235 results about "Norbornene" patented technology

The invention provides a novel polynorbornene anion exchange ionomer containing a polar functional group as well as a preparation method and application of the novel polynorbornene anion exchange ionomer. The polynorbornene has excellent thermal stability and chemical stability. Meanwhile, the AEI main chain of the polynorbornene has no aryl group, so that the adsorption influence caused by the aryl group is avoided. The synthesized addition polynorbornene AEI in the form of quaternary ammonium salt can be dissolved in a low-boiling-point solvent, and it is ensured that a membrane electrode can be prepared through a solvent casting method. Besides the solubility of the AEI, the addition polynorbornene-based AEI in the form of quaternary ammonium salt is modified by utilizing a thiol-ene click reaction, an anion exchange ionomer containing a polar functional group can be prepared, the interaction between the AEI and an electrolytic catalyst is improved, the reaction is simple and easy to operate, the universality is high, and the method is suitable for industrial production. And the current density in the AEMWE system containing the AEI can be effectively improved.

The invention relates to an aliphatic copolyester elastomer and a preparation method thereof, and belongs to the field of high polymer materials. The elastomer is prepared through a series ring-opening copolymerization reaction of epoxide and cyclic anhydride, and the method comprises the following steps: under the action of a metal-free catalyst (a phosphazene ligand P1-tert-octyl / triethyl boron system) and an initiator (terephthalyl alcohol), carrying out a series ring-opening copolymerization reaction on epoxide and cyclic anhydride, the preparation method comprises the following steps: reacting epoxide (such as epoxypropane and allyl glycidyl ether) with aliphatic anhydride (such as glutaric anhydride) in a xylene solvent to generate a polyester prepolymer retaining an active end; adding a second group of epoxide (such as cyclohexene oxide) and anhydride (such as tetrahydrophthalic anhydride and norbornene dianhydride), continuously reacting to form a block copolymer, and then crosslinking. The material performance can be regulated by changing the monomer combination, the atom economy is high, and the raw materials can be produced on a large scale. The process is simple and environment-friendly, and a new choice is provided for application of the degradable elastomer in the fields of medical treatment, environmental protection and the like.

The invention discloses a carbon fiber modified sizing agent as well as a preparation method and application thereof. The preparation method of the carbon fiber modified sizing agent comprises the following steps: (1) reacting 5-norbornene-2-methylamine with monofunctional epoxy resin to obtain slurry; and (2) dissolving the slurry prepared in the step (1) in an organic solvent to prepare the modified sizing agent. And then obtaining the modified carbon fiber through a dipping and sizing process. The method is simple in process, and the interface bonding strength of the carbon fibers and the polydicyclopentadiene can be greatly improved.

The invention relates to the technical field of electronic materials, in particular to a copper-clad plate resin composition with an ultralow-loss medium and a preparation method of the copper-clad plate resin composition. The composition comprises the following components: modified polyphenyl ether, dicyclopentadiene epoxy resin, trifunctional epoxy resin, active ester, cyanate ester, DMAP, spherical silicon dioxide and a POSS-silicon dioxide compound, the preparation method comprises the following steps: carrying out surface norbornenylation modification on bimodal spherical silicon dioxide, and carrying out click reaction on the bimodal spherical silicon dioxide and octa-aminophenyl polysilsesquioxane with tetrazinyl at the tail end to prepare a POSS-silicon dioxide compound, so as to construct an interface transition layer with gradient modulus. According to the invention, collaborative optimization of dielectric loss, thermal mechanical properties and interface bonding strength is realized, and the material has excellent properties of low dielectric loss, high thermal stability, high peel strength and the like, and is suitable for the fields of 5G communication, high-frequency electronic equipment and the like.

The invention discloses a low-residue lithium battery positive electrode tab film adhesive material and a preparation method thereof, and belongs to the technical field of lithium battery auxiliary materials. The preparation method comprises the steps of copolymer synthesis, premixing, filler dispersion, crosslinking system introduction and defoaming, and coating and packaging, the copolymer is prepared by norbornene, hexafluorobutyl acrylate and maleic anhydride free radical copolymerization, and fluorinated hyperbranched polyester is subjected to ester exchange and epoxy ring opening one-step functionalization. Aiming at the problems of high high-temperature residue, weak interface adhesion and poor electrolyte resistance of the existing adhesive, the invention designs that a fluorine-containing copolymer with high thermal stability and high reaction activity is taken as a main body and is matched with a reactive compatibilizer to construct a strong chemical bonding interface, and a hyperbranched stabilizer with double functions of physical binding and chemical chelation is introduced, so that the adhesive is prepared. The tab adhesive film bonding material with ultralow residue, ultrahigh peel strength and excellent electrolyte resistance is successfully prepared, and the long-term reliable sealing requirement of a high-energy-density lithium battery can be met.

The application belongs to the technical field of organic compound synthesis and the field of polymer preparation, and discloses a method for directly preparing a cycloolefin copolymer from dicyclopentadiene and ethylene based on a continuous flow reactor; the continuous flow reactor is used to efficiently prepare norbornene and derivatives thereof from ethylene and dicyclopentadiene, and then the norbornene and derivatives thereof are used to prepare a cycloolefin copolymer from excessive ethylene. The application uses dicyclopentadiene and ethylene as raw materials, realizes a continuous process from the synthesis of a cycloolefin monomer to the preparation of a cycloolefin copolymer, and the cycloolefin monomer does not need to be separated and stored and can directly participate in the polymerization reaction, so that the original complicated process is effectively simplified, energy consumption is reduced, the catalyst in the polymerization stage is not easy to be deactivated even at high temperature, the catalytic efficiency is high, and a high polymer yield can be obtained in a very short time.

The invention discloses a preparation method of N-hydroxyl-5-norbornene-2, 3-dicarboximide sulfonate, which is characterized in that the N-hydroxyl-5-norbornene-2, 3-dicarboximide sulfonate is used as a raw material. The preparation method comprises the following step: in the presence of alkali, carrying out esterification reaction on a compound II and a compound III in a solvent to obtain a compound I. The preparation method disclosed by the invention can be used for obtaining a high-purity product with high yield and has a good industrial production prospect.

The invention discloses a paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating, and belongs to the technical field of polyurethane adhesives, the paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating comprises the following components by weight: 50-70 parts of modified polyester polyol, 30-50 parts of modified polyether polyol, 15-24 parts of diisocyanate, and 5-30 parts of tackifying resin, 0.1-1 part of a catalyst, 5-35 parts of a filler, 0.05-2 parts of a polymerization inhibitor and 0.1-0.5 part of an antioxidant; the modified polyester polyol is modified poly (butylene succinate); the modified polyether polyol is modified polypropylene glycol; the polyurethane hot melt adhesive prepared by modifying 5-norbornene-2-methylamine with a strong polar bond-NH and 3, 7-dimethyl octyl-6-ene-1-alcohol containing an insect-proof and mildew-proof functional component with polyhydric alcohol has relatively low melting temperature and viscosity, has initial viscous force of more than 1N and final viscous force of more than 5N at the same time, and has the characteristics of high temperature resistance, high temperature resistance, high temperature resistance and the like. The method can be well applied to paper-plastic compounding for low-temperature coating.

The invention discloses a synthesis method of 9-dichloromethylene-5-amino-benzonorbornene and an intermediate product, the synthesis method comprises the following steps: firstly, synthesizing a cyclization compound 1 as shown in a formula 1 from a cold solution of 6, 6-dichlorofulvene and 1, 4-benzoquinone under the action of a solution of a catalyst I, carrying out oximation reaction on the cyclization compound 1 prepared in the step a and hydroxylamine salt under an alkaline condition, and carrying out post-treatment to obtain the 9-dichloromethylene-5-amino-benzonorbornene. Under the action of a catalyst II, adding the oximate 2 prepared in the step b into a closed container, carrying out hydrogenation reduction to obtain 9-dichloromethylene-5-amino-benzo norbornene, and directly treating the reduction product with acid to obtain 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene, namely the 9-dichloromethylene-5-amino-benzo norbornene. According to the method, the cyclization compound is oximated firstly, then the residual carbonyl and two double bonds on the ring are subjected to one-step reduction through catalytic hydrogenation, the working procedure is optimized, meanwhile, reduction by using expensive sodium borohydride is avoided, the method is short in synthesis route and suitable for industrialization, and the production cost is reduced.

The invention provides a phosphorus-nitrogen coordinated metallocene compound and a preparation method and application thereof, the compound has a structure as shown in a formula I: in the formula I, M is selected from IVB group metals in the periodic table of elements; r1 is selected from hydrogen, halogen, C1-C10 direct or branched alkyl, and C1-C3 alkoxy; r2 is selected from hydrogen and C1-C6 straight chain or branched chain alkyl; y is selected from chlorine, C1-C3 alkyl substituted or unsubstituted by trimethylsilyl, and amino substituted by trimethylsilyl. The phosphorus-nitrogen coordinated metallocene compound provided by the invention has relatively high thermal stability, catalytic activity and comonomer insertion rate, and can realize high-temperature solution polymerization of ethylene and norbornene.

Provided is a polymer that is capable of forming a resin film having high-heat resistance and low film stress, and that contains a structural unit derived from norbornene or a derivative thereof.　This block copolymer has a block A and a block B. In the block copolymer, structural units represented by at least any chemical formula selected from the group consisting of general formulae (1-1), (1-2), and (1-3) account for greater than 50 mol% of all of the structural units in the block A. Additionally in the block copolymer, structural units represented by general formula (2) account for greater than 50 mol% of all of the structural units in the block B.

This invention relates to the field of functional textile materials technology, and discloses a fluorine-free waterproof fabric and its preparation process. The fluorine-free waterproof fabric is composed of a host-guest inclusion crosslinking type organosilicon synergistic film-forming agent, an organic small molecule film-forming component, a crosslinking promoter, a dispersant stabilizer, a softening agent, and a solvent. The host-guest inclusion crosslinking type organosilicon synergistic film-forming agent is prepared by forming a host-guest inclusion structure with β-cyclodextrin and adamantane carboxylic acid, followed by reactive modification with 3-isocyanate propyltriethoxysilane. The organic small molecule film-forming component is norbornene-2-carboxylic acid. Through host-guest inclusion, crosslinking, and organic small molecule synergistic film formation, a stable and dense fluorine-free waterproof functional layer is formed on the fabric surface. This invention significantly improves waterproof performance and its washability and abrasion resistance without using fluorine-containing compounds, while also maintaining the soft hand feel of the fabric, demonstrating good environmental friendliness and application prospects.

The invention relates to the technical field of olefin catalyst polymerization, in particular to a preparation method of ethylene propylene diene monomer. The method comprises the following steps: carrying out anhydrous oxygen operation treatment on a polymerization reaction kettle by using a vacuum-gas raw material replacement method, introducing a gas raw material prepared in proportion into the polymerization reaction kettle to achieve the required polymerization original pressure, continuously introducing a main catalyst, a cocatalyst, a hexane solvent and ethylidene norbornene into the polymerization reaction kettle at the same time, starting a polymerization reaction; and introducing circulating cooling water into an outer jacket of the polymerization reaction kettle in the reaction process to maintain the stability of the polymerization reaction temperature, inactivating the polymerization system after the polymerization reaction is finished, removing the solvent, and drying to obtain the ethylene propylene rubber. The prepared ethylene propylene diene monomer is high in stability, the molecular mass of the product is controllable, and the molecular mass distribution is obviously narrowed.

The application discloses a Low-alpha silicon powder / benzocyclobutene chip packaging composite material, which comprises 55-60wt% of phosphonate-benzocyclobutene resin matrix, 35-40wt% of filler system and 3-5wt% of bismaleimide synergistic additive; the phosphonate-benzocyclobutene resin matrix is obtained through ring-opening metathesis polymerization of norbornene phosphonate imidazole monomer and co-curing of benzocyclobutene monomer; the filler system contains epoxy silane modified double-particle-size Low-alpha silicon powder and aluminum hypophosphite modified nano Mg(OH)2; the alpha emissivity of the epoxy silane modified double-particle-size Low-alpha silicon powder is <0.001 cph / (cm 2 ·h), U≤0.1ppm, Th≤0.2ppm. The dielectric constant of the obtained chip packaging composite material is ≤2.45@77GHz, the dielectric loss is <0.0016, and the interfacial bonding strength is ≥7.2MPa, so that the chip packaging composite material is suitable for vehicle 77GHz millimeter wave radar packaging and meets the requirements of high frequency, radiation resistance and high reliability.

The present disclosure belongs to the technical field of catalyst preparation, and provides a polynorbornene / carbon black-cross-linked three-dimensional network-immobilized bimetallic copper / gold (PNBI / CB-Cu / Au) nanocatalyst, and a preparation method and use thereof. Metallic copper and gold both exist in a form of nanoparticles in the catalyst and are uniformly dispersed, and further enhancing a catalytic performance. Moreover, the carrier is a polynorbornene / carbon black-cross-linked three-dimensional network, and a relative content of free hydroxyl groups in the catalyst is controlled by changing a monomer ratio to adjust a hydrophilic-lipophilic balance value of the catalyst, adapting to a reaction of an organic phase with an aqueous phase. Furthermore, the catalyst is insoluble in conventional solvents, and has a desirable effect in immobilizing nanoscale metallic copper, prolonging a service life of the catalyst.

The invention discloses an ultra-microporous branched polyaryl piperidinyl anion exchange membrane material as well as a preparation method and application thereof, and relates to the field of anion exchange membrane materials for producing hydrogen by electrolyzing water. According to the ultra-microporous branched polyaryl piperidinyl anion exchange membrane material, a four-functionality branching agent with a structure shown in a formula I is introduced into a polymer structural unit of polyterphenyl piperidone, and a polyaryl piperidinyl compound with a four-branch norbornene bis-benzocyclobutane structure is formed. By adopting the technical scheme, the structural rigidity of a polymer skeleton is improved, the formation of a large number of ultra-microporous structures is promoted, the ionic conductivity of the membrane material is effectively improved, and meanwhile, the problem of relatively poor dimensional stability caused by excessive water absorption of the membrane material is solved; the prepared anion exchange membrane has a wide application prospect in the field of hydrogen production by water electrolysis.

The invention discloses and requests to protect a preparation method of high-purity norbornene alkyl silyl ether. Specifically, the invention discloses and requests to protect an industrial-scale preparation method of high-purity norbornene methyl silyl ether. The high purity monomers prepared according to the methods of the present invention can be used in a variety of applications, including but not limited to the preparation of high quality, high purity polynorbornene that can be used in a variety of electronics and other various applications.

This invention provides a resin that combines high refractive index, high heat resistance, and low birefringence. The cyclic olefin copolymer hydride of this invention is formed by hydrogenating a cyclic olefin copolymer, wherein the cyclic olefin copolymer comprises structural units from 1-naphthylnorbornene and structural units from 2-naphthylnorbornene, and the average internal bulk ratio of 1-naphthylnorbornene to 2-naphthylnorbornene is 50 mol% or more. The cyclic olefin copolymer hydride of this invention is preferably used as a material for optical components such as optical lenses.

The invention relates to the technical field of engineering plastics, and discloses a polydicyclopentadiene / carbon fiber felt composite material and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing nanoparticles and norbornene dicarboxylic acid in a methanol solution to prepare a dispersion liquid; immersing the carboxylated modified carbon fiber felt into the dispersion liquid to obtain a modified carbon fiber felt; and mixing dicyclopentadiene, ethylidene norbornene and a Grubbs second-generation catalyst, immersing the mixture into the modified carbon fiber felt, and carrying out hot-pressing curing molding to obtain the composite material. By constructing an HCFF-NPA-PDCPD covalent interface system, a synergistic modification strategy of a physical effect (NP increases the surface roughness and provides reaction sites) and chemical bonding (NDA serves as a bridge to connect fibers and a matrix) is realized; the production process of the obtained composite material has the characteristic of being green and environment-friendly, waste water, waste gas or dust emission is avoided, the energy consumption is relatively low, and the requirement of the modern industry for sustainable development is met.

The invention relates to an anti-precipitation BOPP white label film and a preparation method thereof, and belongs to the technical field of label films. The anti-precipitation BOPP white label film comprises a printable surface layer, an upper secondary surface layer, a core layer, a lower secondary surface layer and a tackifying gluing surface layer which are arranged in sequence, the printable surface layer comprises polypropylene random copolymer and 3-7wt% of vinyl alcohol grafted propylene-benzo norbornene copolymer; each of the upper secondary surface layer and the lower secondary surface layer comprises homo-polypropylene, 1-3wt% of vinyl alcohol grafted homo-polypropylene and 1-5wt% of titanium dioxide white master batch; the core layer comprises homo-polypropylene and 28-38wt% of calcium carbonate master batch; the tackifying gluing surface layer is prepared from homo-polypropylene and 5 to 10 weight percent of saponified ethylene-vinyl acetate copolymer. According to the anti-precipitation BOPP white label film, the film can have certain antistatic performance without adding an antistatic agent, the printable surface layer is high in surface tension and good in durability, and the tackifying gluing surface layer is good in gluing performance.

The invention discloses a preparation method of a 3-substituted-2, 3 '-bisindole compound, and belongs to the field of organic synthesis. According to the method, 3-iodoindole with indole N-H protected by p-toluenesulfonyl and olefin are used as initial raw materials and are stirred to react in an organic solvent at 60-120 DEG C under the action of a palladium catalyst, norbornene, a phosphine ligand, an accelerant and alkali, and the 3-substituted-2, 3 '-bisindole compound can be obtained. The raw materials used in the method are cheap and easy to obtain, the reaction process is mild, the substrate universality is good, and the method has high step economy and practicability.

The application belongs to the technical field of high-frequency high-speed materials for electronic packaging, and particularly relates to a low-dielectric acenyl copolymer resin for M9 copper-clad plate and an ATRP preparation method thereof. A two-step method is used for full-process ATRP active controlled polymerization, and the two-step method comprises the following steps: S1, a single-end active bromine end group is prepared on a norbornene macromolecular initiator by ATRP polymerization with 3-bromocyclohexene as an ATRP initiator, and the length and structure of the norbornene segment are controlled; and S2, ATRP controlled copolymerization of acenylene monomers and divinylbenzene crosslinking monomers is carried out through the norbornene macromolecular initiator to obtain an acenyl copolymer resin.

The invention provides a mono-titanocene metal complex, a catalyst composition, a propylene and 5-vinyl-2-norbornene copolymer and a preparation method, and the mono-titanocene metal complex has a structure as shown in a formula (I). The mono-titanocene metal catalytic system provided by the invention has the characteristic of high catalytic activity; and the propylene and 5-vinyl-2-norbornene copolymer with high molecular weight, narrow molecular weight distribution and high glass transition temperature can be prepared.

The invention discloses a modified polylactic acid fiber composition and application thereof, and the modified polylactic acid fiber composition comprises a biodegradable high polymer material and a compound nucleating agent, wherein the biodegradable high polymer material is prepared from poly (L-lactic acid) (PLLA), polyhydroxyalkanoate (PHA) and a PLLA-PHA block copolymer; the compound nucleating agent comprises a PLA (polylactic acid)-based compound component and a norbornene dicarboxylic acid complex TMX-2, and the mass ratio of the norbornene dicarboxylic acid complex TMX-2 to the PLA-based compound component is (0.02-0.6): 1. The PLLA, the PHA, the PLLA-PHA, the PDLA, the sb-PLA and the TMX-2 are compounded and synergistically influenced, so that three continuous phase network structures are formed in the blended fiber, and the fiber has high strength, high heat resistance and high flexibility.

The invention provides a production method and system of tetracyclododecene. The production method comprises the following steps: feeding a norbornene solution of dicyclopentadiene and gasified norbornene into a spray reactor, and reacting in the spray reactor to obtain a reaction product; the molar ratio of the norbornene to the dicyclopentadiene is (5-9): 1; buffering and depressurizing the reaction product to obtain reaction product liquid; and rectifying the reaction product liquid to respectively obtain norbornene and tetracyclododecene. The invention also provides a production system of tetracyclododecene. According to the production method, the spray reactor is used for reaction, so that the rate of converting the DCPD into the TCD can be remarkably improved, and the conversion rate of the DCPD and the selectivity of the TCD are improved.

The invention provides a transition metal catalyst and a preparation method thereof, an olefin polymerization catalyst composition and application, and belongs to the technical field of polyolefin catalysts. The transition metal catalyst is an imine-amide type transition metal compound, the structural formula of the transition metal compound is shown in the specification, and R1-R9 are respectively and independently hydrogen, alkyl groups or aryl groups; and M is an IVB-IIB group transition metal atom. The transition metal compound provided by the invention can form a double-chain structure with activity, the catalyst composition is used for copolymerization of ethylene and norbornene, the problems of poor thermal stability, insufficient selectivity, wide molecular weight distribution of polymers and the like can be solved, and cycloolefin polymers with narrow molecular weight distribution and excellent mechanical properties are prepared.

The present application relates to high refractive index material preparation technical field, particularly to a kind of high refractive index, colorless transparent titanium dioxide / cycloolefin copolymer composite preparation method.The preparation method includes the following steps: under the condition of anhydrous oxygen-free, monomer HBM is dissolved with the functional reaction site-containing norbornene derivative in solvent, catalyst is added to carry out reaction, and termination reaction is obtained cycloolefin copolymer;Cycloolefin copolymer is dissolved in solvent, and hydrolysis condensation reaction is carried out by adding tetrabutyl titanate, and titanium dioxide / cycloolefin copolymer composite material is obtained;The structural formula of monomer HBM is as shown below:;The structural formula of functional reaction site-containing norbornene derivative is at least one of the following structural formula M1~M4:。The refractive index of the titanium dioxide / cycloolefin copolymer composite material is between 1.578~1.701, excellent light transmittance is shown at 589 nm and has high glass transition temperature.

The invention discloses a production method of a hexafluorophosphate product, the hexafluorophosphate product is 2-(inner-5-norbornene-2, 3-dicarboximide)-1, 1, 3, 3-tetramethylurea hexafluorophosphate, the first-step reaction of the invention comprises the following steps: preparing an intermediate from norbornene dianhydride as a raw material and a hydroxylamine compound under the action of organic alkali; in the second-step reaction, the intermediate and TCFH are subjected to a nucleophilic substitution reaction under the action of an alkaline metal catalyst to obtain a crude product, and the crude product is purified to obtain a target product; the synthesis route used in the invention is simple, special high temperature or high pressure is not needed in the reaction process, and the used catalyst is a conventional raw material which is low in price and easy to obtain; according to the method, the purity of the product can be increased to 99.8% or above, the total yield is stabilized to be 85% or above, in addition, the reaction route greatly reduces side reactions, and by-products in the product are few in variety and low in content.

The application discloses a kind of functional polyether, polydicyclopentadiene composite material and its preparation method.Functional polyether with end group being norbornene structure is directly mixed with DCPD, filler and auxiliary agent, then segmented polymerization is carried out, the toughness and low temperature performance of matrix are fundamentally improved, meanwhile, the introduction of functional polyether effectively improves the dispersity and interface effect of filler in matrix, to achieve the purpose of reinforcing and toughening polydicyclopentadiene composite material;Meanwhile, the functional groups on the side chain of polyether make the obtained polydicyclopentadiene composite material have higher heat resistance, aging resistance, flame resistance and antibacterial property.The method has low production cost, short production cycle, simple preparation method, and the modified polydicyclopentadiene composite material meets various engineering material and special material application scenarios.

The invention discloses a polymer brush with a nanoscale microphase separation structure, a polymer film and a preparation method of the polymer film, the polymer brush comprises a liquid crystal unit, and the preparation method comprises the following steps: reacting the liquid crystal unit with halogenated alcohol to prepare a liquid crystal side chain; reacting the liquid crystal side chain with norbornene dianhydride to prepare a liquid crystal monomer containing carboxyl at the tail end; reacting the liquid crystal monomer containing carboxyl at the tail end with fatty alcohol or difatty glyceride to obtain a block type liquid crystal monomer; and carrying out ring-opening metathesis reaction on the block type liquid crystal monomer under the action of a Grubbs catalyst to prepare the polymer brush. The introduction of the liquid crystal unit provides stronger driving force for microphase separation of the brush polymer, so that the nanoscale microphase separation structure can be directly obtained through an annealing process under the condition of not adding any guide layer.