261 results about "Epoxide Compound" patented technology

The invention belongs to the technical field of flame-retardant polyether polyol, and particularly relates to a preparation method and application of multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol. The preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol comprises the following steps: taking phosphorus-containing polyether polyol and a nitrogen-containing compound as composite initiators, and carrying out polymerization reaction on the phosphorus-containing polyether polyol and the nitrogen-containing compound and an epoxy compound under the self-catalysis action to obtain the reaction type anti-dripping flame-retardant polyether polyol. According to the preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol provided by the invention, phosphorus, nitrogen and chlorine elements are embedded into the polyether polyol by constructing a ternary synergistic system, so that the problems of poor compatibility, migration and precipitation of an externally added flame-retardant system are solved; in the preparation process, low-cost bio-based phytic acid is adopted as a raw material, no catalyst needs to be introduced, the operation is simple, the prepared polyether polyol is used for preparing a waterborne polyurethane film, the flame-retardant characteristic of the material is improved, and meanwhile, the good anti-dripping characteristic is achieved.

The invention is applicable to the technical field of polymer biomedical hydrogel materials, and provides a preparation method and application of multifunctional agarose-based particle composite hydrogel based on liquid-liquid phase separation, and the agarose-based particle composite hydrogel is a product formed by introducing microsphere particles into an agarose hydrogel body matrix; the microsphere particles are formed by a prepolymer and sodium lignin sulfonate through phase separation mediated by a composite behavior based on non-covalent interaction; the prepolymer is obtained by carrying out amine-epoxy reaction on an amino compound and an epoxy compound in water. According to the prepared agarose-based particle composite hydrogel, a microsphere particle structure is formed on the surface of an agarose matrix while positively charged amino groups and sodium lignin sulfonate are introduced, so that the multifunctional agarose-based particle composite hydrogel is prepared.

The invention discloses a preparation method and application of a catalyst based on pyridine ionic liquid, and belongs to the technical field of catalyst preparation. According to the invention, a hydrolysis reaction of a silane coupling agent is utilized to prepare a silicon oxide nanotube containing a pyridine unit, and then a quaternization reaction is carried out to obtain the catalyst based on the pyridine ionic liquid. The catalyst has a high specific surface area and a rich pore channel structure, exposure of active sites and contact of the active sites and reactants are facilitated, and the catalytic rate is increased. Meanwhile, the silicon oxide nanotube contains hydroxyl, and can cooperate with a pyridine ionic liquid site to catalyze a carbon dioxide cycloaddition reaction. The obtained catalyst can catalyze the reaction of carbon dioxide and an epoxy compound to prepare cyclic carbonate under solvent-free and metal-free conditions, and the catalyst is easy to recover and simple in product purification, and has a good application prospect.

The invention discloses a hyperbranched polyether branching agent with an adjustable structure and a preparation method and application thereof.According to the branching agent, 3-butene-1-alcohol serves as an initiator, a hyperbranched skeleton is constructed through anion ring-opening polymerization reaction and diglycidyl ether, then esterification and end capping are conducted through anhydride, and the hyperbranched polyether branching agent with the adjustable structure is obtained. The tail end of the hyperbranched polyether contains vinyl double bonds, and the ester group structure of the hyperbranched polyether can be regulated and controlled. Different diepoxy compounds are selected to control a main chain structure, and different anhydrides are used for regulating and controlling the chemical composition of branched chains, so that accurate design of molecular weight, polarity and number of functional groups of the branching agent is realized. The branching agent has excellent dissolvability in common organic solvents, and solves the problem of poor dissolvability of the traditional polydiene branching agent. When the star-shaped branched butyl rubber is applied to the synthesis of star-shaped branched butyl rubber, the distribution and number of branched points can be accurately regulated and controlled, the weight-average molecular weight and molecular weight distribution index of the rubber are remarkably improved, and the side reaction of gel is avoided.

The invention provides application of a metal ion doped aminated graphene oxide membrane material in catalyzing CO2 to synthesize cyclic carbonate. The metal ion doped aminated graphene oxide membrane material has an acidic catalytic site and an alkaline catalytic site at the same time, and a two-dimensional interlayer channel of the metal ion doped aminated graphene oxide membrane material also has a confinement effect. In the process of catalyzing a CO2 / epoxy compound cycloaddition reaction, epoxy compound molecules entering a two-dimensional interlayer confinement channel of the metal ion doped aminated graphene oxide membrane material are subjected to efficient ring opening under the combined action of organic amine molecules and metal ions and react with CO2; and finally, realizing CO2 high-efficiency (the reaction time is less than or equal to 5 minutes, and the conversion rate of the epoxy compound is 75-100%) synthesis of the cyclic carbonate under the conditions of room temperature and low pressure (greater than 0.1 MPa and less than or equal to 1 MPa).

The invention relates to the technical field of biological materials, in particular to collagen gel for injection, a preparation method of the collagen gel and an injection preparation. The method comprises the following steps: providing recombinant humanized collagen subjected to alkali resistance screening, and mixing the recombinant humanized collagen with a stabilizer to prepare a collagen dispersion liquid, which comprises the following steps: activating a cross-linking agent in an alkaline activating solution to obtain an activated cross-linking agent solution; wherein the cross-linking agent is a diepoxide compound; carrying out cross-linking reaction on the activated cross-linking agent solution and the collagen dispersion liquid to form gel; wherein the mass concentration of the collagen dispersion liquid is 5-10%, and the mass ratio of the cross-linking agent to the collagen is 5-10%; the total weight percentage of the collagen and the cross-linking agent is 5.5 to 10.5 percent. The gel with a stable structure can be effectively formed when the content of the cross-linking agent is within the content range, the residual amount of the cross-linking agent is low, and the storage modulus, the swelling degree and the pushing force of the gel are excellent.

The application discloses an alkali ion type covalent organic framework material and a preparation method and application thereof, wherein 2,4,6-tris(4-formylphenyl)-1,3,5-triazine, 1,4-diisocyanobenzene and 2-aminopyridine are used as building units, a covalent organic framework containing pyrimidine is obtained through a condensation reaction, and then a quaternary ammonium reaction and an ion exchange reaction are sequentially performed to obtain the alkali ion type covalent organic framework.The alkali ion type covalent organic framework material prepared by the application has rich alkali sites, developed pore structures and good chemical stability, exhibits good catalytic performance as a catalyst for one-pot preparation of dimethyl carbonate from CO2, an epoxide compound and methanol, and also shows good cycle stability.

The application relates to the technical field of catalysts, and discloses a limited type iodine-based homogeneous immobilized catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and iodine ions, magnesium ions and quaternary ammonium ions loaded on the carrier, wherein the molar ratio of the magnesium ions, the quaternary ammonium ions, the iodine ions and the carrier is 0.01-1:4-15:1-30:1. The limited type iodine-based homogeneous immobilized catalyst disclosed by the application enhances the electrostatic interaction between iodine ions and quaternary ammonium ions through the molecular sieve limiting effect to construct a limited type structure. The catalyst has significantly enhanced CO2 adsorption and activation capacity, can activate an epoxide compound, and accelerates the ring opening of the epoxide compound. In a cycloaddition reaction catalyzed by the catalyst under the conditions of no solvent and no auxiliary agent, the conversion rate of propylene oxide can reach more than 73%, and the propylene carbonate selectivity can reach more than 85%.

The invention discloses a supercapacitor with a high specific surface area and a preparation method thereof, and relates to the technical field of supercapacitors. Comprising the following steps: performing layer-by-layer cladding forming on TC4 alloy powder to obtain a three-dimensional bionic curved surface structure with Gyandroid topology in a three-period minimal curved surface, and forming a randomly distributed microcosmic columnar bulge structure on the surface of the three-dimensional bionic curved surface structure as a metal current collector; polyaniline is continuously deposited to form a film along the three-dimensional bionic curved surface structure and the surface microcosmic columnar protrusion structure of the three-dimensional bionic curved surface structure in a pulse electrodeposition mode, and a TC4-coated PANI electrode is obtained; the preparation method comprises the following steps: preparing a three-dimensional bionic curved surface structure, performing grafting reaction on polyvinyl alcohol and an epoxy compound containing a quaternary ammonium group under an alkaline condition to prepare a PVA-g-TMAC polymer, preparing a PVA-g-TMAC hydrogel electrolyte, injecting the PVA-g-TMAC hydrogel electrolyte into a mold, arranging two TC4-coated PANI electrodes in the mold according to a preset interval, clamping the three-dimensional bionic curved surface structure, and performing freeze thawing and consolidation to obtain the supercapacitor with a sandwich structure.

The present invention uses a two-pack adhesive composition which is constituted from: a first agent containing at least one non-aromatic epoxy compound selected from among an aliphatic epoxy compound having a hydroxyl group and two or more epoxy groups and a cyclohexene oxide-based epoxy compound, an aromatic epoxy compound, rubber particles and an ionic liquid; and a second agent containing at least one curing agent selected from among an amine-based curing agent having two or more amino groups in the molecule, an acid anhydride-based curing agent, a phenol-based curing agent, a mercaptan-based curing agent and a polysulfide-based curing agent, and in which the ratio of the non-aromatic epoxy compound and the aromatic epoxy compound falls within a certain range.

The invention relates to new carbon dioxide (CO2) adsorbents based on modified weak base anion exchange resin (WBAER) sorbents comprising a crosslinked polymeric backbone containing appended primary and / or secondary amines. The WBAER materials are insoluble in water and common organic solvents, have surface areas of 5-50 m2 / g, and can be in either bead or powder form. The WBAER materials are suspended in water and / or polar organic solvents and treated with polyfunctional epoxide compounds to effect the modification. The modified materials exhibit significantly improved oxidative stability compared with the unmodified ion-exchange resins without significantly impacting their CO2 uptake capacity or CO2 uptake kinetics. The modified materials remain insoluble in water and common organic solvents and, therefore, are not susceptible to leaching under steam-based or moisture-based sorbent regeneration conditions.

The present application provides a photosensitive resin composition, a hardened film, a substrate with a hardened film, and a manufacturing method of a substrate with a hardened film, which can form a resin film pattern having excellent development adhesion, linearity, and resistance to solvents and alkalis, even when a substrate with low heat resistance is used. The photosensitive resin composition of the present application is a photosensitive resin composition for forming a hardened film on a substrate with a heat resistance temperature of 111°C or less, and comprises: (A) an alkali-soluble resin containing an unsaturated group, (B) a photopolymerizable monomer having two or more ethylenic unsaturated bonds, (C) an epoxy compound having two or more 3,1-epoxycyclohexyl groups, (D) a photopolymerization initiator, and (E) a solvent. The content of the (C) component is 5 to 17 mass% relative to the total mass of the solid components.

The present application relates to the technical field of cable, in particular to a kind of anti-aging cable and preparation method thereof.The cable includes conductor, crosslinked polyethylene insulation layer, shielding layer and sheath layer from inside to outside.The sheath layer is prepared by soft polyvinyl chloride resin, butyronitrile rubber, silicon dioxide, silane coupling agent and epoxidized branched modified nano titanium dioxide.Epoxidized branched modified nano titanium dioxide is branched modified nano titanium dioxide by using epoxypropanol and epoxide compound containing naphthalene ring structure, and then modified by epoxidation of epichlorohydrin.Epoxidized branched modified nano titanium dioxide significantly improves the anti-UV aging performance of the cable, reduces the yellowing degree under long-term outdoor exposure conditions, so that the cable has longer service life and higher safety and reliability, and is suitable for various outdoor harsh environments.

The application relates to the technical field of CO2 capture, in particular to a CO2 adsorbent and a preparation method and application thereof. The preparation method of the CO2 adsorbent comprises the following steps: impregnating a carrier with an impregnation solution; wherein the impregnation solution comprises an organic amine and an aromatic hydrocarbon polycyclic epoxide compound, the aromatic hydrocarbon polycyclic epoxide compound comprises at least two epoxy functional groups, the aromatic hydrocarbon polycyclic epoxide compound further comprises at least one of benzene rings, biphenyl rings and naphthalene rings, and the carrier has pores; and heating and cross-linking; the organic amine and the aromatic hydrocarbon polycyclic epoxide compound are cross-linked in the pores of the carrier to form a network structure, and the CO2 adsorbent is obtained. The organic amine in the CO2 adsorbent has a network structure, the anti-leaching performance and stability of the network structure organic amine are improved, and the stability of the CO2 adsorbent is enhanced.

This invention belongs to the technical field of concrete crack filling materials, specifically relating to a rapid repair material for concrete cracks, comprising component A and component B. Component A contains liquid bisphenol A epoxy resin, filler, toughening agent, and anti-settling agent; component B includes a curing agent and a diluent. The curing agent is prepared by pre-reacting a polyamine, epoxy compound, and benzyl alcohol, followed by mixing with isocyanate. This invention has found that the synergistic effect of components A and B significantly improves the performance of the rapid repair material for concrete cracks. The research shows that this rapid repair material exhibits rapid strength growth at low temperatures, fast gel time, compressive strength greater than 50 MPa at 2 hours, flexural strength greater than 12 MPa at 24 hours, adhesive strength greater than 3.0 MPa, and the ability to open to traffic after 2 hours, with subsequent slow strength growth.

This invention provides a method for preparing chiral epoxy compounds, chiral β-lactones, and polyhydroxyalkanoates. The method involves three steps: chiral resolution of the epoxy compound, carbonylation of the chiral epoxy compound to prepare a chiral β-lactone, and ring-opening polymerization of the β-lactone. Using this method, polyhydroxyalkanoates with good tensile strength and toughness, as well as a wide processing window, can be prepared. This invention has advantages such as simple steps, low raw material costs, and no need to introduce a second monomer, making it easy to scale up production.

An epoxy resin represented by the following formula (1), in which in a total amount of an epoxy compound represented by n=1 in the epoxy resin of the above formula, a total content of an epoxy compound represented by the following formula (2) and an epoxy compound represented by the following formula (3) is 1 area % or more and less than 70 area % in HPLC area percentage.

The invention discloses a flame-retardant CO2-based polyurethane solid polymer electrolyte and a preparation method thereof, and belongs to the technical field of lithium ion batteries and the technical field of flame-retardant polymer electrolytes. According to the invention, CO2, the epoxy compound, diamine and the functionalized ionic liquid are taken as raw materials, flame-retardant CO2-based polyurethane is synthesized in one step, the flame-retardant CO2-based polyurethane is compounded with the lithium salt to obtain the polyurethane solid electrolyte with flame retardance and conductivity, and the safety of the battery under the condition of thermal runaway is effectively improved. By adjusting the structure and proportion of the raw materials, the processability of the polymer and the interfacial compatibility of the solid electrolyte are improved.

The application discloses a polymer crosslinking system with a siloxane structure for deep profile control. A preparation method of the polymer crosslinking system for deep profile control comprises the following steps: S1, in an inert atmosphere, under the condition that an initiator exists, performing a polymerization reaction on nonionic monomers, anionic monomers and an epoxy monomer in water to obtain an epoxy polymer; S2, in an inert atmosphere, performing a grafting reaction on polyethyleneimine, an epoxy compound-1 and an epoxy compound-2 in an organic solvent to obtain a silicon-containing polymer; and S3, performing a crosslinking reaction on the epoxy polymer and the silicon-containing polymer in water to obtain the polymer crosslinking system. The polymer crosslinking system has certain delayed crosslinking characteristics and excellent temperature resistance and salt resistance.

The invention relates to a waterborne polyurethane emulsion as well as a preparation method and application thereof. The preparation raw materials of the waterborne polyurethane emulsion comprise the following components: an isocyanate monomer, flame-retardant polyether polyol, polydimethylsiloxane, a hydrophilic chain extender and a small molecular alcohol chain extender. The flame-retardant polyether polyol is a polymer formed by [(bis (2-hydroxyethyl) amino) methyl] diethyl phosphate and an epoxy compound. According to the synthesized waterborne polyurethane coating, the synergistic effect of nitrogen, phosphorus and silicon is utilized, flame propagation can be effectively inhibited, the molten drop phenomenon can be remarkably inhibited, and the limit oxygen index and the vertical combustion grade of the material are greatly improved.

The application relates to a device and a method for reducing the acid value of polylactic acid polyol. The device for reducing the acid value of polylactic acid polyol comprises a reaction kettle and a distribution device arranged in the reaction kettle, the distribution device is communicated with a circulating feed port at the top of the reaction kettle and is used for distributing circulating materials, wherein the distribution device comprises a distribution cavity and N wire-wound screen pipes communicated with the side of the distribution cavity, and N>=2. The device can increase the contact area of polylactic acid polyol and an epoxide compound under inert gas conditions, improve the reaction rate, rapidly reduce the acid value of the product, reduce the reaction time of the materials and make the materials be heated more uniformly. In addition, the internal structure of the device is simple and the materials are not easy to be stored.

The application discloses a preparation method of a catalyst based on a pyridine ionic liquid and application thereof, and belongs to the technical field of catalyst preparation. The catalyst based on the pyridine ionic liquid is prepared by utilizing the hydrolysis reaction of a silane coupling agent to obtain silica nanotubes containing a pyridine unit, and then through a quaternary ammonium reaction. The catalyst has a high specific surface area and a rich pore structure, is favorable for exposure of active sites and contact of the active sites with reactants, and improves a catalytic rate. Meanwhile, the silica nanotubes contain hydroxyl groups, can synergistically catalyze a carbon dioxide cycloaddition reaction with pyridine ionic liquid sites, and can catalyze a reaction of carbon dioxide and an epoxide compound to prepare a cyclic carbonate under a solvent-free and metal-free condition. The catalyst is easy to recycle, product purification is simple, and the catalyst has a good application prospect.

Provided are: a negative photosensitive composition which is capable of forming a pattern having a good shape and which is capable of improving adhesiveness to a side wall of a hollow structure; a photosensitive resist film which is provided with a photosensitive film that is formed using the negative photosensitive composition; a method for producing a hollow structure using the negative photosensitive composition; and a method for forming a pattern. The negative photosensitive composition contains a trifunctional or higher polyfunctional epoxy compound, a cationic polymerization initiator, and a bifunctional aromatic epoxy compound having a molecular weight of 800 or less. In the negative photosensitive composition, the ratio of the content of the difunctional aromatic epoxy compound to the total content (100% by mass) of the polyfunctional epoxy compound and the difunctional aromatic epoxy compound is 0.6-10% by mass.

The invention relates to the technical field of hygienic products, in particular to an air-laid glue-free core body for solidifying fluff pulp and SAP (Super Absorbent Polymer) by using superfine melt-blown fibers. The preparation method comprises the following steps: forming fluff pulp fibers into a base material layer through air laying; applying the modified SAP material to the substrate layer; the polymer melt forms melt-blown fibers through a melt-blowing process, and the melt-blown fibers directly deposit and penetrate into the SAP-containing base material layer when the melt-blown fibers have thermal viscosity to form a three-dimensional intertwining structure; and finally, carrying out hot pressing treatment on the structure, and realizing integral solidification under the condition of no additional adhesive by utilizing the thermal viscosity of the melt-blown fibers. The modified SAP material is obtained through pretreatment of an epoxy compound and coating treatment of mixed slurry of nanocrystalline cellulose and a functional additive. The problems that SAP particles in a traditional core body are prone to migration, powder falling and gel blocking are effectively solved through the glue-free solidification technology, and the obtained core body is high in absorption speed, low in back seepage amount, stable in structure and suitable for sanitary products such as paper diapers and sanitary napkins.

This optical waveguide resin composition comprises: an epoxy compound (A); an anthracene-based photosensitizer (B); a first photocationic polymerization initiator (C); and a second photocationic polymerization initiator (D) and / or a benzotriazole-based ultraviolet absorber (E), wherein the first photocationic polymerization initiator (C) has a conjugate acid strength of not less than the strength of HSbF6 and has a first anion part; and the second photocationic polymerization initiator (D) has a conjugate acid strength lower than the strength of HSbF6 and has a second anion part.

The present application relates to epoxy resin diluent, especially to a kind of active epoxy resin diluent and its preparation method and application.The present application first multi-functional epoxy compound and catalyst are added to high-pressure reactor, nitrogen is imported to discharge the air in autoclave, temperature is raised to set temperature and CO2 gas is imported, under certain pressure, reaction is started, after reaction, temperature is reduced, exhaust, filtration is obtained cyclic carbonate compound, i.e.active epoxy resin diluent;The cyclic carbonate compound obtained is mixed with epoxy resin uniformly, then amine curing agent is added, and modified epoxy resin is obtained after curing.The active epoxy diluent prepared in the present application can not only reduce the viscosity of epoxy resin, improve its construction performance, but also improve the comprehensive performance of epoxy resin, play the role of toughening modification.

The invention discloses a TS-1 molecular sieve catalyst, a preparation method and application of the TS-1 molecular sieve catalyst in preparation of an epoxy compound through epoxidation of hydrogen peroxide and alkene, the preparation method comprises the following steps: mixing a template agent with water, and then adding a silicon source to obtain a first solution; mixing a titanium source, soluble vanadium salt and isopropanol to obtain a second solution; stirring and mixing the first solution and the second solution, then adding octadecylamine polyoxyethylene ether biquaternary ammonium salt to obtain a reaction system, and then performing crystallization, separation and heat treatment to obtain the TS-1 molecular sieve catalyst. Through doping of vanadium heteroatoms and adjustment of octadecylamine polyoxyethylene ether biquaternary ammonium salt on a crystallization process, a hierarchical pore system is successfully constructed while high-activity titanium species are retained, and collaborative optimization of a pore structure and active sites is realized. The TS-1 molecular sieve catalyst obtained through optimization shows significantly enhanced catalytic activity and selectivity in an olefin epoxidation reaction system.

Embodiments of the present disclosure generally relate to epoxy resin compositions and uses thereof. The epoxy resin composition includes an epoxy component including a first epoxy compound and a second epoxy compound. The epoxy resin composition includes a curing agent component including a first polyamine compound and a second polyamine compound.

This invention discloses a heterozygous sesquiterpene tricyclic epoxy compound derived from the strain *Arthrum oligosporum*, its preparation method, and its applications, belonging to the field of natural product chemistry. This invention provides a heterozygous sesquiterpene tricyclic epoxy compound derived from *Arthrum oligosporum* (… A.oligospora ) AOL_ s00210g57 Anthrobotrisin D, a novel heterozygous sesquiterpene tricyclic epoxy compound from a gene knockout strain, has been shown in vitro to possess excellent anti-inflammatory activity, significantly inhibiting lipopolysaccharide-induced inflammatory responses in mouse microglia. It exhibits a clear dose-dependent inhibitory trend at multiple levels, including NO release, protein and mRNA expression of inflammatory factors (TNF-α, IL-1β, IL-6), and iNOS protein and mRNA expression. Furthermore, at a concentration of 33 μM, its anti-inflammatory effect is comparable to that of the clinically proven positive drug dexamethasone, and in some aspects, it is even superior. This invention not only provides a new lead compound for the development of anti-inflammatory drugs but also opens up new directions for developing new drugs from the unique microbial resource of nematode-preying fungi.

This invention discloses a supercapacitor with a high specific surface area and its preparation method, relating to the field of supercapacitor technology. The method includes: performing layer-by-layer cladding forming on TC4 alloy powder to obtain a three-dimensional biomimetic surface structure with a Gyroid topology in a three-period minimal surface; forming randomly distributed microscopic columnar protrusions on the surface of the three-dimensional biomimetic surface structure as a metal current collector; continuously depositing polyaniline along the three-dimensional biomimetic surface structure and its surface microscopic columnar protrusions using pulsed electrodeposition to obtain a TC4@PANI electrode; preparing a PVA-g-TMAC polymer by grafting polyvinyl alcohol with an epoxy compound containing quaternary ammonium groups under alkaline conditions; preparing a PVA-g-TMAC hydrogel electrolyte and injecting it into a mold; arranging two TC4@PANI electrodes at a predetermined interval in the mold and sandwiching the three-dimensional biomimetic surface structure; and obtaining a sandwich-structured supercapacitor through freeze-thaw solidification.