12 results about "Phenylsilane" patented technology

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 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.

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 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.

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 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.