60 results about "Azocane" patented technology

This invention relates to an amorphous non-glassy ceramic composition that may be prepared by curing, calcining and / or pyrolyzing a precursor material comprising silicon, a Group III metal, a Group IVA metal, and / or a Group IVB metal.

Graphene, a method of fabricating the same, and a transistor having the graphene are provided, the graphene includes a structure of carbon (C) atoms partially substituted with boron (B) atoms and nitrogen (N) atoms. The graphene has a band gap. The graphene substituted with boron and nitrogen may be used as a channel of a field effect transistor. The graphene may be formed by performing chemical vapor deposition (CVD) method using borazine or ammonia borane as a boron nitride (B—N) precursor.

The invention discloses a preparation method of a Si-C-N ceramic precursor. The preparation method comprises the following steps of: dissolving silicon-containing chlorosilane in an organic solvent which in immiscible with water, carrying out ammonolysis by virtue of aqueous alkali of a compounding containing -NH-, separating oil phase from water phase, and rotatably evaporating the oil phase at the boiling temperature of the organic solvent, to obtain liquid polysilazane; and putting the liquid polysilazane in a three-opening flask, and in the presence of N2, Ar or vacuum atmosphere, and continuously carrying out curing reaction for 12-72 hours at the temperature of 50-250DEG C, wherein the obtained solid product is the Si-C-N ceramic precursor. According to the preparation method, interfacial polymerization is adopted, so that the influence of byproducts on the purification and yield of polysilazane can be avoided, the reaction working procedures can be simplified, and the reaction time can be shortened; and the reaction process is easy to control, the synthesis yield reaches up to 90%, the product is high in purity, and a pyrolysis product is good in high temperature resistance and oxidation resistance.

A surface treatment process comprises (a) providing at least one substrate having at least one major surface; (b) combining (1) at least one curable oligomeric or polymeric polysilazane comprising at least one chemically reactive site, and (2) at least one fluorochemical compound comprising (i) at least one organofluorine or heteroorganofluorine moiety that comprises at least about six perfluorinated carbon atoms, and (ii) at least one functional group that is capable of reacting with the polysilazane through at least one of the chemically reactive sites; (c) allowing or inducing the polysilazane and the fluorochemical compound to react to form at least one curable organofluorine-modified polysilazane; (d) applying the curable organofluorine-modified polysilazane or its precursors to at least a portion of at least one major surface of the substrate; and (e) curing the curable organofluorine-modified polysilazane to form a surface treatment.

The present invention provides a siliceous film-forming composition having such a small thickness shrinkage ratio that a highly homogeneous siliceous film can be obtained. The invention also provides a trench isolation structure-fabrication process. According to this process, trenches even having very small widths can be homogeneously filled in. The composition contains a solvent and a polysilazane compound obtained by co-ammonolysis of one or a combination of two or more halosilane compounds. The process comprises the steps of coating a surface of a silicon substrate with the above composition, and subjecting the coated substrate to heat-treatment at less than 1000° C. under an oxygen atmosphere or an oxidizing atmosphere containing water vapor, so that the composition is converted into silicon dioxide in the form of a film.

An objective of the present invention is to provide a process for producing a siliceous film which has a uniform quality independently of sites and in both the inside and outside of the grooves and is free from voids and cracks in the inside of the grooves. A substrate with the siliceous film can be produced by forming an insulating film having a high hydrogen content on a surface of a silicon substrate having concavoconvexes, then coating a composition containing a polysilazane compound on the substrate, and heating the coated substrate to convert the polysilazane compound to a silicon dioxide film.

The invention discloses an alkynyl-containing polysiagzane with the structure of [SiR1R2(C=C-SiR1R2)*NH], wherein R1, R2 is C1-C6 alkane, alkene, phenyl or H, n=1-10, m=10-100. The alkynyl-containing polysiagzane is prepared through aminolysis method, thus has good thermally-stability and photoelectric function.

[Problem] To provide a film forming composition and a method for preparing a film with which it is possible to form a film having excellent gas barrier performance.[Means for Solution] Disclosed is a film forming composition comprising: a polysiloxane that does not include a hydroxyl group or a carboxyl group; a polysilazane; and an organic solvent. Also disclosed is a method for preparing a film comprising: coating a substrate with said composition; and exposing the same to light.

The invention relates to a high temperature resistant defoaming agent and application thereof in delay coking, the defoaming agent is prepared by compounding fluorine-containing polysiloxane, hyperbranched polyether, modified nano silica, vinyl-containing polysilazane and a solvent under certain conditions. A preparation method of the defoaming agent is as follows: dispersing required specifications of the fluorine-containing polysiloxane, the hyperbranched polyether and the modified nano silica in the solvent at a constant temperature of 60-100 DEG C, then cooling to room temperature, mixing, simultaneously adding the vinyl-containing polysilazane, and then filtering away non-homogeneous impurities to obtain the defoaming agent finished product. The efficient multi-active-component defoaming agent used in the delay coking process has good defoaming and anti-foaming properties at a high use temperature, also can maintain the high chemical stability, and is not easy to generate low-boiling-point silicon-containing small molecules cyclized compounds, and the adverse influence of the defoaming agent on the subsequent processing process can be avoided.

The invention relates to a preparation device and a preparation method for polysilazane. The preparation method comprises the following steps: inputting a raw material in a raw material storage tank into the inner layer of a double-layer reaction kettle through a raw material gas inlet pipe, cooling ammonia gas in a liquid ammonia storage tank into liquid ammonia, and inputting the liquid ammonia into the inner layer of the reaction kettle; injecting a cooling liquid into the outer layer of the reaction kettle; mixing and stirring the raw material and the liquid ammonia for a synthesis reaction by utilizing a stirring rod in the inner layer of the reaction kettle, and inputting the mixture obtained from the synthesis reaction into the inner layer of a double-layer product separator for product separation from the bottom of the inner layer of the reaction kettle; respectively inputting the by-product and the product which are obtained from the product separation into a by-product storage tank and a product storage tank; inputting ammonium chloride in the by-product storage tank into a hydraulic storage tank for circulating preparation through a pressurization conveying pump. The preparation device and the preparation method have the benefits that the bi-product obtained in the preparation process can be effectively separated from the product, continuous production can be ensured, and the production efficiency can be greatly improved.

The invention relates to the field of polymer materials, in particular to a preparation method and application of a polysilazane material. The method comprises the following specific steps of obtaining a first polysilazane solution by means of a preset synthesis method; diluting the first polysilazane pyridine solution with an organic solvent to obtain a second polysilazane solution; adding an initiator into the second polysilazane pyridine solution and stirring the mixture for a reaction to obtain the polysilazane material. According to the preparation method, the initiator capable of generating free radicals is added into the polysilazane solution, so that a crosslinking reaction among small-molecule polysilazanes is promoted, the reaction conditions are mild, and the molecular weight ofthe polysilazane material is further increased.

A method of forming a film pattern by disposing functional liquid on a substrate includes: forming banks on the substrate; disposing the functional liquid in regions partitioned by the banks; and drying the functional liquid disposed on the substrate. A material for forming the banks contains one of polysilazane, polysilane, and polysiloxane.

Provided are a silver halide photographic emulsion containing a metal complex represented by the following formula (I):Mm[IrCln(L1)k(L2)6-n-k]  (I)wherein, M represents a cation or anion, m represents an integer of 0 to 4, n represents an integer of 3 to 5, k represents an integer of 0 to 3, L1 represents a ligand selected from the group consisting of pyrroles, thiophenes, pyrazoles, isoxazoles, isothiazoles, imidazole, oxazoles, furazanes, heterocycles having at least 3 hetero atoms and ureas, L2 represents an inorganic ligand other than Cl with the proviso that when k represents 0, L2 represents none of F, Br, I, NO, H2O, CO and C2O4; and a metal complex represented by the following formula (IV):Nk′[IrX6-n′Qn′]  (IV)wherein, N represents a counter cation; X represents a halogen ion; Q represents a compound which contains at least three atoms selected from nitrogen and sulfur atoms, and 5 or less carbon atoms, may contain another atom, and exhibits a ratio of (the number of carbon atoms) / (the total number of nitrogen atoms+oxygen atoms+sulfur atoms) of less than 0.5; n′ represents an integer of 1 or 2 and k′ represents the number of counter cations necessary for neutralizing the charge of a complex salt.

The invention discloses a method for synthesizing a novel spinnable polyborazine precursor in one pot, which comprises the following steps: determining the copolymerization ratio x:y of MAB to RAB ina target product, setting the molar ratio of TCB to alkylamine to methylamine according to the copolymerization ratio x:y, and synthesizing MAB and RAB monomers in the ratio x:y by using trichloroborazine as a raw material, thereby obtaining the novel spinnable polyborazine precursor; finally, carrying out polymerization on the MAB monomer and the RAB monomer at the temperature of 140-220 DEG C toobtain the novel spinnable polyborazane precursor. According to the method, two monomers can be prepared in the same container, copolymerization can be achieved without transferring, the method has the advantages of being simple in preparation process and convenient to implement on a large scale, the prepared novel spinnable polyborazane precursor ceramic is high in yield and low in oxygen content, the precursor has excellent spinnability, and the spinning length can reach larger than 1000 m.

The present invention relates to modified polysilazane, a coating solution containing said modified polysilazane, and a gas barrier film produced using said coating solution. The present invention provides a method for producing a gas barrier film having exceptional storage stability, especially storage stability under rigorous conditions (high-temperature, high-humidity conditions). This modified polysilazane has a ratio ((SiH3:(SiH+SiH2)) of SiH3 and the total of SiH and SiH2 of 1:10-30 as measured by 29Si-NMR.

The invention discloses SiBCN ceramic aerogel, a preparation method and application thereof. According to the method, polyborosilazane with a molecular structure simultaneously containing -CH=CH2 bonds and Si-H bonds is taken as a precursor, a precursor gel is obtained through a hydrosilylation reaction, and a SiBCN ceramic aerogel with a developed pore structure is obtained through drying and post-curing treatment and a precursor conversion method. The SiBCN ceramic aerogel prepared by the method is a novel nano porous material, has extremely high porosity and specific surface area, small aperture and low C / Si ratio, and is particularly suitable for being used as a high-temperature-resistant aerogel thermal insulation material to be applied to thermal protection of spacecrafts.

The invention relates to a preparation method of vildagliptin. The preparation method comprises the following steps: (1) adding 1,1,1,3,3,3-hexamethyldisilazane, 3-aminoadamantanol, a catalyst and dichloromethane into a reactor, carrying out heating, carrying out a heat-preserved reaction, and after the reaction is completed, evaporating out 1,1,1,3,3,3-hexamethyldisilazane and the solvent to obtain a silicyl-protected 3-aminoadamantanol crude product; and (2) adding potassium iodide, organic alkali and acetonitrile into the reactor filled with the silicyl-protected 3-aminoadamantanol crude product, carrying out heating, dropwise adding (S)-1-(2-chloroacetyl chloride)pyrrolidine-2-carbonitrile dissolved in acetonitrile, carrying out a reaction for 1-6 h, adding ethanol with a concentrationof 95%, continuing stirring for 0.5-2 h, and successively performing cooling, filtering, desolventizing and recrystallizing after the stirring reaction is finished so as to obtain vildagliptin. The preparation method can significantly reduce the generation of the impurity Ia, improve yield and reduce the cost, and is beneficial for industrial production.

The invention belongs to the technical field of coatings, and relates to a double-modified polysilazane, a coating based on the double-modified polysilazane and preparation and use methods thereof. The preparation method of the double-modified polysilazane provided by the invention comprises the following steps: S1, mixing vinyl perfluoropolyether or vinyl silicone oil with polysilazane, and reacting in the presence of a catalyst to prepare vinyl perfluoropolyether or vinyl silicone oil modified polysilazane; and S2, uniformly mixing the polysilazane modified by vinyl perfluoropolyether or vinyl silicone oil and ethylene glycol monoether carboxylic acid monomers, and reacting to obtain the double-modified polysilazane. The coating based on the prepared double-modified polysilazane has excellent oil resistance and antifouling performance, and oil stains applied to the surface of a workpiece are extremely easy to remove due to the characteristic of not easy to adhere or a small amount of adherency; and meanwhile, the coating layer prepared from the coating based on the double-modified polysilazane has excellent adhesive force, good hardness, wear resistance and the like.

The present disclosure is directed to pharmaceutical packages that include a coating that comprises polysilazane, and methods for the production of such. In one or more embodiments of the present disclosure, a pharmaceutical package may include a glass container comprising a first surface and a second surface opposite the first surface. The first surface may be an outer surface of the glass container. The pharmaceutical package may further include a coating positioned over at least a portion of the first surface of the glass container. The coating may include polysilazane.

A thin film containing boron and a borazine ring structure is formed on a substrate by performing a cycle a predetermined number of times under a condition where the borazine ring structure is preserved in a borazine compound. The cycle includes: supplying a source gas containing boron and a halogen element to the substrate; and supplying a reactive gas including a borazine compound to the substrate.

A method for producing a decorative part which comprises a visible side with a decorative layer and a mounting side with a substrate layer, wherein a polysilazane-containing composition is applied to the visible side of the decorative layer to form a cover layer and is subsequently cured. Also, a decorative part producible by the method.

Systems and methods for silosilazanes, silosiloxanes, and siloxanes as additives for silicon-dominant anodes in a battery that may include a cathode, an electrolyte, and an anode active material. The active material may comprise 50% or more silicon as well as an additive including one or more of: silosilazane, silicon oxycarbides, and polyorganosiloxane. The silosilazane may comprise one or more amine groups, silanols, silyl ethers, sylil chlorides, dialkylamoinosilanes, silyl hydrides, and cyclic azasilanes. The active material may comprise a film with a thickness between 10 and 80 microns. The film may have a conductivity of 1 S / cm or more. The active material may comprise between 50% and 95% silicon. The active material may be held together by a pyrolyzed carbon film. The anode may comprise lithium, sodium, potassium, silicon, and / or mixtures and combinations thereof. The battery may comprise a lithium ion battery. The electrolyte may comprise a liquid, solid, or gel.

Systems and methods for silosilazanes, silosiloxanes, and siloxanes as additives for silicon-dominant anodes in a battery that may include a cathode, an electrolyte, and an anode active material. The active material may comprise 50% or more silicon as well as an additive including one or more of: silosilazane, silicon oxycarbides, and polyorganosiloxane. The silosilazane may comprise one or more amine groups, silanols, silyl ethers, sylil chlorides, dialkylamoinosilanes, silyl hydrides, and cyclic azasilanes. The active material may comprise a film with a thickness between 10 and 80 microns. The film may have a conductivity of 1 S / cm or more. The active material may comprise between 50% and 95% silicon. The active material may be held together by a pyrolyzed carbon film. The anode may comprise lithium, sodium, potassium, silicon, and / or mixtures and combinations thereof. The battery may comprise a lithium ion battery. The electrolyte may comprise a liquid, solid, or gel.

The invention relates to SiHfOC ceramic microspheres and a preparation method thereof.The preparation method comprises the steps that polysilazane, divinyl benzene and OP-10 are dissolved in a proper solvent according to a certain proportion through a solution blending method, then the evenly-mixed solution is transferred into a high-pressure reaction kettle, curing is conducted in a constant-temperature drying oven, and PSN microspheres are obtained; hafnium acetylacetonate, the PSN microspheres and a xylene solution are added into a three-necked flask for a polymerization reaction, then low-temperature crosslinking, cracking and heat treatment are sequentially carried out, and finally the SiHfOC microspheres are prepared. Compared with the prior art, the method has the advantages that the operation is simple, the experimental condition requirement is low, no catalyst is added, the obtained ceramic microspheres are regular in shape, controllable in size and smooth in surface, and the Hf-containing nanocrystals can be uniformly embedded in the surfaces and the interiors of the SiHfOC microspheres. The method is suitable for preparing the ceramic microspheres with various components.