBEI SINOPHORUS ELECTRONIC MATERIALS CO LTD

2-succinyl-5-enolacetonyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase mutant and application thereof

The invention relates to a 2-succinyl-5-enol acetonyl-6-hydroxy-3-cyclohexene-1-carboxylic acid synthase mutant and application thereof, and belongs to the technical field of enzyme engineering. According to the invention, a key residue of 2-succinyl-5-enolacetonyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase is obtained by combining protein sequence comparison and alanine scanning strategies, the key residue is subjected to random mutation, and the menadione pathway resistant intermediate metabolite 1, 2, 3, 4-tetracarboxylic acid synthase is obtained through multiple rounds of screening. The mutant MenDW322IR323F which is subjected to feedback inhibition by using 2, 4-dihydroxy-2-naphthoic acid is synthesized, the heptaene menadione production capacity of the recombinant bacillus subtilis constructed according to the method is improved, the yield is 1.22 times that of a control strain, and the final yield reaches 186.5 mg / L. The invention not only provides a new direction for transformation of a menadione approach of bacillus subtilis, but also is beneficial to industrial expanded production of heptaene menadione.
Owner:JIANGNAN UNIV

Method for preparing hydroxyl naphthaldehyde derivative by using cobalt complex

The invention relates to a method for preparing a hydroxyl naphthaldehyde derivative by using a cobalt complex, which comprises the following step: by taking naphthol and paraformaldehyde as raw materials and the cobalt complex containing an ortho-carborane benzothiazole structure as a catalyst, reacting at room temperature to synthesize the hydroxyl naphthaldehyde derivative. Compared with the prior art, the cobalt complex containing the ortho-carborane benzothiazole structure is applied to the reaction for catalytically synthesizing the hydroxyl naphthaldehyde derivative through the one-pot method, the use equivalent of the catalyst is low, the reaction condition is mild, the substrate universality is high, and the yield is high.
Owner:SHANGHAI INST OF TECH

Synthesis of tetralin-1,4-dione, compositions and apparatuses thereof

PCT designated stage expiredWO2025122734A1Organic compound preparationHydroxy compound preparationDiketoneTetralin
A method of tautomerizing tetralin-1,4-dione from 1,4-dihydroxynaphthalene is described, which comprises vaporizing a liquid feedstock composition comprising tetralin-1,4-dione and 1,4-dihydroxynaphthalene, then solidifying the vapor to form a solid crude composition with an increased tetralin-1,4-dione concentration relative to the liquid feedstock composition. An apparatus for tautomerizing 1,4-dihydroxynaphthalene into tetralin-1,4-dione is also described, which apparatus includes a reaction vessel comprising an internal chamber and a cold plate disposed within the internal chamber.
Owner:TERECIRCUITS CORP

Solid conductive powder coating composition and preparation method thereof

The invention discloses a solid conductive powder coating composition and a preparation method thereof, and belongs to the technical field of powder coatings. The preparation method comprises the following steps: adding epoxy resin, modified fibers, modified graphene oxide, modified 1, 6-dihydroxynaphthalene, carbon black, 2-methylimidazole, a flatting agent and barium sulfate into a stirrer, mixing at a high speed of 300-400r / min for 5-10min, then putting the mixed material into a double-screw extruder for melt extrusion, tabletting, cooling, crushing and sieving to obtain the solid conductive powder coating composition. The solid conductive powder coating composition disclosed by the invention has good conductivity and also improves the corrosion resistance.
Owner:ZHENGZHOU UNIV

Europium functionalized metal-organic framework-based dual-emission fluorescent probe as well as preparation method and application thereof

The invention discloses a europium-functionalized metal-organic framework-based dual-emission fluorescent probe and a preparation method and application thereof, and relates to the field of organic metal frameworks and fluorescence detection.The preparation method comprises the steps that ZrCl4, pyromellitic acid, 6-hydroxy-2-naphthoic acid and water are mixed, acetic acid is added, and a mixture is obtained; heating and refluxing the mixture, centrifuging to obtain residues, washing and drying to obtain UCHNA; the preparation method comprises the following steps: dispersing UCHNA in an aqueous solution of Eu (NO3) 3.6 H2O, heating to react, collecting white precipitate, washing and drying to obtain the Eu (NO3) 3.6 H2O. The invention has the beneficial effects that the UiO-66 type MOF is modified by using the luminous ligand 6-hydroxy-2-naphthoic acid, post-modification is performed by using Eu < 3 + >, the Eu < 3 + >-MOF with dual emission of blue and red wavebands is reasonably designed and synthesized, crystal violet (CV) and quinine (QN) are selectively and quickly responded through different response modes, the detection limit is low, and the Eu < 3 + >-MOF is superior to most reported sensors.
Owner:HUBEI UNIV OF TECH

Thermoplastic liquid crystal polymer molded body, metal-clad laminate, and circuit board

In order to increase the total light transmittance while maintaining a high haze value of the thermoplastic liquid crystal polymer, a thermoplastic liquid crystal polymer molded body is produced with a haze value of 99% or more, a coefficient of thermal expansion of 16 to 27 ppm / °C, and a correlation between the absorption coefficient (ε) and the thickness (x) satisfying ε ≤ 0.21x<supgt;‑0.55< / supgt>. The thermoplastic liquid crystal polymer may be a polyester containing repeating units derived from a substance selected from the group consisting of p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid; 6-hydroxy-2-naphthoic acid, terephthalic acid, and p-aminophenol; p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, and terephthalic acid; 6-hydroxy-2-naphthoic acid, terephthalic acid, p-aminophenol, isophthalic acid, hydroquinone, and naphthalenedicarboxylic acid; and p-hydroxybenzoic acid, terephthalic acid, and 4,4'-dihydroxybiphenyl.
Owner:KURARAY CO LTD

Infrared barrier polyurethane coating and preparation method thereof

The invention discloses an infrared barrier polyurethane coating and a preparation method thereof, and relates to the technical field of coatings. When the infrared barrier polyurethane coating is prepared, 7-cyano-8-hydroxy-1, 6-naphthyridine and pent-4-enohydrazide are subjected to a reaction, and a pentenyl triazole monomer is prepared; polymerizing a pentenyl triazole monomer and hexenyl ethylene carbonate, and coating the cesium tungsten bronze powder with the polymerized pentenyl triazole monomer and hexenyl ethylene carbonate to prepare modified cesium tungsten bronze powder; reacting the cardanol diglycidyl ether with carbon dioxide to obtain cyclic carbonated cardanol; the cyclic carbonated cardanol, the modified cesium tungsten bronze powder, functional microspheres, cyclohexanone, isophorone diamine and 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane are uniformly mixed, and the infrared barrier polyurethane coating is prepared. The infrared barrier polyurethane coating prepared by the invention has excellent flame retardance, aging resistance and infrared barrier property.
Owner:JIANGSU PHASE CONTROL TECHNOLOGY CO LTD

An enzymatic serum albumin fluorescent probe and its synthesis and application

The present invention provides an enzymatic serum albumin fluorescent probe, a synthesis method, and an application thereof. The fluorescent probe has a structure represented by formula (I), and its preparation process is as follows: (1) 3-hydroxy-1,8-naphthylic anhydride and (S)-1-(4-pyridyl)ethylamine are added to an organic solvent, heated to reflux, and after the reaction is complete, an intermediate product represented by formula (II) is isolated; (2) the intermediate product represented by formula (II) and a base are added to an organic solvent, stirred in an ice-water bath until uniformly mixed, cyclopropylcarbonyl chloride is added dropwise, stirring is continued until the reaction terminates, and the enzymatic serum albumin fluorescent probe of the present invention is isolated. The fluorescent probe of the present invention has simple synthesis steps, high sensitivity, and good selectivity, and can achieve accurate quantification of HSA in serum and urine, and has good application prospects.
Owner:HEBEI UNIVERSITY

Manufacturing method for intermediate compound for shikonin synthesis

The method for manufacturing an intermediate compound for shikonin synthesis of the present invention comprises the steps of: reacting 1,5-dihydroxynaphthalene with dimethyl sulfate to prepare 1,5-dimethoxynaphthalene; reacting 1,5-dimethoxynaphthalene with N-bromosuccinimide (NBS) to prepare 1,5-dibromo -4,8-dimethoxynaphthalene; introducing a methoxy group into 1,5-dibromo-4,8-dimethoxynaphthalene using copper iodide (CuI) and 1,10-phenanthroline as a catalyst to prepare 1,4,5,8-tetramethoxynaphthalene; performing formylation of 1,4,5,8-tetramethoxynaphthalene using phosphoryl chloride (POCl3) to prepare 2-formyl-1,4,5,8-tetramethoxynaphthalene; and forming a boron complex using pinacolborane (HBpin) and 3,3-dimethylallyl bromide and reacting the boron complex with 2-formyl -1,4,5,8-tetramethoxynaphthalene to prepare a prenylated shikonin intermediate. Compared to conventional synthetic methods, the method of the present invention offers milder reaction conditions, shorter reaction time, and improved yield, thereby greatly enhancing the economic feasibility of shikonin synthesis.
Owner:GRASSMEDI CO LTD

Polyphenylene ether resin composition and polyphenylene ether composite, and preparation methods therefor and use thereof

PCT designated stageWO2025227780A1Polymer scienceHalohydrocarbon
Disclosed in the present invention are a polyphenylene ether resin composition and a polyphenylene ether composite, and preparation methods therefor and the use thereof. The polyphenylene ether resin composition of the present invention is obtained by reacting polyphenylene ether with a naphthoic acid compound in a melt. The polyphenylene ether has a repeat unit of the structure below: (I), wherein R1, R2, R3 and R4 are each independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbyloxy, or halohydrocarbyloxy. The naphthoic acid compound is at least one of naphthoic acid or hydroxynaphthoic acid. Compared with a polyphenylene ether resin, in a melt, the polyphenylene ether resin composition can not only improve the gas barrier property of the polyphenylene ether composite, but also improve the processing stability of the polyphenylene ether composite during high-temperature injection molding.
Owner:KINGFA SCI & TECH CO LTD

High-orientation perovskite, preparation method and solar cell prepared by using high-orientation perovskite

The invention belongs to the technical field of perovskite cells, and particularly discloses high-orientation perovskite, a preparation method and a solar cell prepared from the high-orientation perovskite, and the high-orientation perovskite comprises a mixture of naphthalene derivatives of sulfonic acid groups and amido, a perovskite component and a precursor solution, the mixture of naphthalene derivatives of sulfonic groups and amido is a mixture of potassium 6-hydroxy-2-naphthalene sulfonate and 6-bromo-2-naphthylamine hydrochloride, the molar mixing ratio of the potassium 6-hydroxy-2-naphthalene sulfonate to the 6-bromo-2-naphthylamine hydrochloride is 1: 0-1: 1, the perovskite component mainly comprises ABX3, and A is at least one of Cs, FA and MA; b is at least one of Pb and Sn; and X is I. According to the invention, crystal lattices are anchored through coordination of sulfonate radicals / hydroxyl radicals and Pbas, occupation of ammonium radicals on FAvacancies and the like, aromatic interaction among naphthalene rings in molecules is utilized to synergistically guide perovskite to orderly grow out of a (100) plane, inhibit lattice inclination and defect formation and regulate and control the orientation of perovskite crystals, so that the perovskite film with high orientation is obtained, and the perovskite film has good application prospects. And the photovoltaic performance of the perovskite solar cell is improved.
Owner:HUAZHONG UNIV OF SCI & TECH +1

A two-photon fluorescent dye, its preparation method and application

This invention discloses a two-photon fluorescent dye, prepared as follows: 6-hydroxy-2-naphthaldehyde reacts with a dihaloalkane under alkaline conditions to obtain a monohaloalkane-based aryl ether, which is then reacted with an aqueous trimethylamine solution to prepare S1; diethyl 4-(4-tolyl)pyridine-2,6-dicarboxylate reacts with N-bromosuccinimide to obtain a brominated product, which is then reacted with triphenylphosphine to prepare S2. After intermediates S1 and S2 react under strongly alkaline conditions, the product is then hydrolyzed to prepare the target product. This dye exhibits good cell membrane permeability, good dispersion in the cytoplasm, preferentially targets organelles in the cytoplasm, is water-soluble, has very low toxicity, and a high two-photon absorption interface, making it suitable for two-photon fluorescence confocal microscopy imaging.
Owner:BENGBU MEDICAL COLLEGE

Cerium oxide polishing liquid, method for preparing the same, and use thereof

PendingCN122381698ASulfonatePhysical chemistry
This application relates to the field of polishing slurry technology, and in particular to cerium oxide polishing slurry, its preparation method and application. The cerium oxide polishing slurry includes a solvent and a solute. The solvent includes water, and the solute includes cerium oxide, 4-sulfonylcalix[6]arene, sodium 2,3-dihydroxynaphthalene-6-sulfonate, a lubricant, a zwitterionic dispersant and a pH adjuster. In the cerium oxide polishing slurry, the mass percentage of cerium oxide is 4.0%~13.0%, the mass percentage of 4-sulfonylcalix[6]arene is 0.3%~1.3%, the mass percentage of sodium 2,3-dihydroxynaphthalene-6-sulfonate is 0.1%~1.0%, the mass percentage of lubricant is 0.1%~0.55%, and the mass percentage of zwitterionic dispersant is 0.3%~1.3%. The pH value of the cerium oxide polishing slurry is 3.8~4.2. Using the cerium oxide polishing slurry provided in this application reduces the formation of Ce-Si-O that is difficult to clean during the polishing process and improves the cleaning yield and stability after polishing.
Owner:WEIDALI IND CHIBI CO LTD

Waterproof anticorrosive paint and preparation method thereof

The invention relates to a waterproof anticorrosive paint and a preparation method thereof, and belongs to the technical field of paints.The paint comprises a component A and a component B, the component A comprises organic titanium-silicon-POSS (Polyhedral Oligomeric Silsesquioxane) hybrid resin, intercalation modified hydrotalcite-boron nitride composite barrier filler and the like; and the component B comprises a nitrogen-phosphorus modified amine composite curing agent, an interface metal anchoring accelerator and the like. The organic titanium-silicon-POSS hybrid resin is prepared by carrying out a reaction on tetraisopropyl titanate, 2, 3-dihydroxy naphthalene, methyltrimethoxysilane, KH-792 and octa-amino POSS (Polyhedral Oligomeric Silsesquioxane). The intercalation modified hydrotalcite-boron nitride composite barrier filler is prepared by stirring magnesium-aluminum hydrotalcite powder, phytic acid and KH-550 modified boron nitride nanosheets. The nitrogen-phosphorus modified amine composite curing agent is prepared from tris (2-aminoethyl) amine, hydroxymethyl phenyl phosphinic acid, p-toluenesulfonic acid and a T-31 epoxy resin curing agent. The interface metal anchoring accelerant is prepared from triethylamine, absolute ethyl alcohol and 2-aminoethyl phosphonic acid.
Owner:CHINA PAINT XINFENG CO LTD

Eu < 3 + > compound AIE sensor, preparation thereof and application of Eu < 3 + > compound AIE sensor in fluorescent cycle recognition of Cu < 2 + > and ATP

The invention discloses an AIE fluorescent sensor. The AIE fluorescent sensor is identified by a compound of a quinolinic acid derivative functionalized by a host molecule 2-hydroxy-1-naphthaldehyde and Eu < 3 + > in a DMF-H2O solution. The sensor shows yellow fluorescence in a solvent DMF-60% H2O, aqueous solutions of Fe < 3 + >, Cu < 2 + >, Sr < 2 + >, Al < 3 + >, Ag < + >, Ca < 2 + >, Hg < 2 + >, Fe < 2 + >, Co < 2 + >, Ni < 2 + >, Cd < 2 + >, Pb < 2 + >, Zn < 2 + >, Cr < 3 + >, Mg < 2 + > and Ba < 2 + > are respectively added into the solution, and only the addition of Cu < 2 + > can quench the fluorescence of the sensor. In addition, an aqueous solution of ATP, ADP, AMP, H2PO4 <->, HPO4 < 2-> and Cl <-> is added into the sensor containing the copper ions and the europium ions, and only the ATP is added, so that fluorescence of the sensor can be turned on. The recognition performance of Cu < 2 + > fluorescence quenching and ATP fluorescence opening can be used for circularly recognizing Cu < 2 + > and ATP for more than four times. Therefore, the AIE sensor can be used for fluorescent cycle recognition of copper ions and ATP (adenosine triphosphate). Meanwhile, the test paper prepared by the fluorescence sensor can also be used for detecting Cu < 2 + > and ATP. The fluorescence recognition performance has important application value in the field of ion and molecular recognition.
Owner:EASTERN GANSU UNIVERSITY