33 results about "Phenylsilane" patented technology

The invention discloses a cable insulating material which comprises the following components in parts by weight: 40-60 parts of low-density polyethylene, 20-30 parts of an ethylene-vinyl acetate copolymer EVA, 2-5 parts of a composite anti-aging agent, 5-10 parts of a core-shell structure nano composite modifier, 1-2 parts of a lubricant, 3-8 parts of a compatilizer, 20-30 parts of a composite flame retardant, 5-10 parts of a nano reinforcing agent and 2-4 parts of phenylsilane. The core-shell structure modifier strengthens interface bonding, and cooperates with the modified nano reinforcing agent to disperse stress, so that the mechanics and high and low temperature resistance are improved; the composite anti-aging agent inhibits multi-path aging and improves the aging resistance. The material has the advantages of excellent mechanical properties, high and low temperature resistance and outstanding aging resistance, and meets the insulation quality and efficiency requirements of cables in complex use environments.

The invention discloses high-hydrophobicity bamboo powder, a modification method and a composite material, and belongs to the technical field of bamboo processing and composite materials. According to the method, a phenyl silane coupling agent is hydrolyzed under the conditions of the specific pH value and the alcohol-water volume ratio, bamboo powder is subjected to coating treatment at the room temperature, a gel layer is formed on the surface of the bamboo powder, the bamboo powder is changed from hydrophilicity to hydrophobicity, the water contact angle is larger than or equal to 90 degrees, and meanwhile the initial thermal decomposition temperature is remarkably increased. The method is simple in process and environmentally friendly, and the obtained modified bamboo powder is suitable for the fields of plastics, rubber and other composite materials.

A method of making an oven cavity of a cooking appliance, and a cooking appliance made therewith, are provided. The method includes forming a composite sheet via sheet molding compound. The composite sheet includes glass fiber impregnated with silicone polymer. An intermediate assembly is formed by disposing a layer comprising an insulative material onto a first layer of the composite sheet. The intermediate assembly is inserted into a mold. A compression load is applied to the intermediate assembly in the mold to obtain a molded piece. One or more of the molded piece forms a composite body that defines the oven cavity of the cooking appliance. The silicone polymer may include one or more of poly dimethylsiloxane, poly methylphenyl silanol, poly diphenyl silanol, and poly vinyl functional backbone silicones having methyl hydrosilane crosslinkers. The insulative material may include ceramic foam, hollow glass microspeheres, or recycled glass powder.

The present invention relates to the fields of biopharmaceuticals and biochemical engineering, and particularly relates to a method for preparing chiral β-trifluoromethyl alcohol compounds using non-heme iron enzyme BsQueD or its mutants. Using non-heme iron enzyme BsQueD or its mutants as catalysts, trifluoromethyl ketone as a substrate, and phenylsilane as a hydrogen source, chiral β-trifluoromethyl alcohol is obtained after the reaction. The amino acid sequence of the non-heme iron enzyme BsQueD is shown in SEQ ID NO.1. It has a high conversion rate (70%) for the substrate trifluoromethyl ketone, high optical activity of the product β-trifluoromethyl alcohol (e.e. value greater than 90%), and high yield, greatly reducing the production cost.

The invention discloses p-toluenesulfonic acid 8-tert-butyl diphenyl silyloxy-7-methyl octyl ester as well as a synthesis method and application thereof, and relates to the technical field of biopesticides. The preparation method comprises the following steps: taking 8-bromocaprylic acid as an initial raw material, and firstly reacting with t-BuOK and 18-crown ether-6; then reacting with pivaloyl chloride to generate acid anhydride, and then carrying out acylation reaction with 4-benzyl oxazolidine-2-ketone; then carrying out diastereoselective methylation; then, NaBH4 reduction is carried out; carrying out hydroxyl protection; then carrying out hydroboration oxidation reaction; and then carrying out TsCl sulfonylation, so as to synthesize the p-toluenesulfonic acid-8-tert-butyl diphenyl silyloxy 7-methyl octyl ester. The optical purity of the (S)-p-toluenesulfonic acid 8-tert-butyl diphenyl silyloxy-7-methyl octyl ester synthesized in the invention reaches 98%, and the optical purity of the (R)-p-toluenesulfonic acid 8-tert-butyl diphenyl silyloxy-7-methyl octyl ester synthesized in the invention also reaches 98%.

The invention discloses a high-efficiency transfer hydrogenation method of non-activated olefin, which comprises the following steps: adding a non-activated alkenyl amide compound, nickel acetylacetonate dihydrate, phenylsilane, water and cesium pivalate into an organic solvent 1, 4-dioxane, reacting at room temperature under a nitrogen condition for 12 hours, and after the reaction is completed, filtering to obtain a filtrate, namely the high-efficiency transfer hydrogenation method of the non-activated olefin. And performing post-treatment (extraction and column chromatography separation) to obtain the corresponding alkyl chloride compound. According to the method, phenylsilane and water are directly used as hydrogen sources, direct use of hydrogen can be avoided, operation is easy and convenient, and efficient construction of C (sp3)-C (sp3) bonds can be achieved through transfer hydrogenation of non-activated olefin. The conversion reaction conditions are extremely mild, and the reaction activity is high; the method has the advantages of excellent atom economy and step economy, wide substrate application range, good functional group compatibility and the like. It is worthy that the synthesis method is also suitable for later-stage modification of medicine molecules, and the druggability of the molecules is expected to be further improved.

The application discloses a bisoxazoline pyridine functionalized porous organic polymer and preparation and application thereof; firstly, a styryl functionalized PyBox monomer (VPyBox) is designed and synthesized, and VPyBox, styrene and divinylbenzene are subjected to free radical polymerization under initiation of azobisisobutyronitrile in a certain proportion to obtain a series of porous organic polymers (POP-PyBox); the POP-PyBox can be used as a solid N , N , N tridentate ligand for Co-catalyzed hydrosilylation of arylalkynes with diphenylsilane; the heterogeneous catalyst system developed by the application has a catalytic activity comparable to that of a homogeneous catalyst reported in the literature, and the catalyst is easy to separate and recover; the recovered catalyst can be recycled for more than 6 times, which can not only greatly reduce the preparation cost of vinylsilane, but also simplify the post-treatment process and reduce the three wastes, and has a good practical application prospect.

The present application relates to the technical field of biopharmacy and bio-chemical industry, and particularly relates to a method for preparing a chiral beta-trifluoromethyl alcohol compound by using a non-heme iron enzyme BsQueD or a mutant thereof, wherein the non-heme iron enzyme BsQueD or the mutant thereof is used as a catalyst, a trifluoromethyl ketone is used as a substrate, and phenylsilane is used as a hydrogen source; and a chiral beta-trifluoromethyl alcohol is prepared after reaction. The amino acid sequence of the non-heme iron enzyme BsQueD is shown in SEQ ID NO. 1, the conversion rate of the non-heme iron enzyme BsQueD to the substrate trifluoromethyl ketone is high (70%), the optical activity of the product beta-trifluoromethyl alcohol is high (an e.e. value is greater than 90%), and the yield is high, so that the production cost is greatly reduced.

Present invention relates to a method for producing green fluorescent paint for use as a lighting for energy-efficient highway lane and park markings, characterized as comprising following production steps; adding 9,10-dibromoanthracene, CuI, Pd catalyst, diisopropylamine and toluene in a reaction flask under nitrogen atmosphere and stirring them on a magnetic stirrer, adding tetraphenylsilanacetylenyl to the mixture and performing reflux distillation by increasing the reaction temperature, after 24 hours bringing the temperature to room temperature, obtaining pure product from the mixture brought to room temperature using column chromatography, taking 0-1% by mass of the product and mixing it in resin and an aromatic solvent for 6-24 hours.

This invention provides a composite flame-retardant material formed by combining organosilicon resin and hybrid flame-retardant particles. The organosilicon resin is formed by the hydrolysis and condensation of a mixture of organosilicon monomers. The organosilicon monomer mixture includes monomethylsilane monomer, dimethylsilane monomer, monophenylsilane monomer, and diphenylsilane monomer. The hybrid flame-retardant particles include nanoparticles modified with a mercaptosilane coupling agent. The surface of the mercaptosilane coupling agent-modified nanoparticles is grafted with phosphonic acid groups. Compared with the prior art, this invention introduces phosphorus by grafting phosphonic acid groups onto the surface of the mercaptosilane coupling agent-modified nanoparticles, thereby improving the flame-retardant performance by combining phosphorus with silicon, while reducing the silicon content and avoiding its impact on mechanical properties. This allows the composite flame-retardant material to be used for surface flame retardancy of polyurethane materials, improving their flame-retardant efficiency and smoke suppression effect without affecting the inherent properties of the polyurethane material.

The invention discloses a tackifier, a preparation method thereof and application of the tackifier to silicone rubber, and relates to the field of silicone rubber. Three phenyl silane coupling agents or more than three epoxy silane with different functionality degrees are used as raw materials, methanol or ethanol is used as a solvent, and the condensation reaction degree is controlled at the same time; the method comprises the following steps: by taking phenyl siloxane as a raw material and acidic cationic resin as a catalyst, carrying out partial cohydrolytic condensation at 20-80 DEG C, filtering to remove the cationic resin, and decompressing to remove a solvent and low volatile components, thereby obtaining the colorless and transparent phenyl siloxane oligomer tackifier with the polymerization degree of 3-6. The tackifier is suitable for a hydrosilylation silicone rubber system with adhesion requirements. The method is simple in process control and mild in reaction condition, and has better controllability and reproducibility. The method is expected to be widely applied to the fields of electronic and electric appliance industry, LED chip packaging, aerospace and the like.

The invention provides a rock self-water-absorption inhibitor as well as a preparation method and application thereof, and belongs to the technical field of well wall stability of drilling fluid. The preparation method of the rock water self-absorption inhibitor comprises the following steps: (1) dissolving a cationic surfactant and urea in deionized water to obtain a water phase; mixing cyclohexane with a cosurfactant, and uniformly stirring to obtain an oil phase; adding the obtained water phase into the oil phase, stirring and emulsifying to obtain an emulsion; (2) dropwise adding tetraethyl silicate into the emulsion obtained in the step (1) under a stirring condition; after dropwise adding, adding organosilicon quaternary ammonium salt and hydroxymethyldiphenylsilane, and carrying out a reaction; and after the reaction is finished, centrifuging, washing and drying to obtain the product. The inhibitor disclosed by the invention still can be stably attached in a high-temperature deep stratum for a long time and continuously prevent water-based drilling fluid filtrate from invading, and the problems that an existing rock self-water-absorption inhibitor is insufficient in temperature resistance in the aspect of deep well wall stability, easy to fall off during adsorption and rapid in inhibition effect attenuation are solved.

This invention provides a mechanically durable, antibacterial, and environmentally friendly marine antifouling coating, its preparation method, and its application. Belonging to the field of marine antifouling materials technology, it comprises the following components: a fluorinated quaternary ammonium salt polysiloxane prepolymer; nano-titanium dioxide; a curing agent; and pigments. The fluorinated quaternary ammonium salt polysiloxane prepolymer is prepared by dehydration condensation reaction of quaternary ammonium salt silane monomer A, phenyl silane monomer B, and fluorinated silane monomer C in an organic solvent under the action of an alkaline catalyst. The quaternary ammonium salt compounds used in this invention possess excellent environmental compatibility and outstanding rapid antibacterial and algaecidal effects, endowing the material surface with continuous microbial inhibition and killing properties. By disrupting the integrity of bacterial cell membranes and interfering with the activity of biological enzymes, it blocks the colonization and reproduction chain of marine attached organisms from the source, significantly improving the coating's resistance to typical fouling organisms such as barnacles and diatoms. Simultaneously, it can significantly improve the coating's modulus and hardness, making it more resistant to scratches, abrasions, and impacts.

This application provides a silicone-modified waterborne polyurethane and its preparation method. The preparation method includes the following steps: Hydroxyl-terminated polyether-modified silicone oil and isoflurane diisocyanate are placed in a container, and the temperature is raised to 80-90℃ and maintained for 1.5-2.5 hours; then polytetrahydrofuran and diphenylsilanediol are added sequentially, and the temperature is raised to 85-95℃ and reacted for 2.5-3.5 hours until the -NCO content is close to or reaches the theoretical value, at which point the reaction is stopped to obtain a prepolymer; then the temperature of the prepolymer is lowered to below 40℃, acetone and triethylamine are added, and the reaction is carried out for 3-5 minutes; then the product is transferred to a reaction vessel containing an appropriate amount of deionized water and defoamer and stirred evenly to form an emulsion; finally, a mixture of deionized water, diethylenetriamine, and ethylenediamine is added for emulsification to obtain the silicone-modified waterborne polyurethane.

This invention discloses a high-performance anti-corrosion and wear-resistant material composition for polysiloxane powder coatings, relating to the field of powder coating technology. The composition, by weight, comprises polysiloxane-modified epoxy resin, carboxylated polyester resin, triglycidyl isocyanate, modified wear-resistant inorganic powder, flake-like barrier filler, flexible toughening component, low-friction additive, and auxiliary pigments and fillers. The modified wear-resistant inorganic powder is obtained by treating alumina, silicon carbide, and / or wollastonite with zinc phytate, cerium phytate, and / or zinc- and cerium-containing phytate products, followed by composite treatment with epoxy silane and phenyl silane. This composition can be cured by melt extrusion, crushing and sieving, and electrostatic spraying to form a coating for surface protection of metal components, improving the anti-corrosion and wear-resistant stability of the coating under friction, scratches, cleaning, and humid environments.

The invention discloses a long carbon fiber nylon 66 composite material and a preparation method thereof. The long carbon fiber nylon 66 composite material comprises 40-55 wt% of carbon fiber, 40-55 wt% of nylon 66, 0.5-1 wt% of a main antioxidant, 0.5-1 wt% of an auxiliary antioxidant, 1-2 wt% of vinyl phenyl silane and 3-4 wt% of a maleic anhydride grafted toughening agent. By adding the vinyl phenyl silane and the maleic anhydride grafted toughening agent, the interface compounding effect of the nylon resin and the carbon fibers is greatly enhanced, and the mechanical property of the material is enhanced.

The application provides a rock self-water-absorption inhibitor and a preparation method and application thereof, and belongs to the technical field of well wall stabilization of drilling fluids. The preparation method of the rock self-water-absorption inhibitor comprises the following steps: (1) dissolving a cationic surfactant and urea in deionized water to obtain an aqueous phase; mixing cyclohexane and a co-surfactant and stirring uniformly to obtain an oil phase; adding the obtained aqueous phase into the oil phase and stirring and emulsifying to obtain an emulsion; (2) under stirring, adding tetraethyl silicate dropwise into the emulsion obtained in step (1); after the dropwise addition is completed, adding a silicone quaternary ammonium salt and a hydroxymethyl diphenyl silane and performing reaction; after the reaction is completed, centrifugation, washing and drying are performed to obtain the rock self-water-absorption inhibitor. The inhibitor can still be stably attached and continuously prevent water-based drilling fluid filtrate from invading in a high-temperature deep formation, and overcomes the problems of insufficient temperature resistance, easy falling off after adsorption and fast attenuation of inhibition effect of the existing rock self-water-absorption inhibitor in deep well wall stabilization.

The invention belongs to the technical field of flame-retardant auxiliaries, and particularly relates to an organosilane modified graphite-based flame retardant, flame-retardant polypropylene as well as a preparation method and application of the flame-retardant polypropylene. A phenyl silane coupling agent and a siloxane-terminated isocyanurate ring compound are introduced on the basis of expandable graphite, a Si-O-Si structure is formed through hydrolytic condensation of siloxane, phenyl, an isocyanurate ring and a urea bond are introduced into the expandable graphite at the same time, and the organosilane modified graphite-based flame retardant is obtained. Therefore, more optimized interface modification on the surface of the expanded graphite is realized, and the flame-retardant effect is enhanced to V-0 level. According to the present invention, the modified graphite-based flame retardant is added to the polypropylene matrix, such that the expandable graphite can uniformly and rapidly expand during combustion so as to form the compact, continuous and firm expanded carbon layer, such that heat and oxygen can be effectively isolated, and combustion can be delayed, such that the flame retardant consumption can be reduced, the flame resistance of the polypropylene can be improved, and the mechanical property of the polypropylene can be maintained.

The application relates to the technical field of microporous membranes, and discloses a bio-based microporous membrane and a preparation method thereof. The bio-based microporous membrane comprises raw materials: 4,4-diisocyanate dicyclohexyl methane, polycaprolactone diol which is a bio-based raw material, a chain extender which is composed of hydrogen-containing eugenol functionalized siloxane and 1,4-butanediol, and hydrogen-containing eugenol functionalized siloxane which is prepared by the reaction of bio-based raw material eugenol, 1,3-divinyltetramethyldisiloxane and phenylsilane; and alkenyl functionalized antibacterial nanoparticles which are covalently bonded with the hydrogen-containing eugenol functionalized siloxane through a platinum-catalyzed hydrosilylation reaction, and are prepared into the bio-based microporous membrane through a wet film forming method and by taking bio-based polyurethane as the raw material. The prepared membrane product has a bacteriostatic rate of more than 99%, and the bio-based carbon content thereof is more than 60%.

The application discloses a cable insulation material, which comprises the following components in parts by weight: low-density polyethylene 40-60 parts, ethylene-vinyl acetate copolymer (EVA) 20-30 parts, composite anti-aging agent 2-5 parts, core-shell structure nano-composite modifier 5-10 parts, lubricant 1-2 parts, compatibilizer 3-8 parts, composite flame retardant 20-30 parts, nano-reinforcing agent 5-10 parts, and phenyl silane 2-4 parts. The core-shell structure modifier strengthens the interface bonding and cooperatively modifies the nano-reinforcing agent to disperse stress, so that the mechanical property and the high and low temperature resistance are improved. The composite anti-aging agent inhibits multi-path aging and improves the aging resistance. The material has excellent mechanical property, outstanding high and low temperature resistance and aging resistance, and meets the insulation quality and efficiency requirements of the cable in a complex use environment.

The invention relates to a preparation method of a silyl compound, and belongs to the technical field of organic chemistry. The preparation method of the silyl compound comprises the following steps: under a protective atmosphere, mixing perfluoroalkyl sulfonic acid and phenylsilane in an organic solvent, and carrying out a reflux reaction to obtain a reaction solution; the preparation method comprises the following steps: stirring and mixing organic amine and lithium alkylide in an organic solvent to obtain turbid liquid; mixing and refluxing the obtained turbid liquid and the obtained reaction liquid, carrying out solid-liquid separation to take a liquid phase, and concentrating and rectifying to obtain the silane-based compound. According to the invention, phenylsilane and diphenyl silane are used for replacing traditional monochlorosilane and dichlorosilane, and the raw material is liquid, so that the whole process is safer and more efficient; and requirements on process equipment are low, the process is greatly simplified, and large-scale production is facilitated.

The invention discloses a preparation method of composite silicon resin micro powder, and relates to the technical field of organic and inorganic hybrid materials, and the preparation method comprises the following steps: S1, preparing a phenyl silane premixed solution: adding phenyl silane into a mixed solvent composed of ethanol and pure water, uniformly stirring, adjusting the pH value of the system to 3-5, and stirring at a constant temperature of 30-70 DEG C for 30-60 minutes; s2, preparing a methyl silicate reaction solution: adding water into the methyl silicate solution to dilute the methyl silicate solution until the mass fraction is 2-20%, adding a surfactant, uniformly stirring, controlling the temperature at 30-70 DEG C, and adding acid to adjust the pH value of the system to 8-12. According to the preparation method of the composite silicon resin micro powder, a methyl silicate precursor with a low refractive index and a phenyl silane precursor with a high refractive index are subjected to copolycondensation reaction, and the composite silicon resin micro powder with the refractive index adjustable in the range of 1.42-1.58 is successfully prepared. By adjusting the proportion of the two monomers, the refractive index of the product can be accurately controlled, so that the specific requirements of different application scenes on light transmittance and haze are met.

The invention belongs to the technical field of polyethylene catalysts, and particularly provides a chromium polyethylene catalyst for a ring pipe slurry polymerization process and a preparation method of the chromium polyethylene catalyst. The invention relates to a chromium-based polyethylene catalyst for a ring pipe slurry polymerization process. The chromium-based polyethylene catalyst comprises a modified carrier and a chromium active component, the modified carrier is prepared by compounding modified silica gel and modified POSS (Polyhedral Oligomeric Silsesquioxane); the modified silica gel is prepared from phenyl silane modified silica gel; the modified POSS is prepared by carrying out a reaction on phenyl triethoxy silane, lithium hydroxide monohydrate and 4-nitrophthalonitrile; the chromium active component is chromium acetate. The prepared chromium polyethylene catalyst has good polymerization activity, and the prepared polyethylene product is relatively more uniform and has good processability.

The present application relates to the technical field of power cable, especially relates to a rust-proof cable accessory insulation lubricating grease and a preparation method thereof, which comprises 100 parts of base oil, 8-25 parts of modified fumed silica, 0.01-3 parts of extreme pressure anti-wear agent and 0.1-1 part of antioxidant by weight fraction. The present application realizes double function integration by simultaneously constructing benzotriazole corrosion inhibition group and diphenylsilane insulation barrier on the surface of fumed silica. The triazole ring of benzotriazole is oriented exposed on the surface of the filler, and a dense passivation film is formed by the coordination of lone pair electrons and metal atoms, thereby blocking the electrochemical corrosion path from the molecular level; the rigid aromatic ring of diphenylsilane inhibits electron migration through steric hindrance effect, thereby forming a high-energy barrier insulation layer. The two are stably combined through siloxane covalent bond, thereby solving the performance conflict caused by the phase separation of rust inhibitor and insulation agent in the traditional physical mixing process, and long-acting synergistic protection ability is given to the lubricating grease.

The invention discloses a preparation process of a graphene-enhanced porous composite filter material of a fume hood for waste gas purification, belongs to the technical field of waste gas purification, and aims to solve the technical problem that the wet working condition adsorption capacity of the porous composite filter material of the fume hood in the prior art needs to be further improved. The preparation method specifically comprises the following steps: putting melamine sponge, phenyl trichlorosilane and normal hexane into a reaction kettle, reacting at room temperature for 14-16 hours, and performing post-treatment to obtain the phenyl modified melamine sponge. Fly ash is used as a base material, GO is loaded and reduced into rGO in situ, graphene is uniformly anchored, an aromatic structure is exposed, reaction nodes are introduced through phenyl silanization, finally, under the catalysis of FeCl, the graphene, octaphenyl POSS and phenyl melamine sponge are subjected to synergistic super-crosslinking, a three-dimensional hydrophobic porous network is formed, and the graphene / polyhedral oligomeric silsesquioxane / polyhedral oligomeric silsesquioxane / polyhedral oligomeric silsesquioxane / polyhedral oligomeric silsesquioxane composite material is obtained. The composite filter material with high specific surface area, good air permeability and wet working condition adsorption capacity is obtained.

This invention discloses a method for preparing asymmetric tertiary silanes by hydrosilylation of alkynes and olefins. The method comprises: a cobalt A complex catalyzing a primary hydrosilylation reaction between an alkyne and a hydrosilane to generate a secondary silane intermediate; then, a cobalt B complex and an olefin are added to catalyze a secondary hydrosilylation reaction between the secondary silane intermediate and the olefin to generate the asymmetric tertiary silane; wherein the cobalt A complex is an N-pyridineimide bidentate cobalt metal complex; and the cobalt B complex is a bis((2-diphenylphosphine)phenyl)ether type cobalt metal complex. This method for preparing asymmetric tertiary silanes by hydrosilylation of alkynes and olefins utilizes two cobalt catalysts, using alkynes, olefins, and phenylsilanes as substrates, and employs two sets of continuous hydrosilylation reactions in a one-pot, two-step process to efficiently and selectively synthesize asymmetric tertiary silanes through a series of reactions.

The application discloses a high-temperature-resistant non-stick ceramic coating and a preparation method thereof. The ceramic coating comprises an A component and a B component in a mass ratio of 1-3:1. The A component comprises the following raw materials in parts by mass: 100 parts of an inorganic adhesive, 1-30 parts of pigments, 10-20 parts of fillers, and 1-5 parts of a dispersing agent. The B component comprises the following components in parts by mass: 0.3-2 parts of a catalyst, 40-100 parts of silane, 1-10 parts of a non-stick additive, 2-10 parts of an auxiliary agent, and 1-10 parts of a solvent. The silane comprises polyether silane and phenyl silane, the polyether silane accounts for 20-30% of the total mass of the silane, and the phenyl silane accounts for 10-20% of the total mass of the silane. The application can effectively solve the problems of existing non-stick ceramic coatings, such as easy cracking and peeling due to excessive rigidity and insufficient toughness, and attenuation of non-stick performance.

The application relates to the technical field of organic synthesis, in particular to a preparation process of a phenyl silane polymer; the application successfully introduces a phenyl group on a silane polymer skeleton through a two-step method; after the two-step reaction, purification means such as reduced pressure distillation are adopted, so that byproducts, unreacted raw materials and solvents generated in the reaction can be effectively removed, and high yield and high purity of the final product are ensured; furthermore, the introduction of the phenyl group significantly improves the heat resistance of the final polymer, so that the thermal decomposition temperature of the final polymer is greatly improved; meanwhile, the rigid structure of the phenyl group enhances the mechanical strength of the polymer, and the hydrophobicity and the compatibility with various materials are also improved, so that the polymer can be widely used for preparing high-temperature-resistant protective coatings, high-refractive optical materials, high-performance silicone rubber and packaging protective materials of electronic components, and the demand of high-end manufacturing industry for special organic silicon materials is met.

This invention relates to an NNN-pyridine-quinoline type cobalt complex, its preparation method, and a catalytic hydrosilylation reaction of alkynes. The hydrosilylation reaction of alkynes catalyzed by the NNN-pyridine-quinoline type cobalt complex includes the following steps: dissolving alkynes, diphenylsilane, and additives in an organic solvent; using the NNN-pyridine-quinoline type cobalt complex as a catalyst; and conducting the hydrosilylation reaction of alkynes to obtain a martensitic olefin addition product. The NNN-pyridine-quinoline type cobalt complex and its preparation method described in this invention, along with the catalytic hydrosilylation reaction of alkynes, offer a simple and low-cost synthesis method for the NNN-pyridine-quinoline type cobalt complex, exhibiting high catalytic activity. It overcomes the drawback of traditional hydrosilylation reactions requiring precious metals such as platinum, providing a new approach for industrial hydrosilylation reactions.

The invention discloses (S)-tert-butyl ((2-methyl-7-(trimethylsilyl) hept-6-alkyn-1-yl) oxy) diphenyl silane as well as a synthesis method and application thereof, and relates to the technical field of biopesticides. The preparation method comprises the following steps: by taking (R)-3-hydroxy-2-methyl-propionate as an initial raw material, firstly reacting with imidazole and tributyl diphenyl chlorosilane to protect hydroxyl; carrying out a reduction reaction on the obtained product and DIBAL-H, and carrying out a sulfonylation reaction on the obtained product and TsCl; then, the (S)-tert-butyl ((2-methyl-7-(trimethylsilyl) heptyl-6-alkynyl-1-yl) oxy) diphenyl silane is subjected to a coupling reaction with a Grignard reagent containing alkynyl, and (S)-tert-butyl ((2-methyl-7-(trimethylsilyl) heptyl-6-alkynyl-1-yl) oxy) diphenyl silane is synthesized. The optical purity of the (S)-tert-butyl ((2-methyl-7-(trimethylsilyl) hept-6-alkyn-1-yl) oxy) diphenyl silane synthesized by the preparation method disclosed by the invention reaches 98%.