43 results about "Silanol" patented technology

The application discloses a preparation method of a composite antioxidant and application thereof, and belongs to the field of high polymer materials. In the application, a ring octene and a silicon-containing cyclic olefin monomer are subjected to metathesis copolymerization under the action of a metathesis catalyst, a silicon-containing polymer is obtained after chemical hydrogenation, and then the composite antioxidant is obtained after hydrolysis and mixing with lignin. The main chain of the composite antioxidant is a saturated hydrocarbon chain, the compatibility with polyethylene is high, the silicon-containing polymer is hydrolyzed to generate active silanol, the active silanol is efficiently bonded with lignin, and the lignin provides natural polyphenol antioxidant function. The application realizes efficient antioxidant of the composite material, high compatibility and long-term durability, and provides a new idea for high-performance environment-friendly high polymer composite materials.

The application relates to the field of organic chemistry, in particular to a method for photocatalytic synthesis of silanol or silyl ether. The application provides a method for photocatalytic synthesis of silanol or silyl ether compound, in which, under the condition of existence of an iridium catalyst and an organic solvent, hydrosilane is reacted with any one of water, alcohol or phenol under light to obtain silanol or silyl ether. The synthesis method has high yield and selectivity, low catalyst consumption, mild reaction condition and high environmental protection and efficiency.

The present invention aims to provide silica particles, silica sols, and polishing compositions that are less likely to cause defects in the object to be polished. The present invention relates to silica particles that satisfy the following formula (1), where x (mass%) is the mass percentage of alkoxy groups in the silica particles and y (mass%) is the mass percentage of silanol groups in the silica particles. y(mass%)< 8x(mass%)+0.5 (1)

Provided herein is a method of sequentially isolating DNA and RNA from a sample, the method comprising: contacting the sample with a solid support comprising surface silanol groups in the presence of an aqueous nucleic acid purification buffer to provide a DNA-bound solid support; removing the DNA-bound solid support from the sample; contacting the sample with a solid support comprising surface carboxyl groups in the presence of the aqueous nucleic acid purification buffer to provide an RNA-bound solid support; and removing the RNA-bound solid support from the fluid sample, wherein the aqueous nucleic acid purification buffer comprises a polar aprotic solvent. Also provided are kits comprising the purification buffer and solid support, use of the kits in an automated nucleic acid analysis platform, and a nucleic acid analysis apparatus comprising an automated nucleic acid analysis platform and the above kits.

This invention provides an alkali-generating agent and a curable resin composition that exhibit excellent storage stability in a liquid, high catalytic activity at the desired curing temperature, and induce a curing reaction in a short time. An alkali-generating agent comprises a pyridinium cation and an anionic residue of an organic or inorganic acid, and is represented by the following formula (a). (In formula (a), A represents a divalent hydrocarbon group with 1 to 8 carbon atoms that may contain heteroatoms; R1 to R5 independently represent hydrogen atoms or electron-donating groups; R1 and R2, R2 and R3, R3 and R4, and R4 and R5 can be bonded to form a ring structure. R6 to R5...) 10 Each of the following groups independently represents a hydrogen atom, halogen atom, hydroxyl group, alkoxy group, mercapto group, sulfide group, silyl group, silanol group, nitro group, nitroso group, cyano group, sulfinic acid group, sulfonyl group, sulfonic acid group, phosphono group, oxophosphono group, phosphonyl group, phosphonate group, amino group, or ammonium group, R6 and R7, R7 and R8, R8 and R9, R9 and R 10 They can be bonded separately to form a ring structure.

This utility model relates to the field of silicone oil waste gas treatment technology, and discloses a silicone oil reactor waste gas collection and treatment device, including a collection component. The collection component is used for waste gas collection and treatment. The collection component includes an outer pipe body, an inner pipe body, a flange end, and a guide block. The inner pipe body is sleeved inside the outer pipe body. Each end of the outer pipe body and the inner pipe body is fixedly connected to a flange end. The guide block array is arranged inside the inner pipe body, and each guide block is fixedly connected to the inner wall of the inner pipe body. Through the cooperation of the internal components of the collection component, heat transfer oil is continuously injected into the space between the outer pipe body and the inner pipe body. The heat transfer oil keeps the internal space warm and prevents the internal space temperature from falling below the dew point, which would cause the chlorosilane monomers in the waste gas to undergo hydrolysis reaction. The generated silanols then condense into viscous siloxane polymers. The components in the guide block guide the waste gas, accelerates and prevents backflow.

Provided is an organopolysiloxane prepolymer that can provide a cured article having excellent heat resistance and adhesion. An organopolysiloxane prepolymer according to an embodiment of the present invention is a condensation product of: (A) a polydimethylsiloxane having silanol groups at both terminals; (B) at least one substance selected from the group consisting of silane oligomers having an alkoxy group, complete or partial hydrolysates of said silane oligomers, and condensation products of said oligomers; (C) at least one substance selected from the group consisting of tetramethoxysilane and tetraethoxysilane; and (D) a silane compound having a phenyl group.

The application relates to the technical field of skin care products, and particularly discloses a skin care freeze-dried powder containing collagen polypeptides and a preparation method thereof. The freeze-dried powder comprises active components, synergistic repair polysaccharides, moisturizers, freeze-drying protectants and preservatives and the like. The core of the freeze-dried powder is that the active components are modified fish collagen peptides which are cross-linked by glutamine transaminase and modified by methyl pyrrolidone silanol ketone, so that the stability and biological activity of the product are significantly improved. Meanwhile, a specific compounded polysaccharide system of beta-glucan, tremella polysaccharide and sodium hyaluronate is adopted in the formula, and a moisturizer prepared by ultrasonic cross-linking of chondroitin sulfate and sodium alginate is adopted, so that the components synergistically act to jointly enhance the repair and moisturizing effects and use skin feeling of the product. The application also provides a corresponding preparation method. Through an optimized freeze-drying process, the problems of traditional freeze-dried powder, such as easy moisture absorption, single effect and poor reconstitution are effectively solved, and finally a skin care freeze-dried powder product with excellent comprehensive performance is obtained.

[Problem] To provide a surface-treated galvanized steel sheet, a resin film-coated steel sheet, and a building panel having excellent corrosion resistance or processing adhesion with a resin film. [Solution] A surface-treated galvanized steel sheet comprising a steel sheet, a zinc plating layer formed on the steel sheet, a first chemical treatment coating layer formed on the zinc plating layer containing cobalt metal in an amount of 5 mg / m² or more and less than 30 mg / m², and a second chemical treatment coating layer formed on the first chemical treatment coating layer comprising (a) a zirconium component, (b) a bonding component based on the dehydration condensation of a silanol group, and (c) a urethane bonding component.

This invention belongs to the field of TVS chip technology, specifically relating to a low-leakage TVS chip and its fabrication method. The invention uses the methacryloyloxy group of KH570 as a hydrophobic group, grafted onto the surface of a SiO2 passivation layer via Si-O-Si bonds, replacing the hydrophilic silanol groups (-Si-OH) on the SiO2 surface, significantly reducing surface energy. The cross-linked layer formed by polymerization with MMA double bonds can prevent the adsorption of moisture in humid environments, improving the leakage suppression performance of the TVS chip in humid environments. Through KH570 chemical anchoring, micropores and defects on the surface of the SiO2 passivation layer are filled, reducing leakage channels for charge carriers. The dense layer formed by the cross-linking polymerization of KH570 and MMA can reduce the interface state density on the SiO2 surface, suppressing surface-state-induced leakage, thereby improving the leakage suppression effect of the TVS chip.

The objective is to provide a curable composition that exhibits excellent adhesion to the substrate and the hard coat layer, and that can form a layer that exhibits high surface hardness when the hard coat layer is laminated. [Solution] The curable composition of the present disclosure is characterized by comprising a first epoxy compound which is an organosiloxane containing two or more alicyclic epoxy groups, a second epoxy compound, a polyorganosiloxane having a silanol group, and a third epoxy compound or oxetane compound. Preferably, the composition comprises the first epoxy compound, the second epoxy compound, the polyorganosiloxane having a silanol group, and the oxetane compound.

Methods for selective deposition of silicon oxide films on metal or metallic surfaces relative to dielectric surfaces are provided. A dielectric surface of a substrate may be selectively passivated relative to a metal or metallic surface, such as by exposing the substrate to a silylating agent. Silicon oxide is then selectively deposited on the metal or metallic surface relative to the passivated oxide surface by contacting the metal surface with a metal catalyst and a silicon precursor comprising a silanol.

The application relates to a method for evaluating adsorption of organic matters on silicon dioxide based on molecular dynamics simulation, which comprises the following steps: constructing a hydroxylated silicon dioxide surface model; wherein the density of silanol on the hydroxylated silicon dioxide surface is 0-9.4 OH / nm 2 ; constructing an organic matter molecular model and inserting the organic matter molecular model into the hydroxylated silicon dioxide surface model to obtain an organic matter / silicon dioxide model; performing molecular dynamics simulation on the organic matter / silicon dioxide model; and evaluating the obtained simulation result. The application directly reveals the interaction between different organic matter molecules and different hydroxylated silicon dioxide surfaces at an atomic scale, evaluates the interfacial activity of the formed silicon dioxide surfaces with different hydroxylization degrees and different ionization degrees, and can provide important theoretical guidance for improving the crude oil recovery rate, mineral flotation efficiency, solid surface self-cleaning and other fields.

[Problem] To provide a composition which can contain a large amount of a functional inorganic filler, is sufficiently hard at room temperature in an uncured state, has sufficient hardness even when compression-molded, has excellent hot melt properties and the like characterized by high fluidity at high temperatures, and gives a cured product. [Solution] Provided is a curable silicone composition characterized by: comprising (A) an organopolysiloxane resin that has a softening point of 30°C or more, has a curing reactive functional group, and contains 20 mol% or more of a T-unit, (B) an organohydrogenpolysiloxane, (C) hydrosilylation reaction catalyst-containing thermoplastic fine resin particles, (D) a functional inorganic filler, and (E) an organopolysiloxane resin that does not have a hydrosilyl reactive functional group in the molecule, that has a silanol group content of 5.0 mol% or less, and that contains 20 mol% or more of a T-unit; and exhibiting hot melt properties as a whole. Also provided are a molded product of the curable silicone composition and a use thereof.

This application provides a semiconductor device and a method for manufacturing the same. The method includes: providing a substrate; forming an oxide layer on the substrate; pre-cleaning the oxide layer to saturate the silanol groups on the surface of the oxide layer, forming a silanol-saturated oxide layer; and depositing an amorphous silicon layer on the silanol-saturated oxide layer. This application solves the problem of the amorphous silicon film thickness increasing with substrate placement time by pre-cleaning the oxide layer after its formation to saturate the silanol groups on its surface. Under silanol-saturated conditions, the thickness of the deposited amorphous silicon film is more stable, thus facilitating the management of subsequent process steps.

A fluidic hemostat agent comprising a solid hemostatic additive suspended in a silanol carrier fluid to form a heterogeneous mixture that exhibits sufficient flowability to allow for injection and proliferation, while simultaneously having sufficient adhesive and viscoelastic characteristics to remain at the application site and enable the clotting cascade time to form a thrombus. The silanol carrier fluid preferably comprises liquid silanol-bearing POSS molecules, while the solid hemostatic additive preferably is selected from the group consisting of kaolin, chitin, chitosan, cellulose, keratin pectin, acetylated glucosamine, dry fibrin, gelatin, and calcium salts. A preferred silanol species is iso-octylPOSS trisilanol having the molecular representation [(i-ocylSiO1.5)4(i-octyl(OH)SiO1.0)3]Σ7.

The invention relates to a diblock polymer of formula A-B in which the symbol A represents a polystyrene block, the symbol B represents a statistical copolymer block of ethylene and a branched 1,3-diene of formula CH2=CR'-CH=CH2, the symbol R' representing a hydrocarbon chain having 3 to 20 carbon atoms, the diblock polymer bearing at the chain end a functional group containing a silanol or alkoxysilane function, the styrene units of the block A being present in the diblock in a molar content of less than 15% of the repeating units constituting the diblock polymer, and the diblock polymer having a Mooney viscosity ML (1+4) at 100°C greater than 30. The invention also relates to a method for synthesizing a polymer of this kind, and to a rubber composition containing same and intended to be used in particular in a tyre.

A room-temperature-curable organopolysiloxane composition comprising (A) an organopolysiloxane resin which contains silanol groups in a specified amount and has a specified molecular weight and a specified three-dimensional net-like structure, (B) a hydrolyzable organosilane compound containing an organooxymethyl group and / or a partial hydrolysis-condensation product thereof, (C) a linear diorganopolysiloxane of which each molecule chain terminal is capped with a silanol group, and (D) a hydrolyzable organosilane containing an amino group and / or a partial hydrolysis-condensation product thereof at specified content ratios can be produced easily and at low cost, and can be formed into a high-hardness cured article or coating film even when a metal compound that can serve as a condensation catalyst is not contained.

The objective is to provide a surface treatment liquid used to ensure adhesion between two substances through interfacial molecular bonding, and to provide a composition liquid capable of forming a bond with excellent moisture resistance, or a bond with excellent moisture and heat resistance, and to provide a method for manufacturing metal-coated resins or resin laminates by plating or bonding using the composition liquid. [Solution] The composition liquid comprises a polymer, a thermopolymerizable compound, and an azide compound, wherein the polymer comprises a first repeating unit having a primary or secondary amino group, a second repeating unit having an allyl group, and a third repeating unit having a hydrophobic functional group other than an allyl group. Preferably, the polymer, the thermopolymerizable compound, and the azide compound do not contain ester bonds, and preferably, the polymer and the azide compound do not contain amide bonds. The composition liquid may also contain an organosulfur compound. The polymer may also comprise a polyether block.

The present disclosure provides a surface-treated metal member manufacturing method capable of obtaining excellent corrosion resistance of the surface-treated metal member and suppressing appearance defects. The surface-treated metal member manufacturing method of one embodiment of the present disclosure includes a degreasing water washing step, a surface treatment agent contacting step, and a drying step. A water-based surface treatment agent includes a silicon-containing compound (A) containing no polar functional group other than a silanol group, a water-soluble amino-containing compound (B), and water. The total mass concentration of the silicon-containing compound (A) and the water-soluble amino-containing compound (B) in the water-based surface treatment agent, i.e., the mass concentration of (A+B), is in the range of 1 to 30 g / L. The ratio {A / (A+B)} of the mass concentration of the silicon-containing compound (A) to the total mass concentration (A+B) of the silicon-containing compound (A) and the water-soluble amino-containing compound (B) in the water-based surface treatment agent is in the range of 45 to 95%.

The application discloses the technical field of organic silicon material, and relates to a high-temperature-resistant organic silicon polymer and a preparation method and application thereof. The high-temperature-resistant organic silicon polymer is formed by a ladder-shaped polysiloxane and a linear polysiloxane. The ladder-shaped polysiloxane is dehydrated and condensed and ring-closed with a double functional silanol group on one side end of the ladder-shaped polysiloxane and an alkenyl boronic acid, and is further chain-extended by a silicon hydrogen addition reaction with a linear polysiloxane with a terminal hydrogen group, so that a ladder-linear block structure organic silicon polymer bridged by a borate group is finally obtained. The block organic silicon polymer contains the ladder-shaped molecule which is heat-resistant in nature, and the borate bridging group can further strengthen the heat-resistant property of the material. The block organic silicon polymer disclosed by the application has a heat-resistant temperature (according to the weight loss of 1.0% when initial decomposition) of 435 DEG C. The preparation method of the high-temperature-resistant organic silicon polymer is simple in process, simple in equipment, and easy in raw material acquisition, and is suitable for large-scale industrial production. The prepared organic silicon material is a thermoplastic polymer, has good film-forming property, can be hot-pressed into a film, and has a wide application prospect as a high-temperature-resistant elastic film material.

This invention relates to the field of daily chemical technology, and in particular to a composition that nourishes, refines, and enhances skin radiance, its preparation method, and its application. The composition comprises, by weight percentage: 30%–80% of inulin root juice fermentation product; 0.1%–1% of palmitoyl pentapeptide-4; 0.1%–1.2% of nonapeptide-1; and the balance α-glucan oligosaccharide A. This invention, by introducing α-glucan oligosaccharide into the fermentation process of inulin root juice and controlling the pH and fermentation conditions at the fermentation endpoint, makes the fermentation process more stable and controllable. The resulting fermentation product has a significantly increased content of low-molecular-weight active substances, with the molecular weight distribution concentrated in a lower range, thus enhancing its transdermal absorption performance. Simultaneously, the fermentation product synergistically interacts with dimethylsilanol hyaluronic acid ester, β-glucan, and polysaccharide components from the extract of *Opuntia ficus-indica* stem to form a uniform and dense hydrated film on the skin surface and increase the interfacial refractive index, thereby enhancing skin radiance and improving smoothness.

This invention relates to a textile composite finishing liquid and its preparation method, as well as Janus textiles with a gradient structure and their preparation method, belonging to the field of functional textile technology. The preparation method of the composite finishing liquid includes: obtaining component A by reacting raw materials containing a first hydroxyl-terminated polydimethylsiloxane, a second hydroxyl-terminated polydimethylsiloxane, and a crosslinking agent; reacting a two-dimensional material dispersion with a thermosensitive polymer to obtain a two-dimensional material grafted with the thermosensitive polymer; assembling the two-dimensional material grafted with the thermosensitive polymer into a monolayer film, and then grafting a hydrophobic silanol onto the other surface of the monolayer film to obtain thermosensitive nanosheets; mixing the thermosensitive nanosheets with an organic solvent to obtain component B; and mixing component A and component B to obtain the composite finishing liquid. Janus textiles prepared using this composite finishing liquid exhibit excellent wash durability, unidirectional moisture wicking, contact angle, and temperature responsiveness.

A method for preparing an organosilicon compound having at least one silicon-bonded carbinol group and / or at least one silanol group, having a cytochrome P450 variant that promotes oxidation of a silicon-bonded hydrocarbyl group in the presence of an oxidizing agent. The method comprises: combining a cytochrome P450 variant, an initial organosilicon compound having at least one silicon-bonded hydrocarbyl group, and a cofactor to obtain a reaction mixture; and exposing the reaction mixture to an oxidizing agent to oxidize the silicon-bonded hydrocarbyl group of the initial organosilicon compound, thereby preparing an organosilicon compound having at least one silicon-bonded carbinol group and / or at least one silanol group. Cytochrome P450 variants suitable for use in this method are also disclosed, along with methods for manipulating and optimizing them. Nucleic acids and compositions encoding cytochrome P450 variants, expression vectors, and host cells containing them are also disclosed.

A polysilsesquioxane liquid precursor includes a copolymer of a trifunctional silicon alkoxide and a difunctional silicon alkoxide, and residual silanol group fraction fSiOH in the copolymer is 0.02 to 0.3. A method for producing a polysilsesquioxane liquid precursor includes subjecting a trifunctional silicon alkoxide and a difunctional silicon alkoxide to a hydrolysis reaction and a polycondensation reaction in an aqueous solution without using an organic solvent in the presence of an acid catalyst, with aging during the hydrolysis reaction and the polycondensation reaction.

The application discloses a kind of moisture and heat resistant antibacterial outdoor functional fabric and preparation method thereof, it is related to textile fabric technical field.The application is prepared by basalt melt to obtain non-woven fabric film layer, the upper and lower layers of fiber film are compounded with polymer protective film by laser technology, and functional fabric is prepared, wherein the penetration of laser to matrix and the forming ability of composite interface are enhanced by non-woven fabric structure, so as to realize the optimization effect of moisture and heat resistance and antibacterial property, and in the laser composite process, water vapor and rare earth salt steam are passed in, wherein water vapor is used as reaction medium, promotes the chemical bonding of silanol on the surface of basalt fiber and polymer protective layer, at the same time, the heat conduction of water vapor can reduce the local temperature of laser processing, cooperates with rare earth salt steam, can optimize the structure of interface layer, improves the long-acting property of fabric moisture and heat resistance and antibacterial property, finally carries out tempering treatment, further enhances the moisture and heat resistance of fabric.

This invention belongs to the field of semiconductor materials and functional devices, and discloses a multi-site interface modification material, its preparation method, and its application. The multi-site interface modification material has a donor-acceptor-multi-site modification structure, with phosphate, sulfonic acid, boric acid, carboxyl, silanol, and thiol as anchoring groups, and amino and functional aryl / heteroaryl groups connected by alkyl chains, possessing interface passivation, carrier transport, crystal-induced growth, and patterned confinement functions. The preparation method involves multiple steps of coupling, acylation, reduction, and deprotection to obtain the target product, with a simple process and easy purification. This material can be applied to organic / quantum dot / perovskite light-emitting diodes, solar cells, and detectors, effectively passivating defects, improving thin film quality and device performance, and is suitable for large-area industrial fabrication.

The application belongs to the technical field of sealant and specifically relates to high-strength mold-resistant MS sealant and a preparation method thereof. The MS sealant comprises, in terms of weight parts, 100-120 parts of mold-resistant agent grafted MS prepolymer, 80-100 parts of active nano calcium carbonate, 5-15 parts of fumed silica, 2-4 parts of water-removing agent, 1-3 parts of coupling agent and 0.1-0.5 parts of chelated tin catalyst. The mold-resistant agent grafted MS prepolymer is a polyether prepolymer with both ends of silanol terminated, and a side chain grafted with isothiazolinone mold-resistant groups through a maleimide-thiol click chemical reaction. The mold-resistant agent is permanently anchored to the polymer main chain through a chemical bond, so that the problem of mold-resistant agent migration and loss is solved. The introduction of maleimide glycidyl ether monomers improves the rigidity of the polyether molecular chain segment, so that the sealant has long-term mold-resistant performance and high tensile strength, and can be widely applied to fields with high requirements for mold resistance and mechanical properties.