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59 results about "Azocane" patented technology

Azocane is a heterocyclic organic compound with the molecular formula C₇H₁₅N. It consists of a saturated eight-membered ring having seven carbon atoms and one nitrogen atom attached to a single hydrogen atom. The fully unsaturated analog of azocane is azocine.

Polysilazane thermosetting polymers for use in chromatographic systems and applications

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.
Owner:SIGMA ALDRICH CO LLC

Graphene substituted with boron and nitrogen , method of fabricating the same, and transistor having the same

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.
Owner:SAMSUNG ELECTRONICS CO LTD

Preparation method of Si-C-N ceramic 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.
Owner:ZHEJIANG SCI-TECH UNIV

Composition for forming siliceous film and process for producing siliceous film from the same

InactiveUS20090305063A1Small thickness shrinkageHigh-quality trench isolation structureLayered productsPretreated surfacesSilane compoundsWater vapor
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.
Owner:HAYASHI MASANOBU

Alkynyl-containing poly-siloxane and method for preparing same

InactiveCN1629208AImprove thermal stabilityGood photoelectric functionAlkanePolymer science
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.
Owner:INST OF CHEM CHINESE ACAD OF SCI

Film-forming composition and film-forming method using same

[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.
Owner:MERCK PATENT GMBH

Preparation device and preparation method for polysilazane

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.
Owner:福建省博涵能源科技有限公司

Preparation method and application of polysilazane material

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.
Owner:大晶信息化学品(徐州)有限公司

Silver halide photographic emulsion, silver halide photosensitive material, and novel iridium complex and preparation process thereof

InactiveUS6902879B2Hard gradationHigh maximum densityIndium organic compoundsGroup 3/13 element organic compoundsIridiumOxygen
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.
Owner:FUJIFILM HLDG CORP +1

Method for synthesizing novel spinnable polyborazane precursor in one pot

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.
Owner:NAT UNIV OF DEFENSE TECH

Modified polysilazane, coating solution containing said modified polysilazane, and gas barrier film produced using said coating solution

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.
Owner:KONICA MINOLTA INC

SiBCN ceramic aerogel, preparation method and application thereof

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.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Preparation method of vildagliptin

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.
Owner:烟台万润药业有限公司

Double-modified polysilazane, coating based on dual-modified polysilazane and preparation and use methods thereof

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.
Owner:NINGBO BULL ELECTRIC CO LTD

Pharmaceutical packages with coatings comprising polysilazane

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.
Owner:CORNING INC

Method And System for Silosilazanes, Silosiloxanes, And Siloxanes As Additives For Silicon Dominant Anodes

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.
Owner:ENEVATE CORP

SiHfOC ceramic microspheres and preparation method thereof

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.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method for preparing high purity, high density and high yield Si3N4/SiO2 coaxial nano-cable array

The invention relates to a method for preparing Si3N4 / SiO2 coaxial nano-cable array with high purity, high density and high yield by using Si3N4 as an inner core and SiO2 as a housing, belonging to the technical field of material preparation. In the method, pyrolytic organic precursor is adopted to synthesize the Si3N4 / SiO2 coaxial nano-cable array on a substrate plated with metal catalyst. The method comprises: (1) polysilazane with high nitrogen content is crosslinked and cured at the low temperature of 160-300 DEG C, so that semitransparent amorphous SiCN solid can be obtained; (2) after being crosslinked and cured, the amorphous SiCN solid is processed by high energy ball-milling and crushed in a highly abrasion resistant appliance; (3) after high energy ball-milling, the obtained precursor powder is processed by pyrolysis and then evaporatedunder the protection of carrier gas containing a certain amount of oxygen, and then is deposited on the substrate plated with the metal catalyst film, so that the Si3N4 / SiO2 coaxial nano-cable array is obtained. The method has simple synthesis technique and equipment, strong controllability of technological parameters and low cost; the obtained Si3N4 / SiO2 coaxial nano-cables grow orderly, and arehigh in yield, density and purity as well as uniform in diameter distribution. The structure of the synthesized coaxial nano-cables has wide application prospect in the aspects of an atomic force microscope, a near-field optical microscope, nano mechanical probe, novel nano composite material reinforcing agent, etc.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
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