697 results about "Cyclic ether" patented technology

The present invention relates to a process for the production of five-membered or six-membered cyclic ethers, in particular of anhydropolyols, by acid-catalysed cyclodehydration of polyols that contain at least two hydroxyl groups with a spacing enabling ring formation-that is to say, preferably with a spacing of 4 or 5 C atoms. The invention is directed in particular towards the production of anhydrotetritols, anhydropentitols and, particularly preferred, anhydrohexitols, from tetritols, pentitols and hexitols, respectively.

The positive electrode active material of a positive electrode includes a sodium-containing transition metal oxide (Na_aLi_bM_xO_2±α). The M includes at least two of manganese (Mn), iron (Fe), cobalt (Co), and nickel (Ni). For a negative electrode, a sodium metal or a metal that forms an alloy with sodium is used. A non-aqueous electrolyte produced by dissolving an electrolytic salt (sodium salt) in a non-aqueous solvent is used. Examples of the non-aqueous solvent may include a cyclic carbonate, a chain carbonate, esters, cyclic ethers, chain ethers, nitrites, amides and a combination thereof.

To provide a method for easily forming microscopic patterns exceeding the limit of exposure in the patterning technique utilizing the photolithography method in the vacuum deep ultraviolet ray region, a resist pattern swelling material is comprised by mixing a water-soluble or alkali-soluble composition comprising a resin and a cross linking agent and any one of a non-ionic interfacial active agent and an organic solvent selected from a group of the alcohol based, chain or cyclic ester based, ketone based, chain or cyclic ether based organic solvents.

The present invention relates to a novel antireflective coating composition for forming an underlayer for a photoresist comprising an acid generator and a novel siloxane polymer, where the siloxane polymer comprises at least one absorbing chromophore and at least one self-crosslinking functionality of structure (1),

where m is 0 or 1, W and W′ are independently a valence bond or a connecting group linking the cyclic ether to the silicon of the polymer and L is selected from hydrogen, W′ and W, or L and W′ are combined to comprise a cycloaliphatic linking group linking the cyclic ether to the silicon of the polymer. The invention also relates to a process for imaging the photoresist coated over the novel antireflective coating composition and provides good lithographic results. The invention further relates to a novel siloxane polymer, where the siloxane polymer comprises at least one absorbing chromophore and at least one self-crosslinking functionality of structure (1).

The invention belongs to the technical field of lithium ion batteries and particularly relates to electrolyte for a lithium ion battery with a nickel-based cathode. The electrolyte comprises non-aqueous organic solvent, lithium salt, boron-containing lithium salt additive, cyclic ether compound and cyclic phosphonitrile compound. The cyclic phosphonitrile compound is hexaphenoxycyclotriphosphazene or cyclic phosphonitrile derivative. Compared with the prior art, the electrolyte is provided with the boron-containing lithium salt additive capable of improving high temperature performance of the lithium ion secondary battery with nickel-based cathode material, the cyclic phosphonitrile compound, and the cyclic ether compound, and the addition of the cyclic phosphonitrile compound and the cyclic ether compound enables the battery to be fine in high temperature performance, low temperature performance and cycle performance. In addition, the invention discloses the lithium ion battery comprising the electrolyte.

The present invention provides methods, reactor systems, and catalysts for converting in a continuous process biomass to fuels and chemicals. The invention includes methods of converting the water insoluble components of biomass, such as hemicellulose, cellulose and lignin, to volatile C₂₊O_1-2 oxygenates, such as alcohols, ketones, cyclic ethers, esters, carboxylic acids, aldehydes, and mixtures thereof. In certain applications, the volatile C₂₊O_1-2 oxygenates can be collected and used as a final chemical product, or used in downstream processes to produce liquid fuels, chemicals and other products.

Disclosed herein are dual cure compositions, methods to cure dual cure compositions, the dual cure compositions comprising at least one filler, at least one curable monomer comprising at least one of an ethylenic unit or cyclic ether unit or mixture thereof; at least one photoinitiator; and at least one thermal initiator. The method comprises the step of photocuring by exposing the compositions to radiation to at least partially photocure the composition, which in turn generates an exotherm which initiates thermal curing. The methods may be used to make cured thick compositions and sandwich structures. Articles made by the methods are also described.

A sulfide solid electrolyte including a sulfide product prepared by mixing at least Li₂S and P₂S₅ in an organic solvent, wherein the organic solvent includes a tetrahydrofuran compound optionally substituted with a C1-C6 hydrocarbon group or a C1-C6 hydrocarbon group including an ether group, or a C2-C7 non-cyclic ether compound.

A positive electrode has a positive-electrode active material obtained from a mixture of elemental sulfur, a conductive agent and a binder. A negative electrode is composed of a carbon material such as graphite, lithium alloy, or the like that can store lithium and release it. A nonaqueous electrolyte contains a first solvent composed of at least one compound selected from the group consisting of cyclic ethers and chain ethers, and a second solvent composed of a room temperature molten salt having a melting point not higher than 60° C. in a volume ratio in the range of 0.1:99.9 to 40:60, and also contains saturated lithium polysulfide.

The invention discloses an ionic liquid mixed electrolyte for a lithium ion battery. The ionic liquid mixed electrolyte comprises lithium salt, ionic liquid and a non-aqueous organic solvent, wherein the lithium salt is one or mixture of two of lithium bis borate and lithium difluoroborate; cations in the ionic liquid are selected from one of imidazole cations, piperidine cations, pyridine cations, pyrrole cations, quaternary ammonium cations and quaternary phosphine cations; anions in the ionic liquid are selected from one of tetrafluoroborate radicals, hexafluorophate radicals, difluorosulfimide anions and diperfluoroalkylsulfimide anions; and the non-aqueous organic solvent is selected from any one or mixture of several of linear carbonate, cyclic carbonate, linear ether and cyclic ether. The ionic liquid mixed electrolyte is high in thermal stability, wide for an electrochemical stability window, high in conductivity, low in viscosity and good in compatibility with an anode material and a cathode material of the lithium ion battery at the same time.

PURPOSE: To easily obtain the titled alcohol wherein one of both terminals is quantitatively capped, at a low cost, by polymerizing THF in the presence of an active hydrogen-containing compound using a Lewis acid and a cyclic ether as polymerization initiators. CONSTITUTION: A polyether monoalcohol is produced by polymerizing tetrahydrofuran in the presence of a compound containing one active hydrogen atom in one molecule using a Lewis acid and a 3-4-membered cyclic ether. The active hydrogen-containing compound is a compound having hydroxyl group, carboxyl group or thiol group, e.g. methanol, cyclohexanol, etc., and the ether is selected from epoxides or oxetanes.

There are provided various optical materials which contain a curable fluorine-containing polymer (I) having a number average molecular weight of from 500 to 1,000,000 and represented by the formula (1):

MA  (1)

in which the structural unit M is a structural unit derived from a fluorine-containing organic group having crosslinkable cyclic ether structures in its side chain, the structural unit A is a structural unit derived from a monomer copolymerizable with the fluorine-containing ethylenic monomer for the structural unit represented by the formula (M), and the structural unit M and the structural unit A are contained in amounts of from 0.1 to 100% by mole and from 0 to 99.9% by mole, respectively, and further contain a photoacid generator (II). Those optical materials are suitable as materials for optical devices such as an optical waveguide and a sealing member and also as materials for display devices such as an antireflection film and are excellent in transparency in a near infrared region, resistance to moisture, heat resistance, etc. Also there are provided various members obtained by curing the optical materials.

This invention discloses a method for preparing double-metal cyanide complex supported catalyst and its application. The composition is : S-M11a[M(CN)BL1c]íñxM11X2íñy1L2íñy2L3.zH2O, wherein, S is the carrier, and is SiO2, TiO2 or their mixture; M11 is divalent metal ion; M is divalent, trivalent or valency-changeable metal ion; X is halogen anion or analog of halogen anion; L1 is high molecular or low molecular mono-tooth or double-tooth ligand of M; L2 is water-soluble alcohol or cyclic ether; L3 is water-soluble or alcohol-soluble compound, and can be high molecular or low molecular mono-tooth or double-tooth ligand; a and b are positive integers; c is 0 or positive integer; x, y1, y2 and z are 0 or positive numbers. The catalyst is stable in air, and is insensitive to water vapor. The catalyst can be adequately utilized due to supporting, and can be easily removed from reaction products.

A silicon-containing film is formed from a heat curable composition comprising (A) a silicon-containing compound obtained through hydrolytic condensation of a hydrolyzable silicon compound in the presence of an acid catalyst, (B) a hydroxide or organic acid salt of Li, Na, K, Rb or Ce, or a sulfonium, iodonium or ammonium compound, (C) an organic acid, (D) a cyclic ether-substituted alcohol, and (E) an organic solvent. The silicon-containing film ensures effective pattern formation, effective transfer of a photoresist pattern, and accurate processing of a substrate.

An alkali-developable photosensitive resin composition comprises a carboxyl group-containing urethane resin having a biphenyl novolak structure, a photopolymerization initiator, and aluminum hydroxide and/or a phosphorus-containing compound. The composition may be formulated as a photocurable and thermosetting resin composition by further incorporating therein a thermosetting component having a plurality of cyclic ether groups and/or cyclic thioether groups in the molecule, besides the components described above. The photosensitive resin composition may further contain a colorant. By using the photosensitive resin composition or a dry film thereof, a printed wiring board having a flame-retardant cured film, such as a solder resist, formed from the halogen-free composition can be provided while imposing little burden on the environment, the cured film being flame-retardant and reduced in warpage and having various excellent properties including bending characteristics, resistance to soldering heat, and resistance to gold plating.

The present invention provides a hologram recording medium which can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low dimension change (low shrinkage) and high multiplicity in holographic memory record using a blue laser. A hologram recording medium (11) comprising at least a hologram recording material layer, wherein the hologram recording material layer (21) comprises at least: an organometallic compound having at least a Ti—O bond, and a photopolymerizable compound; and said medium has a light transmittance is 50% or more at a wavelength of 405 nm, or a light reflectance is 25% or more at a wavelength of 405 nm. The organometallic compound is favorably obtained by subjecting an alkoxide compound of the corresponding metal(s) to hydrolysis and polymerization reaction in an organic solvent which neither contains cyclic ether skeleton nor carbonyl oxygen.

The invention discloses a drilling fluid and a preparation method thereof. The drilling fluid comprises, by weight, 2.0 to 6.0 parts of bentonite, 0.1 to 1 part of sodium carboxymethylcellulose, 0.2 to 0.8 part of a zwitter-ion sulphonate copolymer, 0.03 to 0.4 part of sodium hydroxide, 0.1 to 0.8 of a polyamine polymer, and 100 parts of water; the polyamine polymer is a polymer of terminal diamine, a cyclic ether, and an epoxy alkyl halide. The preparation method comprises following steps: the polyamine polymer is prepared firstly, wherein the polyamine polymer is prepared via copolymerization of terminal diamine, the cyclic ether, and the epoxy alkyl halide; and then an aqueous solution containing bentonite, sodium carboxymethylcellulose, the zwitter-ion sulphonate copolymer, sodium hydroxide, the polyamine polymer, and water is prepared according to the stoichiometric ratio so as to obtain the drilling fluid. The drilling fluid is excellent in system inhibition performance and collapse resistance, and contains no sylvite, so that subsequent processing on high salt content is unnecessary.

The present invention provides catalysts, methods, and reactor systems for converting oxygenated hydrocarbons to oxygenated compounds. The invention includes methods for producing cyclic ethers, monooxygenates, dioxygenates, ketones, aldehydes, carboxylic acids, and alcohols from oxygenated hydrocarbons, such as carbohydrates, sugars, sugar alcohols, sugar degradation products, and the like, using catalysts containing palladium, molybdenum, tin, and tungsten. The oxygenated compounds produced are useful in the production of liquid fuels, chemicals, and other products.

A copolymer with recurring constituent units derived by polymerizing tetrahydrofuran, ethylene oxide and at least one additional cyclic ether that can be substituted or unsubstituted that decreases the hydrophilicity imparted to the copolymer by the ethylene oxide.

The invention discloses a cationic polyamine polymer, and a preparation method and application thereof. The cationic polyamine polymer contains double main chains, and can form a grid structure. The preparation method uses terminal diamine, cyclic ether and epoxy chloropropane as raw material, and comprises the following steps: while stirring, dropwisely adding cyclic ether into terminal diamine at 60-100 DEG C to react for 1-4 hours to generate a compound of which the structural formula is (II), wherein the mol ratio of the terminal diamine to the dropwisely added cyclic ether is 1:2; heating to 90-150 DEG C, and dropwisely adding epoxy chloropropane while stirring, wherein the mol ratio of the dropwisely added epoxy chloropropane to the terminal diamine is 2:1; after the reaction system becomes thicker, keeping the state for at least half an hour, adding a terminator, and continuing the reaction for 1-4 hours to obtain a cationic polyamine polymer sample, wherein the mol ratio of the terminator to the terminal diamine is 2:1. The cationic polyamine polymer can be used as a drilling fluid shale inhibitor. The cationic polyamine polymer contains abundant hydroxy groups, and has favorable water solubility; the cationic polyamine polymer can effectively inhibit the hydration expansion and dispersion of clay; and the cationic polyamine polymer provides certain lubricating property, and is environment-friendly.