93 results about "Silylation" patented technology

A substrate processing method according to the present invention incudes: a preparation step of preparing a substrate in which at least a first surface containing silicon oxide and a second surface containing silicon or a silicon compound other than silicon oxide are exposed; a surface modification step of forming an etching selectivity imparting film on at least a part of the first surface and at least a part of the second surface by a silylation treatment of bringing a silylating agent into contact with the first surface and the second surface; and an etching step of selectively carrying out an etching treatment on the second surface with respect to the first surface using an etching agent after the surface modification step.

The application relates to a chiral NSiN ligand based on a phenyloxazoline skeleton, a preparation method and application thereof, wherein the chiral NSiN ligand is prepared from a chiral phenyloxazoline bromide with R or S configuration through lithiation and silylation. The chiral NSiN ligand can be used in transition metal catalyzed asymmetric synthesis, and is used in catalyzing an allylic sulfonylation reaction with a cobalt catalyst, and shows high reaction activity and high stereoselectivity.

The present invention provides a curable resin composition containing a vinyl polymer having a reactive silyl group, which exhibits excellent weather resistance and good extensibility. [Solution] A curable resin composition comprising a vinyl polymer (A), wherein the vinyl polymer (A) has a main chain having repeating units of polymerizable vinyl monomers and reactive silyl groups bonded to the vinyl polymer main chain via a urethane structure, and the vinyl polymer (A) is a polymer obtained by silylation of the plurality of hydroxyl groups of a vinyl polymer (a) having a plurality of hydroxyl groups and a weight-average molecular weight / hydroxyl value of more than 4,000.

To provide a curable composition from which a cured product having good tensile strength and excellent tear strength is obtained, a cured product of the curable composition, and a method for producing the cured composition.SOLUTION: A curable composition comprising a polymer A and a polymer B, wherein the polymer A has two or more terminal groups in one molecule, and the terminal groups do not have a divalent organic group represented by - C (= O) NH - and have at least one group selected from the group consisting of a reactive silicon group, an unsaturated group, and a hydroxyl group, the polymer A is an oxyalkylene polymer having a silylation ratio of 85 to 100 mol%, and the polymer B is an oxyalkylene polymer having two or more terminal groups per molecule, the terminal groups each having at least one group selected from the group consisting of a reactive silicon group, an unsaturated group, and a hydroxy group, the average total number of reactive silicon groups, unsaturated groups, and hydroxy groups per terminal group being more than 1.0, and the silylation ratio of the polymer B being smaller than the silylation ratio of the polymer A.SELECTED DRAWING: None

To provide a curable composition which gives a cured product having good tensile strength and is excellent in curing rate, a cured product of the curable composition, and a method for producing the cured composition.SOLUTION: A curable composition comprising a polymer A and a polymer B, wherein the polymer A is an oxyalkylene polymer having two or more terminal groups in one molecule, the terminal groups not having a divalent organic group represented by - C (= O) NH - and having at least one group selected from the group consisting of a reactive silicon group, an unsaturated group, and a hydroxyl group, and having a silylation ratio of 85 to 100 mol%, the terminal group is an oxyalkylene polymer that does not have a divalent organic group represented by -C (= O) NH -, has at least one group selected from the group consisting of a reactive silicon group, an unsaturated group, and a hydroxyl group, and has a silylation ratio smaller than a silylation ratio of the polymer A.SELECTED DRAWING: None

A process for preparing powdered silylated cellulose is disclosed. The method includes preparing a reaction product in the form of a powder that can be mixed and processed with conventional powder processing equipment.

The invention relates to the technical field of cosmetics, and particularly discloses a lip cosmetic with a form conversion function and a preparation method thereof. The invention relates to a form conversion lip cosmetic, which is prepared from the following raw materials in parts by weight: 15 to 30 parts of functional powder A, 10 to 20 parts of functional powder B, 7.5 to 15 parts of coordination aid, 10 to 20 parts of vinyl polydimethylsiloxane / polymethylsiloxane silsesquioxane cross-linked polymer, 2.5 to 5 parts of boron nitride, 21.5 to 43 parts of colorant, 2.5 to 5 parts of emulsifier and phytosterol oleate amp, the skin care product is prepared from the following components in parts by weight: 2.5-5 parts of phytosterols, 17.5-35 parts of a humectant, 30-60 parts of a solvent, 6.5-13 parts of a skin conditioner and 20-40 parts of a film-forming agent, the functional powder A is composed of mica, perlite and silica; the functional powder B is prepared from polymethylsilsesquioxane and a polymethyl methacrylate cross-linked polymer; the coordination auxiliary agent is prepared from silica silylate and octyl polymethylsiloxane. When the form conversion lip cosmetic is applied, all the components can be uniformly mixed in the process of converting powder into cream, and then a better cream forming effect is shown.

The invention discloses a method for analyzing a polymeric lignin structural unit in watermelon peel, and belongs to the technical field of biological substance composition determination methods, the method comprises the following steps: S1, protective pretreatment: mixing a watermelon peel sample with a protective solution containing triphenylmethyl mercaptan; s2, thioacidolysis: adding a reaction solution containing boron trifluoride and ethanethiol, and heating for depolymerization; s3, in-situ neutralization and derivatization: adding a buffer solution, extracting and drying to obtain an organic phase, and then adding a silanization reagent for derivatization reaction; s4, qualitative and quantitative analysis; through the multi-level design of structure protection, efficient derivation and system integration, the established analysis method shows remarkable advantages in the aspects of inhibiting condensation reaction, improving operation safety, shortening analysis period and realizing quantification, effectively overcomes the technical bottlenecks of low recovery rate, high toxicity, long time consumption, incomplete detection and the like in the prior art, and has wide application prospects. And an excellent technical scheme is provided for composition analysis of the plant polymerized lignin.

The invention relates to a two-component composition comprising at least one first composition comprising a silylated polymer and a second composition, wherein one of the first and second compositions comprises at least one filler comprising a hydroxide salt, and the other of the first and second compositions comprises at least one acid. The invention also relates to the use of such a two-component composition as an adhesive and / or mastic in a battery, and to a method for crosslinking a two-component composition of this kind.

A cosmetic composition for coloring keratin fibers includes a moisture-curable silicone resin formed from reaction of a silylated polyethyleneimine, an acid or a base, and at least one hydrolyzable silane having formula R1nSiR24-n, wherein R1 is alkyl, aryl, fluoroalkyl, trialkylsilyl, triarylsilyl, vinyl, or combination thereof; R2 is alkoxy, aryloxy, acetoxy, oximino, enoxy, α-hydroxycarboxylic acid amide (—OCR2CONR2), α-hydroxycarboxylic acid ester (—OCR2COOR), H, halogen, or combination thereof; n=0, 1, 2, or 3; R is alkyl or H. A coloring agent can be added to the moisture-curable silicone resin and the composition is applied to keratin fiber. A kit for coloring a keratin fiber contains a first container containing the moisture-curable silicone resin; and a second container containing coloring agent. The first container and the second container are mixed prior to application to the keratin fiber.

The invention provides a binuclear cobalt carbonyl complex coordinated with 4, 5-bis (diphenylphosphine-9, 9-dimethyl xanthene (xantphos), a preparation method of the binuclear cobalt carbonyl complex and application of the binuclear cobalt carbonyl complex in an alkyne hydrogen silicification reaction. Specifically, the invention provides a 4, 5-bis (diphenylphosphine-9, 9-dimethyl xanthene coordinated binuclear cobalt carbonyl complex with a structure as shown in a formula I which is described in the specification. The complex can efficiently and highly selectively catalyze the anti-Markov hydrosilicification reaction of alkyne under certain conditions, and alkenyl silicon compounds with various purposes are obtained.

The invention discloses a photo-thermal dual-curing organic silicon composition for adhesive film packaging as well as a preparation method and application of the photo-thermal dual-curing organic silicon composition. Relates to the technical field of LED packaging. The raw materials of the organic silicon composition comprise the following components: vinyl-terminated methacryloyloxypropyl phenyl polysiloxane; a hydrogen-containing phenyl polysiloxane; a photocatalyst; a hydrosilylation catalyst; the vinyl-terminated methacryloyloxypropyl phenyl polysiloxane is phenyl polysiloxane containing a silicon vinyl bond, and the vinyl-terminated methacryloyloxypropyl phenyl polysiloxane is phenyl polysiloxane containing a silicon vinyl bond; the hydrogen-containing phenyl polysiloxane is phenyl polysiloxane containing a silicon hydrogen group bond. Vinyl-terminated phenyl polysiloxane with methacryloyloxypropyl is used as dual-curing base resin, hydrogen-containing phenyl polysiloxane is used as a cross-linking agent for a hydrosilylation reaction, and meanwhile, a free radical photocatalyst and a hydrosilylation catalyst are added, so that the controllable and multi-stage curing photo-thermal curing organic silicon composition is prepared.

There is a need for a novel curable organopolysiloxane composition, etc. A curable organopolysiloxane composition comprising: (A) 100 parts by mass of a chain organopolysiloxane having a viscosity of 1,000,000 mPa·s or more at 25°C or having plasticity at 25°C and having an alkenyl group having 2 to 12 carbon atoms; (B) 5 to 80 parts by mass of a chain organopolysiloxane not having an alkenyl group having a viscosity of 500,000 mPa·s or more at 25°C or having plasticity at 25°C; (C) 0.1 to 20 parts by mass of a chain organopolysiloxane not having an alkenyl group having a viscosity of less than 500,000 mPa·s at 25°C; (D) an organohydrogenated polysiloxane having two or more silicon-bonded hydrogen atoms (Si-H) in one molecule; and (E) a hydrogenation silylation reaction catalyst.

The present application relates to a crosslinkable composition comprising: - a polymer P comprising at least one polymer P1 comprising at least one functional group of the following formula (I): -SiR3-pXp (I) said polymer P1 comprising a main chain based on (meth)acrylate; - a polyurethane P' comprising at least one functional group of formula (II): -SiR''3-tX't (II) - carbon black having an oil absorption number (OAN) of at least 80 mL / 100g.

A vegan anhydrous semi-solid composition may be provided, that includes at least 30% by weight of an organic solvent, a rheology modifier system, 5-15% by weight of waxes, and a particulate. The rheology modify system includes disteardimonium hectorite and silica silylate, where there is a ratio R1 of a percent by weight of disteardimonium hectorite to silica silylate that is 2.1≤R1≤6. The waxes include a hard wax and a soft wax. The particulate includes a pigment, a pearlescent agent, a filler, or a combination thereof.

The present invention discloses a method for preparing alkynylsilanes catalyzed by manganese. The method is as follows: under the protection of an inert gas, a tridentate nitrogen ligand (I), a manganese salt and a reaction solvent are mixed. After stirring and mixing evenly, alkyne (II), an activator and silane (III) are added, and the reaction is carried out at 80-140 °C for 6-14 h. Then, the reaction solution is post-treated to obtain the product alkynylsilane (IV). The present invention uses a manganese salt as a catalyst precursor, and a novel benzimidazole pyridine imine compound as a ligand and a manganese metal precursor as a catalyst to carry out the dehydrogenative silylation coupling reaction of alkynes and silanes in a "one-pot" method. Compared with the existing methods, this method has the advantages of simple operation, mild reaction conditions, wide scope of reaction substrates, high selectivity and high efficiency, and has great practical application value in synthesis.

The present application relates to the field of cefoperazone acid, and discloses a preparation method of cefoperazone impurity A, which comprises the following steps: (1) performing acyl chloride treatment on oxypiperazine acid in the presence of an acyl chloride reagent to generate an acyl chloride compound of oxypiperazine acid; (2) performing silylation treatment on 7-aminocephalosporanic acid in the presence of a silylation reagent to generate a silylated compound of 7-aminocephalosporanic acid; (3) reacting the acyl chloride compound of oxypiperazine acid with the silylated compound of 7-aminocephalosporanic acid to generate an intermediate compound (I); (4) hydrolyzing the intermediate compound (I) under the action of penicillin acylase to generate an intermediate compound (II); and (5) performing esterification and cyclization reaction on the intermediate compound (II) in the presence of a first crystallization solvent, a first organic solvent and a cyclization reagent to obtain the cefoperazone impurity A. The method disclosed by the present application is simple in process, and can obtain the cefoperazone impurity A with high purity, which can be used as a control sample for cefoperazone detection.

A process for preparing a vinyl-functional chlorosilane is performed by dehydrogenative silylation of a hydridochlorosilane and ethylene, both in the gas phase, in the presence of the heterogeneous rhenium catalyst. The process can be used to prepare vinyldimethylchlorosilane at ambient pressure.

The invention relates to a method for the preparation of isocyanates. Here it is provided that(i) a first organosilicon compound having at least one silicon atom Si1 and a unit of formula G-I bound theretois converted to a third organosilicon compound having a unit of formula G-IIby silylation of the NH group of the unit of formula G-I with a second organosilicon compound having one silicon atom Si2; and(ii) the third organosilicon compound is reacted to an isocyanate by thermolysis, whereby the unit of formula G-II is converted to an isocyanate group.

The invention relates to a process for preparing acid-free hydrosiloxane equilibrates. A mixture is contacted with a macrocrosslinked water-containing cation exchange resin that contains sulfonic acid groups and left to react with rearrangement of the SiOSi bonds until the acid-free hydrosiloxane equilibrate produced in this way, in a metal-catalysed hydrosilylating addition onto at least one unsaturated polyether affords an addition product that is clear at T=25° C. The rearrangement of the SiOSi bonds is implemented in the temperature range from 10 to 50° C. The cation exchange resin is characterized in that the product P of the specific surface area thereof and the average pore diameter thereof is P≥2.2×10−3 m3 / kg and the specific surface area A is ≥35 m2 / g, and in that it additionally has a water.

A process for preparing silylated cellulose is disclosed. The method includes preparing a reaction product in the form of a paste and removing unreacted starting materials and / or by-products from the paste to form powdered silylated cellulose.

Method for carrying out a reaction I, wherein a raw material comprising methanol and / or dimethyl ether and toluene is contacted in a reactor with a catalyst obtained in an in-situ and in-line process to produce light olefins with a co-product of paroxylol, where reaction I is intended to produce light olefins from methanol and / or dimethyl ether and toluene with the co-product paroxylol, wherein a material stream I is brought into contact with the catalyst in the reaction system to obtain a material stream II, and C4 olefin or C 5+ Chain hydrocarbons are separated from material stream II, and the light olefins and paraxylene separated from material stream II and returned to the reaction system are used as products. the material stream I contains methanol and / or dimethyl ether and toluene, wherein the reaction system comprises: a first reaction zone containing a catalyst A; and a second reaction zone containing a catalyst B; and wherein catalyst A is an HZSM-5 molecular sieve catalyst modified by a phosphorus reagent and a silylation reagent, wherein the specific preparation steps are as follows: (A1) A mixture of the phosphorus reagent, the silylation reagent and toluene is fed into the first reaction zone with the HZSM-5 molecular sieve at a temperature in the range of 130°C to 500°C; (A2) The temperature is increased to over 500°C and the mixture is calcined in an air atmosphere for a period of 1 hour to 6 hours to obtain catalyst A, wherein catalyst B is an HZSM-5 molecular sieve catalyst modified by a silylation reagent, the specific preparation steps being as follows: (B1) A mixture of the silylation reagent and methanol is fed into the second reaction zone with the HZSM-5 molecular sieve at a temperature in the range of 120°C to 250°C; (B2) The temperature is increased to over 500°C and the mixture is calcined in an air atmosphere for a period of time ranging from 1 hour to 6 hours to obtain catalyst B.

The invention belongs to the technical field of silicone rubber, and particularly relates to low-hardness oil-leakage-free addition type liquid silicone rubber as well as a preparation method and application thereof. According to the low-hardness oil-leakage-free addition type liquid silicone rubber provided by the invention, polydimethylsiloxane with double-end methyl side chain vinyl is introduced into a formula to replace part of alpha, omega-vinyl polydimethylsiloxane, and a vinyl active group of the polydimethylsiloxane with the double-end methyl side chain vinyl is positioned on a side chain; vinyl active groups are adjusted to side chains from the molecular chain tail ends of siloxane chains, the vinyl active groups are surrounded by the surrounding siloxane chains, the steric hindrance is large, only a small amount of vinyl active groups can be smoothly subjected to hydrosilylation reaction, and the hydrosilylation effect is good. The prepared addition type liquid silicone rubber has dual properties of low hardness and no oil leakage, so that the technical problem that the existing low-hardness addition type liquid silicone rubber is easy to leak oil is solved.

Disclosed is a method for preparing an organosilicon compound, which is carried out by subjecting ethylene to selective silylation. The method comprises reacting (A) a hydrosilane chloride compound and (B) ethylene in the presence of a catalyst (C) to carry out silylation, thereby preparing the organosilicon compound. The silylation can be selectively carried out as dehydrogenative coupling to prepare the organosilicon compound as a vinylchlorosilane compound, or as hydrosilylation to prepare the organosilicon compound as an ethylchlorosilane compound. The catalyst (C) contains a Ru(0) complex and can be recycled for subsequent silylation reactions without purification. Also disclosed is the organosilicon compound prepared according to the method.

The present invention belongs to the technical field of DNA synthesis. Provided is a method for synthesizing an N2-C6 amino-modified deoxyguanosine monomer. The synthesis method comprises: performing a silylation protection reaction on deoxyguanosine under the protection of a silanization reagent so as to obtain a first intermediate; performing a Mitsunobu reaction on a second reaction raw material to obtain a second intermediate; performing a nucleophilic substitution reaction on the first intermediate and the second intermediate to obtain a third intermediate; and performing a desilylation protection reaction and a protective group introduction reaction, followed by an activation coupling reaction to obtain a final product. In the synthesis method, the final product is prepared by performing the silylation protection reaction, the Mitsunobu reaction, the nucleophilic substitution reaction, the protective group introduction reaction and the activation coupling reaction on the raw materials. The synthesis method has the advantages of the chemical raw materials used being simple and readily available, and being low cost; having mild reaction conditions, and easy to scale-up production; high stability of the intermediate obtained; and being a simple purification method and easily operated.

The present inventors found that peptide compounds / amide compounds in which the protecting groups of interest are removed and / or which are removed from resins for solid-phase synthesis can be produced without main chain damage by contacting starting peptide compounds / amide compounds with silylating agents.

The present invention provides a silane coupling agent composition, etc., which can produce a rubber composition having excellent scorch resistance and a cross-linked product of a rubber composition having excellent viscoelastic properties. The silane coupling agent composition of the present invention comprises a silane compound, a protein modifier, and / or a silylation reaction accelerator, wherein the silane compound comprises a first silane compound represented by the following formula (1) and a second silane compound represented by the following formula (11).

A method for preparing silylated cellulose is disclosed. The method includes preparing a reaction product in the form of a paste and removing unreacted starting materials and / or by-products from the paste to form a powdered silylated cellulose.

The surface treatment method of the semiconductor substrate of the present invention is a treatment method for treating a main surface of a semiconductor substrate having a pattern formation region in which a pattern is formed on the main surface of the substrate and a bevel region formed on the periphery of the pattern formation region, the pattern having a concavo-convex structure with a pattern size of 30 nm or less, the method comprising a surface treatment step of bringing a surface treatment agent composition containing a silylating agent into contact with the pattern formation region and the bevel region of the main surface of the semiconductor substrate, the surface of the silicon dioxide substrate treated by bringing the surface treatment agent composition into contact having an IPA receding angle of 3° or more at room temperature of 25 degrees and / or a water receding angle of 40° or more at room temperature of 25 degrees.

A substrate processing method according to the present invention includes: a preparation step of preparing a substrate that has, on a surface thereof, a first surface which contains Si and a second surface which has a different chemical composition from the first surface and which contains Si; a surface modification step of carrying out a silylation treatment of bringing a silylating agent into contact with the first surface and the second surface and then carrying out a water repellency adjustment treatment of selectively decreasing water repellency of the second surface with respect to the first surface; and a processing step of selectively carrying out a processing treatment with respect to the second surface after the surface modification step.