510 results about "Thioether" patented technology

The invention discloses a preparation method for selectively oxidizing thioether into sulfoxide through photo-initiation, and belongs to the field of synthesis of medical compounds. The preparation method comprises the following steps that in the air atmosphere, a thioether compound is dissolved in an acetonitrile-water mixed solvent, inorganic metal salt catalysts such as ferric chloride and copper sulfate are added, the mixture reacts for 8-48 h at the temperature of 0-45 DEG C under illumination with the wavelength of 295-405 nm, selective oxidation is carried out, and the sulfoxide product is obtained, and the molar ratio of thioether to the catalysts is 5: 1. The method overcomes the problems of excessive oxidation risk, complicated operation, environmental pollution and the like caused by dependence of a noble metal catalyst and use of a strong oxidant in the existing thioether oxidation method, has the advantages of high catalytic efficiency, high yield and excellent selectivity, can greatly reduce the production cost, is suitable for later industrial synthesis and amplification, and has wide application prospects. The method has the advantages of no expensive metal catalyst or oxidant, simple preparation process, high efficiency, environmental protection, safety and cost saving.

The invention discloses asphalt-based hard carbon, a preparation method thereof and a sodium-ion battery negative electrode material, and relates to the technical field of sodium-ion batteries. The preparation method of the asphalt-based hard carbon comprises the following steps: S1, mixing an asphalt precursor, a sulfur source and a cross-linking agent, and performing cross-linking vulcanization treatment at a first temperature to obtain a primary product; s2, performing carbonization treatment on the primary product at a second temperature to obtain asphalt-based hard carbon; the sulfur source is any one of elemental sulfur, thiourea, dimethyl sulfide and sulfide, or any two of elemental sulfur, concentrated sulfuric acid, thiourea, dimethyl sulfide and sulfide. By adopting the method, the type of the sulfur source is controlled, and the sulfur source and the cross-linking agent are added, so that the reversible capacity and the rate capability of the asphalt-based negative electrode material can be effectively improved, and the application field of the asphalt-based negative electrode material is widened.

The invention relates to preparation and application of a substituted alkyl sulfide (sulfoxide) arylamine derivative. Specifically, the invention relates to a compound as shown in a formula (I), or an isotope labeled compound thereof, or an optical isomer, a geometric isomer, a tautomer or an isomer mixture thereof, or a pharmaceutically acceptable salt thereof, and an application of the compound in preparation of an acaricide for preventing and controlling pest mites, wherein the compound is used as a substituted alkyl sulfide (sulfoxide)-based arylamine derivative. The compound can achieve a better pest mite control effect at a lower dosage.

The invention discloses a dual-band acridine formic acid anthracene methyl ester photocatalyst as well as a preparation method and application thereof, and belongs to the field of heterocyclic compounds. The invention designs and synthesizes a novel acridine formic acid anthracene methyl ester photocatalyst, which has good compatibility in two wavebands of 365 nm and 405 nm, can realize photocatalysis of disulfide compounds and aryl formyl peroxide compounds, and provides a new thought for preparation of sulfoxide compounds with asymmetric structures; the reaction conditions are mild, the reaction time is short, the photocatalyst can be recycled, the circulation loss is low, the circulation efficiency is high, the production efficiency is greatly improved, and the production period and cost are reduced; the product is free of transition metal residues and high in yield.

The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.

The invention provides a protective coating for a fuel storage and transportation cabin and a preparation method thereof, the protective coating comprises a primer layer, and the primer layer comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of phosphorylated-sulfur heterocyclic modified epoxy resin, 0.1 to 1 part of dispersing agent, 0.1 to 1 part of flatting agent, 0.1 to 1 part of defoaming agent, 0 to 10 parts of n-butyl alcohol, 0 to 10 parts of xylene, 10 to 15 parts of zinc phosphate, 0.5 to 1.0 part of thixotropic agent, 10 to 15 parts of flaky filler, 20 to 35 parts of talcum powder, 5 to 10 parts of barite powder and 3 to 10 parts of titanium dioxide; the component B is prepared from the following raw materials in parts by weight: 99 to 100 parts of amino resin and 0.3 to 0.8 part of a catalyst. Phosphorylation-sulfur heterocycle is utilized to modify epoxy resin, a phosphating group (P-O-C) is generated, the lipophobicity is increased, an intrinsic anti-swelling network is constructed based on a sulfur / phosphorus atom covalent bonding epoxy skeleton, and by utilizing the three-dimensional shielding effect of phosphorus atoms and the high-density cross-linking characteristic of thioether bonds, the anti-swelling performance of the epoxy resin is improved. Fuel oil permeation channels are blocked from the molecular level, pollutant dissolution is inhibited, and it is ensured that the coating has good soaking resistance to fuel oil.

The invention relates to high-heat-resistance polypropylene and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: carrying out Michael addition reaction on 2-sulfydryl-1, 3-propylene glycol and vinyl dibutyl borate to prepare dihydric alcohol containing thioether and phosphate, and carrying out polymerization reaction on 1, 12-dodecanediol, boric acid ester dihydric alcohol and dimethyldichlorosilane to obtain the flame retardant. A polymer containing a borate group, a thioether group, organic silicon and a dodecane glycol ester group is prepared, the polymer is used as a heat-resistant toughening additive of polypropylene, the borate group and the organic silicon can improve the heat resistance and flame retardance of the polypropylene, and the thioether group and the dodecane glycol ester group can provide flexibility; therefore, the polypropylene is ensured to have good mechanical strength, heat resistance and flame retardance at the same time.

The utility model discloses a thin film evaporation device for removing dimethyl sulfide, which comprises a thin film evaporation container main body, the top of the thin film evaporation container main body is provided with a feed port, and the top of the right side of the thin film evaporation container main body is provided with a steam heating external connection pipe used for being externally connected with a steam heater; and a film mesh is arranged in the film evaporation container main body. According to the utility model, the dimethyl sulfide material is spread on the film mesh through the rotating scraper blade to form a film so as to promote evaporation, and the thickness of the film scraped by the scraper blade can be adjusted according to the viscosity of the material and the change of the raw material, so that the situation that the evaporation efficiency is influenced by the too thick or too thin dimethyl sulfide material in the prior art is avoided; and the structure is simple, and adjustment is convenient, so that the scraper blade can flexibly adjust the thickness of the film according to actual changes, the adaptability in evaporation use is improved, and the use requirement for accurate removal of dimethyl sulfide is greatly met.

The application discloses a preparation method of perfluoroalkyl aryl sulfide, and a structural formula of the perfluoroalkyl aryl sulfide is shown as formula (I); the method comprises the following steps: firstly, obtaining corresponding aryl sulphenyl chloride by chlorination of thiophenol; under the condition that fluoride and crown ether exist, obtaining perfluoro-1,1-dimethylbutyl negative ion by addition of D-2 ‑ And the aryl sulphenyl chloride added is subjected to a nucleophilic substitution reaction to synthesize a product (1,1,1,3,3,4,4,5,5,5-decafluoro-2-trifluoromethylpent-2-yl)(aryl)sulfide. The application adopts a reaction strategy of efficient coupling of thiophenol and perfluoroalkyl, and can be used for preparing various fluorine-containing benzene sulfide compounds.

The invention provides a synthesis method of a thioether ligand and a palladium-catalyzed 2-aryl indole compound, and designs an application of the biphenyl thioether ligand and a palladium catalyst in preparation of the 2-aryl indole compound. Indole and arylboronic acid are subjected to a reaction under the action of a palladium catalyst and a biphenyl sulfide ligand, and the structural formula of the biphenyl sulfide ligand is shown in the specification. Ar is phenyl, furyl, thienyl, naphthyl or phenyl substituted by one or more substituent groups; r1 is methyl, methoxyl, fluorine atom, chlorine atom, bromine atom or methyl ester group; r2 is the same or different and is methyl, ethyl, isopropyl, isobutyl, cyclohexyl, benzyl, n-butyl or n-hexyl; r3 is alkoxy, alkylthio, substituted amino or halogen; the palladium catalyst is a divalent palladium compound.

The invention relates to a method for sealing a substrate, comprising at least steps 1) and 3), by applying at least part of a solvent-based composition to a surface of the substrate to at least part form a film (1) on said surface, applying at least part of a sealant composition to the film obtained after step 1) to form a sealant film (3), wherein the sealant composition is obtainable by mixing at least two components A) and B) of a sealing system, which are present separately, with one another, the solvent-borne composition applied in step 1) comprising at least one aliphatic hydrocarbon as an organic solvent component a1) in an amount of at least 70.0 wt.-%, based on the total weight of the composition, at least one organometallate as component a2) in an amount of at least 70.0 wt.-%, based on the total weight of the composition, the present invention relates to a method for preparing a solvent-borne composition comprising at least one metal acid salt, the metal of which is selected from Ti and Zr, and at least one organosilane as component a3), sealing substrates obtainable by this method, the use of this solvent-borne composition as an adhesion promoting composition, the solvent-borne composition itself, and a kit comprising said solvent-borne composition.

The invention discloses a photocatalytic synthesis method of diethyl disulfide, and relates to the technical field of organic synthesis. The preparation method specifically comprises the following steps: mixing Co (NO3) 2.6 H2O and Ni (NO3) 2.6 H2O, and adding methanol to obtain a solution A; 2-methylimidazole and methyl alcohol are mixed, and a solution B is obtained; mixing the solution A and the solution B to obtain a zeolite imidazole framework material; selenium powder and the zeolite imidazole framework material are mixed and calcined, and a NiCoSe2 material is obtained; the preparation method comprises the following steps: mixing a NiCoSe2 material, ZnCl2, InCl3 and C2H5NS, adding an ethanol water solution, and carrying out microwave hydrothermal synthesis to obtain a NiCoSe2-coated ZnIn2S4 photocatalyst; the NiCoSe2-coated ZnIn2S4 photocatalyst and ethanethiol are subjected to a photocatalytic reaction under N2 atmosphere protection and visible light irradiation, and diethyl disulfide and hydrogen are generated. The method is mild in reaction condition and high in product stability.

The application discloses a preparation method of a key intermediate of dapagliflozin, and belongs to the technical field of preparation of medical intermediates. The preparation method of the key intermediate of dapagliflozin comprises the following steps: 1, 1-ethoxy-4-methylbenzene is prepared by using p-cresol, sodium hydroxide and diethyl sulfate; 2, (4-ethoxybenzyl) phenyl sulfide is prepared by using 1-ethoxy-4-methylbenzene, thiophenol, a palladium catalyst, an alkali and an oxidant; 3, 1-benzyl-4-ethoxybenzene is prepared by using (4-ethoxybenzyl) phenyl sulfide under a hydrogen atmosphere; 4, 4-ethoxy-2'-chlorobenzhydrol is prepared by carrying out chlorination reaction on 1-benzyl-4-ethoxybenzene; and 5, 5-bromo-2-chloro-4'-ethoxybenzhydrol is prepared by carrying out bromination reaction on 4-ethoxy-2'-chlorobenzhydrol. The yield and purity of 5-bromo-2-chloro-4'-ethoxybenzhydrol prepared by the method are higher, the process is safer, and the production cost is reduced.

The invention discloses a high-corrosion-resistance electrophoretic coating and a preparation method thereof, and belongs to the technical field of electrophoretic coatings. The preparation method of the coating comprises the following steps: S1, mixing epoxy resin, a thioether compound with an active group at the end position, a chain extender, triphenylphosphine, an organic solvent 2, an amino catalyst and a neutralizer, and carrying out heat preservation and chain extension to obtain thioether modified epoxy resin; s2, aminating, neutralizing and re-emulsifying the thioether modified epoxy resin in the step S1, an aminating agent, an organic solvent 1, a curing agent, a neutralizing agent and deionized water to obtain a high-corrosion-resistance emulsion; s3, mixing and grinding the thioether modified epoxy resin in the step S1 with pigment, a dispersing agent and deionized water to obtain high-corrosion-resistance color paste; s4, mixing the high-corrosion-resistance emulsion in S2 and the high-corrosion-resistance color paste in S3 according to the mass ratio of 4: 1 to 8: 1 to obtain the high-corrosion-resistance electrophoretic coating. And by adopting the thioether modified epoxy resin, the obtained coating has excellent corrosion resistance, mechanical property and flame retardant property at the same time.

The application provides a kind of sodium sulfide nine hydrate and activated olefin / acetylene preparation polyether and its method, belong to sulfur-containing polymer technical field.The structural formula of polyether in the application, R 1 And R 2 Independently be substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl;The number of carbon atoms of the alkyl is 1-10, the number of carbon atoms of alkoxy is 1-10, the number of carbon atoms of aryl is 1-30, the number of carbon atoms of heteroaryl is 3-30;Substituted alkyl and substituted alkoxy independently are one or more;N is an integer of 2-4000.The application is used as sulfur source sodium sulfide nine hydrate, under the condition of no metal catalyst, polyether is synthesized by polymerization reaction;Reaction condition is mild, reaction is efficient, economic and environmental protection, meet the current green production concept and can avoid the use of dangerous reagent.

The invention discloses a preparation method of trifluoromethyl sulfide, which comprises the step of reacting a trifluoromethyl reagent with sulfur in a polar aprotic solvent in the presence of fluoride to obtain the trifluoromethyl sulfide. The reaction conditions are mild, and trifluoromethyl sulfide can be prepared through one-step reaction.

The invention provides a preparation method of 2-acrylic acid 2-(2-naphthalenethio) ethyl ester, which comprises the following steps: (1) adding 2-thionaphthol, a first reactant and a catalyst into a first solvent, reacting at 110-140 DEG C for 4-10 hours, and washing with water to obtain 2-naphthyl sulfide ethanol; and (2) adding 2-naphthyl sulfide ethanol and a reaction aid into a second solvent, dropwise adding a second reactant, and reacting at 0-30 DEG C for 2-10 hours to obtain the 2-naphthyl sulfide ethanol, wherein the first reactant is 2-halogenated ethanol, ethylene oxide or ethylene carbonate and derivatives thereof; the second reactant is acryloyl chloride, alpha-methacryloyl chloride or a mixture of acrylic acid and phosphorus oxychloride. The preparation process is safe and simple, the cost is low, the reaction conditions are mild, the reaction polymerization can be effectively controlled, the post-treatment flow is simple, and industrialization is easy.

This invention discloses a magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd, its preparation method, and its applications. Using an amino alcohol as a starting material, an imidazole derivative containing a hydroxyl group on the N-substituent is obtained through a condensation and ring-closing reaction. This derivative is then subjected to substitution reactions with thionyl chloride and cyclohexanethiol sequentially to obtain an imidazole derivative containing a thioether on the N-substituent. This derivative is then reacted with 1,3-dibromopropane to obtain an N-bromopropyl-N'-cyclohexane thioether-substituted imidazole bromium salt. This salt is then reacted with Pd(OAc)₂ or PdCl₂ via a direct metallization reaction to obtain the N-bromopropyl-substituted thioether-chelated nitrogen heterocyclic carbene palladium complex NHC-Pd. The NHC-Pd complex is then reacted with amino-functionalized magnetic nanoparticles (MNPs-NH₂) to prepare the magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd. It not only possesses the activity of homogeneous nitrogen heterocyclic carbene palladium catalysts, but also has a simple synthesis method, high yield, and is easy to separate and reuse in catalytic C-C bonding reactions, showing good application prospects in the field of catalysis.

The present invention relates to specific thioether-based fragrance precursor compounds of formula (I) derived from mercaptosilanes and selected fragrances, and a process for their preparation. Furthermore, the present invention relates to washing or cleaning agents, cosmetic compositions, and a perfume composition containing such fragrance precursor compounds. In addition, the present invention relates to a process for the long-lasting fragrance application of surfaces using the fragrance precursor compounds and compositions according to the invention.

The present application provides thiamine compounds shown in formula (I) and application thereof. The thiamine compounds of the present application can be used for preparing polyolefin antioxidants. The thiamine compounds of the present application introduce sulfide bonds in aryl secondary amine, so that the antioxidant contains naphthylamine groups of primary antioxidants and sulfide groups of auxiliary antioxidants, which not only can terminate free radicals by providing hydrogen protons, but also can react with hydroperoxides, so as to achieve the dual effects of primary and auxiliary antioxidants, and thus the antioxidant effect is significantly enhanced.

The invention discloses a method for detecting phenyl sulfide in rectification residual liquid of 2, 4-dichlorophenol through high performance liquid chromatography, and belongs to the technical field of chemical detection and analysis. The method comprises the following steps: dissolving a to-be-detected 2, 4-dichlorophenol rectification residual liquid sample to prepare a to-be-detected sample, and preparing phenyl sulfide standard substance solutions with different concentrations; the method comprises the following steps: determining a to-be-detected sample and a phenyl sulfide standard substance solution by adopting a high performance liquid chromatograph, drawing a standard curve and a linear regression equation according to a detection result of the phenyl sulfide standard substance solution, and analyzing the phenyl sulfide in the sample by combining the linear regression equation and a chromatographic peak map of the to-be-detected sample, wherein the mobile phase comprises a phase A and a phase B, the phase A is an aqueous solution of phosphate buffer salt, the phase B is methanol, and an isocratic elution mode is adopted. According to the present invention, with the method, the accurate determination of the phenyl sulfide content in the 2, 4-dichlorophenol rectification residual liquid is achieved, the timely and accurate data guidance is provided for the 2, 4-D production process, and the target of production cost saving is ultimately achieved.

The invention discloses a method for removing sulfur-containing compounds in a crude oil-prepared cracked gas C3 fraction. The method comprises the following steps: contacting the crude oil-prepared cracked gas C3 fraction with a supported desulfurizer, wherein the load type desulfurizing agent comprises a carrier and a main active component loaded on the carrier; the main active component comprises alkali metal and / or alkaline earth metal; the carrier comprises elementary substances Ag, Ag2O, elementary substances Re and ReOx; reOx is a mixture of a plurality of Re oxides, x = n / 2, and n is 4, 6 or 7; the molar content of the elementary substance Re accounts for 30-45% of the total molar weight of Re in the carrier. The method provided by the invention can effectively remove low-carbon thioether and / or low-carbon mercaptan in the C3 fraction of the crude oil-prepared pyrolysis gas, has the advantages of low removal temperature, simple process, no additional reaction, no influence on downstream hydrogenation and separation processes, and energy consumption saving, and the desulfurizer can be repeatedly regenerated and used, and has long-period stable operation capability.

The present invention provides a method for producing a polyarylene sulfide (PAS) resin, with which it is possible to perform a filtration process and a cleaning process in a short time. More specifically, the method for producing a PAS resin is characterized by including: a step (1) for reacting a polyhaloaromatic compound with an alkali metal sulfide or with an alkali metal hydrosulfide and an alkali metal hydroxide in an organic polar solvent (a) so as to obtain a crude reaction mixture that contains at least a PAS resin, an alkali metal halide and the organic polar solvent (a); a step (2) for directly discharging the crude reaction mixture into a solution that contains an organic polar solvent (b) and a poor solvent for the PAS resin so as to bring the crude reaction mixture into contact with the solution, and subsequently removing the liquid phase component by solid-liquid separation so as to obtain a mixture (A) that contains at least the PAS resin and the alkali metal halide; and a step (3) for cleaning the mixture (A). This method for producing a PAS resin is also characterized in that: the poor solvent content in the solution used in the step (2) is 10-90 parts by mass; and the average particle diameter (D50) of the thus-obtained PAS resin is 0.5 mm or more.

The invention relates to the technical field of gas adsorption composite materials, in particular to zirconium-based MOF composite filter cloth and a preparation method and application thereof. The preparation method comprises the following steps: by taking a polyester non-woven fabric as a flexible carrier, sequentially carrying out alkali liquor activation and epoxy silane surface treatment to construct an active interface layer rich in epoxy groups; synthesizing a difunctional organic ligand simultaneously containing carboxylic acid and thioether functional groups by adopting a one-pot condensation reaction; in-situ self-assembly of zirconium metal clusters and bifunctional ligands is realized through a solvothermal-hot pressing synergistic process, oriented growth of MOF crystals on the surfaces of fibers and covalent interface connection formed through epoxy-carboxyl ring-opening reaction of a silane coupling agent are synchronously completed, and the MOF composite filter cloth is obtained. According to the zirconium-based MOF composite filter cloth disclosed by the invention, the efficient and high-selectivity capture of trace SOs is realized by utilizing the synergistic effect of thioether groups in ligands and unsaturated sites of metal clusters, and the regeneration is realized to a certain extent.

This disclosure relates to an arsenic fixation composition and its application method in a coal washing process. The arsenic fixation composition exhibits a good synergistic effect among dolomite powder, auxiliary absorbent, and catalyst, enabling the adsorption of arsenic from the coal washing process products after conversion. This reduces the arsenic content in the coal washing process products and improves arsenic removal efficiency. Using inexpensive, low-cost, and widely available dolomite powder as the main adsorbent reduces environmental pollution problems associated with traditional coal washing processes and improves their environmental performance. The use of a composition of petroleum sulfide and Fe-Mn composite oxides as the auxiliary absorbent allows for several advantages. First, the sulfur in petroleum sulfide converts trivalent arsenic in coal into pentavalent arsenic, facilitating absorption by the absorbent. Second, the Fe and Mn in the Fe-Mn composite oxides react with sulfur to form iron sulfide and manganese sulfide, preventing sulfur from entering the washing water and causing environmental pollution.

Provided is an electrode-forming composition which is suppressed in thickening and gelling by a simple method, has improved storage stability, and is capable of increasing the concentration of solid content, said electrode-forming composition containing a heterocyclic ring-containing compound, a positive electrode active material, a binder, and a solvent, the heterocyclic ring-containing compound is a heterocyclic ring having a five-membered ring or a six-membered ring, and the heterocyclic ring contains two or more bonds selected from the group consisting of an amide bond and a thioether bond.

The invention relates to the technical field of chemical material preparation, and particularly discloses a safe preparation method of a short fluorocarbon alkyl sulphobetaine surfactant, a product and application, and the safe preparation method comprises the following steps: (1) in a solvent system I, reacting epoxy chloropropane with secondary amine to obtain an intermediate 1; (2) in a solvent system II, reacting the intermediate 1 with sodium hydrosulfide or a hydrate thereof to obtain an intermediate 2; (3) reacting the intermediate 2 with short fluorocarbon alkyl iodide to obtain perfluoroalkyl thioether propyl tertiary amine; and (4) carrying out sulfonation treatment on perfluoroalkyl thioether propyl tertiary amine to obtain the short-fluorocarbon alkyl sulphobetaine surfactant. According to the invention, by designing a synthetic route without using a high-risk reagent, the safety and operability of the process are remarkably improved, and the sulphobetaine surfactant with excellent acid, alkali and salt chemical stability and excellent surface activity is successfully prepared; and a key material and a safe and reliable preparation process are provided for development of a new-generation efficient environment-friendly fire extinguishing agent.

The invention relates to a cold-resistant elastomer hot melt adhesive and a preparation method thereof, and belongs to the technical field of adhesives. The hot melt adhesive is prepared from the following components in parts by weight: 100 parts of PUR prepolymer, 6.2 to 8.5 parts of cold-resistant additive, 4.5 to 5.5 parts of active dispersant, 0.12 to 0.16 part of accelerant and 8 to 12 parts of tackifying resin, a thioether structure block with an ultra-low rotation potential barrier is introduced into a main chain of a cold-resistant auxiliary molecule, the deformation capacity of the main chain at low temperature is improved, a silicon-oxygen chain segment in the chain forms a lubricating effect between PUR macromolecular chains, the mutual movement capacity of matrix macromolecules at low temperature is improved, the thioether structure block and the silicon-oxygen chain segment synergistically act on a matrix, the toughness of the cold-resistant auxiliary molecule at low temperature is effectively improved, and the cold-resistant performance of the cold-resistant auxiliary molecule is improved. And the epoxy-terminated structure of the hot melt adhesive and a reactive PUR matrix are subjected to a ring-opening reaction, so that phase separation is inhibited, the problem of high-temperature performance reduction caused by introduction of a flexible chain is solved, and the hot melt adhesive adapts to high-strength bonding in a relatively wide temperature range.

The present application relates to a kind of anti-crack road marking paint suitable for alpine region and preparation method thereof, belong to the field of coating technology.The present application is by synthesizing allyl silicon modified pyridine quaternary ammonium salt monomer containing silicon atom, pyridine quaternary ammonium salt and branched fatty chain and spiro ring thioether quaternary ammonium salt monomer containing sulfide, carboxyl, quaternary ammonium salt and spiro ring structure, and two monomers and butyl acrylate, decyl acrylate are carried out emulsion polymerization reaction, and polyacrylate emulsion is prepared, then polyacrylate emulsion, rutile titanium dioxide, mica powder, talcum powder and alumina fiber are mixed, and road marking paint is prepared.The road marking paint of the present application has good adhesion, wear resistance, water resistance, alkali resistance, flexibility, glass bead firm adhesion and anti-freezing performance simultaneously.

The invention relates to a composition comprising thiol group containing poly(ether-thioether) species having the general structure         [H(S-R1)p-S-(CH2)r-O]m-R2-O-[R3-(S)s-R4-O]-[R5-O]n-R6     (Ia) or being an R1-linked dimer thereof, wherein, R1 is an aliphatic or aromatic divalent organic residue, R2 is an aliphatic or aromatic (m+1)-valent organic residue, with m = 2 or 3, R3 and R4 are divalent residues (CHRa)t with t = 2 to 4, wherein residues Ra are selected from H and hydrocarbyl groups comprising 1 to 12, y of the n residues R5 are branched divalent hydrocarbon residue comprising 4 to 20 carbon atoms, with y being ≥ 1; z of the n residues R5 are residues R3-(S)s-R4, z being ≥ 1; with n = y + z; and n independently of each other being a number in the range from 2 to 200; R6 is H in case R5 is a branched divalent hydrocarbon residue comprising 4 to 20 carbon atoms, or R6 is H or R2-[O-(CH2)r-S-R1-SH]m in case R5 being a residue R3-(S)s-R4; and p = 0 or 1, r = 2 or 3, and s = 1 to 8. The invention further relates to a method of producing said polymers, an intermediate of said polymers and its production, sealing systems and sealants containing the inventive polymer, a method of sealing and a sealed substrate, as well as the use of the sealant in the aerospace and / or aircraft industry.