55 results about "Oxazines" patented technology

The invention discloses a high-temperature-resistant resin glue solution for a copper-clad plate and a preparation method of the high-temperature-resistant resin glue solution, and relates to the technical field of copper-clad plates. The high-temperature-resistant resin glue solution is prepared from the following raw materials in parts by mass: 60 to 80 parts of dicyclopentadiene phenol type epoxy resin, 20 to 40 parts of fluorinated benzoxazine, 10 to 30 parts of dicyclopentadiene phenol type phenolic resin, 5 to 10 parts of hyperbranched polysiloxane, 90 to 100 parts of solvent, 5 to 8 parts of additive and 10 to 20 parts of inorganic filler. Wherein trifluoromethyl and naphthalene rings are introduced into the fluorinated benzoxazine, so that the heat-resistant stability and the dielectric property of the resin glue solution are effectively improved; a copper-clad plate sample prepared from the resin glue solution has a good application effect.

The invention discloses a fluorinated polypropylene imine (F-PPI) cationic antibacterial agent as well as a preparation method and application thereof. According to the method, F-PPI with adjustable molecular weight is synthesized on the basis of a 2-propyl oxazine monomer. The chemical structure is clear, the molecular weight is uniform and controllable, the fluorinated group is located at the head end of PPI, the controllable degree is high, and the process repeatability and the batch stability are high. The antibacterial efficiency of the cationic polymer can be improved by fluorinated groups and main chain amino cations, and the cationic polymer is endowed with better antibacterial selectivity and biocompatibility according to the characteristics of fluorine elements. End group fluorination modification is carried out in the polymerization process of linear polypropylene imine, and high hydrophobicity and biological inertness of fluoride can be combined, so that the cationic antibacterial agent with low cytotoxicity and high antibacterial efficiency is obtained. The method is simple and convenient in synthesis process, has high repeatability, and is beneficial to construction of high-efficiency and low-toxicity cationic polymers.

Disclosed are compounds of formula (I) (including all stereoisomers, N-oxides, and salts thereof), pesticidal compositions containing them, and their use as herbicides, wherein A is a 5- or 6-membered heterocyclic ring containing ring members selected from carbon atoms and up to four heteroatoms independently selected from up to two O, up to two S, and up to four N atoms, wherein one or two carbon or sulfur ring members of the heterocycle may optionally be present in the oxidized form of a carbonyl, sulfonyl, or sulfinyl moiety, said ring being bonded to the remainder of formula (I) through a carbon atom or heteroatom, and wherein one to four R 1 optionally replaced by R 1a , R 1b , R 2 , R 3a , R 3b , R 4a , R 4b , X 1 , X 2 , n, p and q are as defined in this disclosure. [Formula 1] TIFF2025525502000168.tif39170

The invention discloses polyurethane automobile finish paint and a preparation method thereof, and relates to the field of automobile finish paint. When the polyurethane automobile finish paint is prepared, titanium dioxide, 3-butene-1, 2-diol and 6-bromine-3-(4-bromophenyl)-2, 4-dihydro-1, 3-benzoxazine are uniformly mixed, and modified titanium dioxide is prepared; carrying out formylation on microcrystalline cellulose, and grafting n-butyric acid, acetic anhydride and 2-aminopiperazine to obtain modified cellulose; the preparation method comprises the following steps: reacting 1, 3, 5, 7-tetramethylcyclotetrasiloxane with vinyl pentamethyldisiloxane to obtain single-ended vinyl hydrogen-containing silicone oil; acrylic acid, methyl acrylate, hydroxypropyl methacrylate and single-ended vinyl hydrogen-containing silicone oil are subjected to copolymerization, and modified acrylic resin is prepared; and uniformly mixing the modified acrylic resin, the modified cellulose, the modified titanium dioxide and various assistants to prepare the polyurethane automotive finish. The polyurethane automobile finish paint prepared by the invention has excellent quick-drying property, impact resistance and aging resistance.

A biomass benzoxazine-based shape memory resin, a preparation method therefor, and an application thereof. The method includes: using biomass furfuryl amine, vanillic aldehyde, and paraformaldehyde as raw materials; obtaining an aldehyde group-containing biomass benzoxazine monomer by means of a heating reaction; mixing the aldehyde group-containing biomass benzoxazine monomer with polyether amine, and obtaining a Schiff base biomass benzoxazine monomer by means of a coupling reaction; and curing the Schiff base biomass benzoxazine monomer to obtain the biomass benzoxazine resin having a shape memory function. The benzoxazine-based shape memory resin has excellent thermal performance, high tensile modulus, high strength; an original shape can be permanently changed according to needs, the defect that traditional cross-linked polymers cannot be reprocessed after being formed is overcome, a recovery function under the condition of heating stimulation achieved, an application range of a shape memory polymer widened due to excellent thermal performance and mechanical performance.

The application provides an oxazinane compound, a preparation method, a pharmaceutical composition and application, and a general formula of the oxazinane compound or a pharmaceutically acceptable salt thereof is shown as formula (I). The oxazinane compound has obvious proliferation inhibition effect on cancer cells, especially human head and neck squamous cell carcinoma cell strains HSC4, HSC3, HSC2, CAL33, SCC4 and human glioma cell strain U251, can block the cell cycle, effectively inhibit the phosphorylation level of key proteins in the PI3K / AKT / mTOR pathway at the molecular level, has the potential to be prepared into a new antitumor drug, and has a good market prospect.

The present invention relates to the field of the synthesis of polymers. Disclosed are a polypropyleneimine derivative, and a preparation method therefor and a use thereof. The method comprises: firstly, initiating polymerization of an oxazine derivative monomer by means of an initiator, then removing a side chain from a polymer to obtain polypropyleneimine, selecting the polypropyleneimine for a further reaction to obtain a zwitterionic precursor polymer, and finally, hydrolyzing the precursor polymer to obtain a polypropyleneimine zwitterionic derivative. The polypropyleneimine zwitterionic derivative prepared in the present application contains a zwitterionic group in each or some of repeating units. The zwitterionic group endows the polymer with good hydrophilicity and anti-protein non-specific adsorption properties. The polymer has no immunogenicity, will not be recognized by the immune system and captured by immune cells, can be used as a drug carrier and a gene vehicle, and has good blood circulation stability. Alternatively, the polymer is used as a biological material, a medical device, an implantable material, or a cell delivery material and has good anticoagulation, anti-rejection, and biofilm properties.

To provide a liquid crystal sealant that yields a cured product having a high glass transition temperature (Tg) and low moisture permeability.SOLUTION: The present invention relates to a sealant composition comprising: (A) a curable resin containing one or more selected from the group consisting of (A-1) an epoxy resin having two or more functional groups, (A-2) a partially (meth)acrylated epoxy resin of an epoxy resin having two or more functional groups, and (A-3) a (meth)acrylic resin having two or more functional groups; (B) a photopolymerization initiator and / or (C) a thermal curing agent; and (D) a benzoxazine compound.SELECTED DRAWING: None

A crosslinkable thermoplastic resin composition may include a polymer formed from the reaction between a bis-benzoxazine monomer and a bifunctional comonomer having phenol, amine, and / or thiol functional groups, wherein the polymer contains at least one crosslinkable group. A method of forming a crosslinkable thermoplastic resin composition may include reacting a bis-benzoxazine monomer and a bifunctional comonomer to form a polymer containing at least one crosslinkable group. A method of forming a cured thermoplastic resin may include curing the crosslinkable thermoplastic resin composition by applying an external stimulus.

Provided are a resin composition for forming a low dielectric adhesive layer that has good 5G-compatible electrical properties (low dielectric properties), ensures high adhesiveness, suppresses the generation of bubbles, and has a small coefficient of linear thermal expansion (CTE); and an adhesive composition containing the resin composition. The adhesive composition contains a resin composition containing a maleimide resin having a molecular weight of 1000 or more and a benzoxazine resin, and the benzoxazine resin has a site represented by formula (1).In formula (1), R represents a hydrocarbon group having 4 or more carbon atoms. The hydrocarbon group optionally has an unsaturated binding site.

A curable benzoxazine resin composition for a fiber-reinforced composite material is provided which contains at least a component [A], a component [B], and a component [C]. The component [A] includes at least one multifunctional benzoxazine resin having a non-hydrocarbon linkage such as carbonyl, oxygen, sulfur, sulfone or sulfoxide between aromatic moieties. The component [B] includes at least one multifunctional benzoxazine resin having a direct bond or a hydrocarbon linkage between aromatic moieties. The component [C] includes at least one cycloaliphatic epoxy resin containing at least two epoxy groups which are part of cycloaliphatic rings. The curable benzoxazine resin composition is useful in the molding of fiber-reinforced composite materials. More particularly, the curable benzoxazine resin composition makes possible a fiber-reinforced composite material where the cured material obtained by heating has superior performance in extreme use environments, such as high temperature and high compressive load.

The invention relates to the technical field of thin film materials, and discloses a lanthanum gallium silicon thin film material substrate and a preparation method thereof.The preparation method comprises the steps that styrene modified benzoxazine, styrene, a gallium silicon liquid gold compound and lanthanum are added into a double-screw extruder, melt extrusion is conducted, the mixture is added into a model machine, cooling is conducted, and the lanthanum gallium silicon thin film material substrate is obtained; according to the present invention, the rigid benzoxazine structure is introduced into the polyethylene to increase the rigidity of the polyethylene, and is subjected to blending modification with the gallium-silicon liquid gold compound and the lanthanum to improve the mechanical property of the polyethylene, and the benzoxazine can form the heat-resistant phenolic resin structure at the high temperature so as to provide the high thermal decomposition temperature and the high temperature resistance of the lanthanum gallium-silicon film material substrate;

The invention relates to the technical field of thermosetting materials, and discloses a preparation method of benzoxazine and bismaleimide transparent resin alloy, which comprises the following steps: preparing required materials: mixing bismaleimide and benzoxazine according to a certain proportion, adding a proper amount of solvent, and stirring for a period of time to form a uniform mixture; adding a proper amount of cross-linking agent into the mixture, fully stirring, casting a blend solution on a glass plate pretreated with dimethyldichlorosilane, drying at 50 DEG C for 4-6 hours, and then respectively carrying out heat treatment at different temperatures for 1-3 hours to obtain an alloy membrane; and testing the performance of the alloy film. According to the process, bismaleimide and benzoxazine are used as main raw materials, and the transparent bismaleimide resin alloy material with excellent performance is prepared through a specific formula and process steps. The alloy material not only has high transparency and excellent heat resistance, but also has relatively high mechanical strength and chemical stability.

The present invention relates to the use of 3,4-dihydro-2H-benzo-[1,4]oxazine drugs or salts thereof in the preparation of drugs for inhibiting ferroptosis, in particular to the use of 3,4-dihydro-2H-benzo-[1,4]oxazine compounds or salts thereof in the preparation of drugs for treating ferroptosis-related diseases, wherein the ferroptosis-related diseases include brain trauma, stroke, cardiovascular disease, liver and kidney failure, inflammation and neurodegenerative diseases, such as Parkinson's disease and schizophrenia.

The invention belongs to the technical field of polymer composite materials, and provides a PEEK / CF wear-resistant composite material and a preparation method thereof. The wear-resistant composite material is prepared from the following raw materials: PEEK powder, modified CF, B-a type benzoxazine, a compound lubricant, an antioxidant and a dispersing agent, the preparation of the modified CF comprises the following steps: carrying out plasma activation, bifunctional grafting and nanoparticle anchoring on chopped CF to obtain the modified CF; the compound lubricant comprises hydroxylated boron nitride and polyimide micro powder with the particle size of 1-5 microns according to the mass ratio of 2: 1. The preparation method comprises the following steps: (1) mixing PEEK powder subjected to vacuum drying, B-a type benzoxazine, a compound lubricant, an antioxidant and a dispersing agent to obtain a premix; (2) adding the premix and the modified CF into a double-screw extruder, and carrying out melt blending; and (3) after injection molding, cooling and demolding the mold, and drying at constant temperature to obtain the product. According to the preparation method, the wear resistance, the mechanical property, the high-temperature property and the processability of the composite material can be synchronously improved.

Described is a benzoxazine derivative of formula (I) # imgabs0 # (I), also a method for producing a benzoxazine derivative according to the invention, and a kit for producing a recoverable polymer and the use of a benzoxazine derivative according to the invention or a kit according to the invention for producing a recoverable polymer, a recoverable polymer based on polybenzoxazine or polybenzoxazine derivatives, a method for producing a recoverable polymer according to the invention and the use of a recoverable polymer according to the invention as a matrix resin for plastics and / or adhesives and / or composites are also described.

This invention provides a method for preparing 2,2'-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one, relating to the field of compounds. The preparation method of this invention includes the following steps: (1) reacting anthranilic acid with terephthaloyl chloride in an organic solvent to generate intermediate A; (2) centrifuging the reaction product of step (1) to separate the wet crystalline intermediate A and the centrifugal mother liquor; (3) performing a cyclization reaction between the wet crystalline intermediate A from step (2) and acetic anhydride; (4) centrifuging, washing, and drying the reaction product of step (3) to obtain the target 2,2'-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one product. This invention prepares 2,2'-(1,4-phenylene)bis-4H-3,1-benzoxazin-4-one with not only low yellowness values ​​and high purity, but also high yield. The preparation method of the present invention has significant industrial value, and is particularly applicable to the field of polymer material additives where strict requirements are placed on product purity and yellowness.

Lipid-polymer conjugates and associated lipid nanoparticles are described herein. Such conjugates can comprise polyoxazolines and / or poly oxazines, thereby obviating the use of PEG-based treatments.

The invention belongs to the technical field of electronic elements, and discloses an electrophoretic paste and a preparation method and application thereof. The electrophoretic slurry is prepared from the following components in parts by weight: 22 to 32 parts of modified epoxy resin, 3 to 7 parts of cationic emulsifier, 0.1 to 0.3 part of silane coupling agent, 10 to 16 parts of benzoxazine crosslinking agent, 50 to 65 parts of solvent, 10 to 20 parts of pigment and 3 to 5 parts of inorganic filler, the modified epoxy resin is a copolyester compound with an epoxy resin group at a terminal group. The electrophoresis slurry obtained by compounding the modified epoxy resin, the cationic emulsifier, the silane coupling agent, the benzoxazine cross-linking agent, the solvent, the pigment and the inorganic filler can be used in an electrophoresis protection layer of the chip resistor, so that the prepared chip resistor still has excellent stability under extreme conditions; the influence of extreme environments (temperature, humidity, overload current and the like) on the performance of the resistor is remarkably reduced, and the stable operation of the resistor in a complex environment can be ensured.

Provided are a cured product of an aminodecomposable benzoxazine resin, a method for producing the same, and an aminodecomposition method. 【Solution means】A method for producing a cured product of an aminodecomposable benzoxazine resin, including a mixing step of melting and uniformly mixing a benzoxazine resin and a phenolic compound to obtain a resin composition, and a curing step of heating the resin composition to a curing temperature of 160°C to 230°C to form a cured product of an aminodecomposable benzoxazine resin. By selecting a low curing temperature for curing and adding a phenolic compound, the curing reaction is promoted, the produced cured product of benzoxazine resin has good material properties and chemical decomposability, and further solves the problem that the recovery of the cured product of benzoxazine resin is not easy, achieving the goal of sustainable use.

The application discloses a preparation method of 2-oxo-4-phenyl oxazine sulfonyl fluoride, and belongs to the field of organic chemical synthesis. The method is that a cinnamyl (fluorosulfonyl) carbamate compound is used as a substrate, and reacts under the action of a catalyst and a base in specific tetrahydrofuran solvent, and a 2-oxo-4-phenyl oxazine sulfonyl fluoride compound is obtained. The application uses cheap and easily obtained iodobenzene diacetic acid and potassium tert-butoxide as the catalyst and the base respectively, the substrate has wide applicability, the raw material is simple and easy to obtain, the economic cost is low, and the target product can be obtained in a good yield.

The invention discloses a crystal of a benzoxazinone compound and a preparation method of the crystal, and particularly discloses a compound shown as a formula (I) and a preparation method and application of the crystal of the compound. # imgabs0 #

The invention discloses a preparation method and application of a trans-dimming film material, and relates to the technical field of dimming films.The preparation method comprises the steps that 1, a photosensitive benzoxazine orientation agent is prepared; 2) a coating process; 3) exposure patterning treatment; 4) performing low-temperature thermocuring; 5) assembling and packaging; through the synergistic effect of a benzoxazine phenol-rich aromatic structure and hexafluoropropyl, the flame retardant has excellent oxidation resistance, yellowing and aging are effectively resisted, and the service life is prolonged; a highly aromatized skeleton and catalytic cross-linking design endows the material with a high carbon formation rate, and the thermal stability and flame-retardant safety are enhanced; a dual covalent bond locking mechanism formed by photo-dimerization and thermal polymerization ensures the extreme stability of an oriented pattern, so that the dimming performance is durable and reliable; the obtained dimming film material is suitable for the field of dimming films of intelligent windows and privacy partitions.

The invention discloses a low-dielectric-loss hydrocarbon resin glue solution for a copper-clad plate and a preparation method of the low-dielectric-loss hydrocarbon resin glue solution, and relates to the technical field of copper-clad plates. 1, 2-polybutadiene and a hydrogenated styrene-butadiene block copolymer are compounded to guarantee low dielectric loss; hydrocarbon resin is introduced into a cyanate ester-bismaleimide-benzoxazine resin system to prepare a composite resin system, bisphenol A cyanate ester is pre-polymerized under catalysis of zinc acetylacetonate, a triazine ring structure is formed through trimerization, the glass transition temperature is increased, the dielectric constant is reduced, phenolphthalein polyarylether sulfone improves toughness and impact strength, and the dielectric constant is reduced. Bismaleimide is added to improve the adhesive force and thermal stability, and benzoxazine is subjected to ring-opening polymerization to provide phenolic hydroxyl groups and secondary amine which participate in crosslinking to form a low-dielectric thermosetting network. The modified ammonium polyphosphate and the silica powder form a heat insulation layer, phosphorus-silicon synergistic flame retardance is formed, and UL-94V-0-level flame retardance is achieved. The copper-clad plate provided by the invention is especially suitable for the high-end fields of 5G high-frequency copper-clad plates, aerospace thermal protection coatings and the like.

This invention discloses a highly efficient selective UV-absorbing film based on polyvinyl acetal and its preparation method, belonging to the technical field of polymer functional membrane materials. The UV-absorbing film comprises the following components in parts by weight: 55-95 parts of matrix resin, 5-45 parts of plasticizer, 0.005-1.2 parts of core UV absorber, 0.01-0.3 parts of auxiliary UV absorber, 0.01-0.8 parts of composite antioxidant, 0.01-0.8 parts of light stabilizer, and 0.0025-0.0065 parts of metal ion additive. The core UV absorber is an alkyl-modified benzoxazinone compound, and the composite antioxidant is a combination of a hindered phenolic resin as the main antioxidant and a thiophosphate ester as the auxiliary antioxidant. This invention achieves highly efficient blocking of UV-B radiation and high transmittance of UV-A radiation. Simultaneously, the film material has advantages such as low initial yellowing, excellent long-term anti-yellowing performance, good thermal stability, good compatibility with the matrix, and no exudation. The present invention also provides a method for preparing the core UV absorber and a method for preparing the membrane, which are simple processes and suitable for industrial production.

The present invention belongs to the field of semiconductor technology, specifically relating to a phenoxazine-like compound, its preparation method and application, and an electroluminescent device. The present invention provides a phenoxazine-like compound having a structure as shown in Formula I. The structure of the phenoxazine-like compound provided by the present invention contains a rigid phenoxazine group, which improves the structural stability of the compound. Furthermore, the compound provided by the present invention uses the phenoxazine-like structure as a parent core to connect multiple groups. The groups in the phenoxazine-like structure have strong electronic properties, which promote cross-intersection and separation between the multiple groups, preventing free rotation of the groups, resulting in a higher density of the compound, an increased refractive index of the material, and thus an improved light extraction efficiency. Using the phenoxazine-like compound provided by the present invention as a raw material to prepare the light extraction layer of an electroluminescent device can effectively improve the light extraction efficiency of OLED devices. #imgabs0#

The present invention provides: a benzoxazine compound obtained using a polyethylene glycol modified lignin as a raw material; a resin composition containing said benzoxazine compound; and a cured product thereof. Specifically, the present invention provides: a benzoxazine compound which dissolves in an organic solvent and has a meltable lignin skeleton; and a method for producing the same. Also provided are: a resin composition which contains said benzoxazine compound and produces a cured product exhibiting excellent heat-resistance, high strength, and low tensile elastic modulus; and a cured product of the same. The present invention pertains to: a benzoxazine compound including a reaction product of an aldehyde compound, an amine compound, and a novolak-type phenol resin derived from lignin modified by a polyethylene glycol; a resin composition containing said benzoxazine compound; a cured product of said resin composition; a complex (a prepreg or the like) including said resin composition and a base material; a cured product of said complex; and a method for producing said benzoxazine compound.

A process for manufacturing a polybenzoxazine monomer, crosslinking the latter, and using the crosslinked product to form an ablative thermal protection system for a thruster nozzle or atmospheric reentry body.

The invention discloses a preparation method of a poly (benzoxazine-siloxane) copolymer emulsion, and relates to the technical field of experimental design, and the preparation method comprises the following steps: 1, mixing bisphenol A, amino silicon oil and paraformaldehyde according to a ratio, and carrying out a polymerization reaction to obtain a benzoxazine monomer; according to the preparation method, bisphenol A, amino silicon oil and paraformaldehyde are subjected to a copolymerization reaction to obtain a poly (benzoxazine-siloxane) copolymer, an emulsifier and the poly (benzoxazine-siloxane) copolymer are stirred and mixed, the emulsifier with a specific HLB value is combined to prepare a stable emulsion,-NH2 of the amino silicon oil is used as an amine source of a benzoxazine monomer, and the stable emulsion is prepared. By controlling the ammonia value of the amino silicon oil, the proportion of the benzoxazine monomer is smaller than or equal to 5%, flexibility and surface energy can be balanced, the curing temperature of the emulsion is reduced to 120 DEG C from 200 DEG C, the surface energy is smaller than or equal to 15 mN / m, the wear resistance is larger than or equal to 500 times of demolding circulation, and the preparation method is more suitable for industrial production.