86 results about "Polyhydroxy compound" patented technology

The invention relates to a high-strength wear-resistant archaized brick and a preparation method thereof, and belongs to the technical field of archaized bricks, the high-strength wear-resistant archaized brick comprises the following raw materials: 25-30 parts of fly ash, 30-35 parts of superfine slag powder, 30-35 parts of clay, 8-10 parts of coke powder, 10-12 parts of diatomite, 12-15 parts of potassium feldspar, 10-15 parts of a modified binder and 8-12 parts of a reinforcing agent; according to the technical scheme, a polyhydroxy compound is combined with a silanization reinforcing filler, then combined with an anhydride compound and then combined with novolac epoxy resin, then an amine curing agent is added, and curing is conducted to obtain the modified binder; fly ash, superfine slag powder, clay and coke powder are subjected to ball milling, diatomite, potassium feldspar, a modified binder and a reinforcing agent are added, and the high-strength wear-resistant archaized brick is obtained through stirring, calcining and compression molding. The mechanical property, thermal stability and wear resistance of the archaized brick are improved on the whole, the densification degree of the archaized brick is enhanced, and the comprehensive performance is good.

The invention relates to the technical field of green hydrogen production, in particular to a green hydrogen production system coupling biomass electrooxidation and water reduction, which comprises a pretreatment unit, a photovoltaic power generation unit and an electrolytic bath, the pretreatment unit is used for dissolving a polyhydroxy compound in an alkaline aqueous solution to form an alkaline electrolyte containing the polyhydroxy compound; the photovoltaic power generation unit is used for providing electric energy for the electrolysis process in the electrolytic cell, the electrolytic cell comprises a shell, an ion exchange membrane, an anode plate and a cathode plate, the ion exchange membrane divides the shell into an anode chamber and a cathode chamber, the anode plate is electrically connected with the positive electrode of the photovoltaic power generation unit, and the cathode plate is electrically connected with the negative electrode of the photovoltaic power generation unit. The shell is provided with a seawater inlet and a hydrogen outlet which are communicated with the cathode chamber, and the shell is provided with a compound inlet and a chemical outlet which are communicated with the anode chamber. According to the scheme, chemicals are obtained from the anodes, the safety is high, the cell voltage needed for driving the whole electrolysis process is greatly reduced, and the energy consumption of the whole electrolysis hydrogen production process is small.

The invention discloses a medical pressure-sensitive adhesive patch based on citric acid, a preparation method and application, the medical pressure-sensitive adhesive patch is composed of an adhesion layer and an anti-adhesion layer, and the thickness ratio of the adhesion layer to the anti-adhesion layer is 1: 1-100: 1; the adhesion layer is obtained by polymerizing a citric acid unit and a polyhydroxy compound unit; the hydrophobic high-molecular polymer is selected from at least one of a polylactic acid-glycolic acid copolymer, polylactic acid, polyurethane and polyether urethane. According to the preparation method, three carboxyl groups in the citric acid not only can be used for esterification reaction with polyhydric alcohols to form a network, but also can provide excellent adhesive force for contact between the adhesive patch and the tissue surface through electrostatic interaction or hydrogen-bond interaction. The anti-sticking layer prepared from the hydrophobic high-molecular polymer can effectively resist invasion of external moisture and bacteria, so that the service time of the adhesive patch is prolonged; meanwhile, the anti-sticking layer can also play a supporting role, so that the mechanical strength of the adhesive tape is improved.

The invention relates to the technical field of sensing of magnetic nano photoelectric materials, in particular to a responsive microsphere based on a three-dimensional magnetic photonic crystal and a preparation method and application thereof, and the responsive microsphere is formed by arranging polyhydroxy compound modified magnetic nanoparticles in a spherical polymer into a non-close packing face-centered cubic or body-centered cubic structure. The responsive microsphere based on the three-dimensional magnetic photonic crystal is easy in color distinguishing, has no angle dependence, does not need to depend on a fluorescent dye or a radioactive label, can realize real-time and in-situ monitoring through own optical characteristics, breaks through the bottlenecks of sensitivity and resolution of a traditional sensor, realizes visual detection, simplifies the detection process, and is suitable for mass production. The cost is reduced. According to the responsive microsphere based on the three-dimensional magnetic photonic crystal, the substance diffusion path is shortened through the small size of the responsive microsphere, and the response speed is remarkably increased in combination with the high specific surface area.

The invention belongs to the technical field of high polymer materials, and particularly relates to a composition, a mixed plastic dynamic crosslinking material and a preparation method and application thereof. The composition comprises the following components in parts by mass: 100 parts of a heterochain polymer; 5 parts by mass to 2000 parts by mass of polyolefin; 1 part by mass to 200 parts by mass of a polyhydroxy compound; 1 to 200 parts by mass of a grafting agent; and 0.25 to 40 parts by mass of a radical initiator. The mixed plastic dynamic cross-linking material prepared by utilizing the composition through a chain scission-grafting-dynamic cross-linking multi-step synergistic strategy has excellent thermal, mechanical and reprocessing properties.

The invention provides a carrier material as well as a preparation method and application thereof, the preparation method of the carrier material comprises the following steps: 1) mixing a mixed solution containing a polyhydroxy compound and / or a polyamine compound, polycarboxylic acid and a metal source with a porous material to obtain a mixed system; wherein the mass of the mixed solution is 40-60% of the mass of the porous material; and 2) carrying out post-treatment including polymerization treatment, drying treatment and roasting treatment on the mixed system to obtain the carrier material. According to the preparation method of the carrier material provided by the invention, metal ions enter the pore channels of the porous material, the metal material can be uniformly distributed on the inner surfaces of the pore channels under the pore channel confinement effect, and the carrier material is applied to a catalyst, so that the temperature of a catalytic oxidation reaction of a volatile organic compound can be reduced.

The application discloses a kind of sulphur-containing polydopamine melanin nanoparticles and preparation method and application, preparation raw materials include polyhydroxy compound and sulphur-containing compound, the weight ratio of the polyhydroxy compound and the sulphur-containing compound is (1-100) :(1-100), the preparation raw materials also include water, organic solvent and acid-base regulator.The application occurs self-polymerization reaction under alkaline condition with dopamine and sulphur-containing compound, without additional crosslinking agent and oxidant, and the nanoparticles obtained have excellent photothermal performance.In photothermal therapy, biomedical imaging, water purification, functional coating and other aspects, it shows great application potential.And preparation reaction condition is mild, without additional catalyst and oxidant, process is safe, post-processing is simple, and no harmful waste water and waste residue to environment, meet the requirements of green chemistry.

This application relates to the field of epoxy resins, and more particularly to a flexible, yellowing-resistant epoxy resin composition, its preparation method, and its application. The flexible, yellowing-resistant epoxy resin composition comprises one or more carbocyclic compounds represented by general formula (I) and one or more carbocyclic compounds represented by general formula (II); in general formulas (I) and (II): R1 and R2 are each independently selected from -H or C1-C. 20 The alkyl chain; R3 is independently selected from isocyanate compounds having two -NCO groups in the molecule; R4 is selected from polyhydroxy compounds containing -OH in the molecule. The flexible, yellowing-resistant epoxy resin composition of this application, in addition to having excellent molecular flexibility and solving the problems of warping, cracking, shrinkage, and defects caused by epoxy brittleness, can also maintain its original yellowing resistance.

The invention provides epoxy modified bio-based degradable saturated polyester synthesis and application thereof, and belongs to the technical field of polyester synthesis, and the synthesis method comprises the following steps: carrying out condensation polymerization on bio-based dicarboxylic acid, a polyhydroxy compound and aliphatic dihydric alcohol, and then carrying out modification treatment by using boron nitride doped epoxy resin to obtain the biodegradable saturated polyester. The polyhydroxy compound is one of pentaerythritol and trimethylolpropane or a mixture of the pentaerythritol and the trimethylolpropane. When the prepared epoxy modified bio-based degradable saturated polyester is applied to a substrate coating for 3D printing, the substrate coating and a 3D product can keep relatively high bonding strength at normal temperature, and meanwhile, the epoxy modified bio-based degradable saturated polyester is quickly softened and loses adhesive force at high temperature, so that high-strength bonding and efficient separation of the 3D product and a substrate are realized.

The invention discloses a foamed thermoplastic polyurethane insole and a preparation method thereof. The raw material composition of the foamed thermoplastic polyurethane shoe insole comprises thermoplastic polyurethane, the raw material composition of the thermoplastic polyurethane contains or does not contain a cross-linking agent, and when the raw material composition of the thermoplastic polyurethane does not contain the cross-linking agent, the raw material composition of the foamed thermoplastic polyurethane shoe insole further comprises the cross-linking agent; the cross-linking agent comprises one or more than two of polyisocyanate, a polyhydroxy compound and a polyamino compound; the polyisocyanate contains at least three isocyanate groups; the polyhydroxy compound contains at least three hydroxyl groups; the polyamino compound contains at least three amino groups. The preparation method can adopt a small blank foaming process. When the cross-linking agent is used for preparing the foamed thermoplastic polyurethane shoe midsole by a small blank foaming process, the shrinkage of a shoe wall during hot pressing can be prevented, and one or more than two properties of tensile strength, elongation at break and layered tearing strength of the foamed thermoplastic polyurethane shoe midsole can be improved.

The application relates to a method for preparing natural gas by taking biomass and polyhydroxy compounds as raw materials. The method comprises the following steps: mixing the raw materials with water and a catalyst, and carrying out a reduction reaction in a reducing atmosphere to obtain a product containing natural gas; the raw materials are selected from biomass raw materials or / and polyhydroxy compounds; the biomass raw materials are selected from at least one of beech sawdust, poplar sawdust, pine sawdust, birch sawdust, wheat straw or corn straw; the polyhydroxy compounds are selected from at least one of cellulose, hemicellulose, cellobiose, xylose, guaiacol, sorbitol, isosorbide, glycerol, erythritol, xylitol or glucose; the catalyst comprises a carrier and an active component loaded on the surface of the carrier; the active component is selected from metal elements; the metal elements are selected from at least one of the single elements of ruthenium, rhodium, platinum, palladium or iridium. The method provides a path for converting biomass such as sawdust and polyhydroxy compounds to prepare natural gas, and has important industrial application prospects.

The present invention relates to the technical field of concrete materials. Disclosed are a modified epoxy resin and a preparation method therefor, a composition for an epoxy resin grouting material, an epoxy resin grouting material, a preparation method therefor, and a use thereof. The method for preparing the modified epoxy resin comprises: heating a polyhydroxy compound and an epoxy resin at 80-100ºC in a nitrogen atmosphere in the presence of a catalyst to obtain the modified epoxy resin, wherein the molar ratio of the polyhydroxy compound, the epoxy resin, and the catalyst is 1:1-2:0.05-0.1; the epoxy resin is a bisphenol A epoxy resin; the catalyst is selected from any one of sodium hydroxide, potassium carbonate, and dimethylaniline; and the polyhydroxy compound is selected from at least one of glycerol, ethylene glycol, propylene glycol, glucose, and butylene glycol. The epoxy resin grouting material of the present invention has more excellent toughness and lower viscosity, and good bonding strength and bonding durability with a concrete matrix.

The invention provides a bio-based haplotype dispersant as well as a preparation method and application thereof, and the method comprises the following steps: carrying out transesterification on a compound A as shown in a formula 1 and a polyhydroxy compound to generate a compound B as shown in a formula 2; and carrying out addition reaction on the compound B as shown in the formula 2 and allyl glycidyl ether to generate the bio-based haplotype dispersant as shown in a formula 3. The invention provides a dispersant with high activity, low viscosity, high dispersion efficiency and flexibly controllable reaction activity by taking renewable resources as raw materials.

The invention discloses water-based coating liquid with a gas barrier property, a polymer film and a preparation method of the polymer film. The water-based coating liquid is prepared from the following raw material components: a carboxylic acid compound or a carboxylic ester compound, a polyhydroxy polymer and water. The polymer film comprises a polymer base material and a gas barrier layer arranged on the surface of the polymer base material, and preparation raw materials of the gas barrier layer comprise water-based coating liquid. The polyhydroxy polymer can form a compact structure, so that permeation and diffusion of oxygen molecules are blocked. According to the present invention, the carboxyl group of the carboxylic acid compound and the hydroxyl group of the polyhydroxy compound can generate the esterification reaction, and the ester group of the carboxylic ester compound and the hydroxyl group of the polyhydroxy compound can generate the ester exchange reaction so as to form the cross-linked structure, such that the water resistance and the gas barrier property of the material can be easily enhanced; the polymer film prepared by the invention has excellent gas barrier property, and the oxygen permeability before and after cooking treatment is less than 1cm < 3 > / m < 2 > * day * 0.1 MPa.

This application belongs to the field of display technology and relates to a composition, ink, thin film, light-emitting device, and display apparatus. The composition comprises a polyhydroxy compound and a first metal oxide, wherein the polyhydroxy compounds are interconnected by hydrogen bonds, and the first metal oxide is coordinated with the polyhydroxy compounds. The polyhydroxy compounds can passivate surface defects of the first metal oxide, improving its conductivity, and, after coordination with the first metal oxide, can prevent uneven diffusion of the first metal oxide.

The invention discloses capacitor carbon, which is characterized in that the specific surface area of the capacitor carbon is 1400-2500 m < 2 > / g, and the tap density of the capacitor carbon is 0.35-0.51 g / cm < 3 >. The preparation method of the capacitor carbon comprises the following steps: (1) uniformly mixing a first carbon source, a polyhydroxy compound and a transition metal compound, and activating; (2) removing an activating agent from the activated material; and (3) carrying out heat treatment on the material obtained in the step (2), washing and drying to obtain the capacitor carbon. The invention provides high-tap-density capacitor carbon and a preparation method thereof. The super-capacitor carbon with high tap density and excellent cycle performance is obtained. The problem that in the prior art, a carbon electrode material for an energy storage device is not large enough in tap density is solved.

The application belongs to the technical field of flame retardant synthesis for fiber textiles, and more particularly relates to a preparation method of a precipitation-resistant flame retardant for fiber textile finishing. A small-molecule water-soluble phosphate and a polyhydroxy compound are used for ester exchange reaction, and by controlling process parameters in the ester exchange reaction process, including raw material dosage ratio, reaction temperature, reaction time, removal of by-products by distillation, re-introduction of a nitrogen-containing alkaline compound and adjustment of solution pH, a finishing flame retardant with excellent flame retardant performance, precipitation resistance and washing resistance is prepared, which is particularly suitable for finishing processes such as padding and baking, impregnation and drying. The raw materials used in the preparation method are environmentally friendly and safe, the reaction is more gentle and controllable, the reaction period is short, and the efficiency is high; the precipitation-resistant flame retardant for fiber textile finishing prepared by the above method has the advantages of wide application range, high flame retardant efficiency, semi-durability, little effect on fabric hand feeling and no precipitation.

The application provides a crosslinking agent formed by mixed components; the mixed components include metal salts, organic ligands, surfactants and solvents; the metal salts include zirconium salts and aluminum salts; the organic ligands include alkanolamines, alpha-hydroxycarboxylic acids and polyhydroxyl compounds. Compared with the prior art, the application utilizes zirconium salts, aluminum salts and organic ligands such as alcohol amine and organic acid to form an organic aluminum zirconium crosslinking agent through a coordination complex reaction, which can effectively reduce the amount of a suspended emulsion polymer thickening agent, achieve ultra-low concentration (0.2% of the suspended emulsion polymer thickening agent) crosslinking, has a delayed crosslinking characteristic, can effectively reduce the pipeline construction frictional resistance, can also improve the viscosity of a variable viscosity fracturing fluid system under high temperature and high shear, has a wide viscosity adjustment window, has strong adaptability, meets the requirements of deep shale oil and gas online mixing and large-scale sanding, and has a good application prospect.

The present application relates to the technical field of sensing of magnetic nano-optoelectronic materials, and particularly relates to a responsive microsphere based on three-dimensional magnetic photonic crystals, a preparation method and application thereof, wherein magnetic nanoparticles modified by a polyhydroxy compound are arranged in a non-close-packed face-centered cubic or body-centered cubic structure in a spherical polymer to form the responsive microsphere. The responsive microsphere based on three-dimensional magnetic photonic crystals has an easily distinguishable color, is not angle-dependent, does not need to rely on fluorescent dyes or radioactive labels, and can realize real-time and in-situ monitoring through its own optical properties, thus breaking through the bottleneck of sensitivity and resolution of traditional sensors, realizing visual detection, simplifying the detection process, and reducing the cost. The responsive microsphere based on three-dimensional magnetic photonic crystals shortens the diffusion path of substances through its small size, and significantly improves the response speed in combination with a high specific surface area.

To provide a production method of a compound including an aromatic polyhydroxy compound capable of separating to an oil phase and an aqueous phase by reacting phenol in the presence of a catalyst using hydrogen peroxide and alcohol together, subjecting a reaction mixture to precipitation in a catalyst-separating process at a comparatively high temperature to separate titanosilicate, which is a catalyst, and making an obtained oil water phase an oil-water separable state by cooling to a comparatively low temperature.SOLUTION: A production method of a compound including an aromatic polyhydroxy compound includes: reacting titanosilicate, alcohol, water, an aromatic monohydroxy compound, and hydrogen peroxide to obtain a reaction mixture (R); and thereafter conducting following process (1), and process (2), where the process (2) is conducted after the process (1). The process (1) is a process of precipitating the titanosilicate from the reaction mixture (R) at a temperature of 50°C or higher. The process (2) is a process of separating a compound including an aromatic polyhydroxy compound from an oil phase by subjecting a liquid part (reaction mixture (R1)) of the process (1) to oil-water separation at a temperature of 28°C or higher and 48°C or lower.SELECTED DRAWING: None

This application relates to a blocked isocyanate prepolymer system, its preparation method, and its applications. The blocked isocyanate prepolymer system is prepared by reacting an isocyanate having two or more isocyanate groups sequentially with a blocking agent and a polyhydroxy compound. The blocked isocyanate prepolymer system of this invention can be processed into various products, has a wide range of applications, and exhibits low viscosity even without solvent dilution, which is beneficial for subsequent use.

The invention discloses an impact-resistant electronic component waterproof powder coating and a preparation process thereof, and relates to the technical field of electronic component coatings, the impact-resistant electronic component waterproof powder coating comprises epoxy resin, a curing agent, an inorganic filler, an organosilicon modified hyperbranched polyester flexibilizer and an auxiliary agent; the organic silicon modified hyperbranched polyester toughening agent is prepared by the following steps: carrying out melt polycondensation on a polyhydroxy compound and excessive polybasic acid anhydride which are used as raw materials to construct a carboxyl-terminated hyperbranched polyester core, and partially grafting the core by utilizing polysiloxane containing an epoxy group to introduce a flexible hydrophobic chain segment, so as to obtain the organic silicon modified hyperbranched polyester toughening agent. And carrying out end-capping modification on the residual end carboxyl group by using epoxy chloropropane under an alkaline condition. By constructing a chemically anchored rigid core-flexible shell topological structure, impact energy and thermal stress are effectively dispersed, excellent heat resistance and dimensional stability are maintained while the coating is prevented from cracking, phase separation and water vapor permeation are completely eradicated through a built-in compact hydrophobic network, and lasting and reliable mechanical protection and insulation guarantee are provided.

The application discloses a polyolefin polymerization morphology regulator, a supported metallocene polyolefin catalyst and a preparation method thereof. The structural formula of the polyolefin polymerization morphology regulator is that a linker is connected with A1~A n group, A1~A n group each has at least one hydroxyl group, and n=2~6. The supported metallocene polyolefin catalyst comprises a carrier and a metallocene polyolefin catalyst and the polyolefin polymerization morphology regulator supported on the carrier. The polyolefin polymerization morphology regulator is a polyhydroxyl compound, is an organic substance, can be used for controlling and adjusting the product morphology in polyolefin synthesis, cannot introduce new ash and metal components, and realizes the need for no additional equipment and only needs to use conventional reagents in conventional equipment. Meanwhile, adding the polyolefin polymerization morphology regulator in the catalyst can make the activity of the catalyst more moderate and fully released, and can improve the catalyst activity.

This invention provides a modified starch hydrogel, its preparation method, and its applications, belonging to the field of starch gel technology. The modified starch hydrogel comprises natural starch, water, and a polyhydroxy compound; the water, polyhydroxy compound, and natural starch are cross-linked to form a honeycomb network structure. The modified starch hydrogel provided by this invention has a honeycomb network structure. Compared to pure starch hydrogel, the modified starch hydrogel provided by this invention has a denser gel network structure, smaller pore size, and thicker pore walls, thus exhibiting excellent mechanical properties. Furthermore, the modified starch hydrogel provided by this invention does not use chemical reagents, will not cause harm to the human body, and will not cause environmental pollution.

This invention relates to the field of building materials and concrete admixtures, and particularly to a hydration temperature rise inhibitor, its preparation method, and its application. The hydration temperature rise inhibitor of this invention employs a host-guest supramolecular assembly strategy, using calixarene as the host and polyhydroxy compounds as the guest, constructing a capsule-like composite structure through hydrogen bonding. During cement hydration, calixarene is first adsorbed onto the surface of cement particles, delaying the nucleation and growth stages of cement hydration through interfacial adsorption. Subsequently, the calixarene gradually dissolves and continuously releases polyhydroxy compounds, allowing them to enter the aqueous phase. The released polyhydroxy compounds further effectively inhibit the interfacial reaction process of cement hydration, thereby slowing down the hydration heat release rate, reducing the hydration temperature peak, and achieving regulation of the early hydration temperature rise of cement. The hydration temperature rise inhibitor has wide applicability, significantly reducing the risk of concrete cracking caused by temperature drop shrinkage, and effectively improving the durability and long-term safety of engineering structures.

The present application relates to the field of ethylene glycol preparation, and discloses a method for preparing ethylene glycol. The method comprises the following steps: in the presence of water, a polyhydroxy compound and hydrogen are reacted with a catalyst; the catalyst comprises a metal / COFs material and a tungsten-containing compound; wherein the COFs material in the metal / COFs material is selected from at least one of nitrogen-containing organic framework materials; and the metal in the metal / COFs material is selected from at least one of noble metal elements and nickel elements. The method for preparing ethylene glycol has high ethylene glycol selectivity and yield; and the catalyst used in the method has good cycle stability.

The invention provides a preparation method and application of a ZIF-67 material with a Tailing structure, and belongs to the technical field of preparation of zeolite imidazole metal organic framework materials. According to the preparation method, a polyhydroxy compound is introduced into a cobalt salt solution, the viscosity of a ligand solution is regulated and controlled, and under the action of a halogen ligand, gradient change of the concentration is realized, so that the ZIF-67 material with the Turing structure can be prepared, the Turing structure comprises a surface spot shape and a surface wave shape, and the surface concave-convex depth is 30-50nm. The Turing structure not only increases the specific surface area of the material and exposes more active sites, but also has higher CO2 diffusion rate and improves the catalytic performance. In addition, the halogen-containing 2-methylimidazole ligand can also realize the doping of bromine element in the material, brings a lattice strain effect, and increases the adsorption of the material to CO2. Under the same condition, the conversion rate of the ZIF-67 material prepared by the method is increased by 60.95-63.40% compared with that of the ZIF-67 material prepared by the traditional method.

An optical chip packaging material, the preparation raw materials of the optical chip packaging material include: 50-800 parts by weight of epoxy resin, 10-500 parts by weight of organic silicon hybrid resin, 130-185 parts by weight of anhydride curing agent, 5-20 parts by weight of polyhydroxy compound; the preparation method of the organic silicon hybrid resin includes: under acidic conditions, methyl trialkoxysilane, phenyl trialkoxysilane and silane coupling agent are subjected to hydrolysis reaction to obtain an aqueous phase and an organic phase, monohydroxy-terminated silicone oil is added to the organic phase and then subjected to condensation reaction; the number of carbon atoms of the alkoxy group in the methyl trialkoxysilane is 1-4; the number of carbon atoms of the alkoxy group in the phenyl trialkoxysilane is 1-4. The organic silicon hybrid resin of the application can better react with the epoxy resin, so that the obtained optical chip packaging material can have enhanced heat-resistant stability and light decay resistance, can significantly reduce modulus reduction stress, and can improve the reflow soldering performance of the packaging material.

Provided is a method that makes it possible to produce a modified aluminosilicate more efficiently than conventional methods.　This method for producing a modified aluminosilicate comprises: a first step for obtaining an aluminosilicate (A-1) by bringing a gel-like or sol-like silica, zeolite, and an ammonium salt represented by formula (1) into contact with each other; a second step for treating the aluminosilicate (A-1) obtained in the first step with an acid; and a third step for bringing the product obtained in the second step into contact with a compound including at least one element selected from the group consisting of group-4 elements and group-5 elements in the periodic table, and then drying and sintering the same. (In formula (1), C represents a carbon atom, N+ represents a nitrogen cation, X- represents a halogen anion or a hydroxy anion, R and R1 each independently represent a hydrogen atom or a hydrocarbon group optionally having a heteroatom, m1 and m2 each independently represent an integer of 0-5, n1 and n2 each independently represent an integer of 0-5, the sum of n1 and n2 is 1-10, and R and R1 which are present in a quantity of more than one can bind to each other to form a ring structure.)

The invention provides a 260 DEG C superhigh temperature resistant modified fatty acid oil-based drilling fluid wetting agent as well as a preparation method and application thereof, and belongs to the field of oilfield chemistry in the petroleum industry. The preparation method of the wetting agent comprises the following steps: mixing ricinoleic acid and a base material fatty acid, carrying out dehydration treatment, adding a solid superacid catalyst I, and adding polyol for reaction; after the reaction is finished, filtering to obtain modified fatty acid; carrying out dehydration treatment on the obtained modified fatty acid, adding a solid superacid catalyst II, adding a grafting reagent containing an epoxy group, and carrying out ring-opening grafting reaction; then adding a polyhydroxy compound, and carrying out esterification cross-linking reaction; adding a high-temperature stabilizing aid into the obtained reaction liquid, and carrying out curing treatment; and cooling the obtained filtrate, adding an oil-phase dispersion medium, and uniformly stirring to obtain the oil-phase dispersion medium. The wetting agent provided by the invention can reduce the oil-solid interfacial tension and improve the wettability of the oil-based drilling fluid to drilling cuttings, well wall rocks and weighting materials.