110 results about "Phenylsilane" patented technology

The invention discloses a preparation method of high-purity diiodosilane, which comprises the following steps: firstly, preparing a p-phenylsilane solution from phenyl trichlorosilane and sodium hydride as raw materials, rectifying and purifying the p-phenylsilane solution, directly reacting the p-phenylsilane solution with iodine to generate diiodosilane, and reacting phenylsilane with iodine to directly generate diiodosilane; in the process of preparing diiodosilane from phenylsilane, conditions are mild, the reaction process is controllable, the reaction time is shortened by controlling the temperature in the synthesis process and increasing the pressure of a reaction system, hydrogen iodide overflow is reduced, sodium hydride is adopted as a reducing agent in the reaction process, and the yield of diiodosilane is increased. The solid waste can be recycled, the cost can be effectively reduced, and industrialization of diiodosilane is facilitated.

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.

Diaryl silane bridged metallocene catalysts, methods of making the same, and propylene polymers (copolymers) made therefrom. The obtained silane-bridged metallocene catalyst has very high activity in the polymerization of olefins, especially ethylene and propylene. The diarylsilane bridged metallocene may be synthesized by substituting a dichlorocyclopentadienyl fragment with lithium indenyl. Direct lithiation / substitution with an aryl or alkyl lithium reagent provides a dilithiated ligand that undergoes metallization with a Group IV metal precursor.

The invention belongs to the technical field of electrochemical synthesis, and particularly relates to a method for electrochemical synthesis of dichlorodiphenyl silane by using benzene and silicon tetrachloride as raw materials, which comprises the following steps: using a diaphragm-free electrolytic bath, adding electrolyte, benzene and silicon tetrachloride into the electrolytic bath to form a reaction system, and generating dichlorodiphenyl silane under the protection of inert gas under the electrolysis condition, the electrolyte is composed of acetonitrile as a solvent, a supporting electrolyte and a buffer solution. The reaction does not need a transition metal catalyst, a high-temperature and high-pressure condition, an oxidizing agent or a reducing agent, electrons are directly used as the oxidizing agent, the method is green and environment-friendly, a reaction device is simple and convenient to operate, and the yield can be stabilized at about 70%.

The invention discloses a high-thermal-conductivity graphene fiber composite material based on conjugate interface adaptation and a preparation method thereof, and relates to the technical field of fiber composite materials. According to the method, a conjugated interface conformation adaptive design of an interface phase is realized by utilizing a functionalized phenylsilane coupling agent through active sites of topological wrinkles on the surface of a graphene fiber, and a molecular conjugated interface layer with an efficient heat conduction path and a strong mechanical interlocking effect is formed. According to the graphene fiber / epoxy resin composite material treated by the method, the interfacial shear strength can reach 90 MPa, the in-plane heat conductivity coefficient reaches up to 550 W / mK, and the performance retention rate exceeds 98% after 100 times of thermal shock cycles. By regulating and controlling the adaptability of the fiber surface wrinkle structure and the interface molecule conformation, the problem that a traditional carbon fiber modification method is insufficient in applicability on graphene fibers is solved, the thermal and mechanical property synergistic effect of the graphene fiber composite material is remarkably improved, and the graphene fiber composite material is suitable for a stable advanced thermal management system in an extreme thermal environment.

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.

The invention belongs to the technical field of silicone rubber materials, and particularly relates to a silicone rubber damping agent and a preparation method thereof. The silicone rubber damping agent is shown as a formula I, cyclodextrin is alpha-cyclodextrin, beta-cyclodextrin or gamma-cyclodextrin, the total number m of hydroxyl groups is 18, 21 or 24, and the modification number n meets the condition that n is larger than 0 and smaller than m. The preparation method comprises the following steps: mixing cyclodextrin, a solvent and an acid-binding agent, introducing inert gas to remove water, adding a phenylsilane compound, heating to react, and purifying. The silicone rubber damping agent can significantly improve the damping performance of silicone rubber in the range of-50 DEG C to 150 DEG C and maintain the mechanical property and low temperature resistance of the silicone rubber, and is suitable for the field I of wide-temperature-range vibration reduction.

The invention relates to the technical field of adhesives, and discloses a preparation method of an epoxy resin adhesive, which comprises the following steps: reacting p-aminophenol with diphenyl dichlorosilane under the catalysis of triethanolamine to obtain di (p-aminophenoxy) diphenyl silane; the preparation method comprises the following steps: carrying out Mannich reaction on amino in di (p-aminophenoxy) diphenyl silane, amino in polyether amine, formaldehyde and phenol to obtain the silane-containing polyether amine type benzoxazine intermediate. And finally, uniformly mixing the silane-containing polyether amine type benzoxazine intermediate and epoxy resin, and curing to obtain the epoxy resin adhesive. The prepared silane-containing polyether amine benzoxazine intermediate contains a silane structure and a benzoxazine structure, both the silane structure and the benzoxazine structure have excellent heat resistance, and the epoxy resin adhesive prepared by adding the silane-containing polyether amine benzoxazine intermediate into epoxy resin has excellent heat resistance.

The invention relates to the technical field of power cables, in particular to antirust cable accessory insulation lubricating grease and a preparation method thereof.The antirust cable accessory insulation lubricating grease is prepared from, by weight, 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. According to the invention, a benzotriazole corrosion inhibition group and a diphenyl silane insulation barrier are synchronously constructed on the surface of fumed silica, so that integration of dual functions is realized. A triazole ring of benzotriazole is directionally exposed on the surface of the filler, a compact passivation film is formed through coordination of lone pair electrons and metal atoms, and an electrochemical corrosion path is blocked from the molecular level; and a rigid aromatic ring of diphenyl silane inhibits electron migration through a steric hindrance effect to form a high-energy barrier insulating layer. The two are stably combined through siloxane covalent bonds, so that the performance conflict caused by phase separation of an antirust agent and an insulating agent in a traditional physical mixing process is solved, and the lubricating grease is endowed with long-acting synergistic protection capability.

The invention provides a novel filtering membrane used in a VB12 production process and a preparation method thereof, and belongs to the technical field of vitamin B12 production.The preparation method comprises the following steps that firstly, graphene oxide is obtained after graphene powder is oxidized, a diphenyl substitute is grafted to the surface of the graphene oxide, and an intermediate is obtained; 2, carrying out mixed reaction on the modified chitosan and the intermediate to obtain modified graphene; and 3, mixing the modified graphene with the cellulose ester membrane casting solution, and preparing the novel filtering membrane used in the VB12 production process through a phase inversion method. Through collaborative design of a graphene-chitosan hybrid structure and a polyphenylsilane cross-linked network, high selectivity, strong pollution resistance and chemical corrosion resistance of the filtering membrane are realized, and the filtering membrane is worthy of popularization.

The invention discloses a muck-based baking-free brick and a preparation method thereof, and relates to the technical field of baking-free bricks. The muck-based baking-free brick is prepared from the following raw materials in parts by weight: 80 to 100 parts of engineering muck, 10 to 12 parts of cement, 30 to 50 parts of deionized water, 10 to 12 parts of alkali activator, 1 to 2 parts of defoaming agent, 1 to 3 parts of basalt fiber and 5 to 10 parts of curing agent. The preparation method comprises the following steps: reacting magnesium chloropropene with phenyl trichlorosilane to obtain trialkenyl (phenyl) silane; the preparation method comprises the following steps: firstly, preparing hyperbranched organic silicon resin, then adding 1, 5-pentanediol in batches to prepare hyperbranched organic silicon resin, then grafting the hyperbranched organic silicon resin onto epoxy resin to prepare hyperbranched organic silicon modified epoxy resin, and then grafting gamma-aminopropyltriethoxysilane to obtain the curing agent. The muck-based baking-free brick prepared by the invention has the characteristics of good compressive strength, low water absorption rate and the like.

The invention discloses a method for separating and determining a dotenorad key intermediate and related compounds thereof by HPLC (High Performance Liquid Chromatography), which belongs to the field of analytical chemistry, and is used for separating and detecting the dotenorad key intermediate (3, 5-dichloro-4-methoxyphenyl) (1, 1-benzo [d] thiazole-3 (2H)-yl) ketone and related compounds A-F thereof by liquid chromatography. A chromatographic column with phenylsilane bonded silica gel as a filler is adopted, a phosphoric acid aqueous solution is used as a mobile phase A, acetonitrile is used as a mobile phase B, gradient elution is carried out, detection and analysis are carried out, and the content of each compound is calculated. According to the present invention, the dotenorad key intermediate and the related impurity compounds thereof can be effectively separated, and the method has advantages of high sensitivity, high separation degree, good repeatability, good durability, simple operation and stable and reliable result, and has important significance on the realization of the dotenorad drug quality control.

A quinazolinone catalyst with both N-N and C-C axis chirality and its synthesis method and application, its chemical structural formula is shown in Formula 4; Synthesis method: using indole-derived o-aminobenzamide and 1-naphthaldehyde derivative as raw materials, using molecular sieve as dehydrating agent, bromobenzene as reaction solvent, stirring for 4h under the catalysis of chiral phosphoric acid and 10°C, then adding ethyl acetate, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, stirring for 10h under room temperature, TLC tracking reaction to complete formula 3 compound; using formula 3 compound, phenylsilane, trifluoromethanesulfonic acid as raw materials, adding toluene, stirring reaction under 100°C, TLC tracking reaction to end to obtain formula 4 compound. The catalyst prepared by the present invention can be used as a chiral ligand in transition metal-catalyzed asymmetric allylation reaction, with excellent stereoselectivity control effect; the method has mild reaction conditions, low cost and high enantioselectivity.

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 invention discloses a chiral hydrosilane compound as well as a preparation method and application thereof. The structural formula of the chiral hydrosilane compound is shown as a formula (I). The chiral hydrosilane compound can be prepared by two methods, one method comprises the following steps: synthesizing tert-butyldihydrosilane from cheap and easily available phenyl silane through a Grignard reagent reaction, adding a ligand and hexamethyldisilylamino potassium to react with benzyl alcohol in a copper tetracyano hexafluorophosphonate catalysis manner, and carrying out reduced pressure distillation to obtain the chiral hydrosilane compound. And finally, synthesizing a hydrogen silane compound with chirality. And the other method comprises the step of adding a brominated compound and cesium carbonate in a copper metal catalysis process to generate the chiral hydrosilane compound. According to the invention, the range of the product is widened to a great extent, and a foundation is laid for subsequent application and transformation. # imgabs0 #

The invention belongs to the technical field of pharmaceutical analysis, and particularly relates to a method for separating and determining a rupatadine fumarate starting material SM1 and impurities thereof. According to the method, phenylsilane bonded silica gel is adopted as a chromatographic column filler, mobile phases comprise a mobile phase A and a mobile phase B, the mobile phase A is a monopotassium phosphate solution, and the mobile phase B is acetonitrile; the method comprises the following steps: sequentially separating an impurity SM1a, rupatadine fumarate SM1, an impurity SM1o, an impurity SM1j, an impurity SM1g, an impurity SM1m, an impurity SM1i, an impurity SM1n, an impurity SM1k, an impurity SM1f, an impurity SM1b, an impurity SM1l and / or an impurity SM1e through linear gradient elution; the rupatadine fumarate SM1 and 12 known impurities can be separated within 62 minutes by the high performance liquid chromatography constructed by the invention, the analysis time is short, the sensitivity is high, the specificity is strong, and the reproducibility is good.

The invention relates to the technical field of coating materials, in particular to a two-component flame-retardant scratch-resistant coating as well as a preparation method and application thereof. The preparation raw materials comprise a component A and a component B, the component A comprises epoxy resin, phenylsilane, modified nanoparticles, a coupling agent, a flame retardant, a catalyst and a solvent A, and the component B comprises a curing agent and a solvent B; and the epoxy resin comprises one or more of the models of E51, E44, E20, E42, E39, EP-1 and EP-2.

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 invention provides a durable antibacterial environment-friendly marine antifouling coating for machinery as well as a preparation method and application of the durable antibacterial environment-friendly marine antifouling coating, and belongs to the technical field of marine antifouling materials. Nano titanium dioxide; a curing agent; a pigment; the fluorine-containing quaternary ammonium salt polysiloxane prepolymer is prepared by carrying out dehydration condensation reaction on a quaternary ammonium salt silane monomer A, a phenyl-containing silane monomer B and a fluorine-containing silane monomer C in an organic solvent under the action of a basic catalyst; the quaternary ammonium salt compound adopted by the invention has the characteristics of excellent environmental compatibility, outstanding fast-acting antibacterial and algae-killing properties and the like, can endow the surface of a material with continuous microbial inhibition and killing properties, and blocks the colonization and reproduction chain of marine attachment organisms from the source by destroying the integrity of bacterial cell membranes and interfering the activity of biological enzymes, so that the marine attachment organisms can be effectively inhibited. The resistance of the coating to typical fouling organisms such as barnacles and diatom is obviously improved; and meanwhile, the modulus and hardness of the coating can be remarkably improved, so that the coating can better resist scratch, abrasion and collision.

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 invention belongs to the technical field of textile dyeing and finishing production, and discloses a cationic color fixing agent and a preparation method thereof.The cationic color fixing agent is obtained by conducting self-polymerization on dimethyl diallyl ammonium chloride and then conducting cross-linking, and in the cross-linking process, the mass ratio of a dimethyl diallyl ammonium chloride self-polymer to a cross-linking agent is 70-80: 1-4; the cross-linking agent is selected from at least one of pentaerythritol triallyl ether, methyl triallyl silane, tetraallyl silane and triallyl (phenyl) silane, the molecular weight of the cationic monomer is firstly increased by synthesizing the self-polymer, and then cross-linking is performed, so that the gel risk is reduced.

The preparation method specifically comprises the following steps: under the protection of nitrogen, putting hydroxyethyl piperidinol, a catalyst and an organic solvent into a reaction container, dropwise adding an organic solvent of dichlorodiphenyl silane into a reaction system, and after dropwise adding is completed, carrying out a reaction for 2-4 hours, so as to obtain the hindered amine light stabilizer based on organic silicon modification. After reacting for a period of time at a certain temperature, filtering, washing, decolorizing and filtering to obtain the hindered amine light stabilizer based on organic silicon modification. The light stabilizer has the light stability of hindered amine and the high temperature resistance of organic silicon.

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.

The present invention relates to a method for preparing bosylamine by a continuous flow process, and belongs to the technical field of fine chemicals. The method is prepared using D-xylose and acetylacetone as raw materials, through a two-step continuous flow reaction, and the second step reaction uses methyldiphenylsilane as a reducing agent, and in the presence of catalyst poly-L-alanine, the carbonyl group is asymmetric reduced to obtain S-hydroxypropyl tetrahydropyrantriol. The technical solution of the present invention is compared with traditional kettle reaction, not only avoiding the use of boride harmful to the environment and human body, but also avoiding the safety risk problem caused by kettle reaction. After adopting the technical solution of the present invention, the yield of the second step reduction reaction is increased from 39% to more than 95%, and the content of S-configuration product is greater than 99%. Effectively reduce production costs and have environmental friendliness.

The invention belongs to the technical field of coatings, and particularly relates to a multifunctional super-hydrophobic coating as well as a preparation method and application thereof. According to the multifunctional super-hydrophobic coating provided by the invention, the phenyl silane and the long-chain alkyl silane are used for modifying the nano silicon dioxide, and the glycidyl oxypropyl methyl dimethoxy silane and the antibacterial filler are introduced, so that the super-hydrophobic coating is endowed with multiple functions of reducing interface polarization, resisting and killing bacteria, resisting weather and the like; the coating is a multifunctional super-hydrophobic coating and can meet the protection requirements of electrical equipment; the technical problem that in the prior art, a super-hydrophobic coating is single in function is solved.

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.

The invention provides a tetraphenylsilane compound containing carbazole substituent, an intermediate and an organic electroluminescent device, and belongs to the technical field of organic electroluminescent materials. By designing the structure of the tetraphenylsilane compound containing the carbazole substituent group, the tetraphenylsilane compound containing the carbazole substituent group with excellent performance is prepared, so that the tetraphenylsilane compound containing the carbazole substituent group is used as a material of a light-emitting layer; and the prepared organic light-emitting device has relatively high current efficiency, relatively long service life and relatively low driving voltage.

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.