44 results about "Naphthoic acid" patented technology

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.

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.

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 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.

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 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.

The application discloses a synthesis method of 4-acetyl-1-naphthalene carboxylic acid and belongs to the technical field of organic synthesis. The 4-acetyl-1-naphthalene carboxylic acid is prepared from 1-bromonaphthalene as a starting material. The 1-bromonaphthalene is cheap and easy to obtain. The intermediate 4-bromo-1-naphthalene ketone is obtained through a Friedel-Crafts acylation reaction. The ketal is obtained through a condensation reaction. The cyano-substituted product is obtained through a cyanylation reaction. Finally, the 4-acetyl-1-naphthalene carboxylic acid is obtained through hydrolysis. The preparation process is simple, the reaction condition is mild, the raw material is cheap and easy to obtain, the cost is low, the high-purity product can be obtained at a high yield, and the method is suitable for industrial amplification production. The method effectively solves the problems of high cost of reaction raw materials, use of expensive catalysts, dangerous reaction reagents, complex reaction steps and low product yield in the prior synthesis method.

The application discloses a method for preparing phenylethylamine by reducing and aminating acetophenone and a catalyst used in the method. The catalyst is prepared by a preparation method comprising the following steps: 1) loading active metal oxide on a support to obtain an active metal oxide / support; 2) synthesizing a molecular sieve carrier in the presence of the active metal oxide / support to obtain a catalyst precursor; 3) treating the catalyst precursor with an acid solution to obtain an acid-modified catalyst precursor; and 4) calcining and reducing the acid-modified catalyst precursor to obtain the catalyst. The acid is selected from citric acid and / or naphthalene carboxylic acid; and the molar concentration of the acid solution is 0.05-0.2 mol / L. The catalyst is used to accurately control the adsorption mode of acetophenone, the reaction selectivity is improved, the target product is easy to separate, and the purity of the target product is very high after purification.

The invention belongs to the technical field of catalyst preparation and organic synthesis, and particularly discloses a cobalt-nickel bimetallic catalyst and a preparation method and application thereof.According to the cobalt-nickel bimetallic catalyst, silicon dioxide serves as a carrier, and cobalt and nickel bimetallic active components with the molar ratio being 1: 2-2: 1 are evenly loaded; the catalyst is prepared through silica template pretreatment, mixing of a cobalt source and a nickel source and reduction of a reducing agent, and is simple to synthesize, low in cost and recyclable. The catalyst is applied to preparation of dimethyl 2, 6-naphthalate, 6-hydroxy-2-naphthoic acid which is easy to obtain and low in cost can be used as a starting raw material, a target product can be obtained through esterification, hydroxyl protection and carbonyl insertion, the conversion rate of the carbonyl insertion reaction can reach 90.1%, aftertreatment and purification are simple, the product purity is larger than or equal to 99.90%, and the catalyst is suitable for industrial production. And the cobalt-nickel bimetallic catalyst can be recycled, so that the production cost is remarkably reduced, the production period is remarkably shortened, the industrial application prospect is very strong, and a foundation is laid for industrialization of the PEN material.

The utility model discloses a kind of purification device of 2-hydroxy-6-naphthalene carboxylic acid, including pretreatment box and evaporator;Pretreatment box is arranged at evaporator side, and is connected by discharge pipe and the feed inlet of evaporator, filter mechanism for filtering treatment to raw material is arranged in pretreatment box, and filtered raw material flows into evaporator by discharge pipe;Filter mechanism includes filter frame and pollution discharge mechanism;Pretreatment box top is opened, and is capped by cover plate, filter frame is detachably installed in pretreatment box, feed pipe is extended to filter frame after being set on cover plate, and pollution discharge mechanism is set in filter frame, for discharging impurity in filter frame.The utility model has the advantages compared with prior art in that: by setting filter frame and pollution discharge mechanism, large particle impurities and other suspended solids in raw material liquid can be effectively removed, the design of pollution discharge mechanism makes the impurities in filter frame can be discharged in time, avoids that impurities accumulate in filter frame.

The present disclosure relates to polymorphs of D9-THC-naphthoylester for the preparation of D9-Tetrahydrocannabinol in high yields and high purity, methods of preparing the D9-Tetrahydrocannabinol, and compositions comprising the D9-Tetrahydrocannabinol.

The present invention provides an optical material composition that enables a large in-plane phase difference of an optical component, a resin composition containing the optical material composition, and a resin molded article thereof. [Solution] The optical material composition of the present invention contains a trehalose derivative. Preferably, such a trehalose derivative is one or more selected from the group consisting of trehalose benzoate, trehalose acetate, and trehalose naphthoate. The optical material composition of the present invention makes it possible to increase the in-plane phase difference of an optical member.

The application provides a naphthalene carboxylic acid and / or derivative acid intercalated layered double hydroxide and a preparation method thereof. The preparation method comprises: reacting a mixed system containing naphthalene carboxylic acid and / or derivative, or alkali metal salt of naphthalene carboxylic acid and / or derivative, divalent metal chloride, trivalent metal chloride and alkali to obtain the naphthalene carboxylic acid and / or derivative acid intercalated layered double hydroxide. The preparation method of the application uses magnesium chloride and aluminum chloride as metal ion sources, naphthalene carboxylic acid and / or derivative or salt thereof as anion source, and sodium hydroxide or potassium hydroxide as alkali source to prepare the LDHs, solves the problems of low flame retardant efficiency, poor ultraviolet resistance of common layered double hydroxide fillers and the problem that common layered double hydroxide fillers cannot have both flame retardant and ultraviolet resistance, and can simultaneously improve the flame retardant property and ultraviolet absorption property of the layered double hydroxide.

The application discloses a 1,4-dihydroxy-2-naphthoic acid-polyisoprene transferase mutant, a construction method and application thereof, and belongs to the technical field of biology. Eight 1,4-dihydroxy-2-naphthoic acid-polyisoprene transferase mutants which are significantly superior to wild-type enzymes in catalytic efficiency are obtained through rational design and screening, and a recombinant Escherichia coli based on the mutants is constructed, so that the yield of vitamin K2 produced by the whole cell catalysis of the constructed recombinant bacteria is more than 30% higher than that of a wild-type strain. The excellent catalytic performance of the menA mutant provided by the application provides strong technical support for the industrialized production of vitamin K2, and has wide application prospect and market value.

The invention discloses a phenolic hydroxyl naphthoic acid metal compound catalyst for PEST synthesis and a preparation method of the phenolic hydroxyl naphthoic acid metal compound catalyst, and belongs to the technical field of polyester catalysts. According to the technology, metal chloride reacts with alkali to generate metal hydroxide, the metal hydroxide reacts with phenolic hydroxyl naphthoic acid to form the phenolic hydroxyl naphthoic acid metal compound, and the problems that an existing polyester catalyst is poor in hydrolytic stability, and polyester discoloration is easily caused by high temperature are effectively solved. According to the catalyst, a large-volume naphthol group is adopted to replace a traditional alkoxy chain, so that the hydrolysis resistance is remarkably enhanced; the phenolic hydroxyl group on the ligand endows the compound with oxidation resistance, and the thermal stability is improved. The preparation method disclosed by the invention has the advantages of simplicity and convenience in operation and mild synthesis conditions, and the obtained product has the characteristics of low price and stable performance. Experiments show that the molecular weight of the PEST material catalytically synthesized by the catalyst is remarkably increased, the chromaticity is excellent, the chain segment sequence is controllable, meanwhile, the reaction efficiency and the system stability are effectively improved, and the industrial production requirements are completely met.

The application discloses a kind of high-temperature-resistant polyphenyl sulfone composite and preparation method thereof, belong to polyphenyl sulfone composite technical field, first by ultrasonic dispersion and complexation reaction preparation tannic acid-iron complex modified molybdenum disulfide, iron-containing carbon-coated molybdenum disulfide is obtained by high-temperature carbonization, so it has good stability and lubricity, then using 6-hydroxy-2-naphthoic acid, 4,4'-diphenyl ether dicarboxylic acid and 4,4'-dihydroxy diphenyl sulfone and other monomers in acetic anhydride system are prepared by melt polycondensation and solid phase condensation reaction, modified aromatic liquid crystal polyester is prepared, and fiber network is formed, finally, iron-containing carbon-coated molybdenum disulfide and modified aromatic liquid crystal polyester and polyphenyl sulfone resin are melt blended in double-screw extruder, and high-temperature-resistant polyphenyl sulfone composite is obtained, effectively solve the problem that the lubricating property of polyphenyl sulfone material is reduced under high temperature and high humidity environment, and the mechanical toughness is attenuated, suitable for high-end medical instrument application needing long-term tolerance multiple sterilization cycle.

The preparation method comprises the following steps: respectively reacting p-acetoxybenzoic acid, 6-acetoxy-2-naphthoic acid, 3, 6-diacetoxyphthalonitrile, an aromatic diacid monomer, a catalyst and an antioxidant at the temperature of 200-220 DEG C, 240-260 DEG C and 280-320 DEG C in an inert atmosphere to obtain the low-dielectric-constant thermal crosslinking type polynaphthyl ester, namely the low-dielectric-constant thermal crosslinking type polynaphthyl ester, wherein the low-dielectric-constant thermal crosslinking type polynaphthyl ester is prepared by reacting p-acetoxybenzoic acid, 6-acetoxy-2-naphthoic acid, 3, 6-diacetoxyphthalonitrile, an aromatic diacid monomer, a catalyst and an antioxidant. Discharging, crushing and drying to obtain the wholly aromatic polynaphthyl ester with the phthalonitrile side group; and then carrying out hot press molding at 280-320 DEG C, carrying out cross-linking reaction in vacuum, and raising the temperature to 340-380 DEG C to realize thermal cross-linking of the phthalonitrile so as to obtain the polynaphthyl ester. By introducing a crosslinkable phthalonitrile group and adopting a two-step process, the problem of thermal oxidation degradation in the later stage of traditional melt polymerization is effectively avoided, and the prepared material has excellent mechanical properties, heat resistance, low water absorption and dielectric properties, and is particularly suitable for the field of 6G communication.

The invention relates to aromatic liquid crystal polyester resin, a preparation method thereof and a composite liquid crystal polymer material. The aromatic liquid crystal polyester resin is prepared from the following raw materials in parts by mole: 55 to 65 parts of p-hydroxybenzoic acid, 1 to 3 parts of 2-hydroxy-6-naphthoic acid, 14 to 16 parts of diphenol, 17 to 21 parts of phthalic acid and 3 to 5 parts of acetaminophen. The aromatic liquid crystal polyester resin has high mechanical strength, high fluidity, good toughness and high thermal deformation temperature, so that the aromatic liquid crystal polyester resin can be used for manufacturing precise electronic parts such as electronic connectors and the like, and can be well suitable for surface assembly technologies such as reflow soldering and the like.