94 results about "Oxazoline" patented technology

The invention relates to an epoxy hardener and a preparation method thereof and a preparation method of a visbreaking uncovering protective film, and the preparation method of the epoxy hardener comprises the following steps: adding 2, 2 '-(1, 3-phenylene)-dioxazoline and a phenolic hydroxyl group or carboxyl group-containing bifunctional monomer into a first solvent, stirring at normal temperature to obtain a first solution, heating to a first temperature, and stirring at normal temperature to obtain a second solution; the first temperature is 155 DEG C to 165 DEG C, and refluxing for 3.5 hours to 4.5 hours; adding a terminated monomer containing carboxyl or phenolic hydroxyl into a reaction system of the first solution, and continuing to carry out reflux reaction for 2.5-3.5 hours at the first temperature; and after the reaction is finished, purifying and drying to obtain the epoxy curing agent. The epoxy curing agent disclosed by the invention has compatibility with low-polarity glue and has a relatively high curing degree in a high-temperature environment; the viscosity-reducing uncovering protective film has the advantages that the viscosity is reduced at high temperature, and the uncovering design efficiency of different types of PCBs is improved.

The invention belongs to the field of photovoltaic technology, and provides a photovoltaic packaging adhesive film, a preparation method and application thereof, and a recovery method of a photovoltaic module. The photovoltaic packaging adhesive film comprises the following raw materials in specific amounts: matrix resin, a low-temperature cross-linking agent, a low-temperature catalyst, a silane coupling agent, an ultraviolet light stabilizer, an organic peroxide initiator, an assistant cross-linking agent and an alcohol compound serving as a reversible dynamic transesterification reaction group, the matrix resin is EVA (ethylene vinyl acetate), POE (polyolefin elastomer) and / or ethylene-butylene copolymer; the low-temperature cross-linking agent is a carboxylic ester type cross-linking agent, a bisoxazoline type cross-linking agent and / or a metal-organic ligand cross-linking agent with the reaction temperature of 150 DEG C or below; the low-temperature catalyst is a polynuclear metal catalyst, a solid acid resin catalyst, a solid base catalyst and / or a bimetallic MOF derivative catalyst with the reaction temperature of 150 DEG C or below. The adhesive film can realize recycling of the adhesive film and a photovoltaic module in a more efficient and energy-saving manner, is wide in adaptability, and has high crosslinking degree, peel strength and PID resistance.

The application relates to a chiral NSiN ligand based on a phenyloxazoline skeleton, a preparation method and application thereof, wherein the chiral NSiN ligand is prepared from a chiral phenyloxazoline bromide with R or S configuration through lithiation and silylation. The chiral NSiN ligand can be used in transition metal catalyzed asymmetric synthesis, and is used in catalyzing an allylic sulfonylation reaction with a cobalt catalyst, and shows high reaction activity and high stereoselectivity.

The invention belongs to the technical field of organic synthesis, and particularly relates to a synthesis method of an isoxazoline compound. The preparation method comprises the following steps: dissolving a compound 1 and ethyl acrylate in dichloroethane, then adding tert-butyl nitrite, alkali and K2S2O8, in an air environment, irradiating with a 35 W blue LED light source and stirring at room temperature for 12 hours, after the reaction is completed, reducing pressure to remove a solvent, and then performing silica gel column chromatography on a crude product to obtain a product, namely the isoxazoline compound. The synthesis method provided by the invention avoids the problem of residue of a traditional metal catalyst, and provides a new normal form for green synthesis of the isoxazoline compound. As a key intermediate, isoxazoline can derive beta-lactam, beta-amino alcohol and other structures, and a new path is provided for complex molecule synthesis.

Disclosed is a silicone-modified polyimide resin composition comprising a silicone-modified polyimide, a thermal curing agent, wherein the silicone-modified polyimide contains a repeating unit represented by the following general formula (I): in the general formula (I), Ar 1 is a tetravalent organic group having a benzene ring or alicyclic hydrocarbon structure, Ar 2 is a divalent organic group, R is independently selected from a methyl group or a phenyl group, and the thermal curing agent is an epoxy resin, an isocyanate, or a bisoxazoline compound. The silicone-modified polyimide resin composition obtained by the present application has excellent heat resistance, mechanical strength, and light transmittance.

The invention provides a temperature and humidity alternating resistant water-based paint and a preparation method thereof. The temperature and humidity alternating resistant water-based paint is composed of a component A and a component B, the component A comprises an elastic emulsion, an anti-freezing agent, a coalescing agent, a wetting dispersant, a defoaming agent, a thickening agent, a multifunctional additive, water and at least one of glass fibers, high silica fibers and sepiolite fibers; the component B comprises a cross-linking agent; the cross-linking agent is an isocyanate curing agent, an oxazoline cross-linking agent or an aziridine cross-linking agent. According to the temperature and humidity alternating resistant water-based paint provided by the invention, components with specific contents are adopted, so that relatively good overall interaction is realized, and a coating can have good stability in a complex temperature and humidity change environment; and the component A can also comprise a fireproof filler and a flame retardant, can expand and foam when meeting flames to form a foam expansion layer, has high strength and compactness, can prevent flame heat transmission and prolong the fire endurance of the base material, and has good fire resistance.

Method for manufacturing a decorative panel (1) comprising a substrate (2) of thermoplastic material and a top layer (3) provided thereon, said method comprising a step (S1) of preparing a feedstock material with a polymer fraction comprising polyethylene terephthalate (PET) and / or modified PET, and at least one additive, said method comprising a subsequent step (S2) of extruding said feedstock material characterized in that said additive is a chain extender showing one or more of the following properties: - said chain extender comprises an epoxide; - said chain extender comprises a cyclic carboxylic anhydride; - said chain extender comprises an isocyanate; - said chain extender comprises an oxazoline; - said chain extender comprises an epoxy acrylate with terminal and / or internal epoxy groups; - said chain extender comprises a methacrylate; - said chain extender comprises a caprolactam; - said chain extender comprises a pyromellitic dianhydride; - said chain extender comprises a polyol.

The application discloses a bisoxazoline pyridine functionalized porous organic polymer and preparation and application thereof; firstly, a styryl functionalized PyBox monomer (VPyBox) is designed and synthesized, and VPyBox, styrene and divinylbenzene are subjected to free radical polymerization under initiation of azobisisobutyronitrile in a certain proportion to obtain a series of porous organic polymers (POP-PyBox); the POP-PyBox can be used as a solid N , N , N tridentate ligand for Co-catalyzed hydrosilylation of arylalkynes with diphenylsilane; the heterogeneous catalyst system developed by the application has a catalytic activity comparable to that of a homogeneous catalyst reported in the literature, and the catalyst is easy to separate and recover; the recovered catalyst can be recycled for more than 6 times, which can not only greatly reduce the preparation cost of vinylsilane, but also simplify the post-treatment process and reduce the three wastes, and has a good practical application prospect.

This invention belongs to the field of organic ligand technology, and specifically discloses a phosphoxazolin ligand having the structure shown in general formula I or general formula II, or its tautomers, enantiomers and diastereomers: , R 1 Selected from hydrogen, alkyl, perfluoroalkyl, alkoxy, aryl; R 2 Selected from hydrogen, alkyl, perfluoroalkyl, alkoxy, aryl; R 3 Selected from alkyl, cycloalkyl, alkenyl, and aryl; R 4 Selected from alkyl, cycloalkyl, alkoxy, perfluoroalkyl, aryl, and fluorine atoms; R 5 Selected from hydrogen, alkyl, cycloalkyl, alkoxy, perfluoroalkyl, aryl, and fluorine atoms; R 6 The substituents are selected from hydrogen, alkyl, cycloalkyl, alkoxy, perfluoroalkyl, aryl, and fluorine atoms; n and m are the number of substituents, where n+m≤5. This invention also discloses a method for preparing phosphosoxazoline ligands and their application in catalytic allylation, bicyclization, intermolecular desymmetry, or intramolecular condensation reactions of nitrile derivatives.

To provide compounds and compositions for reducing most common opioid-induced hyperalgesia associated with microglial hyperactivation.SOLUTION: 2-pentadecyl-2-oxazoline (PEA-OXA) for use as an opioid adjuvant for preventing the development of or in the treatment of opioid-induced hyperalgesia (OIH), wherein the PEA-OXA is administered with or in combination with an opioid. Wherein the administration is separate, together or simultaneous.SELECTED DRAWING: None

The invention discloses PET (polyethylene terephthalate)-based plastic cloth with high barrier property and a preparation method thereof, belongs to the technical field of preparation of plastic cloth, and aims to solve the technical problem that the barrier property and the mechanical property of the PET-based plastic cloth in the prior art need to be further improved. A hydroxyacetamide body, diol oxazoline and isosorbide modified polyester are sequentially synthesized in a polyester system, two structural units are introduced in the polycondensation process, a modified polyester material with cyclic active sites and bicyclic steric hindrance is formed, an oxazoline group provides an interchain strong effect, and orientation locking and structural compactness are improved; the isosorbide skeleton limits chain segment retraction and prolongs a gas permeation path, and the isosorbide skeleton and the isosorbide skeleton have a synergistic effect, so that the obtained plastic cloth keeps relatively high tensile strength and elongation at break, the heating size change rate is remarkably reduced, excellent gas barrier performance is realized, and comprehensive improvement of the performance is embodied.

The invention provides a plastic packaging bag material and a preparation method thereof, and belongs to the field of polyethylene plastics. The plastic packaging bag material is prepared from the following raw materials in parts by weight: 40 to 50 parts of metallocene polyethylene, 20 to 30 parts of highly branched polyethylene, 5 to 10 parts of zinc ion type ethylene-acrylic acid copolymer, 2 to 5 parts of oxazolinyl-containing polymer, 2 to 5 parts of multifunctional star copolymer, 8 to 12 parts of titanate coupling agent coated nano calcium carbonate, 0.5 to 2 parts of hydroxylated graphene oxide, 1 to 2.5 parts of polyethylene glycol and 0.5 to 2 parts of polydimethylsiloxane, 0.1 to 0.5 part of a beta crystal form nucleating agent, 0.1 to 0.5 part of an antioxidant and 0.1 to 0.5 part of a lubricant. Through the synergistic effect of matrix skeleton strengthening, multi-scale strengthening, dynamic-static crosslinking toughening and interface buffering regulation, synchronous breakthrough of the strength, toughness, puncture resistance and tear resistance of the plastic packaging bag material is achieved.

The application discloses a preparation method of 1,2-propylenediamine, which comprises the following steps: (1) 2-phenyl-5-methyl-2-oxazoline, ZIF-8 catalyst and liquid ammonia are added into a high-pressure reaction kettle, and after temperature rising, stirring and filtration, benzoyl 1,2-propylenediamine is obtained; (2) the benzoyl 1,2-propylenediamine obtained in the step (1), methanol and an alkali metal catalyst are added into an atmospheric pressure reaction kettle with a reflux device, after temperature rising and stirring, sulfuric acid is added to neutralize the alkali metal catalyst, after neutralization, the mixture is filtered, and the filtrate is subjected to distillation to obtain a mixture of methyl benzoate and 1,2-propylenediamine; (3) the mixture obtained in the step (2) is separated by rectification to obtain 1,2-propylenediamine products. The preparation method can reduce the production cost, the process condition is relatively mild, hydrogen is not needed to participate in the amination reaction, the process safety is higher, the raw material conversion rate is high, close to 100% conversion, the synthesis yield is higher than 90%, the preparation process is efficient and safe.

The application discloses a kind of repeatedly injection moulding polyphenyl ether compositions and preparation method thereof, repeatedly injection moulding polyphenyl ether compositions include matrix resin, crosslinking agent and toughening agent;Matrix resin is the mixture of polyphenyl ether and polystyrene;Crosslinking agent is the mixture of low molecular weight oxazoline and polystyrene graft oxazoline;Toughening agent is SEBS-g-MAH;The mass fraction ratio of low molecular weight oxazoline and polystyrene graft oxazoline is 0.5-1.5:2-5, the mass fraction ratio of SEBS-g-MAH and polystyrene graft oxazoline is 5-10:2-5;Preparation method is melt blending method.The preparation method of the application is simple, and the polyphenyl ether composition prepared can be repeatedly injection moulding, which makes up for the shortcomings of prior art.

2-Pentadecyl-2-oxazoline (also known as palmitoylethanolamide oxazoline or PEA-OXA) is used to counteract hyperalgesia induced by the most common opioids (OIH) associated with microglial hyperactivation. In particular, PEA-OXA is administered to humans and animals to prevent or treat some of the adverse effects of opioids by controlling immune hyperactivation. The PEA-OXA is administered separately, sequentially or jointly with the opioid.

The invention discloses a polyurethane hot melt adhesive with high and low temperature resistance and high adhesion and a preparation method thereof, and relates to the technical field of hot melt adhesives. The invention relates to a dynamic crosslinking polyurethane elastomer, which is prepared from the following ingredients in parts by weight: 50 to 60 parts of composite soft-segment polyol, 20 to 25 parts of modified isocyanate ingredients, 5 to 8 parts of dynamic crosslinking chain extenders, 4 to 7 parts of functional ingredients and 0.08 to 0.25 part of catalysts. The functional components comprise nano aluminum nitride, a silane coupling agent, an ultraviolet light absorber, an antioxidant, a polyamide wax thixotropic agent, hydroxyl fluorosilicone oil and a poly (2-ethyl-2-oxazoline)-bis-amino-terminated part. The hot melt adhesive has wide temperature range tolerance, high binding power and waterproofness.

The invention belongs to the technical field of high polymer materials, and particularly relates to a reactive compatilizer and application of the reactive compatilizer in TPU / POM blending modification, and the reactive compatilizer comprises the following components in parts by weight: a polyformaldehyde-b-polyoxazoline block copolymer; maleic anhydride; and dicumyl peroxide; an antioxidant 1010; the polyoxazoline block accounts for 28 to 32 weight percent, and the number-average molecular weight of the polyoxazoline block is 3000 to 5000 g / mol. A main chain is of a block structure or a grafted structure, strong physical adsorption is formed by the block structure or the grafted structure and POM, and part of chain segments can be embedded into the edge of a crystalline region of POM due to the similar structure; chemical / physical double bonding is formed with TPU, the thickness of an interface layer is increased, the bonding strength is high, and stress can be efficiently transmitted. According to the invention, the size of the TPU dispersed phase is reduced from the micron level to the nano level, and the loss of tensile strength and rigidity is reduced while the toughness is improved. The early fracture caused by stress concentration is avoided, and meanwhile, the interference on the crystal structure of the POM matrix is small.

The application belongs to the technical field of organic synthesis, and particularly relates to a kind of bromine-containing isoindoline-1-ketone compound and preparation method thereof.The preparation method of the bromine-containing isoindoline-1-ketone compound uses commercially available aldehyde-derived imine as raw material, is reacted with aryl bromide oxazoline compound under butyl lithium condition, and then is subjected to acid-mediated cascade cyclization process, to efficiently construct isoindoline-1-ketone skeleton.The isoindoline-1-ketone compound can be directly used as an organic catalyst, the N-H functional group remaining in the structure of the isoindoline-1-ketone compound has reactivity, can be coupled with other bioactive molecules as a key connection site, to construct functional derivatives, the amide carbonyl group thereof can be further reduced, to be converted into pyrrolidine structural unit, and the structure itself can be used as a catalytically active center, to expand its application in the field of catalysis.

The present invention relates to the continuous synthesis of polyoxazoline. The subject of protection relates to a method for continuously synthesizing polyoxazoline, the steps of which are - including the step of introducing at least one oxazoline monomer into a spiral tube reactor under the action of heat, wherein the spiral tube reactor comprises at least one spirally wound tube having an inner diameter of the tube and a diameter of the spiral winding, and the method is · the inner diameter of the tube is in the range of 4.5 mm to 34 mm, and · the lambda ratio as the ratio of the inner diameter of the tube to the diameter of the spiral winding is in the range of 0.11 to 0.17, and · the spirally wound tube is a stainless steel tube, and also relates to the use of a spiral tube reactor for the continuous synthesis of polyoxazoline, wherein the spiral tube reactor is a use comprising the following components, namely a spirally wound tube having an inner diameter of the tube and a diameter of the spiral winding, · the inner diameter of the tube is in the range of 4.5 mm to 34 mm, and, · the lambda ratio as the ratio of the inner diameter of the tube to the diameter of the spiral winding is in the range of 0.11 to 0.17, and · the spirally wound tube is a stainless steel tube, characterized by.

The application belongs to the technical field of organic synthesis, and particularly relates to a method for catalytically synthesizing N-substituted-3-methyl indole compounds by using aza carbene oxazoline ring palladium compound. The application aims to provide a new synthesis method for N-substituted-3-methyl indole compounds, specifically, a high-catalytic-activity aza carbene oxazoline ring palladium compound is used as a catalyst to catalyze a direct coupling cyclization reaction of o-dichlorobenzene or o-bromochlorobenzene compounds and allyl arylamine, so as to obtain N-substituted-3-methyl indole compounds. The catalyst used in the application has high catalytic activity, the reaction has good product and functional group compatibility, in addition, the catalyst itself is easy to synthesize, and aryl chlorides used in the synthesis route are cheap and easy to obtain. Therefore, the synthesis route provided in the application has great competitive advantages and industrial production utilization value.

The invention relates to a PET white copper antibacterial master batch as well as a preparation method and application thereof. The master batch takes PET as a matrix, is compounded with a zirconium phosphate copper-loaded antibacterial agent and a titanium dioxide white system, is matched with an antioxidant, a heat stabilizer and a lubricating and dispersing aid, and is obtained by premixing, melting, blending, extruding and granulating; a reactive chain extender / compatilizer containing an epoxy functional group and / or an oxazoline functional group can be added into the master batch and reacts with a PET end group in the processing process to realize chain extension and end capping and form a long-chain branch / light branched structure, so that the melt viscosity and the processing stability are improved, the wetting coating and dispersion stability of antibacterial particles and pigments is enhanced, and the antibacterial property of the antibacterial particles and the pigments is improved. Chromatic aberration and yellowing are reduced, and filtering pressure rise is slowed down. The obtained master batch is used for preparing white antibacterial fibers and products by blending spinning or molding with PET slices, and has the characteristics of good antibacterial effect, high appearance consistency and excellent durability and processability.

This invention discloses a chiral oxazoline-pyridine-imine cobalt compound, its synthesis method, and its applications. The synthesis method involves the condensation reaction of 2-cyano-6-acetylpyridine and an aniline derivative with p-toluenesulfonic acid to generate a pyridine-imine compound. This compound is then cyclized with different chiral amino alcohols in the presence of zinc trifluoromethanesulfonate to generate chiral oxazoline-pyridine-imine ligands. The reaction of these ligands with anhydrous cobalt chloride successfully prepared four chiral oxazoline-pyridine-imine cobalt compounds. The cobalt catalyst synthesized in this invention possesses different chiral groups, electronic effects, and steric hindrance, and can catalyze the polymerization of isoprene.

A method for treating a pathogen, comprising the steps of: polymerizing a molecule to form a polymer, the molecule comprising an alkyl in a molecule comprising a 2-alkyl-2-oxalozine other than a 2-ethyl-2-oxazoline; preparing a formulation comprising a derivative of the polymer and an organic solvent, the derivative comprising protonization of greater than ten percent of monomers of the polymer; and inactivating at least ninety percent of the pathogen within ten minutes of contact of the pathogen with the formulation.

The invention belongs to the technical field of organic synthetic chemistry and agricultural chemicals, and particularly relates to an imidazo aza-aryl oxazoline compound as well as a preparation method and application thereof. The imidazo aza-aryl oxazoline compound provided by the invention has a structure as shown in a formula 1, comprises substituted imidazo aza-aryl and substituted oxazoline substructures, has a remarkable inhibition effect on various plant pathogenic fungi, and can be used as a novel bactericide candidate compound or directly used as a bactericide; the compound also has an inhibiting effect on various harmful mites or aphids, and can be used as an acaricide. The imidazo nitrogen heteroaryl oxazoline compound provided by the invention has positive significance in discovery of innovation of new drugs. Formula 1.

A method for reducing interaction of a single virus member with a host, comprising the steps of: forming a film from a solution comprising an at least partially protonated / deacylated poly(2-alkyl-2-oxazoline) and an at least partially protonated polyalkylenimine, the film comprising a total cationic charge in a range of 0.001 to 10.0 coulombs per square inch; inhibiting interaction of the single virus member, on the film, with the host through the steps of electrostatically pulling together first and second anionic sites of the virus with first and second respective multiple cationic sites of the polyalkylenimine and the poly(2-alkyl-2-oxazoline); and inactivating at least fifty percent of a set of the virus according to tests and procedures of ISO 21702 on a non-porous surface.

An ophthalmic device which is a polymerization product of a monomeric mixture includes (a) one or more cationic initiators comprising one or more polymerizable groups; and (b) one or more alkyl-substituted oxazolines.

A thermoplastic resin composition for an air intake hose has improved heat resistance by mixing a mixed resin including a thermoplastic polyether-ester elastomer and polybutylene terephthalate, a styrene-acrylonitrile resin, and additives in appropriate amounts, and a molded article including the same. This thermoplastic resin composition includes a mixed resin including a thermoplastic polyether-ester elastomer and polybutylene terephthalate, a styrene-acrylonitrile resin, an epoxy-based compatibilizer, a chain extender, an antioxidant, a thermal stabilizer including at least one selected from the group consisting of an imide-based stabilizer, an oxazoline-based stabilizer, and combinations thereof, a light stabilizer, and a filler.

The application discloses a high and low temperature resistant and high adhesive force polyurethane hot melt adhesive and a preparation method thereof, and relates to the technical field of hot melt adhesives. Components of the polyurethane hot melt adhesive include, by weight fraction, 50-60 parts of a composite soft segment polyol, 20-25 parts of a modified isocyanate component, 5-8 parts of a dynamic crosslinking chain extender, 4-7 parts of a functional component, and 0.08-0.25 parts of a catalyst. The functional component comprises nano aluminum nitride, a silane coupling agent, an ultraviolet absorber, an antioxidant, a polyamide wax thixotropic agent, hydroxyl fluorosilicone oil and poly(2-ethyl-2-oxazoline)-diamino end-capping. The polyurethane hot melt adhesive has the advantages of wide temperature resistance, high adhesive force and water resistance.

The invention relates to the technical field of functional polymer materials, in particular to a poly (2-oxazoline) thermo-sensitive polymer with a side chain containing a sulfoxide structure and a preparation method and application thereof.Thioethers with different carbon chain lengths are introduced to the side chain of poly (2-oxazoline) through a sulfydryl-alkene click reaction and then further oxidized into the sulfoxide structure, and the temperature-sensitive polymer with the side chain containing the sulfoxide structure is obtained. The side chain of the poly (2-oxazoline) thermo-sensitive polymer contains a sulfoxide structure; thioether has certain hydrophobicity, and the hydrophilicity is remarkably enhanced after thioether is oxidized into sulfoxide, so that an effective way is provided for controllable adjustment of molecular hydrophilic-hydrophobic balance; moreover, the poly (2-oxazoline) thermo-sensitive polymer with the side chain containing the sulfoxide structure shows obvious LCST type thermo-sensitivity, the cloud point temperature of the polymer is gradually reduced along with the increase of the concentration, the correlation between the thermo-sensitivity and the polymer structure and concentration is revealed, and by controlling the carbon chain length of thioether and the polymer concentration, the stability of the polymer is improved. The thermo-sensitive polymer with different temperature response points can be obtained.