173 results about "Cyclic ether" patented technology

The invention relates to the technical field of lithium battery electrolytes, in particular to a preparation method of a polyether-based solid electrolyte and application of the polyether-based solid electrolyte in electrochemical devices such as lithium metal batteries. The polyether-based solid electrolyte material comprises a porous polymer skeleton, a cyclic ether monomer, a copper-based compound, a lithium salt and a plasticizing additive. The preparation method comprises the following steps: loading a copper-based compound into a porous polymer skeleton, adding cyclic ether, lithium salt and the like to carry out in-situ ring opening polymerization, cooperatively constructing a polyether-porous polymer skeleton three-dimensional network structure, and improving the mechanical strength of the electrolyte. Wherein the copper-based compound widens the chain spacing of the porous polymer, and is convenient for the cyclic ether monomer to penetrate into the skeleton; meanwhile, the in-situ ring-opening polymerization of the cyclic ether promotes the close contact between the electrolyte and an electrode, the interface impedance is reduced, and the ionic conductivity is improved. The polyether-based solid electrolyte prepared by the invention can promote stable circulation of a lithium metal battery.

The invention provides an electrolyte suitable for a lithium negative electrode or a negative-electrode-free lithium battery, a lithium metal battery and a negative-electrode-free battery. The electrolyte comprises a solvent, a diluent and fluorine-containing lithium salt, wherein the solvent is selected from one or more of a linear ether solvent, a cyclic ether solvent and a siloxane solvent, and the linear ether solvent, the cyclic ether solvent and the siloxane solvent optionally have cyano substituent groups; the diluent is selected from one or more of a group consisting of fluoro aromatic hydrocarbon and fluoro alkane. The specific solvent and diluent are used, and the additive is further used, so that the electrochemical stability window and the capacity retention ratio and the lithium deposition efficiency of the battery are remarkably improved.

The invention provides a gel electrolyte with a controllable polymerization degree, a preparation method of the gel electrolyte, a semi-solid lithium ion secondary battery and a preparation method of the semi-solid lithium ion secondary battery, and relates to the technical field of lithium ion batteries. Raw materials for preparing the gel electrolyte comprise a cyclic ether monomer, an initiator and a polymerization inhibitor; the cyclic ether monomer is subjected to ring opening polymerization to obtain an ether polymer; the polymerization inhibitor is an inorganic lithium salt, and the polymerization degree of the gel electrolyte is determined by the dosage of the polymerization inhibitor and the dosage of the initiator. The gel electrolyte provided by the invention has the fluidity advantage of a liquid electrolyte and the flexibility advantage of a solid polymer electrolyte, and is beneficial to maintaining a stable contact interface between the electrolyte and an electrode, reducing interface impedance and improving ion transmission.

The invention discloses a preparation method of an in-situ self-generated diaphragm type dual-network polymer electrolyte and a battery, and belongs to the technical field of lithium batteries. A staged in-situ polymerization strategy is adopted and comprises the following steps: firstly, applying a precursor solution containing an acrylate monomer, a polythiol cross-linking agent, a cyclic ether monomer, an initiator and a lithium salt to the surface of an electrode, partially polymerizing the solution under first initiation conditions such as transient ultraviolet irradiation and the like, and generating a layer of semi-solid gel diaphragm on the surface of the electrode in situ; then, an electrode with the gel diaphragm and a counter electrode are safely assembled into a battery; and finally, under second initiation conditions such as room temperature curing and the like, integrally curing and forming the dual-network polymer electrolyte in the battery. According to the method disclosed by the invention, physical isolation is realized by ingeniously utilizing the intermediate-state gel diaphragm, and the prepared electrolyte has high ionic conductivity, high mechanical strength and excellent interface stability, so that the assembled diaphragm-free solid-state lithium battery shows ultra-long cycle life.

The present invention provides a processing solution for semiconductor devices that excels in suppressing defects, a method for processing substrates, and a method for manufacturing semiconductor devices. [Solution] The present invention provides a processing solution for semiconductor devices, a method for processing substrates, and a method for manufacturing semiconductor devices, all of which contain a quaternary ammonium hydroxide compound, a cyclic ether compound, and an alkyl ketone, wherein the total content of the cyclic ether compound and the alkyl ketone is 0.001 ppm or more and less than 5 ppm.

The application discloses a synthesis method of a chiral cyclic ether, the chiral cyclic ether and application of the chiral cyclic ether. The synthesis method comprises the following steps: reacting a compound shown in a structural formula I with hydrogen in the presence of a catalyst to obtain the chiral cyclic ether shown in a structural formula II. The synthesis method is simple in a reaction system, easy to operate and high in economic benefits.

The application discloses a conjugated polymer material capable of realizing neutral state green / black-transparent electrochromic performance and a preparation method and application thereof. The conjugated polymer material (IV) is prepared through copolymerization of a cyclic ether modified p-dibromobenzene ring monomer (I), a thiophene derivative ProDOT monomer (II) and a D-A-D unit ProDOT-BTD-ProDOT coupling monomer (III). The electrochromic polymer thin film processed from the conjugated polymer material has application prospects in the fields of intelligent windows, intelligent glasses, displays, electronic paper and the like. In the material, the cyclic ether modified p-dibromobenzene ring monomer effectively reduces the oxidation potential of the conjugated polymer, improves the electrochromic performance of the black / green-transparent electrochromic thin film, and realizes stable and reversible conversion.

The invention relates to a method for producing polyacetal resin. Provided is a method for producing a polyacetal resin with which it is possible to stably and continuously produce a polyacetal resin over a long period of time while suppressing the generation of a tar-like precipitate caused by a polymerization catalyst. A method for producing a polyacetal resin, characterized by comprising a polymerization step in which a polymerization reaction is carried out using (a) a cyclic ether and / or a cyclic formal containing at least trioxymethylene, (b) boron trifluoride or a boron trifluoride complex, and (c) an organic solvent. And the organic solvent (c) is a compound represented by a predetermined formula (1).

The invention relates to a method for producing polyacetal. In a method for producing polyacetal using a cationic active catalyst, the cationic active catalyst is efficiently deactivated and washed, thereby producing polyacetal having excellent thermal stability. A method for producing a polyacetal, characterized by comprising: a polymerization step for polymerizing at least one cyclic ether and / or cyclic formal containing trioxymethylene in the presence of at least one cationic active catalyst; and a deactivating and washing step in which the crude polyacetal obtained in the polymerization step is brought into contact with a deactivating and washing solution obtained by dissolving or suspending a basic compound in an aliphatic hydrocarbon solvent, thereby deactivating and washing the cationic active catalyst in the same step.

This invention provides a UV-curable coating composition, its preparation method, and its application. The UV-curable coating composition of this invention comprises the following components in parts by weight: 40-60 parts of silicone-modified polyurethane acrylate, 5-30 parts of cyclic ether acrylate or its derivatives, 2-10 parts of silane coupling agent, 30-80 parts of filler, and 0.5-5 parts of photoinitiator; wherein the reaction raw materials for the silicone-modified polyurethane acrylate include the following components in parts by weight: 15-30 parts of isocyanate, 20-100 parts of hydroxyl-terminated polydimethylsiloxane, 20-100 parts of aromatic polyester polyol, and 3-15 parts of end-capping agent. By using hydroxyl-terminated polydimethylsiloxane to modify the polyurethane acrylate, and simultaneously adding cyclic ether acrylate or its derivatives as diluent monomers to the coating composition, the resulting coating exhibits high resistance to damp heat, high strength, and high elasticity.

This invention discloses a method for preparing polyethylene cyclohexanedicarboxylate (PECCHD) from waste PET. Specifically, it relates to a solvent composition for dissolving PET, characterized in that the solvent composition comprises a first solvent and a second solvent; the first solvent is a haloalcohol solvent or a cyclic ether solvent; the second solvent is one or more of a cyclic ether solvent, a chain ether solvent, a nitrile solvent, a ketone solvent, or a haloalkane solvent; the chain ether solvent is a chain ether solvent with 2-4 oxygen atoms; the volume ratio of the first solvent to the second solvent is 1:(1-5); the first solvent and the second solvent are not the same solvent. This method has significant advantages in terms of raw material adaptability, reaction efficiency, and industrialization potential, achieving a highly efficient conversion from low-end waste PET to high-value-added PECHD.

The application belongs to the technical field of secondary batteries, and more particularly relates to a low-temperature microemulsion electrolyte, a preparation method and application thereof. The low-temperature microemulsion electrolyte comprises an electrolyte salt, a symmetrical cyclic ether solvent, a highly chlorinated solvent insoluble in the symmetrical cyclic ether solvent, and a chlorinated ether solvent for dispersing the highly chlorinated solvent in the symmetrical cyclic ether solvent in the form of micelles. Through synergistic effect of the components, an electrolyte system with high ion conductivity, electrode interface stability and wide temperature range adaptability is constructed, effectively solving the core problems of kinetic sluggishness, poor interface stability and short cycle life of the secondary battery in an ultra-low temperature environment. The electrolyte remains liquid at -70 DEG C, and exhibits excellent cycle stability in a wide temperature range of -40 DEG C to 25 DEG C, giving the battery excellent wide temperature range adaptability, breaking the low-temperature performance bottleneck of the secondary battery, and having a broad application prospect.

Provided is a method of producing a lithium ion secondary battery, the method including: a charge and discharge treatment step of subjecting a first lithium ion secondary battery including a positive electrode having a positive electrode active material layer containing a sulfur-modified compound, a first liquid electrolyte, and a negative electrode to charge and discharge treatment; and a replacement step of replacing the first liquid electrolyte with a second liquid electrolyte to provide a second lithium ion secondary battery after the charge and discharge treatment step, wherein the first liquid electrolyte contains a solvent selected from the group consisting of: a saturated cyclic carbonate compound; and a saturated chain carbonate compound, and wherein the second liquid electrolyte contains a solvent selected from the group consisting of: a saturated cyclic ether compound; and a saturated chain ether compound.

The invention provides a hard coating liquid and a preparation method thereof, a hard coating film for an HUD dustproof cover and a preparation method of the hard coating film, and belongs to the technical field of vehicle HUD. The hard coating liquid comprises a resin matrix, the resin matrix comprises a swelling monomer, the swelling monomer comprises at least one of an amide group, a cyclic ether oxygen group and bisphenol A, and the mass ratio of the swelling monomer in the resin matrix is 10 wt%-30 wt%. The swelling monomer containing at least one of an amide group, a cyclic ether oxygen group and bisphenol A is selected and added into the hard coating liquid arranged on the surface of the polycarbonate film, and the swelling monomer has the ability to swell polycarbonate, so that after the hard coating liquid is arranged on the surface of the polycarbonate film, the swelling monomer partially permeates into the surface layer of the polycarbonate, and the hardness of the hard coating liquid is improved. And in the subsequent UV curing process, an interpenetrating network is formed between the polycarbonate surface layer and the hard coating surface layer, so that the prepared hard coating has high hardness, abrasion resistance, solvent wiping resistance and relatively high adhesive force under high temperature and high humidity for a long time.

Provided is a resin composition which contributes to the low dielectric loss tangent of a cured product, in particular, a resin composition which contributes to the achievement of a cured product exhibiting a lower dielectric loss tangent even in a high-temperature (100 DEG C) environment. The resin composition contains (A) a cyclic ether compound having a four-membered ring or less, (B) a curing agent, (C) an inorganic filler, and (1D) an aluminum complex, and the component (A) contains (A1) a cyclic ether compound having a cationically polymerizable four-membered ring or less.

To provide a treatment liquid for a semiconductor device which is excellent in corrosion resistance of a cobalt atom-containing layer and a tungsten atom-containing layer and excellent in removability of fluorine-based residues.SOLUTION: A treatment liquid for a semiconductor device contains a fluorine-containing compound, a cyclic ether compound, diaminoalkane, and water.SELECTED DRAWING: None

Provided is a catalyst layer-forming composition capable of forming a catalyst layer in which the occurrence of cracks is suppressed. This composition for forming a catalyst layer contains a fluorine-containing polymer having a unit containing a cyclic ether structure and having an ion exchange group, a catalyst, and a solvent, the solvent containing water and an alcohol, the alcohol containing propanol, the content of water being 50% by mass or more with respect to the total mass of the solvent, and the content of ethanol being 50% by mass or more with respect to the total mass of the solvent. The content of propanol is 50% by mass or more with respect to the total mass of the alcohol.

This invention belongs to the field of polymer-based solid-state battery technology, specifically disclosing a method for preparing a precursor solution and a gel polymer electrolyte, and their applications. The precursor solution includes a liquid monomer and an electrolyte salt dissolved in the liquid monomer, wherein: the monomer is one or more of the following: cyclic ether, cyclic carbonate, acrylamide and acrylamide derivatives containing functional groups, acrylate and acrylate oligomers containing double bonds on one side, acrylonitrile and acrylonitrile derivatives containing functional groups, cyanoacrylate and cyanoacrylate derivatives containing functional groups; the electrolyte salt is a lithium salt, potassium salt, or sodium salt. This invention utilizes electron beam irradiation to initiate the polymerization of the precursor solution inside the battery to prepare a gel polymer electrolyte or polymer-based battery, avoiding the adverse effects of using initiators on battery performance, while effectively improving the contact performance of the electrode-electrolyte interface. This preparation method is simple and efficient, and is conducive to large-scale production.

To provide a plasticizer capable of obtaining a thermoplastic resin composition excellent in flexibility, cold resistance and heat resistance.SOLUTION: The plasticizer contains a (meth) acrylic polymer having a weight average molecular weight of 3,000 or less. The (meth) acrylic polymer includes a structural unit (U1) derived from an alkyl (meth) acrylate and a structural unit (U2) having a cyclic ether group having 3 to 5 ring atoms, and has an SP value of 9.30 or more and a glass-transition temperature of - 75 °C. or less.SELECTED DRAWING: None

To provide a polarizing film having a good appearance even when an optical film is bonded to the easily adhesive layer surface of a polarizer with an easily adhesive layer via an adhesive layer, and at least one resin film selected from the group consisting of polyester resin, (meth)acrylic resin, polystyrene resin, and polycarbonate resin is used as the optical film. [Solution] An optical film is bonded to the easily adhesive layer surface of a polarizer with an easily adhesive layer via an adhesive layer, the optical film being at least one resin film selected from the group consisting of polyester resin, (meth)acrylic resin, polystyrene resin, and polycarbonate resin, the adhesive composition satisfying the condition that the turbidity water absorption rate is 2.8 or higher, and the easily adhesive composition is a polarizing film containing water, a cyclic ether group-containing (meth)acrylamide derivative, and a compound represented by general formula (1).

The invention discloses a linear ether and cyclic ether mixed electrolyte for a wide-temperature-range sodium-ion battery as well as a preparation method and application of the linear ether and cyclic ether mixed electrolyte, and relates to a wide-temperature-range electrolyte as well as a preparation method and application of the wide-temperature-range electrolyte. The invention discloses a linear ether and cyclic ether mixed electrolyte for a wide-temperature-range sodium-ion battery. The linear ether and cyclic ether mixed electrolyte comprises sodium salt and an ether-based solvent, the sodium salt is sodium trifluoromethanesulfonate; the ether-based solvent is a mixed solution of straight-chain ether and cyclic ether; the straight-chain ether is diethylene glycol dimethyl ether; the cyclic ether is tetrahydrofuran or dimethyl tetrahydrofuran. The straight-chain ether and cyclic ether mixed electrolyte of the wide-temperature-range sodium-ion battery provided by the invention has a low freezing point, low viscosity, high ionic conductivity and high sodium ion transference number in a wide temperature range, and low desolvation energy, and can reduce the interface charge transfer impedance of an electrode-electrolyte, so that the performance of the battery is improved. Sodium ions can be quickly embedded and separated when reaching the electrode, so that the wide-temperature-range performance of the sodium ion battery is improved, and the sodium ion battery has excellent wide-temperature-range charge-discharge specific capacity, cycling stability and high-rate performance.

Provided is an adhesive composition capable of forming an adhesive layer having high adhesiveness to an adherend after being cured.　A curable adhesive composition according to the present invention includes: an adhesive polymer; a polyfunctional cyclic ether compound having two or more cyclic ether groups per molecule; and an acid generator. The amount of the polyfunctional cyclic ether compound is 10-100 parts by mass relative to 100 parts by mass of the total amount of the adhesive polymer. The adhesive polymer preferably includes an acrylic polymer. The acrylic polymer preferably includes 0.5-10 mass% of a constituent unit derived from a carboxy group-containing monomer.

The present application relates to self-assembled block copolymers containing cyclic cross-linkable groups and self-correcting directed self-assembly methods. The self-assembled block copolymers contain cyclic cross-linkable groups selected from one or more of the group consisting of fused saturated alicyclic aryl, cyclic amine aryl, cyclic ether, and saturated alicyclic aryl. The self-correcting directed self-assembly methods include a first directed self-assembly using a first self-assembled block copolymer, which is the self-assembled block copolymer containing cyclic cross-linkable groups described above, and cross-linking to obtain a first nanostructure, and using the first nanostructure to direct a second self-assembly of a second block copolymer to obtain a second nanostructure. The self-correcting directed self-assembly methods using the self-assembled block copolymers containing cyclic cross-linkable groups of the present application substantially reduce pattern defects and reduce line edge roughness and line width roughness.

The application discloses a method for preparing S-alkyl isothiourea under visible light irradiation, and a structural formula of the S-alkyl isothiourea is shown in formula 1. The preparation method comprises the following steps: adding secondary amine, aryl isothiocyanate, aryl alpha-diazo ester and cyclic ether as reaction raw materials into a reactor, adding an organic solvent, and stirring and reacting at room temperature under visible light irradiation for 3 hours. After the reaction is completed, the reactants are concentrated under reduced pressure, and the target product S-alkyl isothiourea is obtained through column chromatography separation. According to the application, secondary amine, aryl isothiocyanate, aryl alpha-diazo ester and cyclic ether are reacted under the promotion of visible light, and a series of S-alkyl isothiourea is efficiently synthesized in one-step operation. The process of the application is completed at room temperature under the condition that no heating and any metal catalyst, base, ligand and other additives are needed, and clean visible light energy is used as a reaction energy source. The process of the application has the advantages of simple operation, mild reaction condition, high efficiency, low energy consumption, high safety and small pollution.

To provide a thermosetting resin composition which is thermoset by irradiation with microwaves in a short time, and can bond much precise / small-sized members having low heat resistance once, and a method for manufacturing a composite structure which is composed of a precise / small-sized member using the thermosetting resin composition.SOLUTION: (1) A thermosetting resin composition for microwave irradiation contains a cyclic ether compound and a polymerization initiator, wherein the polymerization initiator is a thermal cationic polymerization initiator, and one or more members selected from the group consisting of a circuit connection member, an electronic / electric member, an optical member, a construction member, and an automobile member are bonded between the members or to other member under irradiation with microwaves. (2) A thermosetting resin composition for microwave irradiation contains a cyclic ether compound and a polymerization initiator, wherein the polymerization initiator is an iodonium-based photocationic polymerization initiator and a radical polymerization initiator.SELECTED DRAWING: None

The invention provides a locally high-concentration in-situ polymerization gel electrolyte and an application thereof in a lithium metal battery, belongs to the technical field of lithium batteries, and aims to solve the technical problems of narrow voltage window and poor cycling stability of a polyether-based electrolyte. The in-situ polymerization gel electrolyte is obtained through in-situ polymerization reaction of a precursor solution, wherein the precursor solution comprises the following raw materials: cyclic ether polymeric monomers, an epoxy ether fluorinated derivative diluent, a plasticizer, an additive, an initiator and a lithium salt; wherein the epoxy ether fluorinated derivative diluent is a fluorinated derivative in which substituent groups on carbon atoms of epoxy ether are hydrogen, fluoro, polyfluoroalkyl or perfluoroalkyl, and at least one substituent group is perfluoroalkyl. The gel electrolyte is wide in voltage window and good in cycling stability. Meanwhile, after the diluent is added, a polymerization precursor is low in viscosity, relatively good in wettability and simple in preparation process.

The invention discloses a method for producing bio-based dihydric alcohol. According to the method, bio-based methyl 2-tetrahydrofuroate, tetrahydrofurfuryl propionate and methyl 2-(tetrahydrofuran-2-yl) acetate are used as precursors for dihydric alcohol synthesis, Cu-Ga-Mn / SiO2 or Cu-Ga-Mn / SiO2-Al2O3 is used as a hydrogenation catalyst, cyclic ether ester structures are synchronously activated in a fixed bed reactor, ester group hydrogenation and tetrahydrofuran ring opening are synergistically carried out, and the high-purity tetrahydrofuran is obtained. The reaction path is shortened. The hydrogenation catalyst is prepared by combining a sol-gel method and hydrothermal synthesis through roasting and reduction, active components are uniformly distributed, and the hydrogenation catalyst has excellent hydrogenation activity and structural stability.

A catalyst for producing an alkyl-group-containing unsaturated cyclic ether, the catalyst being used for producing an alkyl-group-containing unsaturated cyclic ether (2) from an unsaturated cyclic ether (1) that has a formyl group or a hydroxymethyl group, and the catalyst containing ruthenium and at least either one of tin or platinum. A method for producing an alkyl-group-containing unsaturated cyclic ether, the method including a reaction step for carrying out a hydrogenation and deoxygenation reaction, in the presence of the aforementioned catalyst, on an unsaturated cyclic ether (1) that has a formyl group or a hydroxymethyl group to obtain an alkyl-group-containing unsaturated cyclic ether (2).

The invention provides an aqueous cleansing composition comprising: A) one or more types of polyglycerin fatty acid esters derived from fatty acids with 8 to 10 carbon atoms and having an HLB value of 10 to 15, B) a cyclic ether or a polyglycerin ester having a dicarboxylic acid with 14 to 28 carbon atoms, C) an anionic surfactant, and D) water, wherein the component B is not polyglycerin fatty acid esters.

The application provides a composite polymer solid electrolyte membrane and a preparation method and application thereof, wherein lithium salt, a cyclic ether compound and a non-ether polymer soluble in or insoluble in the cyclic ether compound are mixed, a polymerizable system is uniformly coated on one side or both sides of a porous membrane through a method such as drop coating, blade coating, spray coating, gravure coating and the like, the non-ether polymer soluble in or insoluble in the cyclic ether compound in the mixture is intercepted on one side of the porous membrane, part of the lithium salt and the cyclic ether compound penetrate into the inside of the porous membrane and the other side under the action of gravity and capillary force, and a polymer electrolyte layer different from the inside of the porous membrane is formed on both sides of the porous membrane through ring-opening polymerization, so that the composite polymer solid electrolyte membrane is obtained.