40 results about "Para Hydroxybenzoic Acids" patented technology

The invention discloses caper extract and a preparation method thereof. The method comprises the following steps: medicinal materials are crushed, decocted in water or subjected to heating reflux extraction by utilization of ethanol with different concentrations, and added with the ethanol for impurity precipitation after concentration of extract; supernatant or more than 80 percent ethanol extract is subjected to concentration at reduced pressure; extract 1 is obtained after recovery of the ethanol, dried and dissolved in water, subjected to deesterification by utilization of petroleum ether, and extracted by ethyl acetate; an extracted position and a water-soluble position of the ethyl acetate are subjected to vacuum concentration and drying respectively and prepared into extract 2 and extract 3 respectively; the extract 1 contains 30 compounds including 5 novel compounds such as caper alkali A, and so on; the extract 2 contains 18 compounds such as a para hydroxybenzoic acid, and so on ; and the extract 3 contains 18 compounds including 5 novel compounds such as the caper alkali A, and so on. As proved by pharmacodynamic experiments, the extract 1, the extract 2 and the extract 3 have analgesic and anti-inflammatory activity, and can be used for preparing medicines for treating rheumatic arthritis, rheumatoid inflammation or scapulohumeral periarthritis.

A method of treating or protecting a mammalian teat by applying a topical composition to the teat, wherein the topical conditioning composition comprises (a) citrate; (b) methylene blue; and (c) an alkyl para-hydroxybenzoate; as well as related methods and compositions.

The invention provides a liquid crystal polymer which is prepared by polycondensing para-hydroxybenzoic acid, 2,6-naphthalic acid, 6-hydroxy-2-naphthoic acid and 4,4-dihydroxybenzophenone. The invention also provides a preparation method of the liquid crystal polymer. Besides, the invention also provides liquid crystal polymer composite materials containing the liquid crystal polymer. The melting point of the liquid crystal polymer is moderate, and the processing temperature range is widened; and ketone characteristic groups are introduced into the polymer chain, thereby enhancing the comprehensive mechanical properties of the polymer. Further more, the preparation method of the liquid crystal polymer is simple, has the advantage of easily controlled reaction end point, and can ensure the reproducibility of the polymer quality. In addition, the liquid crystal polymer can be used as a resin for preparing multiple liquid crystal polymer composite materials.

The invention belongs to the technical field of preparation of polyacid-based fluorescent probe materials and provides an organic-inorganic heteropolyacid-based rare earth derivative. The molecular formula of the heteropolyacid-based rare earth derivative is [N(CH3)4]3K2[Eu(C7H5O3)(H2O)2(alpha-PW11O39)]7H2O. The preparation method comprises the following steps: proportionally mixing EuCl3.6H2O, ap-hydroxybenzoic acid ligand and a polyacid precursor K14[P2W19O69(H2O)]24H2O, dissolving the mixture in water, and performing a reaction under a water bath condition. The fluorescent emission behavior of the polyacid-based rare earth derivative in a water solution is explored, and it is found that organic ligands in the material can effectively absorb energy and sensitize Eu <3+> ions to emit light. In addition, the fluorescence emission behavior of the polyacid-based rare earth derivative in Cr <3+> metal ion water solutions with different concentrations is detected, and the phenomenon of fluorescence intensity quenching is found. The polyacid-based rare earth derivative can be used as a fluorescent probe material to detect the concentration of Cr <3+> metal ions in an aqueous solution.

The invention provides a preparation method of 4, 4'-dihydroxy benaophenonel. The preparation method includes: with phosphorus oxychloride and aluminum trichloride as catalysts and dimethyl sulfoxide as solvent, subjecting hydroxybenzoic acid and phenol to synthetic reaction to obtain 4, 4'-dihydroxy benaophenonel. According to the preparation method, with the dimethyl sulfoxide as solvent, the hydroxybenzoic acid and the phenol are subjected to synthetic reaction under the action of the catalysts, and the 4, 4'-dihydroxy benaophenonel is generated; accordingly, the cost is reduced, production cycle is shortened, and no waste causing environmental pollution is generated during the reaction process so that environmental pollution is also reduced.

TPA-DHD can be produced by using, as a raw material, terephthalic acid salt that contains 0.5 times or more and twice or less the amount of potassium based on all of the terephthalic acids contained in the terephthalic acid salt in terms of moles and by using a microorganism expressing terephthalate 1,2-dioxygenase. Further, TPA-DHD can be converted into protocatechuic acid by TPA-DHD dehydrogenase and protocatechuic acid can be converted into gallic acid by para-hydroxybenzoate hydroxylase. In addition, by subjecting waste polyesters to heat treatment in an ethylene glycol solvent or 1-butanol solvent containing potassium hydroxide, such polyesters can be efficiently depolymerized, and potassium terephthalate suitable to chemical production by the microorganism can be prepared.

The present invention relates to a preparation for external application for curing wound of skin. Its prescription composition contains stearic acid, glyceryl monostearate and glycerin as basic medicinal raw material, and contains special additives, such as rare earth cerium salt, ribose and soluble silver salt compound, etc. and its preparation method includes the following steps: heating stearic acid 14% and glyceryl monostearate 3% (oil phase) and melting them, heat-insulating at 70-90 deg.C for 1 hr; adding glycerin 5% into distilled water 74% (water phase) heating to 70-92 deg.C or adding sodium hydroxide 1% into distilled water and dissolving, then adding glycerin 5% (water phase), heating to 70-90 deg.C, slowly adding oil phase, stirring and cooling, adding rare earth cerium salt, ribose and soluble silver salt.

The invention provides a joint detection method for 12 preservatives in foods and belongs to the technical field of detection of preservatives. The detection method comprises the following steps: mixing a sample, acid liquor and water according to a ratio of 1-3(mL or g)1mu mol:10-30ml so as to form a sample liquid; mixing the sample liquid and D4-diethyl hydroxybenzoate internal standard substance according to a ratio of 1mL:15-25mu g, adding sodium chloride into the mixed liquid so as to be saturated, mixing the saturated sodium chloride solution with acetonitrile, and performing solid-liquid separation so as to obtain an acetonitrile phase; mixing the acetonitrile phase and a cleaning agent and performing solid-liquid separation so as to obtain the supernatant, wherein the cleaning agent is composed of C18, graphitized carbon and neutral alumina according to a mass ratio of (18-23):1:(25-35); and performing GC / MS analysis on the supernatant. Multiple preservatives are subjected to joint detection, the detection quantization limit is 1mg / kg, and the detection limit is 0.3mg / kg. The method has the advantages of wide detection range, simplicity and convenient in operation and low detection limit.

The invention discloses a flame-retardant polyamide fiber. The flame-retardant polyamide fiber is obtained by melt spinning of a polyamide copolymer. A preparation method of the polyamide copolymer comprises the following steps that chlorinated paraffin reacts with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin, the carboxyl-containing chlorinated paraffin is acylated and reacts with 5-hydroxyisophthalic acid or 2,5-dihydroxy terephthalic acid to prepare chlorinated paraffin modified binary acid through esterification reaction, then acylation is carried out, chlorinated paraffin modified 2,5-dihydroxy terephthaloyl chloride reacts with 1,3-propane diamine to prepare chlorinated paraffin modified diamine, then the chlorinated paraffin modified diamine reacts with chlorinated paraffin modified 2,5-dihydroxy terephthaloyl chloride to prepare a polyamide low polymer, finally, the polyamide low polymer and polyamide prepolymer are copolymerized to obtain the chlorinated paraffin modified polyamide copolymer, and the prepared flame-retardant fiber has good mechanical properties and flame retardance and heat resistance.

The invention discloses a cross-linked polymer flame retardant and a preparation method thereof. The preparation method of the flame retardant comprises the following steps: reacting chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin, acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin, then, carrying out esterification reaction with tris(2-hydroxyethyl)isocyanurate to obtain hydroxyl-containing isocyanurate modified chlorinated paraffin, then reacting with tetrabromophthalic anhydride to form novel binary acid and performing polycondensation with tris(2-hydroxyethyl)isocyanurate to form macromolecular flame retardant. The preparation method has the advantages that the operation is simple, the raw material source is wide, the reaction condition is mild, the industrial production is met, and the prepared macromolecular flame retardant has excellent flame-retardant performance dueto the synergistic effect of flame-retardant elements of chlorine, bromine and nitrogen and has good migration resistance.

The invention discloses pyrazine eutectic, a preparation method and application thereof in cigarettes. The pyrazine eutectic is characterized in that a basic structure unit 2-methylpyrazine-p-hydroxybenzoic acid-eutectic [C5H6N2.(C7H6O3)2] is formed by a 2-methylpyrazine molecule and two p-hydroxybenzoic acid molecules, and is structurally represented; the spice eutectic is an orthorhombic crystal system and the space group is Pbca. The invention also provides the preparation method of the eutectic. 2-methylpyrazine and p-hydroxybenzoic acid are volatilized and crystallized in solvents such as methanol and alcohol and the like according to the molar ratio of 1:1-1:5. The eutectic spice disclosed by the invention can be cracked into pyrazine components with burnt fragrance by thermal cracking research in the burning and absorbing simulation process. After the eutectic spice is applied in flavoring of tobaccos, the fullness of smoke, can be improved, the flavor of the tobaccos can be regulated, so that the fragrance is more vivid and more colorful, the release can be stable and the smoking quality can be improved.

The invention provides a fatting agent with a formaldehyde removal function and a preparation method of the fatting agent. The fatting agent with the formaldehyde removal function is prepared from hydroxyl grease and cashew nut oil through esterification, epoxidation, sodium hydrogen sulfite sulfonation and compounding. By using a chemical method, a phenolic compound is subjected to self-emulsifying modification to obtain a leather chemical product with formaldehyde removal and fat liquoring functions. The preparation method is simple in process; and the fatting agent with the formaldehyde removal function, prepared by using the preparation method has a good formaldehyde removal effect and a good fat liquoring performance.

The invention discloses a synthesis method of bromoxynil octanoate, which comprises the following steps: dissolving p-hydroxybenzoic acid in methanol to form a first solution, and adding bromine and hydrogen peroxide into the first solution to obtain 3,5-dibromo-4-hydroxybenzoic acid; then reacting the 3,5-dibromo-4-hydroxybenzoic acid with capryloyl chloride to obtain 3,5-dibromo-4-capryloxybenzoic acid; dissolving triphosgene in toluene to form a second solution, dissolving the 3,5-dibromo-4-capryloxybenzoic acid in toluene to form a third solution, mixing the second solution and the third solution to obtain a fourth solution containing 3,5-dibromo-4-capryloxy benzoyl chloride, and introducing ammonia gas into the fourth solution to obtain 3,5-dibromo-4-capryloxybenzamide; and dissolvingtriphosgene in toluene to form a fifth solution, dissolving 3,5-dibromo-4-capryloxybenzamide in toluene to form a sixth solution, and mixing the fifth solution and the sixth solution to obtain bromoxynil octanoate. The raw materials are p-hydroxybenzoic acid, bromine, hydrogen peroxide, capryloyl chloride and triphosgene, so that the production pollution is small.

The invention discloses a single-component antifouling corrosion-resistant coating and a preparation method thereof. The antifouling and corrosion-resistant coating comprises a novel alkyd resin. The preparation method of the alkyd resin comprises the following steps: reacting chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin; acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin; then carrying out esterification reaction on the fluorine-containing chlorinated paraffin monohydric alcohol and 2,2,3,3,4,4-hexafluoro-1,5-pentanediol to obtain fluorine-containing chlorinated paraffin monohydric alcohol; reacting the fluorine-containing chlorinated paraffin binary acid with 4,4'-oxydiphthalic anhydride to prepare fluorine-containing chlorinated paraffin binary acid; reacting with epoxy chloropropane to prepare a fluorine-containing chlorinated paraffin epoxy compound; and finally, carrying out the reaction with soya oil acid and soya oil acid acyl chloride to prepare the alkyd resin. The preparation method is simple to operate, wide in raw material source and capable of meeting industrial production. The prepared alkyd resin is used for preparing an antifouling and corrosion-resistant coating, and due to introduction of hydrophobic fluorine atoms and a cross-linking reaction of chlorinated paraffin, excellent waterproof, oil-proof and corrosion-resistant properties can be provided for the coating.

TPA-DHD can be produced by using, as a raw material, terephthalic acid salt that contains 0.5 times or more and twice or less the amount of potassium based on all of the terephthalic acids contained in the terephthalic acid salt in terms of moles and by using a microorganism expressing terephthalate 1,2-dioxygenase. Further, TPA-DHD can be converted into protocatechuic acid by TPA-DHD dehydrogenase and protocatechuic acid can be converted into gallic acid by para-hydroxybenzoate hydroxylase. In addition, by subjecting waste polyesters to heat treatment in an ethylene glycol solvent or 1-butanol solvent containing potassium hydroxide, such polyesters can be efficiently depolymeried, and potassium terephthalate suitable to chemical production by the microorganism can be prepared.

The present invention relates to a preparation for external application for curing wound of skin. Its prescription composition contains stearic acid, glyceryl monostearate and glycerin as basic medicinal raw material, and contains special additives, such as rare earth cerium salt, ribose and soluble silver salt compound, etc. and its preparation method includes the following steps: heating stearic acid 14% and glyceryl monostearate 3% (oil phase) and melting them, heat-insulating at 70-90 deg.C for 1 hr; adding glycerin 5% into distilled water 74% (water phase) heating to 70-92 deg.C or adding sodium hydroxide 1% into distilled water and dissolving, then adding glycerin 5% (water phase), heating to 70-90 deg.C, slowly adding oil phase, stirring and cooling, adding rare earth cerium salt, ribose and soluble silver salt.

The invention discloses a synthesis method of p-hydroxybenzonitrile, specifically: uniformly dispersing p-hydroxybenzoic acid, urea, dehydrating agent, and dehydration catalyst in an inert high-boiling solvent, then heating for reaction, and filtering after reaction, The filtrate was obtained, and the filtrate was rectified under reduced pressure to crystallize to obtain p-hydroxybenzonitrile. The invention can greatly reduce the amount of dehydrating agent while ensuring good dehydration effect, and also greatly reduce the generation of solid waste and improve the reaction yield.

The invention discloses a method for extracting the chemical components of betel nut seeds, which is obtained by co-separating the ethyl acetate part of the methanol extract of betel nut seeds by adopting modern separation methods such as recrystallization, silica gel column chromatography, and Sephadex LH-20 gel column chromatography. The chemical structures of 10 compounds were identified using modern spectroscopy techniques, and they are: Helicia cerebroside A (1),( R )- N -((2 S ,3 S ,4 R , Z )‑3,4‑dihydroxy‑1‑(((2 R ,3 R ,4 S ,5 S ,6 R )‑3,4,5‑trihydroxy‑6‑(hydroxymethyl)tetrahydro‑2 H ‑pyran‑2‑yl)oxy)octadec‑8‑en‑2‑yl)‑2‑hydroxydocosanamide (2), (2 S ,3 R )‑Catechin (3), Isorhamnetin (4), β ‑Sitosterol (5), β‑ Carotin (6), stigmaster-4-en-3-one (7), vanillic acid (8), cyclo-(leucine-tyrosine) (9) and p-hydroxybenzoic acid (10). The structural types of the isolated compounds include phenols, flavonoids, steroids, cerebrosides and cyclic dipeptides, among which cerebrosides were reported in this genus for the first time.

The invention discloses a method for repairing cadmium-contaminated soil with peacock grass-corn intercropping. The restoration steps include: (1) planting peacock grass seedlings and corn seedlings in the middle of cadmium-contaminated farmland soil in spring, and regularly fertilizing and watering; (2) Configure the repair promoting liquid, and water the repair promoting liquid on the roots of Malacock grass 1 to 2 days after each fertilization; (3) Harvest respectively after Malachite grass and corn are mature; The repair promoting liquid is p-hydroxybenzoic acid, glycine, Aqueous solution of potassium nitrate and grape seed‑rhubarb complex extract. In the present invention, through the intercropping of malachite and corn, the repairing promotion liquid configured by the present invention is used to water malachite, so that the Cd content in malachite is significantly higher than that of the single cropping of malachite or the intercropping without irrigation of the repairing promotion liquid, corn The content of corn kernels was lower than the Cd content of corn kernels in single cropping.

The invention discloses a lidocaine-based hydrophobic deep eutectic solvent, a preparation method and application thereof, and belongs to the technical field of extraction, separation and enrichment of large cationic compounds. The main points of the technical scheme of the present invention are: a hydrophobic deep eutectic solvent based on lidocaine, which uses lidocaine as a hydrogen bond acceptor and n-octyl p-hydroxybenzoate as a hydrogen bond The donor is synthesized according to the molar ratio of 1:0.25~3. The invention also specifically discloses the preparation method of the lidocaine-based hydrophobic deep eutectic solvent and its application in extracting rhodamine B, methyl violet or / and malachite green in aqueous solution. When the hydrophobic deep eutectic solvent prepared by the invention is used as an extractant, it has the advantages of simple synthesis, stable performance, low toxicity, high extraction efficiency and the like.

The invention discloses a steel structure fireproof epoxy coating which comprises epoxy resin with a flame-retardant function, and a preparation method of the epoxy resin comprises the following steps: preparing carboxyl-containing chlorinated paraffin through reaction of chlorinated paraffin and p-hydroxybenzoic acid, acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin, carrying out a reaction on chlorinated paraffin containing phosphorus-containing isocyanurate and [(6-oxo-6H-dibenzo[C, E][1, 2]oxophosphohexyl-6-yl)methyl] butanediol, acylating a product, carrying out an esterification reaction on the acylated product and tris(2-hydroxyethyl)isocyanurate to obtain chlorinated paraffin containing phosphorus-containing isocyanurate modified chlorinated paraffin, and carrying out a reaction on the chlorinated paraffin containing phosphorus-containing isocyanurate modified chlorinated paraffin containing phosphorus, tetrafluoroterephthaloyl chloride and epoxy chloropropane to prepare the epoxy resin. The prepared fireproof coating for the steel structure has excellent flame-retardant performance due to the synergistic effect of flame-retardant elements including phosphorus, fluorine, chlorine and nitrogen.

The invention discloses a heat-resistant flame-retardant polyvinyl chloride board which comprises a novel flame retardant, and a preparation method of the flame retardant comprises the following steps: firstly, preparing carboxyl-containing chlorinated paraffin by reacting chlorinated paraffin with p-hydroxybenzoic acid, then acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin, and then reacting the acyl chloride-containing chlorinated paraffin with 10-(2,5-dihydroxyphenyl)-10-hydrogen-9-oxa-10-phosphaphenanthrene-10-oxide, and when the flame retardant is used for preparing the heat-resistant flame-retardant polyvinyl chloride plate, the material can be ensured to have good mechanical properties, processability and high temperature resistance, and also has very good flame retardancy, and the cost is low.

The invention provides a corrosion-resistant and high-strength anisotropic welding material. The welding material is characterized by being prepared from components in percentage by mass as follows: 50%-70% of Sn, 10%-40% of Bi, 5%-20% of Pb, 0.1%-1% of Mn, 0.1%-2% of Ca and 5%-20% of a liquid crystalline polymer; and the thermotropic liquid crystalline polymer is wholly aromatic copolyester withp-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, terephthalic acid, resorcinol and 4,4'-dihydroxybiphenyl as polymerization monomers and has the melting point being 300-380 DEG C, the ratio of Bi toPb is 2:1, and the ratio of Sn to the liquid crystalline polymer is 10:1. The welding material has outstanding corrosion resistant capability and excellent mechanical property, is simple to prepare,contains few components and is suitable for industrial production.

The invention discloses a heat-resistant and flame-retardant polyvinyl chloride leather material, which comprises a novel flame retardant. A preparation method of the flame retardant comprises the following steps of: reacting chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin, acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin, carrying out esterification reaction on the acyl chloride-containing chlorinated paraffin and [(6-oxo-6H-dibenzo [C, E] [1, 2] oxophosphahexylhexane-6-yl) methyl] butanediol to obtain hydroxyl-terminated phosphorus-containing chlorinated paraffin, acylating the hydroxyl-terminated phosphorus-containing chlorinated paraffin, and reacting the acylated hydroxyl-terminated phosphorus-containing chlorinated paraffin with tris (2-ethoxyl) isocyanurate and tetrafluoroterephthaloyl dichloride to obtain the novel flame retardant. When the flame retardant is used for preparing the heat-resistant and flame-retardant polyvinyl chloride leather material, it is ensured that the material has good mechanical properties, processability and high-temperature resistance, also has very good flame retardancy and is low in cost.

The invention discloses a manufacturing method and application of a p-hydroxy benzoate molecular imprinting electrochemical sensor based on nano-silver modification. The manufacturing method comprisesthe following steps: immersing a glassy carbon electrode into newly prepared nano-silver sol to modify; taking o-phenylenediamine as a functional monomer and taking hydroxybenzoic acid as a templatemolecule, obtaining an o-phenylenediamine polymer membrane imprinted by p-hydroxy benzoate molecules on the glass carbon electrode modified by nano-silver through electrochemical polymerization; and removing p-hydroxy benzoate template molecules from the o-phenylenediamine polymer membrane imprinted by p-hydroxy benzoate molecules to obtain the p-hydroxy benzoate molecular imprinting electrochemical sensor based on nano-silver modification. The manufacturing method expands detecting linear range of the sensor, remarkably improves sensitivity of the sensor, greatly reduces detection limit of the sensor, improves selectivity of the sensor and is strong in capacity of resisting disturbance. The method is simple, is convenient to operate, is low in cost, is convenient in detected sample pretreatment and is low in cost.

A preparation method of polyarylates based on 2-(3-hydroxy-4-methoxyphenyl)-6-carboxypyridoimidazole, the present invention relates to a preparation method based on 2-(3-hydroxy-4-methoxyphenyl) The invention discloses a preparation method of a polyarylate of phenyl)-6-carboxypyrimidazole, in order to solve the problems of unsatisfactory mechanical properties of liquid crystal polyarylate and complicated preparation steps. Preparation method: 1. Add p-hydroxybenzoic acid and 2-(3-hydroxy-4-methoxyphenyl)-6-carboxypyridoimidazole, acetic anhydride and 2-butylaminopyridine and antioxidant into the polymerization kettle , the prepolymer of thermotropic liquid crystal polyarylate is prepared by melt polycondensation; 2. The prepolymer is placed under nitrogen protection in a rotary kiln for solid-phase polycondensation to obtain high molecular weight polymer powder; 3. High molecular weight polymer powder After kneading, cooling, and drawing to prepare nascent polyarylate; 4. Heat treatment of the nascent polyarylate. The preparation method of the thermotropic liquid crystal polyarylate of the present invention is simple to operate, and the tensile strength of the finally obtained polyarylate can reach 90-150 MPa.

The invention discloses a heat-stress-resistant compound feed for whitmania pigra and a preparation method of the heat-stress-resistant compound feed, and belongs to the technical field of feeds. The heat stress resistant compound feed for whitmania pigra consists of the following raw materials in parts by mass: 20-30 parts of snail meat, 20-30 parts of freshwater mussel meat, 5-15 parts of fly maggots, 5-15 parts of fish meal, 0.1-0.5 part of agar, 0.1-0.5 part of methyl parahydroxybenzoate, 0.2-1 part of compound vitamins, 0.02-0.05 part of compound trace elements, 0.5-2 parts of a Chinese herbal medicine additive, 1-5 parts of a phagostimulant and 5-15 parts of water, wherein the Chinese herbal medicine additive is prepared from astragalus membranaceus, honeysuckle and purple flower according to the mass ratio of (3-7): (1-2): (1-2). The problems that in the prior art, the heat resistance of the whitmania pigra is weak, and the survival rate is low in high-temperature seasons can be effectively solved, and meanwhile, the compound feed has the characteristics of being good in palatability, promoting the growth of the whitmania pigra and the like.

The present invention disclosed a method of preparing a LCD polymer that contains 40-80 mol%of the structural unit (Ⅰ), 10 ~ 30 mol's structural unit (Ⅱ), and 10 ~ ~ 10 ~ 30 mol.The structure unit (Ⅲ) of 30mol %, including the following steps: under the presence of the alumin agent and phospholic acid compounds, the monomers of the structural units represented by the formula (I), (Ⅱ), and (III) respectivelyThe LCD polymer is prepared to be prepared for the hydraulic reactions and ester exchange reactions.The LCD polymer of the present invention does not need to add stabilizers to modified by melting co -mixing. It is the introduction of vicinate compounds during the synthesis process, so that the prepared liquid crystal polymers themselves have good heat resistance stability, and and of.In the process of completing the filler or molding processing, it will not produce black impurities even if it is exposed to high temperature, which can be used to prepare molds.

The invention discloses a heat-resistant flame-retardant polyvinyl chloride cable material. The polyvinyl chloride cable material comprises a novel flame retardant, wherein the preparation method of the flame retardant comprises the following steps: carrying out a reaction on the chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin; acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin; then, carrying out esterification reaction with tris(2-hydroxyethyl)isocyanurate to obtain isocyanurate modified chlorinated paraffin; and performing a reaction with tetrabromophthalic anhydride and tetrabromobisphenol A epoxy resin to prepare the novel flame retardant. The novel flame retardant is used for preparing the heat-resistant flame-retardant polyvinyl chloride cable material, so that the cable material not only has good mechanical property, processability and high-temperature resistance, butalso has very good high-flame-retardant property and is low in cost when used for preparing the heat-resistant flame-retardant polyvinyl chloride cable material.

The invention discloses a fireproof epoxy coating for a steel structure. The epoxy coating comprises epoxy resin with a flame-retardant function. A preparation method of the epoxy resin comprises the following steps of: reacting chlorinated paraffin with p-hydroxybenzoic acid to prepare carboxyl-containing chlorinated paraffin, acylating the carboxyl-containing chlorinated paraffin to obtain acyl chloride-containing chlorinated paraffin, reacting the acyl chloride-containing chlorinated paraffin with dibromo neopentyl glycol, carrying out acylation on a product, carrying out esterification reaction on the acylated product and tris (2-hydroxyethyl) isocyanurate to obtain phosphorus-containing isocyanurate modified chlorinated paraffin, and reacting the phosphorus-containing isocyanurate modified chlorinated paraffin with [(6-oxo-6H-dibenzo [C, E] [1, 2] oxophosphohexane-6-yl) methyl] succinyl chloride and epichlorohydrin to obtain the epoxy resin. The prepared fireproof coating for a steel structure has excellent flame-retardant performance due to the synergistic effect of flame-retardant elements including phosphorus, bromine, chlorine and nitrogen.