83 results about "Naphthoic acid" patented technology

To provide a fine granulated agent replenishing liquid for a plating liquid, with the replenishing liquid being excellent in the initial stability and safety, and the replenished plating liquid being excellent in the aging stability, without damaging the appearance of a plating film when replenished for a long period of time nor dissolving an organic resist film present on a material to be plated.SOLUTION: A fine granulated agent replenishing liquid for a plating liquid, replenishing a fine granulated agent to a tin-based plating solution including one or two or more kinds of compounds selected from the group consisting of benzaldehyde, 1-naphthaldehyde, 1-naphthoic acid, 1-acetonaphthone, DL-1-(1-naphthyl)ethylamine, and benzylidene acetone, includes a phenyl glycol-based surfactant, the fine granulated agent and water, with a content of the fine granulated agent therein being in a range of 0.1 g / L or more and 10.0 g / L or less, a content of the phenyl glycol-based surfactant therein being in a range of 5 g / L more and 50 g / L or less, and a content of alcohol being less than 1 mass%.SELECTED DRAWING: None

The invention provides a corrosion-resistant film, a pipe and a preparation method and application of the corrosion-resistant film, the corrosion-resistant film at least contains modified LCP, the modified LCP comprises p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid and 3, 4-dihydroxythiophene methyl diformate, the p-hydroxybenzoic acid, the 6-hydroxy-2-naphthoic acid and the 3, 4-dihydroxythiophene methyl diformate are used as raw materials, and the 6-hydroxy-2-naphthoic acid and the 3, 4-dihydroxythiophene methyl diformate are used as raw materials. And the molar ratio of the 2, 4-dihydroxy thiophene methyl dicarboxylate is (60-80): (5-40): (0.5-3). The corrosion-resistant thin film provided by the invention is excellent in mechanical property and corrosion resistance, and the corrosion-resistant pipe provided by the invention is high in combining capacity with the thin film and good in corrosion resistance.

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.

The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with mucic acid, 3,5-dihydroxybenzoic acid, and 2,3-dihydroxybenzoic acid, and crystalline polymorphic forms of nicotine 4-acetamidobenzoate, nicotine gentisate, and nicotine 1-hydroxy-2-naphthoate are described. The invention further provides methods of preparation and characterization of such nicotine salts, co-crystals, and salt co-crystals and polymorphic forms thereof. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and / or salt co-crystals are also provided.

The invention provides certain nicotine salts, co-crystals, and salt co-crystals and provides novel polymorphic forms of certain nicotine salts. In particular, nicotine salts with mucic acid, 3,5-dihydroxybenzoic acid, and 2,3-dihydroxybenzoic acid, and crystalline polymorphic forms of nicotine 4-acetamidobenzoate, nicotine gentisate, and nicotine 1-hydroxy-2-naphthoate are described. The invention further provides methods of preparation and characterization of such nicotine salts, co-crystals, and salt co-crystals and polymorphic forms thereof. In addition, tobacco products, including smoking articles, smokeless tobacco products, and electronic smoking articles comprising nicotine salts, co-crystals, and / or salt co-crystals are also provided.

This invention discloses a viscosity reducer and a slurry preparation method suitable for preparing coal-water slurry from high-viscosity organic wastewater. The high-viscosity organic wastewater viscosity reducer is prepared by adding naphthoic acid (obtained from methylnaphthalene oxidation) to ethylene oxide and propylene oxide in a certain proportion. The slurry preparation method involves adding sodium naphthalenesulfonate as an additive to the high-viscosity organic wastewater after viscosity reduction to obtain the coal-water slurry. This invention overcomes the disadvantage that high-viscosity organic wastewater is unsuitable for preparing coal-water slurry, successfully using a viscosity reducer to reduce the viscosity of high-viscosity organic wastewater and obtain a high-coal-content coal-water slurry.

Provided are: an optical material composition that makes it possible to increase the in-plane retardation of an optical member; a resin composition containing the optical material composition; and a resin molded article of the same.　An optical material composition according to the present invention contains a trehalose derivative. The trehalose derivative is preferably one or more selected from the group consisting of trehalose benzoate, trehalose acetate, and trehalose naphthoate. This optical material composition makes it possible to increase the in-plane retardation of an optical member.

This invention discloses a phenylnaphthic acid derivative and its application in phosphorescent information encryption. The preparation method involves using 3,5-bis(ethoxycarbonyl)phenylboronic acid and methyl 6-bromo-2-naphthylcarboxylate as raw materials, and then performing a Suzuki coupling reaction under tetra(triphenylphosphine)palladium(O) catalysis to obtain the intermediate ethyl 2-(3,5-bis(ethoxycarbonyl)phenyl)-6-naphthylcarboxylate. This intermediate is then subjected to alkaline hydrolysis and acidification to obtain the target product, 2-(3,5-dicarboxyphenyl)-6-naphthylcarboxylic acid. This phosphorescent material has a simple preparation method, lower cost compared to noble metal phosphorescence systems, a simple guest synthesis method with high yield, and exhibits significant and stable phosphorescence effects. Furthermore, precise emission color control of high-performance doped thin films is achieved through the triplet-to-singlet Förster fluorescence resonance energy transfer (TS-FRET) mechanism, establishing a multicolor long-lifetime emission system. In addition, the material has multi-color adjustable properties and excellent long afterglow emission performance, showing great application potential in cutting-edge application fields such as multi-dimensional information encryption and high-end anti-counterfeiting.

The invention belongs to the field of organic synthesis, and particularly relates to a synthesis method of a benzofuran compound. In an inert gas environment, a 2-fluorotoluene compound as shown in a formula 1 and a methyl benzoate compound as shown in a formula 2 are mixed and reacted with an organic solvent methyl tert-butyl ether in the presence of bis (trimethylsilyl) amino cesium and cesium sulfate, and the benzofuran compound as shown in a formula 3 is synthesized under a heating condition. Wherein the methyl benzoate compound as shown in the formula 2 can also be replaced by 2-naphthoic acid methyl ester or 1-naphthoic acid methyl ester. The research develops a benzofuran synthesis strategy without transition metal catalysis. According to the method, on the basis of commercially available raw materials, the construction of a benzofuran skeleton is realized through a simple and efficient path. Due to the mild and green reaction characteristic, a route with practical value is provided for synthesis of active medicine molecules and key intermediates of the active medicine molecules.

The invention relates to the technical field of flue gas desulfurization catalysts, and discloses an activated carbon catalyst for flue gas desulfurization and a preparation method thereof.The preparation method comprises the steps that water and copper salt are added into a container, stirring is conducted, amino naphthoic acid grafted cellulose is added, ionic crosslinking is conducted, a crosslinking product is placed into a tubular furnace, calcination and activation are conducted, and the activated carbon catalyst for flue gas desulfurization is obtained. The activated carbon catalyst for flue gas desulfurization is obtained. The porous activated carbon with a high specific surface area and a high-stability carbon skeleton is formed by taking a cellulose matrix and a naphthalene ring with high char-forming property as carbon sources, the porous activated carbon is large in specific surface area and rich in pores, contains a large number of copper oxide catalytic active components, can effectively reduce the content and concentration of sulfur dioxide in flue gas, and forms an active nitrogen structure in the activated carbon matrix through high-temperature calcination, so that the content of sulfur dioxide in flue gas is reduced. The SO2 adsorption capacity of the activated carbon can be improved.

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.

The present application relates to the technical field of flue gas desulfurization catalyst, and disclose a kind of active carbon catalyst for flue gas desulfurization and preparation method, the present application is added to container water, copper salt, after stirring, amino naphthalene formic acid graft cellulose is added, ion crosslinking is carried out, crosslinking product is placed in tube furnace, calcination, activation is carried out, and the active carbon catalyst for flue gas desulfurization is obtained. With cellulose matrix and high carbon naphthalene ring as carbon source, form high specific surface area, high stability carbon skeleton porous active carbon, large specific surface area, abundant porosity, contain a large number of copper oxide catalytic active component, can effectively reduce the content and concentration of sulfur dioxide in flue gas, after high temperature calcination in active carbon matrix form active nitrogen structure, can improve the adsorption capacity of active carbon to SO2.

To provide a solid form of sulcardine salts other than sulfuric acid salts of sulcardine.SOLUTION: There is provided a solid form comprising an acid salt of sulcardine, wherein the acid is ethane-1,2-disulfonic acid, naphthalene-1,5-disulfonic acid, 1-hydroxy-2-naphthoic acid, naphthalene-2- sulfonic acid, hydrochloric acid, or hydrobromic acid.SELECTED DRAWING: None

The invention discloses a fluorescent molecular probe for detecting SEI on the surface of an electrode in a lithium metal battery and a synthesis method and application of the fluorescent molecular probe, and relates to the technical field of lithium metal batteries, the fluorescent molecular probe is Li2HNA, and the chemical structural formula of the fluorescent molecular probe is shown in the specification. The synthesis method of the Li2HNA comprises the following steps: dissolving 3-hydroxy-2-naphthoic acid and LiOH in a mixed solution composed of deionized water and ethanol, carrying out a stirring reaction to obtain a precipitate, and washing and drying the precipitate to obtain the Li2HNA. By adopting the fluorescent molecular probe disclosed by the invention, the compactness of SEI in a lithium metal electrode in a large-size range can be qualitatively detected and the content of dead Li in the SEI in the lithium metal electrode can be quantitatively detected through fluorescence imaging and fluorescence titration technologies.

A purpose of the present invention is to provide a novel heat resistant composition that imparts heat resistance to various materials and therefore can be suitably used particularly for improving the heat resistance of resin materials. Another purpose of the present invention is to provide a heat resistance improvement agent and a resin composition which comprise the heat resistant composition. The present invention is a composition which is used for imparting heat resistance, said composition comprising a trehalose derivative. The trehalose derivative is preferably one or more substances selected from the group consisting of trehalose benzoate, trehalose octaacetate, trehalose naphthoate, and trehalose fatty acid esters.

The application discloses a europium functionalized metal-organic framework double-emission fluorescent probe and a preparation method and application thereof, relates to the field of organic metal frameworks and fluorescent detection, and the preparation method comprises the following steps: mixing ZrCl4, pyromellitic acid, 6-hydroxy-2-naphthoic acid and water, adding acetic acid to obtain a mixture; the mixture is heated to reflux, centrifuged to obtain a residue, washed and dried to obtain UCHNA; the UCHNA is dispersed in an aqueous solution of Eu(NO3)3.6H2O, heated to react, the white precipitate is collected, washed and dried, and the Eu-MOF is obtained. 3+ The application has the beneficial effect that a luminescent ligand 6-hydroxy-2-naphthoic acid is used to modify a UiO-66 type MOF, and Eu 3+ -MOF is synthesized through post-modification and reasonable design, and the Eu-MOF can selectively and rapidly respond to crystal violet (CV) and quinine (QN) through different response modes, and has a low detection limit, which is superior to most reported sensors.

To provide a new heat-resistant composition suitably usable for imparting heat resistance to various materials, especially for improving the heat resistance of resin materials. Another object of the present invention is to provide a heat resistance improver and a resin composition containing the heat-resistant composition.SOLUTION: The present invention relates to a composition for imparting heat resistance, which comprises a trehalose derivative. The trehalose derivative is preferably one or more kinds selected from the group consisting of trehalose benzoate, trehalose octaacetate, trehalose naphthoate and trehalose fatty acid ester.SELECTED DRAWING: None

The invention relates to the technical field of high-performance polymer fiber manufacturing, in particular to a low-processing-viscosity liquid crystal polyarylester fiber and a preparation method thereof.The preparation method comprises the steps that S1, p-hydroxybenzoic acid and 2-hydroxy-6-naphthoic acid serve as monomers, and an acetylation reaction is conducted in the presence of an acetylation reagent and a catalyst; the preparation method comprises the following steps: firstly, preparing LCP resin, then carrying out melt polycondensation reaction, adding 6-acetoxy-2-naphthoic acid at the later stage of the melt polycondensation reaction, stirring and dispersing, discharging, cooling and granulating to obtain the LCP resin; and S2, carrying out melt spinning and heat treatment on the LCP resin to obtain the liquid crystal polyarylate fiber. According to the preparation method, the melt processing viscosity of the resin can be remarkably reduced, the production smoothness is improved, the heat treatment time is shortened, the production energy consumption is reduced, the high molecular weight potential of the resin in spinning processing is not influenced, and the liquid crystal polyarylate fiber is ensured to have very good strength performance.

The invention discloses a preparation method of amorphous arfamarin. The method comprises the following steps: by taking 4-[3-(3-chloro-5-trifluoromethyl-phenyl)-4, 4, 4-trifluoro-1-oxo-2-butene-1-yl]-naphthalene-1-methyl formate and hydroxylamine hydrochloride as initial raw materials, carrying out cyclization reaction under the catalysis of a phase transfer catalyst and an acid-binding agent, then carrying out alkaline hydrolysis reaction, and finally, carrying out reaction with 2-amino-N-(2, 2, 2-triazole-1-yl)-1-methyl-2-oxo-2-butene-1-yl)-1-methyl-2-oxo-2-butene-1-yl)-2-amino-N-(2, 2, 2-triazole-1-yl)-1-methyl-2- 2, 2, 2-trifluoroethyl) acetamide is subjected to a condensation reaction to obtain a crude product of arfola, and the amorphous arfola is obtained through dissolution, decoloration and spray drying. The method is short in synthetic route, mild in reaction condition, simple and convenient to operate, high in conversion rate and suitable for industrial production, the purity can reach 99.5% or above, the single impurity content is smaller than 0.1%, and the finished product crystal form is amorphous.

The present invention relates to the technical field of polymer materials, and in particular to a spinning-grade wholly aromatic polynaphthoate resin and a preparation method therefor. In the present invention, p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, an aromatic dicarboxylic acid, and an ethylene glycol monomer are used as starting materials and are polymerized under the action of a catalyst. Under specific reaction conditions, a spinning-grade wholly aromatic polynaphthoate resin is successfully obtained. The spinning-grade wholly aromatic polynaphthoate resin has high molecular weight, low impurity content, good heat resistance and good melt fluidity, exhibits a more pronounced shear thinning behavior, and can be directly used for the preparation of polynaphthoate fibers.

The objective of this invention is to provide a liquid crystal polyester resin that exhibits low dielectric constant and low dielectric loss tangent while simultaneously improving practical heat resistance and suppressing the generation of escape gases or foreign matter. The liquid crystal polyester resin based on this invention is characterized by comprising at least 90 mol% of constituent units derived from hydroxycarboxylic acids, including constituent units (A) derived from p-hydroxybenzoic acid, constituent units (B) derived from 6-hydroxy-2-naphthoic acid, and constituent units (C) derived from hydroxycarboxylic acids other than those described above (A) and (B). Constituent unit (C) is a constituent unit selected from at least one of m-hydroxybenzoic acid, 6-hydroxynicotinic acid, and 4'-hydroxy-4-biphenylcarboxylic acid. The liquid crystal polyester resin further… The step comprises at least one of a constituent unit (D) from a dicarboxylic acid and a constituent unit (E) from a diol, wherein the composition ratio (mol%) of the constituent units (A) to (E) satisfies the following conditions: 10 mol% ≤ constituent unit (A) ≤ 30 mol%, 60 mol% ≤ constituent unit (B) ≤ 80 mol%, 0.1 mol% ≤ constituent unit (C) ≤ 10 mol%, 0.1 mol% ≤ constituent unit (D) + constituent unit (E) ≤ 2.0 mol%, and the melt viscosity of the liquid crystal polyester resin measured at 350°C under a shear rate of 1000 / s is 25 Pa·s or higher.

A method for synthesizing an aluminium-fluoride complex obtainable by reacting together: a salt made of aluminium(III) and counterions of aluminium(III) other than chloride(I), and a fluoride anion; or a chelate bearing molecule precomplexed with aluminium(III), obtained from treating the chelate bearing molecule with a salt made of aluminium(III) and counterions of aluminium(III) other than chloride(I), and a fluoride anion; the fluoride being [19F]fluoride or radioactive [18F]fluoride; wherein the counterions of aluminium(III) other than chloride are selected from bromide, iodide, nitrate, phosphate, sulfate, sulphonate, hydroxide, any anionic salt of natural and non-natural amino acids, 2,4-pentanedionate, 8-hydroxyquinoline, acetate, acrylate, ascorbate, aspartate, benzenesulfonate, benzoate, besylate, bitartrate, camphorsulfonate, citrate, decanoate, esylate, fumarate, gentisate, gluconate, glutamate, glutarate, glycinate dihydroxide, glycolate, hexanoate, hydroxynaphthoate, isethionate, lactate, lactobionate, malate, maleate, malonate, mandelate, mesylate, methylsulfate, methylsulfonate, mucate, napsylate, octanoate, oleate, oxalate, pamoate, pantothenate, phthalate, polygalacturonate, propionate, salicylate, stearate, succinate, tartrate, teoclate, toluenesulfonate, trifluoroacetate, trifluoromethanesulfonate, and any combination thereof.

The invention discloses a high-heat-resistance low-dielectric thermotropic liquid crystal polyester containing a large-volume side group and a preparation method thereof. The preparation method comprises the following steps: respectively carrying out acetylation reaction on a monomer 6-hydroxy-2-naphthoic acid and bisphenol AP with a mixture of acetic anhydride and 1-methylimidazole, and then recrystallizing and refining; and adding the refined 6-acetoxy-2-naphthoic acid monomer, the refined acetylated bisphenol AP monomer, terephthalic acid and zinc acetate into a container, heating, carrying out melt polycondensation reaction, after the reaction is finished, cooling the product, crushing, and drying, so as to obtain the high-heat-resistance low-dielectric thermotropic liquid crystal polyester containing the large-volume side group. The low-dielectric thermotropic liquid crystal polyester material is prepared by introducing a bisphenol monomer containing a large-volume side group in a melt polymerization manner; the dielectric constant and dielectric loss of the liquid crystal polymer are greatly reduced, the melting point of the liquid crystal polyester can be improved, and the prepared liquid crystal polymer has excellent insulating property and thermal property and can meet the application requirement under 5G high frequency.

This invention discloses an ultrastable hydrogen-bonded organic framework material, its preparation method, and its applications. The preparation method involves mixing a deprotonated solution of 6,6',6'',6'''-(pyrene-1,3,6,8-tetramethyl)tetra(2-naphthoic acid) with a solution of 4,4',4'',4'''-methanetetraphenylamidine tetrahydrochloride. After standing in the dark, the mixture is centrifuged, washed, and lyophilized. The resulting hydrogen-bonded organic framework material exhibits excellent stability and high photocatalytic efficiency, making it effective for the photocatalytic preparation of BHMF from HMF. Adding MsAcT enzyme powder to the 4,4',4'',4'''-methanetetraphenylamidine tetrahydrochloride solution yields a hydrogen-bonded organic framework material encapsulating MsAcT enzyme. This material can be effectively used for the one-pot photocatalytic preparation of BHMF diacetate from HMF.

The invention relates to the technical field of adapalene production, and discloses an adapalene raw material preparation method which comprises the following steps: (1) adding a basic salt reagent into an alcohol solvent, and stirring until the basic salt reagent is dissolved; (2) adding 6-bromo-2-naphthoic acid into the alkaline alcohol solution in the step (1) under the protection of nitrogen, and uniformly stirring to obtain a mixed suspension; (3) stirring and heating the mixed turbid liquid in the step (2) under a nitrogen protection condition, and stirring and cooling to 10-30 DEG C; and (4) carrying out suction filtration, pulping and suction filtration on the mixed suspension cooled to 10-30 DEG C in the step (3), collecting a filter cake, and carrying out forced air drying to obtain the 6-bromo-2-sodium naphthoate. The invention provides a preparation process of 6-substituted-2-sodium naphthoate, which is simple, low in cost and suitable for industrialization, and is applied to synthesis of adapalene.

The invention discloses an isoquinoline-5-formic acid coordinated catalyst, a composite catalyst, a preparation method and application, the chemical general formula of the isoquinoline-5-formic acid coordinated catalyst is shown in the specification, and the composite catalyst comprises the isoquinoline-5-formic acid coordinated catalyst, an auxiliary catalyst, a regulator, a protective agent and a solvent, by using the isoquinoline-5-formic acid coordinated catalyst or composite catalyst provided by the invention, the selectivity of the oxidation reaction of 4-methyl-1-naphthoic acid can be improved, the reaction activity can be increased, and the catalyst or composite catalyst can be used repeatedly and has a relatively high utilization rate.

The invention relates to a bio-based liquid crystal copolyester, a fiber and a preparation method of the bio-based liquid crystal copolyester, the structure of the liquid crystal copolyester is shown as a formula (1), wherein 30 < = x < = 60, 30 < = y < = 130, and 15 < = z < = 100. The bio-based liquid crystal copolyester disclosed by the invention is formed by polymerizing three monomers, namely 6-hydroxy-2-naphthoic acid, 4-hydroxybenzoic acid and vanillic acid, and the bio-based liquid crystal copolyester can be used for preparing fibers with good mechanical properties.

To provide a liquid crystalline resin having a low dielectric constant and low dielectric loss tangent while maintaining a high melting point and to provide a liquid crystalline resin composition comprising the same.SOLUTION: There is provided a liquid crystalline resin which shows optical anisotropy during melting and contains structural units (I) to (III) and optionally contains structural units (IV) and (V), wherein for all structural units, the content of (I) is 2.5 to 35 mol%, the content of (II) is 25 to 55 mol%, the content of (III) is 15 to 37.5 mol%, the content of (IV) is 0 to 35 mol% and the content of (V) is 0 to 15 mol%. (I): a cyclohexanedicarboxylic acid unit, (II) 6-hydroxy-2-naphthoic acid, (III): -X-Ar1-Y-, (IV) -C(=O)-Ar2-C(=O)-, (V): 4-hydroxybenzoic acid. (Wherein, Ar1 and Ar2 each independently represent a phenylene group, a naphthylene group, or a biphenylene group, X and Y each independently represent an oxygen atom or an imino group.)SELECTED DRAWING: None

Crystals of 3-hydroxy-N′-(1,3-dimethylbutylidene)-2-naphthoic acid hydrazide having an X-ray powder diffraction pattern comprising a peak of maximum intensity at an angle of diffraction (2θ) of 6.9±0.2°, 11.4±0.2° and / or 25.2±0.2°. The crystals are useful as rubber additives in tires.

The present disclosure is generally directed to antimicrobial polymers, and methods of preparation thereof. In embodiments, an antimicrobial polymer may comprise a polymeric moiety, an aromatic moiety comprising a naphthoic acid derivative bonded to the polymeric moiety, a pendant group comprising a cation and a linking group bonded to the pendant group and aromatic moiety. Methods of preparation include reacting naphthoic acid or a derivative thereof with a polymer to form a primary intermediate, reacting an alcohol group on the primary intermediate with an acyl halide to form a secondary intermediate, reacting a terminal halide on the acyl halide to form a cationic group on the secondary intermediate.