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517 results about "Chlorine atom" patented technology

Chlorine is an atom that has 17 protons and usually either 18 or 20 neutrons in its nucleus and 17 electrons circling around its nucleus.

Superhydrophobic coating composition and coated articles obtained therefrom

A coating composition is provided comprising: (i) a fluorinated polymer comprising (a) structural units having the formula (I):—CR1R2—CFX—  (I)wherein R1 and R2 are each independently an alkyl group, a fluorine atom, a chlorine atom, a hydrogen atom or a trifluoromethyl group, and X is a fluorine atom, a chlorine atom, a hydrogen atom or a trifluoromethyl group, and (b) structural units comprising at least one type of crosslinkable functional group; (ii) a crosslinking agent; and (iii) a plurality of particles functionalized with a functional group, wherein the functional group on the particles is essentially non-reactive with the fluorinated polymer and with the crosslinking agent. Articles comprising a coating composition described in embodiments of the invention are also provided.
Owner:GENERAL ELECTRIC CO

Methods for the preparation of tris-aryl-o-hydroxyphenyl-s-triazines

A process for preparing 2-(2,4-dihydroxyphenyl)-4.6-diaryl-s-triazines in three steps starting with cyanuric chloride is described. Step 1 involves the nucleophilic (basic) displacement of one chlorine atom with a phenolic moiety. Step 2 involves a Friedel-Crafts reaction using a Lewis acid catalyst (preferably aluminum chloride) to replace the remaining two chlorine atoms with aryl groups such as xylyl. Finally, step 3 involves replacing the phenolic moiety with resorcinol using either a Lewis acid or protic acid catalyst or combinations thereof. Some additional processes only peripherally related to the three-step process outlined above are also described for the preparation of various s-triazine compounds. The s-triazines prepared are useful as UV absorbers for the stabilization of organic substrates against the adverse effects of actinic light.
Owner:CIBA SPECIALTY CHEM CORP

Preparation of fluorinated olefins via catalytic dehydrohalogenation of halogenated hydrocarbons

A process for making a fluorinated olefin having the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms, preferably carried out in the presence of a catalyst selected from the group consisting of (i) one or more metal halides, (ii) one or more halogenated metal oxides, (iii) one or more zero-valent metals / metal alloys, (iv) a combination of two or more of the foregoing.
Owner:HONEYWELL INT INC

Polymer type phosphatic fire retardant, preparation method and usage

A fire retardant is a sort of polymer prepared from phenyl, naphthol or alkyl substituted benzene ring chlorine atom and bromine atom with melting temperature of 185-200 deg.C. A method for preparing the polymer is disclosed and the prepared polymer can be used as fire resisting additive for polyester, eurelon, epoxy etc.
Owner:SICHUAN UNIV

Composition and treatment agent

A composition comprising (A) a copolymer which comprises (I) repeating units which are derived from a monomer having a fluoroalkyl group, a carbon-carbon double bond, (II) optional repeating units which are derived from a monomer having at least two urethane or urea bonds and a carbon-carbon double bond, but no fluorine atom, (III) optional repeating units which are derived from a monomer, the homopolymer of which having a glass transition temperature (Tg) of 50° C. or less, (IV) optional repeating units which are derived from a monomer having a hydrophilic group and a carbon-carbon double bond, and (V) optional repeating units which are derived from a monomer having a chlorine atom and a carbon-carbon double bond; and (B) a film-forming auxiliary can impart high water and oil repellency by drying at room temperature (0 to 30° C.) without requiring a heat treatment step.
Owner:DAIKIN IND LTD

Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matter

Inkjet ink contains a pigment, a hydrosoluble solvent, and water, wherein the pigment is represented by the following chemical formula 1 and has a CuKα X-ray diffraction spectrum having a wavelength of 1.541 Å such that no main peak is observed at a Bragg (2θ±0.2°) angle in a range of 2θ of from 28.0° to 29.0°,wherein R represents a hydrogen atom, a methyl group, or a chlorine atom.
Owner:RICOH KK

Polyhaloalkyl ether derivatives as well as liquid crystal compositions and liquid crystal display elements containing them

A compound expressed by the general formula (1):wherein R1 denotes an alkyl group having from 1 to 20 carbon atoms in which one or more methylene groups in said group may be replaced by oxygen atoms or -CH=CH- and one or more hydrogen atoms in said group may be replaced by flourine or chlorine atoms, with the proviso that two or more methylene groups may not be continuously replaced by oxygen atoms,Y1 denotes an alkoxy group having 1 to 5 carbon atoms, in which at least one hydrogen atom is replaced by a fluorine atom and one or more hydrogen atoms may be further replaced by chlorine atoms,Z1, Z2 and Z3 each independently denote a covalent bond, -CH2CH2-, -CH=CH-, -COO- or -CF2)-, with the proviso that at least one of Z1, Z2 and Z3 is -COO- or -CF2O-,rings A1, A2, A3 and A4 each independently denote trans-1,4-cyclohexylene, 3-cyclohexen-1,4-ylene, 3-fluoro-3-cyclohexen-1,4-ylene, pyrimidine-2,5-diyl, 1,3-dioxan-2,5-diyl, trans-1-sila-1,4-cyclohexylene, trans-4-sila-1,4-cyclohexylene, or 1,4-phenylene in which one or more hydrogen atoms may be replaced by fluorine atoms or chlorine atoms,andm and n denote 0 or 1,with the proviso that when Z1, Z2 or Z3 is -CF2O-, then at least two groups selected from rings A1, A2, A3 and A4 directly bonded to -CF2O- are both 1,4-phenylene in which one or more hydrogen atoms may be replaced by fluorine atoms or chlorine atoms, and any of the rings A1, A2 and A3 bonded with the carbon atoms of -CF2O- is 1,4-phenylene in which at least one hydrogen atom is replaced by fluorine or chlorine atoms.
Owner:JNC CORP

Anthrapyridone compounds, water-base magenta ink compositions and method of ink-jet recording

New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excellent in fastness to light, gas, water and so on.
Owner:NIPPON KAYAKU CO LTD

Process for dehydrochlorinating 1,1,1,2-tetrafluoro-2-chloropropane to 2,3,3,3-tetrafluoropropene in the presence of an alkali metal-doped magnesium oxyfluoride catalyst and methods for making the catalyst

A process for making a fluorinated olefin. The process has the step of dehydrochlorinating a hydrochlorofluorocarbon having at least one hydrogen atom and at least one chlorine atom on adjacent carbon atoms in the presence of a catalytically effective amount of a catalyst composition. The catalyst composition is represented by the following: n wt. % MX / M′OyFz, wherein 0<y<1 and 0<z<2 and wherein y+z / 2=1; M is an alkali metal ion selected from the group consisting of Li+, Na+, K+, Rb+, and Cs+; X is a halogen ion selected from the group consisting of F−, Cl−, Br−, and I−, M′ is a bivalent metal ion; wherein n is a weight percentage of about 0.05% to about 50% MX based on the total weight of the MX and M′OyFz, and wherein y and z are the mole fractions of oxygen and fluorine in M′OyFz, respectively. There are also methods for making catalyst compositions.
Owner:HONEYWELL INT INC

Fluorochloro Ionomers

This invention discloses novel fluorochloro ionomers and processes of making them. The first preferred body of invention is perfluorochloro ionomers having (1) equivalent weight between 600 and 1500, preferably between 800 and 1200, and most preferably between 900 and 1100; (2) chlorine content between 8% and 30% by weight. These ionomers are breathable and excellent barrier materials, capable of being processed into thin films or membranes and are well suited for low humidity or high temperature fuel cell applications and for chemical protective covering materials. The second preferred body of invention is partially fluorochloro ionomers having (1) moisture vapor permeability rate >3000 gram H2O / m2 / day (about ½ mil thick film); (2) chlorine content of between 10% and 39% by weight. These ionomers are breathable and excellent barrier materials that can also be processed into thin films or membranes and are suited for some fuel cell applications and more preferably for breathable protective covering applications. The membranes can be monolithic films or multi-layers films, or composite films, or bipolar membranes. These novel fluorochloro ionomers are made by radical copolymerization of at least one fluorochloro monomer and at least one comonomer consisting of at least ionic group or at least one precursor that can be converted to ionic groups such as acid groups or amines or quaternary amine groups. The said fluorochloro monomer containing at least one fluorine and at least one chlorine atom is free radical polymerizable including chlorotrifluoroethylene (CFCl═CF2) and dichlorodifluoroethylene (CFCl═CFCl).
Owner:ZHEJIANG HYPROOF TECH CO LTD

Heteroacene derivative, tetrahaloterphenyl derivative, and processes for producing the same

There are provided a heteroacene derivative having an excellent oxidation resistance and capable of forming a semiconductor active phase by a coating process, and an oxidation-resistant organic semiconductor material using the same, as well as an organic thin film.[Means for Resolution] A heteroacene derivative represented by the formula (1) is obtained by tetrametalation of a tetrahaloterphenyl derivative with a metalation agent and subsequent treatment of the resulting compound with reaction agents:wherein the substituents R1 to R4 are the same or different and each represents a hydrogen atom, a fluorine atom, a chlorine atom, an aryl group having 4 to 30 carbon atoms, an alkyl group having 3 to 20 carbon atoms, or a halogenated alkyl group having 1 to 20 carbon atoms; T1 and T2 are the same or different and each represents sulfur, selenium, tellurium, oxygen, phosphorus, boron, or aluminum; l and m each is an integer of 0 or 1; and rings A and B are the same or different and each has a structure represented by the following formulae (A-1) or (A-2).
Owner:TOSOH CORP

Catalytic system for olefin- olefin alcohol polymerization, olefin-olefin alcohol copolymerization method and polymer

The invention relates to the field of polymers, the invention discloses a catalytic system for olefin- olefin alcohol copolymerization, an olefin-olefin alcohol copolymerization method and a polymer.The catalytic system comprises the following components: (1) a main catalyst which is selected from at least one of the group consisting of metal complexes as shown in formula (I), in the formula (I),R1 and R4 are each selected from a C1-C30 hydrocarbyl group or heterohydrocarbyl group; R2 and R3 are each selected from a hydrogen atom, a chlorine atom, a C1-C20 hydrocarbon group, and the like, and R2 and R3 may be optionally bonded to each other into a ring. M is a Group VIII metal; X is selected from the group consisting of halogen, hydrocarbyl and alkoxy; n is an integer satisfying the valence of the M; 2) a cocatalyst; 3) an olefin; 4) an alkene alcohol; 5) an alkane solvent; and a 6) chain transfer agent; the polymer has a high alcohol content and weight average molecular weight, a narrow molecular weight distribution, and does not contain a carboxylic acid or an alkali metal salt, and the catalyst has better thermal stability and a higher polymerization activity.
Owner:CHINA PETROLEUM & CHEM CORP +1

Silicon-containing fluorochemical surface-treating agent

There is provided a surface treatment agent which comprises a fluoropolymer having repeating units derived from a fluorine-containing monomer of the formula: wherein (a) the fluoropolymer contains a silicon atom, and / or (b) the surface treatment agent contains a fluorine-free polymer which is different from the fluoropolymer and which is a silicon-containing polymer. The surface treatment agent imparts excellent water- and oil-repellency and soil resistance to textiles while retaining the feeling of the textiles, even if the surface treatment agent contains a fluorine-containing acrylate polymer substituted at its α-position by a fluorine atom, a chlorine atom or the like.
Owner:DAIKIN IND LTD

Chromatographic separation material based on copolymerization on silica gel surface and preparation thereof

The invention relates to a silica gel matrix separation material, wherein two or more silane reagents form nonpolar / polar copolymerization stationary phase through the copolymerization on silica gel surface. The structural formula of the nonpolar / polar copolymerization stationary phase is as follows: FORMULA, wherein Silica Gel is silica gel; NP stands for nonpolar group, which is one or more of C1 to C30 normal chain alkyl and phenyl; and P stands for polar group, which is one or more kinds of C1 to C12 normal chain alkyl whose tail end has the functional group such as chlorine atom, bromineatom, cyan, amido, benzenesulfonic acid group, sulfo group, carboxyl, quaternary ammonium group and alcohol group. The bonded phase of the separation material has novel structure, and simultaneously has nonpolar group and polar group, thereby being capable of providing hydrophobic force and polymorphic polar acting force, and greatly improving the selectivity of the inverse and efficient liquid chromatogram. The stationary phase prepared with the preparation method provided by the invention has the advantages of even and stable surface bonding group, large bonding quantity, and the like.
Owner:浙江华谱新创科技有限公司

Anthrapyridone compounds, water-base magenta ink compositions and method of ink-jet recording

New anthrapyridone compounds represented by the general formula (14): {wherein R represents a hydrogen atom, an alkyl group (optionally substituted with mono- or di-alkylamino group), a lower alkyl group (optionally substituted with a hydroxyl group or a cyano group), or a cyclohexyl group; Y represents a chlorine atom, a hydroxyl group, an amino group, mono- or di-alkylamino group (optionally substituted with a sulfonic acid group, a carboxy group, or a hydroxyl group), an aralkyl- or cycloalkyl-amino group, an alkoxy group, a phenoxy group (optionally substituted with a sulfonic acid group, a carboxy group, an acetylamino group, an amino group, or a hydroxyl group), an anilino group (optionally substituted with a sulfonic acid group or a carboxy group), or a naphthylamino group (optionally substituted with a sulfonic acid group); and X represents a bridging group}; or salts thereof and magenta inks containing the same, which have hues and vividness suitable for ink-jet recording and give records excellent in fastness to light, gas, water and so on.
Owner:NIPPON KAYAKU CO LTD

Double base compound based on phosphonitrile and triazine group and preparation method of double base compound

The invention discloses a double base compound based on phosphonitrile and triazine group. A preparation method of the double base compound comprises the following steps: introducing a triazine group into phosphonitrilic chloride trimer with intrinsically flame retardant property, and substituting six chlorine atoms on the side chains; further introducing a compound containing diamido or dyhydroxyl into the side chains of the triazine group, so as to obtain the double base compound based on phosphonitrile and triazine group. The compound is enriched in elements N and P; because the compound simultaneously contains the phosphonitrile and triazine group, the compound can achieve a flame-retardant effect in the combustion process by virtue of gas phase flame retardance and condensed phase mechanisms and has an excellent char-forming effect, and the generated carbon layer has the effects of insulating heat and inhibiting oxygen and achieves the effects of intumescent flame retardants. In addition, the phosphonitrile and triazine group have a synergistic flame retardant effect in the matrix combustion process. Moreover, the compound is high in heat stability, char-forming rate and processability and can be widely applied to flame-retardant modification of various high polymer materials.
Owner:杭州志合新材料有限公司

Preparation method for lamellar porous biocarbon with good adsorption function

The invention provides a preparation method for lamellar porous biocarbon with a good adsorption function. The objective of the invention is to overcome the problems of difficulty in degradation, proneness to migration and great harm during treatment of pesticides in water bodies in the prior art. The method comprises the following steps: 1, carrying out cleaning; and 2, uniformly mixing biomass powder with chlorine atom-containing low-melting-point molten salt, then carrying out high-temperature oxygen-limited carbonization, cleaning a calcination product and then successively carrying out grinding and sieving so as to obtain the lamellar porous biocarbon. According to the invention, when 15 mg of the lamellar porous biocarbon prepared in the invention is used for adsorbing 40 mL of an aqueous atrazine solution with an atrazine concentration of 25 to 150 mg / L, the residual amount of atrazine is less than 10% while the residual amount of atrazine in a blank control group of an aqueous atrazine solution is 80%. The preparation method provided by the invention is applicable to preparation of lamellar porous biocarbon.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Polythioetherimide and preparation method thereof

InactiveCN101531758AReduce manufacturing costReduce synthesis reactionFiberAdhesive
The invention relates to polythioetherimide and a preparation method thereof. The method is characterized by comprising the following steps: mono-substituted phthalic anhydride isomer with structural formula II is adopted as a reaction material to react with organic diamine NH2RNH2 with half mol equivalent weight at the temperature of about 100 DEG C to about 350 DEG C to generate binary-substituted phthalimide; then binary-substituted phthalimide and sulfur with about equimolar equivalent weight are subjected to coupling polymerization reaction at the temperature of about 60 DEG C to about 260 DEG C under the existence of reducing agent, catalyst and reaction auxiliary agent to generate polythioetherimide resin with structural formula I; and the molecular weight of the resin can be adjusted by end capping agent. The preparation method can greatly reduce the preparation cost and reaction steps, the whole process is more reasonable and practical, and the obtained resin has superior comprehensive properties such as good heat resistance, mechanical properties, melting processing property and the like, can be widely applied in the related fields such as high-temperature resistant engineering plastics, films, adhesives, enameled wires, foamed plastics, fiber, advanced composite materials and the like; in the structural formula II, A substituent is chlorine atom or nitro at 3-bit or 4-bit; and in the structural formula I, R is substituted or unsubstituted organic group.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1

1,3,5-triazine derivative, production method thereof and organic electroluminescence device comprising this as a composing component

Since the conventional electron transporters have low thermal stability, the organic electroluminescent devices using them are not sufficient in terms of the compatibility of their luminance and luminous efficiency with device lifetime.A 1,3,5-triazine derivative of formula (1) is obtained by a metal catalyst-aided coupling reaction of a compound of formula (2) with a compound of formula (3), and this is used as a composing component of an organic electroluminescent device.[In the formulae, Ar1 and Ar2 represent phenyl group or the like, R1 and R2 represent hydrogen atom or the like, R3 represents methyl or the like, m is an integer of 0 to 2, X represents 2,4-pyridylene or the like, p is 1 or 2, a and b are 1 or 2, a+b is 3, q is 0 or an integer of p or less, M represents —MgR4 group or the like, R4 represents chlorine atom or the like, r is p-q, and Y represents a leaving group.]
Owner:TOSOH CORP +1

Anthrapyridone compound, salt thereof, magenta ink composition and colored product

The present invention relates to a novel anthrapyridone compound represented by the following formula (1) or a salt thereof, and can provide a magenta coloring matter having a highly vivid hue suitable for inkjet recording, a high fastness to recorded matters, and an excellent storage stability;wherein R1 represents a benzyl group wherein the phenyl group of the benzyl group may be further substituted by a methyl group, a chlorine atom or a nitro group, 1-naphthylmethyl group or the like, and R2 represents a hydrogen atom, an alkyl group or the like, respectively.
Owner:NIPPON KAYAKU CO LTD

Diamino compounds, polyamic acids, polyimides, liquid crystal aligning films using said polyimide films and liquid crystal display devices using said aligning films

This invention relates to a diamino compound represented by the formula [1]:in which G1 is a trivalent organic group of 2-20 carbon atoms, G2 is independently a single bond, -COO-, -OCO-, -NHCO-, -CONH-, -O-, -O-, or -CO-, G3 is a single bond or an alkylene group of 1-20 carbon atoms, X and Y are each independently a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, or an alkyl group, a haloalkyl group, an alkoxy group or a haloalkoxy group, each alkyl or alkoxy group having 1-12 carbon atoms, or a cycloalkyl group of 3-8 carbon atoms or a trans-4-alkylcyclohexyl group of 9-14 carbon atoms, and m is an integer of 0-3; a polyamic acid and polyimide using the said diamino compound, an aligning film using the said polyimide and a liquid crystal display device using the said aligning film. The aligning film is prepared by irradiation of a polarized ultraviolet light to the polyimide film.
Owner:JNC CORP

1,3,5-triazine derivative, production method thereof and organic electroluminescence device comprising this as a composing component

Since the conventional electron transporters have low thermal stability, the organic electroluminescent devices using them are not sufficient in terms of the compatibility of their luminance and luminous efficiency with device lifetime.A 1,3,5-triazine derivative of formula (1) is obtained by a metal catalyst-aided coupling reaction of a compound of formula (2) with a compound of formula (3), and this is used as a composing component of an organic electroluminescent device.[In the formulae, Ar1 and Ar2 represent phenyl group or the like, R1 and R2 represent hydrogen atom or the like, R3 represents methyl or the like, m is an integer of 0 to 2, X represents 2,4-pyridylene or the like, p is 1 or 2, a and b are 1 or 2, a+b is 3, q is 0 or an integer of p or less, M represents —MgR4 group or the like, R4 represents chlorine atom or the like, r is p-q, and Y represents a leaving group.]
Owner:TOSOH CORP +1

Yellow toner, process for producing the tower and image forming method using the toner

InactiveUS6187495B1Fast processingSuppressed toner deteriorationDevelopersHydrogen atomPhotochemistry
A yellow toner suitable for electrophotography is formed by dispersing a yellow colorant mixture in a binder resin. The yellow colorant mixture is formed of at least a pigment of formula (1) or (2) below, and a dye of formula (3) below: ##STR1## wherein R.sub.1 and R.sub.2 independently denote a hydrogen atom, a chlorine atom or --CH.sub.3, and R.sub.3 denotes ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently denote a hydrogen atom, --COOH, --COOCH.sub.3, --CF.sub.3, --CONH(C.sub.6 H.sub.4)CONH.sub.2, or ##STR3##
Owner:CANON KK

Nonaqueous Electrolyte Secondary Battery

In the non-aqueous electrolyte secondary battery of the present invention, the separator includes a heat-resistant resin having chlorine atoms as an end group and the positive electrode active material includes a lithium-containing complex oxide containing aluminum atoms in its composition. Even if the chlorine atoms are liberated into the non-aqueous electrolyte, aluminum contained in the positive electrode active material is selectively leached into the non-aqueous electrolyte, thereby suppressing the leaching of other component elements. Consequently, there can be obtained a non-aqueous electrolyte secondary battery excellent in safety and high temperature storage characteristics.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Inkjet ink, ink cartridge, inkjet recording device, and inkjet printed matter

Inkjet ink contains a pigment, a hydrosoluble solvent, and water, wherein the pigment is represented by the following chemical formula 1 and has a CuKα X-ray diffraction spectrum having a wavelength of 1.541 Å such that no main peak is observed at a Bragg (2θ±0.2°) angle in a range of 2θ of from 28.0° to 29.0°,wherein R represents a hydrogen atom, a methyl group, or a chlorine atom.
Owner:RICOH KK

Phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane and preparation method thereof

The invention relates to a phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane and a preparation method thereof, and belongs to the technical field of special polymer functional membranes. The preparation method comprises the steps of dissolving polybenzimidazole and hyperbranched polymer poly(p-chloromethyl styrene) in an organic solvent according to a certain ratio; then adding a hyperbranched polymer solution into a polybenzimidazole solution; fully mixing and filtering a mixed solution, and then pouring the mixed solution on a clean glass plate toform a film; and then carrying out drying after soaking in a phosphoric acid solution at a certain temperature for a certain time. The hyperbranched polymer rich in chlorine atoms is used as a cross-linking agent, the cross-linking degree can be adjusted by adjusting the percentage of the branched polymer in an imidazole group, and a three-dimensional net structure is formed in the film forming process; and meanwhile, the residual chlorine atoms in the cross-linking reaction can be converted into functional groups beneficial to proton conduction. The phosphoric-acid-doped cross-linked polybenzimidazole high-temperature proton exchange membrane prepared by the method has excellent mechanical strength and proton conduction capability and can be used for a high-temperature proton exchange membrane fuel cell.
Owner:JILIN UNIV

Method for manufacturing soi substrate

A semiconductor substrate and a base substrate made from an insulator are prepared; an oxide film containing a chlorine atom is formed over the semiconductor substrate; the semiconductor substrate is irradiated with accelerated ions through the oxide film to form an embrittled region at a predetermined depth from a surface of the semiconductor substrate; plasma treatment of the oxide film is performed by applying a bias voltage; a surface of the semiconductor substrate and a surface of the base substrate are disposed opposite to each other to bond a surface of the oxide film and the surface of the base substrate to each other; and heat treatment is performed to cause separation along the embrittled region after bonding the surface of the oxide film and the surface of the base substrate to each other, thereby forming a semiconductor film over the base substrate with the oxide film interposed therebetween.
Owner:SEMICON ENERGY LAB CO LTD

Liquid crystal carbonate and liquid crystal medium containing the same with positive or negative dielectric anisotropy

A novel liquid crystalline carbonate and the mixture containing the same:wherein R3 is an alkyl (H2n+1Cn) or an alkenyl (H2n−1Cn) group, each of 1 to 12 carbon atoms, the ring A is laterally unsubstituted benzene or pyridine or pyrimidine or trans-substituted cyclohexane ring, symbol r is 0 to 2; the lateral substituents: X2, X3, X4 and X5 in the benzene rings represent independently hydrogen or fluorine or chlorine atoms, X1 is hydrogen or fluorine atom and simultaneously at least one of the substituents: X2, X3 and X4 is fluorine or chlorine atoms, Y is an alkyl or an alkyloxy or an alkenyl or an aikenyloxy group, each of 1 to 12 carbon atoms or hydrogen or fluorine or chlorine atom or NCS group are described.
Owner:WOJSKOWA AKAD TECHNI
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