421 results about "Silane compounds" patented technology

Provided is an adhesive composition from which an adhesive layer having excellent heat-resistant durability can be formed. This adhesive composition comprises a (meth)acrylic resin, a crosslinking agent, a silane compound, and an ionic compound, wherein: the (meth)acrylic resin contains, as monomer units, an alkyl (meth)acrylate having a homopolymer glass transition temperature of lower than 0ºC, an alkyl (meth)acrylate having a homopolymer glass transition temperature of at least 0ºC, and a monomer having a polar group; and the ionic compound contains a cyano group-containing anion.

The invention relates to the technical field of coating materials, and discloses a pure titanium micro-arc oxidation coating for a vacuum cup and a preparation method thereof.The preparation method comprises the following steps that surface pretreatment is conducted, specifically, a pure titanium vacuum cup inner container workpiece is sequentially subjected to degreasing, acid pickling and ultrasonic cleaning; preparing an electrolyte, namely adding 15-25 parts by weight of a silicon-containing compound, 5-12 parts by weight of metal salt, 3-8 parts by weight of an antibacterial agent and 1-5 parts by weight of a stabilizer into deionized water, and controlling the pH value to be 8.5-10.5; and performing micro-arc oxidation treatment. According to the invention, a silane compound in the micro-arc oxidation electrolyte contains a high-activity silanol group which is subjected to condensation reaction with titanium hydroxyl on the surface of a pure titanium substrate under the action of an electric field to form stable covalent bonding, so that the bonding strength of the coating and the substrate is enhanced; metal ions generated by metal salt electrolysis are co-deposited with titanium ions through plasma discharge, a composite oxide structure is constructed, and micro defects on the surface of a titanium substrate are sealed.

The invention discloses conductive paste, a preparation method thereof and a radio frequency identification tag. The conductive paste comprises the following raw materials in parts by mass: 30-40 parts of spherical silver powder, 3-6 parts of carbon nanotubes, 20-30 parts of a resin adhesive, 40-50 parts of a diluent and 2-4 parts of a dispersant, the resin adhesive comprises polyurethane resin and an organosilicone modified acrylate monomer in a mass ratio of (8-9): (1-2), and the organosilicone modified acrylate monomer is obtained by hydrosilylation of a hydroxyl acrylate monomer and a hydrogen-containing silane compound in a molar ratio of (1.0-1.1): 1. According to the invention, the contradiction between the conductive performance and fluidity and the product flexibility of the conductive paste can be effectively solved, and the RFID product with high conductivity, printing quality and mechanical flexibility can be prepared.

The invention relates to a binder composition for manufacturing a wood-based material, a method for manufacturing such a wood-based material and such a wood-based material. In order to provide a binder composition for manufacturing a wood-based material, in which the speed of curing can be specifically controlled and at the same time diffusion of the binder into the wood material to be bound is prevented in the best possible way, thereby ensuring a safe, fast and cost-effective manufacturing process with the lowest possible use of binder, fast and cost-effective manufacturing process with the lowest possible binder consumption without reducing the product quality, it is provided that the binder composition comprises an organic phase having at least one polymer adhesive, an aqueous phase, at least one phase transfer catalyst for accelerating the curing of the polymer adhesive and a hydrophilizing agent comprising or formed from at least one silane compound for increasing the hydrophilicity of the polymer adhesive and / or for reducing the penetration of the polymer adhesive into the material of the wood-based material to be bonded.

This fluoropolyether-based curable composition contains(A) a perfluoropolyether compound having two or more alkenyl groups per molecule,(B) a fluorine-containing organo hydrogen silane compound having two or more hydrosilyl groups having a specific structure,(C) a platinum group metal-based catalyst, and(D) a specific amount of at least one filler selected from organic resin powders and carbon black powders.Such a fluoropolyether-based curable composition can provide a cured product that has endurance against fluoric acid and electrolytic solutions for lithium ion batteries, has fine mechanical properties, and has excellent releasability because of not having uncured portions resulting from low compatibility between structural ingredients.

The present invention relates to: an organosilane compound; a hair coloring composition comprising same; and a hair coloring shampoo comprising same. Also, the present invention relates to a composition for hair. By comprising an organosilane compound having a specific structure, the composition according to the present invention can achieve the effects of preventing and reducing hair frizz, preventing thermal damage to hair, and styling hair.

The purpose of the present invention is to provide a copper-based material having excellent adhesion and heat resistance, a method for producing a copper-based material, and a laminate. The copper-based material according to the present invention has a first surface-treated layer on or on the surface of the copper-based material, and a second surface-treated layer between the copper-based material and the first surface-treated layer, the first surface-treated layer being a layer formed from a first agent, and the second surface-treated layer being a layer formed from a second agent. The first agent contains: a copolymer (A) of a polyphenylene ether resin having a hydroxyl group at one terminal and / or both terminals of the molecule and a silane compound having an acyloxyalkyl group, a hydrolysate thereof, or a condensate thereof; and water, the second surface treatment layer being formed from a second agent containing: a metal compound (B) containing at least one metal element selected from the group consisting of zirconium, titanium, and trivalent chromium; and a compound (D) containing elemental vanadium.

The present disclosure provides silane compounds and silicone polymers, methods of preparing the silane compounds and silicone polymers, and use of the silane compounds and silicone polymers. The present disclosure further provides use of the silane compounds and silicone polymers as antidegradants.

The purpose of the present disclosure is to provide an article comprising a surface treatment layer having favorable durability.　This article comprises a base material (A), a water and oil repellent layer (C), and a silicon oxide layer (B) which is disposed between the base material (A) and the water and oil repellent layer (C) and contains alkali metal atoms. In the silicon oxide layer (B), the average value of the concentration of alkali metal atoms in a region having a depth of 0.1-0.3 nm from a surface in contact with the water and oil repellent layer (C) is 1.4×1018 atoms / cm3 to 2.6×1020 atoms / cm3. The water and oil repellent layer (C) is formed from a silane compound containing an Si atom to which a hydroxyl group or a hydrolyzable group is bonded, and the structure of the silane compound does not include a fluorine atom.

Provided is a curable silicone composition that can form a cured product having good adhesion strength to a substrate made of polyphenylene. The curable silicone composition of the present disclosure comprises (A) an organopolysiloxane having at least two alkenyl groups per molecule, (B) an organopolysiloxane having an average of two or more silicone atom-bonded hydrogen atoms per molecule and free of alkenyl groups, (C) an α-silane compound having a specific chemical structure, and (D) a curing catalyst.

The present application relates to the field of polymerization aids, and aims at the problem of easy precipitation of crosslinking aids for photovoltaic adhesive films, and provides a precipitation-preventing crosslinking aid polyolefin grafting material and a preparation method and application thereof.The precipitation-preventing crosslinking aid polyolefin grafting material comprises the following components: a polyolefin elastomer, a first monomer and a second monomer; the first monomer is at least one selected from triallyl isocyanurate, triallyl cyanurate and an acrylate compound containing 2-4 carbon-carbon double bonds; and the second monomer is a dialkoxy silane or trialkoxy silane compound containing a carbon-carbon double bond.The present application uses a polyolefin elastomer as a base, adds the first monomer and the second monomer to obtain a high grafting rate, low crosslinking photovoltaic crosslinking aid grafting material, the crosslinking aid grafting material is free of crystal point impurities, has good transparency, high effective grafting rate, small melt index drop, high volume resistivity and high transparency, and is suitable for photovoltaic adhesive films.

An object of the present invention is to provide rubber-bonded cellulose fibers that are less likely to cause an increase in viscosity or melt viscosity when added to various resins. Rubber-bonded cellulose fibers that solve the above problem contain cellulose fibers; a plurality of rubber particles disposed on surfaces of the cellulose fibers and having an average particle size of 300 nm or less; and a silane compound that bonds the cellulose fibers and the rubber particles.

The invention discloses an electrochemical method of deuterated silane. The method comprises the following steps: in a protective atmosphere, mixing substituted silane, an electrolyte, a nickel catalyst, a ligand and deuterium water in a solvent, carrying out an electrochemical deuterization reaction under a constant current condition, and carrying out post-treatment to prepare the deuterated silane compound. The method takes deuterium water as a deuterium source, and is green, economical, cheap and easy to obtain; a catalytic amount of nickel and silane form a silicon-nickel intermediate, so that the polarity of silicon is reversed, and the generation of a silane self-coupling product and a silanol byproduct is effectively avoided; the electrochemical synthesis method has the characteristics of mild reaction conditions, cleanness, greenness and simplicity in reaction operation. The electrochemical synthesis method provided by the invention realizes successful preparation of the natural product post-modified deuterated silane, and has important significance in the aspects of drug development and deuterated compound research; the electrochemical synthesis method disclosed by the invention can resist high current to prepare the ten-gram-grade deuterated silane, and has a wide industrial application prospect. In addition, the deuterated silane synthetic product can be used as a silicon deuteration reagent, the practicability of the deuterated silane synthetic product in unsaturated bond reduction reaction is proved, and the deuterated silane synthetic product has a wide development prospect.

The application provides a kind of nano photothermal hydrophobic material and preparation method and application, it is related to coating filler technical field.A kind of nano photothermal hydrophobic material, with polypyrrole nano photothermal material as core, surface is wrapped with fluorine-containing silane modified silica layer;Wherein polypyrrole nano photothermal material is with polypyrrole modified photothermal nano material;Its preparation method, polypyrrole nano photothermal material is dispersed in solvent, silane compound is added, silane compound is hydrolyzed, and polypyrrole nano photothermal material surface is wrapped with silica shell;Fluorine-containing silane is added, and fluorine-containing silane is grafted to silicon shell, to obtain nano photothermal hydrophobic material.The prepared nano photothermal hydrophobic material has photothermal conversion, superhydrophobic performance, and the preparation cost is lower, can be used for coating filler, under low temperature and high humidity environmental conditions, the deicing effect is remarkable, and the icing time is prolonged.

An object of the present application is to provide a urethane-based adhesive composition which is excellent in bonding durability to an olefin resin. The present application is a urethane-based adhesive composition containing: a urethane prepolymer having an isocyanate group; an isocyanurate compound of 1,5-pentanediisocyanate and / or 1,6-hexanediisocyanate; and a secondary amino silane compound.

The present invention provides a negative type optical sensitivity composition and use thereof, wherein the negative type optical sensitivity composition comprises: 50 to 60 weight percent of an alkali-soluble resin; 10 to 20 weight percent of an acrylic monomer or oligomer thereof; 3 to 8 weight percent of a photoinitiator; 0.3 to 1 weight percent of an adhesion agent, wherein the adhesion agent is a nitrogen-containing silane compound; and a balance of a solvent.

The present invention relates to a specific triazinesilane compound, its oligomer, a mixture containing said compound and / or said oligomer, and respective storage and working solutions.Furthermore, the present invention relates to a synthesis method for said specific triazinesilane compound, and the use of said working solution as a surface treatment liquid.

To provide a thermosetting composition that exhibits superior thixotropic properties and forms a cured product having both thermal and electrical conductivity, as well as a composition for fixing a semiconductor element comprising the thermosetting composition, and a composition for forming a thermally and electrically conductive film comprising the thermosetting composition.SOLUTION: There are provided a thermosetting composition comprising the following components (A) and (B), a composition for fixing a semiconductor element comprising the thermosetting composition, and a composition for forming a thermally and electrically conductive film comprising the thermosetting composition. Component (A): a silane compound polymer having a repeating unit [repeating unit (1)] represented by formula (a-1) [R1 represents an unsubstituted hydrocarbon group having 1 to 12 carbon atoms or a hydrocarbon group having 1 to 12 carbon atoms with a substituent]. Component (B): a carbon-based filler.SELECTED DRAWING: None

The invention belongs to the technical field of thermal insulation foaming materials, and particularly relates to an in-situ closed-cell foaming material as well as a preparation method and application thereof. The in-situ closed-cell foaming material is prepared from the following raw materials through foaming and curing reactions: 40-60 parts by weight of a melamine prepolymer; 40 to 60 parts by weight of isocyanate; 1-5 parts by weight of a hydrolysable silane compound; 0.05 to 0.3 part by weight of a catalyst; 5-15 parts by weight of an inorganic cementing material; 1-10 parts by weight of a physical foaming agent; the content of bound water in the melamine prepolymer is 2.0 to 5.0 weight percent. The in-situ closed-cell foaming material provided by the invention has excellent thermal insulation performance, high specific strength and excellent waterproof, moisture-proof and anti-seepage performance, and the combustion performance grade is A2.

To provide a modified elastomer composition, a crosslinked elastomer composition, and a molded article that have high ductility, excellent moldability (specifically, extrusion moldability), and high temperature resistance. [Solution] A modified elastomer composition comprising: (A) ethylene-α-olefin copolymer rubber, (B) propylene resin, (C) at least one of styrene-conjugated diene block copolymer and hydrogenated styrene-conjugated diene block copolymer, and (D) an unsaturated silane compound, and grafted with (E) a peroxide, wherein when the total of components (A) to (C) is 100 parts by mass, component (A) is 30 parts by mass or more and 75 parts by mass or less, component (B) is 14 parts by mass or more and 60 parts by mass or less, and the mass ratio of the content of component (C) to the content of component (B) (component (C) / component (B)) is 0.25 or more and 1.00 or less.

A curable composition that contains a silane compound, a non-tin-based curing catalyst, and an organic polymer having a bifunctional dialkoxysilyl group as a reactive silicon group is provided. The curable composition exhibits quick curability. In the curable composition, an amidine compound and a titanium compound are used in combination as the curing catalyst, and a silane condensate having a specific structure is used as the silane compound.

Compositions (e.g., coatings) containing fingerprint-inhibiting materials, as well as related articles, methods, and kits, are generally described. In some embodiments, a coating comprises a fingerprint-inhibiting material configured to reduce, inhibit, and / or prevent fingerprint adhesion on a surface to which the coating is applied. In some embodiments, the fingerprint-inhibiting properties of a coating (e.g., an anti-fingerprint coating) may be provided by a silane compound containing a polysiloxane that reduces the surface energy of the surface to which the coating is applied and makes the coating hydrophobic and / or oleophobic. According to some embodiments, in addition to providing fingerprint resistance, the coating may be chemically inert, mechanically robust, optically clear, and / or slippery.

The present invention relates to a method for preparing a procatalyst suitable for preparing a catalyst composition for olefin polymerization, the method comprising the steps of: step A) providing or preparing a Grignard compound; step B) contacting the Grignard compound with a silane compound to produce a solid support; step C) activating the solid support to obtain an activated solid support, which comprises two sub-steps: step C1) contacting the solid support obtained in step B) with at least one first activating compound and a second activating compound; and step C2) a second activation step of contacting the partially activated solid support obtained in step C1) with an activating electron donor; and step D) reacting the activated solid support obtained in step C) with a halogen-containing Ti compound, optionally an activator, and at least one internal electron donor in several sub-steps to obtain the procatalyst. The present invention also relates to a procatalyst, a catalytic system comprising the procatalyst, a method for preparing polyolefins using the catalyst system, and the polyolefins obtained thereby.

The invention belongs to the technical field of drilling fluid plugging agents, and particularly relates to a water-based drilling fluid high-temperature-resistant plugging agent and a preparation method and device thereof.The water-based drilling fluid high-temperature-resistant plugging agent is prepared from, by weight, 20-30 parts of walnut shell powder, 10-20 parts of calcium silicate, 5-10 parts of mica sheets, 10-17 parts of a structure reinforcing agent, 1-3 parts of a dispersing agent and 1-2 parts of a lubricating agent. The structure reinforcing agent is composed of 5-10 parts of a fiber material and 5-7 parts of sodium silicate, the dispersing agent is a phosphate dispersing agent, and the lubricating agent is a silane compound lubricating agent; sodium silicate has high thermal stability and can maintain good structure and function at high temperature, the plugging agent can adapt to the environment with high stability, the dispersing agent and the lubricating agent are used for improving the dispersity and fluidity of the plugging agent, the plugging agent is helped to play a role under different operation conditions, and the plugging agent has good application prospects. The plugging agent is prepared by compounding the organic raw materials and the inorganic raw materials, so that the high-temperature-resistant and plugging effects of the plugging agent are enhanced.

Process for preparing an enantiomerically enriched form of 2-[2-(2-chlorothiazol-5-yl)-2-hydroxy- ethyl]sulfanyl-6-hydroxy-3-methyl-5-phenyl-pyrimidin-4-one (compound (I)) or a tautomer thereof which comprises reducing 2-[2-(2-chlorothiazol-5-yl)-2-oxo-ethyl]sulfanyl-6-hydroxy-3-methyl-5- phenyl-pyrimidin-4-one (compound (II)) with a silane compound in the presence of a chiral zinc compound.

The invention relates to a hydrophobic paint surface protective film in the technical field of automobile paint surface protection, and solves the problems of difficulty in coordination and unification of hydrophobic performance and self-repairing function and harsh activation conditions in the prior art. The protective film comprises a matrix layer and a hydrophobic layer, the matrix layer is composed of a polyurethane main chain and a hydrogen bond cross-linked network, the hydrogen bond cross-linked network is formed by hydrogen bond cross-linking of ureido and carboxyl, the content of the ureido is 7.5-8.5 mol%, and the content of the carboxyl is 3.5-4.5 mol%; the hydrophobic layer contains a perfluoroalkyl silane compound with the carbon chain length of C6-C12; a concentration gradient transition interface is formed between the matrix layer and the hydrophobic layer, and the thickness of the interface is 5-15 microns. The hydrogen bond dissociation degree of the protective film reaches 0.25-0.35 at 70-80 DEG C to activate the self-repairing function, and the hydrogen bond dissociation degree is less than 0.08 at 25-40 DEG C to maintain the hydrophobic property. The preparation method adopts gradient coating and staged curing treatment. Coordination and unification of hydrophobic and self-repairing functions are realized, the activation temperature is proper, and the repairing efficiency is high.

Provided are a polymer-coated substrate in which a polymer layer formed on the surface of a substrate is stable for a long period of time even in a liquid environment, and a medical analysis device including the polymer-coated substrate. Included is a polymer-coated substrate which includes a substrate, a silane compound layer formed on a surface of the substrate, and a polymer layer formed on the silane compound layer.

This invention discloses a method for preparing polypropylene, polypropylene and low-odor polypropylene resin, and the method for preparing the same, belonging to the field of polypropylene resin technology. The method for preparing polypropylene includes the following steps: (1) mixing propylene, alkyl aluminum, silane compounds, a highly active catalyst, and a polymeric nucleating agent to perform propylene prepolymerization to obtain a propylene prepolymer; (2) mixing the propylene prepolymer with hydrogen and an olefin, and performing propylene polymerization under heating and pressure to obtain polypropylene; the olefin is selected from one or more of propylene, ethylene, and α-olefins, and contains at least propylene; the method adds a highly active catalyst and a polymeric nucleating agent during the polypropylene synthesis process, resulting in a polypropylene resin prepared from the polypropylene having low odor and excellent rigidity and toughness.

The invention discloses a preparation method of a dialkynyl silane compound, which belongs to the technical field of organic synthesis and comprises the following steps: sequentially adding a reducing agent, an organic solvent, alkynyl bromide and chlorosilane into a reaction container, and reacting at 20-60 DEG C for 6-36 hours to obtain a mixture A; wherein R1 is allyl, alkyl or aryl; wherein R2 is allyl, alkyl or aryl; wherein R3 is an alkenyl group, an alkyl group, an alkoxy group or a silicon group; wherein R is halogen, alkyl, aryl, alkoxy, ester group, cyano or carbonyl; diluting the mixture A with ethyl acetate, adding silica gel powder, and performing vacuum concentration to remove the reaction solvent to obtain a mixture B; and separating the mixture B through thin-layer chromatography or column chromatography to obtain the target product dialkynyl silane compound. According to the method, dialkynyl silane substituted by different alkynyl groups can be obtained at the same time, the chemical selectivity is good, and dialkynyl silane which is not easy to obtain by other methods can be synthesized.

A method for producing hydrophobic dry surface-modified fibrillated cellulose to improve dispersion in hydrophobic matrices includes: providing micro-fibrillated cellulose suspension of 5-30 wt % in water; adding a surfactant to the suspension with a mass ratio of surfactant to micro-fibrillated cellulose suspension of 0.1-2.0 wt %; adding a surface modifier to the suspension with a mass ratio of surface modifier to micro-fibrillated cellulose dry matter of 20-300 wt %, with the surface modifier obtained through a chemical reaction of a silane compound with a phenolic compound to create covalent bonds between the silane compound and the phenolic compound; covalently binding the surface modifier to the micro-fibrillated cellulose via (i) hydrolysis of the surface modifier to form reactive silanol groups and (ii) condensation of the silanol groups with available OH-groups of the micro-fibrillated cellulose; adding a plasticizer to the suspension of surface modified micro-fibrillated cellulose; drying the suspension.