243 results about "Silane compounds" patented technology

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.

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.

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.

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.

An electrolyte, a lithium secondary battery and a power utilization device, the electrolyte comprising a first solvent, a silane compound containing a carbon-carbon double bond and a cyclic lithium borate compound, the first solvent comprising a cyclic carbonate compound; wherein the mass content W3 of the cyclic carbonate compound, the mass content W1 of the silane compound containing a carbon-carbon double bond and the mass content W2 of the cyclic lithium borate compound satisfy: 0.001≤(W1+W2) / W3≤2.67 based on the total mass of the electrolyte. The combination of the silane compound containing a carbon-carbon double bond and the cyclic lithium borate compound can improve the flexibility and thermal stability of the SEI film, thereby reducing the gas generation degree during the cycle and storage of the lithium secondary battery, and improving the storage performance, fast charging performance and cycle performance of the lithium secondary battery.

This invention provides a bifunctional Janus nano-silica, its preparation method, and its application, belonging to the field of UV-curable coating technology. This invention uses a silicon source and fluorosilane compounds to design nano-SiO2 into Janus nanoparticles. One side of the prepared bifunctional Janus nano-silica is modified with fluorine-containing organic functional group segments, and the other side is modified with polymerizable unsaturated double bond segments, allowing it to polymerize with monomers and oligomers in UV-curable coatings. By filling the UV-curable coating with these fluorine-containing segments and crosslinkable curable segments, high-performance novel functional coatings can be developed, meeting the material's requirements for special properties such as high wear resistance, corrosion resistance, fingerprint resistance, and radiation resistance.

The present invention contains an organic polymer (A) that has a reactive silicon group, a silane compound (B) that has a molecular weight of 1,500 or less, and a curing catalyst (C). The organic polymer (A) contains a (meth)acrylic acid ester polymer (A1). The silane compound (B) is represented by (R2)3-bX2 bSi-R3-Si(R2)3-bX2 b. R2 represents a monovalent hydrocarbon group having 1 to 20 carbon atoms, and X2 represents a hydroxyl group or a hydrolyzable group. b is 1, 2, or 3. R3 represents a divalent hydrocarbon group having 1 to 50 carbon atoms.

Compositions and methods for impurity removal are provided. A method comprises obtaining a first solution comprising an amino silane compound and a halide impurity. The method comprises contacting the first solution with an anion exchange resin to obtain a second solution. The second solution comprises less of the halide impurity than the first solution.

A non-fluorinated hydrophobic and oleophobic coating and a method for applying it to optically transparent materials (OTMs) are disclosed, wherein the hydrophobic and oleophobic coating is a compound consisting of at least one solvent with a hydroxyl group, at least one alkylsiloxane / silane compound as a hydrophobic agent, and at least one siloxane and / or silane with an active hydrogen bond donor as an oleophobic agent. The coating provides an improved surface appearance and more effective protection against environmental influences.

A method for producing a polycarbosilane (PCS) for silicon carbide fibers, the method does not include adjusting a molecular weight of PCS, the method comprises the steps of: (a) heating a composition containing a cyclic silane compound in a liquid-phase reaction vessel 1 to vaporize the composition; (b) heating the composition in gaseous form obtained by the step (a) to produce a PCS; and (c) returning the PCS produced by the step (b) to the liquid-phase reaction vessel 1, and returning gaseous components having cooled to the liquid-phase reaction vessel 1. Each of the steps is repeated, thereby producing a PCS having a number average molecular weight (Mn) of 1250 or more and less than 6000 and a ratio (Mw / Mn) of a weight average molecular weight (Mw) to the number average molecular weight (Mn) of 4.5 or more and 20.0 or less.

To provide a photosensitive resin composition capable of forming a permanent resist excellent in insulation reliability, a photosensitive element using the photosensitive resin composition, a printed wiring board, and a method for manufacturing a printed wiring board.SOLUTION: The photosensitive resin composition according to the present disclosure includes (A) an acid-modified vinyl group-containing resin, (B) a photopolymerizable compound, (C) a photopolymerization initiator, and (D) an isocyanate group-containing silane compound.SELECTED DRAWING: None

The invention discloses a preparation method of high-temperature-resistant modified carboxymethyl hydroxypropyl guar gum in the technical field of oilfield chemistry, which comprises the following steps: dispersing a specific star-shaped triazine block copolymer, mixing with a carboxymethyl hydroxypropyl guar gum solution, heating, reacting, drying and crushing to obtain a final product. Wherein the star-shaped triazine block copolymer is prepared by reacting melamine with maleic anhydride to form a core, sequentially grafting polyethylene glycol amine and a polycaprolactone chain segment, and carrying out end capping by a silane compound. The copolymer can be combined with a guar gum matrix through multiple effects, and the network structure stability and the viscosity retention rate of the composite colloid under the high-temperature condition are remarkably improved. The preparation method provided by the invention is simple and convenient in process, and the obtained modified product is particularly suitable for fracturing operation of high-temperature oil and gas reservoirs.

The present application provides a method capable of improving safety and reducing environmental load, and capable of efficiently producing a polysiloxane having a siloxane structural unit. The above technical problem can be solved by a method including a polymerization step in which a silane-based compound selected from a prescribed diaryloxy silane compound, a prescribed dialkoxy silane compound, and a prescribed silicon compound is polymerized with a dihydroxy compound in the presence of at least an ester exchange catalyst containing a phosphorus compound, and in the polymerization step, a polysiloxane having a siloxane structural unit represented by any one of Formula (1-1) to Formula (1-4) is produced. In the formulae, R 1 ~R 10 , R 30 ~R 33 , Z1, Z2, J1, K1, A1, A2, L1, L2, and X are as described in the specification.

The refrigerator oil according to an exemplary embodiment of the present disclosure includes a silane compound including at least one of a glycidyl group or an isocyanate group. A heat pump according to an exemplary embodiment of the present disclosure comprises: a heat exchanger comprising a heat exchanger comprising trifluoroiodomethane; r-13I1), and a refrigerant of R-13I1); and the refrigerating machine oil. The chemical stability of the refrigerator oil according to the present disclosure at high temperature and / or high pressure can be improved.

A non-fluorinated hydrophobic and oleophobic coating and method for applying to optical transparent materials (OTMs) is disclosed, wherein the hydrophobic and oleophobic coating is a compound formed from at least one solvent with a hydroxy group, at least one alkyl siloxane / silane compound as a hydrophobic agent, and at least one siloxane and / or silane with an active hydrogen bond donor as an oleophobic agent. The coating provides better surface cosmetics and more effective protection from environmental insults.

The invention relates to a thermoplastic polyamide molding compound consisting of the following components: (A) 30 to 74.5% by weight of at least one partially crystalline, partially aromatic copolyamide 6T / Z having a melting point of at least 270 DEG C, the polyamide unit Z being composed of at least one lactam or aminocarboxylic acid, the polyamide unit Z being composed of at least one polyamine, the polyamide unit Z being composed of at least one polyamine, and the polyamide unit Z being composed of at least one polyamine; and / or from polyamide units, different from 6T, consisting of at least one diamine and at least one dicarboxylic acid, the proportion of 6T in 6T / Z being more than 50 mol% in terms of the molar proportion of all polyamide units; (B) 25% to 50% by weight of glass fibers having an average diameter of 5 m to 8 m, the glass fibers being coated by means of a casting coating composition comprising (b1) at least one silane compound (b2) at least one polymer or copolymer based on unsaturated carboxylic acids and / or unsaturated carboxylic acid anhydrides, and (b3) at least one epoxy resin, polyurethane resin or polyamide resin, with the provision that if component (b3) is a system comprising a carboxylic acid and / or an anhydride, the casting coating composition can also contain no component (b2); (C) from 0.5 wt% to 8 wt% of an impact modifier; (E) from 0% to 20% by weight of an amorphous, partially aromatic polyamide; (D) 0% to 10% by weight of an additive different from (A)-(C) and (E); and wherein the sum of the components (A) to (E) results in 100% by weight of a polyamide molding compound.

Provided is an organopolysiloxane prepolymer that can provide a cured body having excellent heat resistance and low dielectric characteristics. An organopolysiloxane prepolymer according to an embodiment of the present invention is obtained through condensation of: (A) a polydimethylsiloxane having silanol groups at both terminals; (B) at least one selected from the group consisting of silane oligomers having an alkoxy group, complete or partial hydrolysates of said silane oligomers, and condensates of said oligomers; (C) at least one selected from the group consisting of tetramethoxysilane and tetraethoxysilane; and (D) a silane compound having a fluoroalkyl group. Regarding the molar ratio of (B) the silane oligomer having an alkoxy group and (C) said at least one selected from the group consisting of tetramethoxysilane and tetraethoxysilane, (C) said at least one selected from the group consisting of tetramethoxysilane and tetraethoxysilane is contained in an amount of 0.25-5.59 mol with respect to 1 mol of (B) the silane oligomer having an alkoxy group.

This method for producing a cyclic silane compound comprises: a first step for obtaining a reaction solution containing a chain polysilane compound by subjecting a silane compound to a polymerization reaction in a mixture containing metallic sodium and an aromatic hydrocarbon-based solvent; and a second step for obtaining a cyclic silane compound by subjecting the chain polysilane compound to a decomposition reaction in a solution obtained by mixing the reaction solution with tetrahydrofuran and a polycyclic aromatic hydrocarbon or a polyphenyl hydrocarbon.

The invention discloses a silicon material surface solid electrolyte membrane and a preparation method and application thereof. The method comprises the following steps: firstly, carrying out hydroxylation treatment on a silicon material by adopting a mixed solution of hydrogen peroxide and concentrated sulfuric acid; then carrying out hydrolytic polymerization reaction on a hydrolyzable silane compound on the hydroxylated surface to form a layer of flexible organic film; and finally, infiltrating with a lithium ion battery electrolyte, and forming a compact solid electrolyte membrane on the surface of the silicon material in situ to obtain a silicon / solid electrolyte integrated structure. And the hydrolysable silane compound comprises alkoxy silane and chlorosilane. The solid electrolyte interface layer which is firm in combination, flexible and ion-conducting is constructed on the surface of the silicon material through a simple three-step method, the problem of volume expansion of the silicon-based negative electrode is effectively solved, and the cycling stability and the capacity retention ratio of the battery are improved. The method is simple in process, low in cost, environment-friendly and easy for large-scale production.