97 results about "Cyclo olefin polymer" patented technology

The invention discloses a composite optical film with a polarization function, a preparation method and application thereof. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer and an anti-reflection layer which are laminated on one side of the transparent substrate layer. Wherein the oriented calcite crystal layer is obtained by coating a superparamagnetic modified calcite crystal composite material suspension on the surface of the buffer layer, inducing optical axis oriented arrangement through a magnetic field and performing UV curing; the buffer layer is obtained by co-extruding a cycloolefin polymer and a polyurethane acrylate mixture, and a thermal expansion coefficient transition system is formed; the anti-reflection layer is composed of nano-porous titanium dioxide with the refractive index changing from 1.8 to 2.3 in a gradient mode, and a refractive index gradient structure is formed. According to the composite optical film, the polarization efficiency and the light transmittance of the composite optical film are improved and the industrial stability is improved through the design of the polarization functional layer in which the calcite nanocrystals are directionally arranged under the induction of a magnetic field and in combination with the gradient refractive index scattering layer.

The invention belongs to the technical field of chemical materials, and particularly relates to an anti-aging treatment process for a cycloolefin-based high polymer material. The cellulose crystal, the ethylene-butyl acrylate copolymer, the antioxidant 1010 and the antioxidant DLTP are specifically combined, so that the thermal decomposition speed of the polymer at high temperature is reduced, and the oxidation reaction of the cycloolefin polymer in the processing and using processes is inhibited; all the raw materials have a synergistic effect, the oxidation performance of the cycloolefin polymer is inhibited, and the anti-aging performance is improved. Therefore, the anti-aging agent provided by the invention can improve the anti-aging performance of the cycloolefin-based high polymer material, and can be used for preparing anti-aging products of the cycloolefin-based high polymer material.

A process for producing a film (A) has the following steps: - Producing a film (A) comprising at least one layer with 70 wt.% of one or more polypropylenes and between 10 wt.% and 30 wt.% of one or more cycloolefin polymers, and - Longitudinal stretching of the film (A) by means of a longitudinal stretching machine (16) with at least one pair of stretching rollers (40), wherein a main stretching gap (S1) is formed between the stretching rollers (40) of the at least one pair of stretching rollers (40), wherein the main stretching gap (S1) has a size of at least 30 mm. Furthermore, a system (10) for the production of a film (A) is shown.

The application discloses a high-opening transparent polyethylene film, which is prepared from the following raw materials: 100 parts by mass of linear low-density polyethylene, 0.025-0.055 parts by mass of a compounded opening agent, 0.05-0.20 parts by mass of a slip agent and 0.05-0.20 parts by mass of an antioxidant; the compounded opening agent is compounded from silane-modified silicon dioxide, hydrated magnesium silicate and a cyclic olefin polymer, the mass ratio of the silicon dioxide, the hydrated magnesium silicate and the cyclic olefin polymer is 1:1:2-3:3:1, the slip agent is erucic acid amide, and the melt mass flow rate of the cyclic olefin polymer at 230 DEG C and under a load of 2.16KG is 3-10 g / 10min. By compounding the three opening agents, the amount of the silicon dioxide used is greatly reduced compared with the prior art.

Layered polymer materials include a first layer including a first cyclic olefin polymer or a first cyclic olefin copolymer, a third layer including a second cyclic olefin polymer or a second cyclic olefin copolymer, and a second layer including an amphiphilic polymer having a hydrophilic component with a Hansen Solubility Parameter distance of 8 MPa1 / 2 or greater from oxygen gas, while at the same time having a hydrophobic component with a Hansen Solubility Parameter distance of 8 MPa1 / 2 or less from COC or COP. The second layer can be in contact with and be between the first layer and the third layer. The layered polymer material can be used to construct the body of a vial or a syringe. Methods of making the layered polymer material and kits containing the layered polymer material or containers having a body constructed from the layered polymer material are also described.

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 invention relates to a composition comprising 70 wt.-% to 95 wt.-% of a high isotactic propylene homopolymer, more than 2.5 wt.-% and less than 30 wt.-% of a cyclic olefin polymer composition and 0.1 wt.-% to 2.5 wt.-% of a random propylene copolymer solubilizer. The present invention also relates to a film comprising the polypropylene composition. Furthermore, a biaxially oriented film and a capacitor comprising the polypropylene composition are provided.

The invention discloses a cycloolefin polymer as well as a preparation method and application thereof. The cycloolefin polymer comprises a monomer component derived from a formula a and a formula b and a polymerized structural unit derived to a norbornene compound c. The hydride of the cycloolefin polymer is obtained by carrying out hydrogenation reaction on the cycloolefin polymer and hydrogen under the action of a hydrogenation catalyst. The cycloolefin copolymer and the hydride thereof provided by the invention simultaneously have high glass transition temperature, elongation at break and Young modulus, and can effectively relieve polymer chain orientation and stress concentration caused by the influence of a mold runner structure, injection pressure and the like, thereby reducing stress cracking of a finished product.

The problem to be solved by the present invention is to provide a battery module comprising: a battery cell laminate in which a plurality of battery cells are laminated; a pair of plate-like members provided at both ends of the battery cell laminate in the lamination direction; and a buffer material disposed between the plurality of battery cells and / or between the battery cell laminate and the plate-shaped member. Furthermore, the buffer material is provided with a wave-shaped plate spring in which concave parts and convex parts are alternately and continuously arranged and which extends in a predetermined direction. The corrugated leaf spring has a laminated structure in which layers containing glass fibers and layers containing epoxy resin are alternately laminated in the thickness direction, or a laminated structure in which layers containing glass fibers and / or epoxy resin are laminated in the thickness direction. A layer containing a styrene block copolymer or a cycloolefin polymer is present between the laminated layers.

The present invention provides a method for producing a thin film containing a cycloolefin polymer component by a continuous stretching method and an apparatus for the same purpose. [Solution] The method for producing a thin film (A) includes the steps of: producing a thin film (A) comprising at least one layer containing at least 70% by weight of one or more types of semicrystalline alphaolefin polymers and 10% to 30% by weight of one or more types of cycloolefin polymers; and stretching the thin film (A) in the longitudinal direction using a longitudinal stretching apparatus having at least one pair of stretching rollers (40) that form a main stretching gap (S1) of at least 30 mm in width between at least one pair of stretching rollers (40).

The invention relates to a vessel closure with a sealing element. The sealing element comprises a polymer composition. The polymer composition comprises at least 1 wt.-% of a cyclic olefin polymer. The oxygen transmission rate—OTR—of the polymer composition, determined according to DIN 53380, is at most 3000 cm3 m−2 d−1 bar−1.

This invention provides a method for preparing cyclic polyolefins, belonging to the technical field of preparing cyclic olefin polymers. The method includes: initiating ring-opening metathesis polymerization of cyclic olefin monomers using a catalyst; adding a polar monomer to obtain a mixture of linear block polymers and cyclic polymers; adding a quencher to quench the reaction; and separating to obtain the cyclic polyolefin; wherein the cyclic olefin monomer is selected as C. 5~20 The invention relates to an olefin containing carbon-carbon double bonds; the linear block polymer has polar blocks. By adding a polar monomer with a special structure after the ring-opening metathesis polymerization of a cyclic olefin, the two products can be easily separated in post-processing, yielding the target cyclic polyolefin.

The invention belongs to the technical field of functional membranes, and discloses a high-barrier membrane as well as a preparation method and application thereof. The high-barrier membrane comprises a first outer layer, a middle layer and a second outer layer which are sequentially arranged, wherein the first outer layer and the second outer layer comprise polypropylene, an initiator, an antioxidant, an ultraviolet light absorber and a light stabilizer; the intermediate layer contains a cycloolefin polymer, maleic anhydride, an antioxidant, an ultraviolet light absorber, and a light stabilizer. According to the diaphragm, an interlayer physical anchoring structure is formed through a co-extrusion process in combination with cooling calendering roller control, and the technical problems that in the prior art, interlayer combination is weak, and barrier property and mechanical property are contradictory are solved. The water vapor permeability of the high-barrier membrane is smaller than or equal to 0.1 g / (m.24h), the oxygen permeability is smaller than or equal to 0.1 cm / (m.24h. Atm), the tensile strength is larger than or equal to 30 MPa, the yellowing index delta b is smaller than or equal to 0.4, solvent resistance is excellent, and the high-barrier membrane is suitable for the field of medicine and food packaging.

The present invention discloses a composite optical film with polarization function, a preparation method, and its application. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer, and an anti-reflection layer stacked on one side of the transparent substrate layer. The oriented calcite crystal layer is obtained by coating a suspension of a superparamagnetic modified calcite crystal composite material on the surface of the buffer layer, inducing optical axis alignment through a magnetic field, and then UV curing. The buffer layer is obtained by co-extruding a mixture of a cycloolefin polymer and a polyurethane acrylate to form a transitional thermal expansion coefficient system. The anti-reflection layer is composed of nanoporous titanium dioxide with a refractive index gradient varying from 1.8 to 2.3, forming a refractive index gradient structure. The composite optical film is designed with a polarization function layer in which magnetic field-induced calcite nanocrystals are aligned, and combined with a gradient refractive index scattering layer, to improve the polarization efficiency and light transmittance of the composite optical film and enhance its industrial stability.

The invention provides a low-metal-residue cycloolefin polymer and a preparation method and application thereof, and the preparation method specifically comprises the following steps: (1) mixing a main catalyst, a cocatalyst and an organic solution to obtain a catalyst solution; (2) carrying out ring-opening polymerization reaction on the cycloolefin monomer solution and the catalyst solution, and after the ring-opening polymerization reaction is finished, carrying out hydrogenation reaction to obtain a cycloolefin polymer solution; and (3) adding an adsorbent, and separating to obtain the low-metal residual cycloolefin polymer. According to the adsorbent, hydrophobic groups are grafted on the surface of a molecular sieve, adsorption on polar molecules is reduced, polar metal impurities are preferentially captured, then a template in a pore channel of the molecular sieve is removed through absolute ethyl alcohol, sulfydryl and phenolic hydroxyl are grafted in the pore channel of the molecular sieve, double capture sites are provided, and a metal catalyst left in a cycloolefin polymer solution is chelated; the cycloolefin polymer which is deeply removed and purified can be applied to the field of medical packaging materials, and the safety can be improved.

The application relates to the technical field of high polymer materials, in particular to a hydrogenated cycloolefin polymer with high adhesion and high elongation and a preparation method thereof. The method comprises the following steps: performing a ROMP polymerization reaction on norbornadiene and a second cycloolefin in the presence of a solvent, a polymerization catalyst and a molecular weight regulator, obtaining a cycloolefin polymer solution after quenching; adding an oxidizing agent into the cycloolefin polymer solution to perform an opening ring oxidation reaction, and obtaining an intermediate after post-treatment; performing a hydrogenation reaction on the intermediate and hydrogen in the presence of a hydrogenation catalyst to obtain the hydrogenated cycloolefin polymer. The hydrogenated cycloolefin polymer provided by the application has higher elongation than conventional cycloolefin polymers, and has higher adhesion to glass and metal substrates.

The invention relates to the technical field of fused deposition 3D printing wire preparation, in particular to a cycloolefin polymer-based flexible printing wire material, a preparation method and a solar interface evaporator. The method comprises the following steps: catalyzing a cycloolefin monomer to generate olefin metathesis ring-opening polymerization reaction by utilizing a Grubby catalyst to form a cycloolefin polymer; under the action of a photoinitiator, a mixture formed by the cycloolefin polymer and a filling material is subjected to ultraviolet light curing, and a cycloolefin compound is obtained; and extruding the cycloolefin compound through a screw to prepare the cycloolefin polymer-based flexible printing wire material. By regulating the crosslinking density of the cycloolefin compound, on the basis of keeping flexibility, the mechanical property is improved, and the problem of contradiction between high elasticity and dimensional stability of a flexible device material is solved. The solar interface evaporator with high water evaporation efficiency is prepared by developing a cycloolefin polymer material capable of FDM printing and constructing a bionic gradient pore structure.

This invention discloses a transparent polyethylene film with stable frictional properties and its preparation method. The film is prepared from the following raw materials: 100 parts by weight of linear low-density polyethylene, 0.025-0.055 parts by weight of a compounded opening agent, 0.05-0.20 parts by weight of a slip agent, and 0.05-0.20 parts by weight of an antioxidant. The compounded opening agent is obtained by compounding silane-modified silica with a cyclic olefin polymer, and the mass ratio of silica to cyclic olefin polymer is 1:1 to 6:1. The slip agent is erucamide, and the melt flow rate of the cyclic olefin polymer at 230°C and 2.16 kg is 3 g / 10 min to 10 g / 10 min. By using two compounded opening agents, this invention significantly reduces the amount of silica used compared to the prior art using silica alone. At the same addition amount, it exhibits better opening and transparency compared to the prior art, and also has good friction coefficient stability.

The invention relates to the field of cycloolefin polymers, in particular to a cycloolefin polymer and a preparation method and application thereof.According to the cycloolefin polymer, structural units shown in a formula I, a formula II and a formula III jointly act at a specific molar ratio, so that the cycloolefin polymer has excellent optical performance, thermal stability and flexibility; especially, an elastomer unit with a cyclohexyl side group is introduced to a norbornene and derivative unit main chain, and a flexible aliphatic alkyl unit is introduced to a norbornene and derivative unit side chain multi-ring, so that the rigidity and flexibility adjustable range of the COP polymer is wide, the material flexibility is improved through the elastomer unit, and the rigidity and flexibility of the COP polymer are improved. And the internal stress of the material during molding is reduced, the brittleness is improved, the COP polymer is endowed with excellent mechanical properties, and meanwhile, the excellent optical properties and thermal stability of the cycloolefin polymer are also maintained.

The application belongs to the technical field of adhesives, and relates to a temporary bonding support material and a preparation method and application thereof. The temporary bonding support material is obtained by polymerization of a cyclic olefin monomer or polymerization of a cyclic olefin monomer and an olefin monomer. The cyclic olefin monomer has a structure shown in formula I, and the olefin monomer has a structure shown in formula II. The obtained cyclic olefin polymer obtained by polymerization of the specific monomers is selected as the main component of the temporary bonding support material. The rigid cyclic structure contained in the main chain of the cyclic olefin polymer can effectively limit the chain segment movement. The saturated carbon hydrogen main chain contained in the cyclic olefin polymer has a hydrophobic nature and a dense amorphous structure which can block the penetration of water molecules. The obtained temporary bonding support material has the characteristics of high modulus and high glass transition temperature at high temperature, and also has excellent water vapor resistance.

The application discloses a high-barrier cycloolefin polymer and a preparation method thereof. The high-barrier cycloolefin polymer has a structural unit shown in formula I. Compared with a commercially available cycloolefin polymer, the high-barrier cycloolefin polymer has obviously improved water and oxygen barrier rate, and meanwhile, the high-barrier cycloolefin polymer still has the advantages of high optical transmittance and high heat resistance of the cycloolefin polymer.

The present invention belongs to the technical field of cycloolefin polymer synthesis, and specifically relates to a method for preparing a terpolymer of norbornene, long-chain olefin, and methyl acrylate using a single titanocene catalyst. In a catalytic system in which a single titanocene catalyst-cocatalyst is present, norbornene forms a copolymer with methyl acrylate and a long-chain monomer via non-ring-opening addition. The single titanocene catalyst has the structural formula shown in Formula I, wherein R1 is hydrogen, or C1~C 10 A straight chain, branched or isomerized alkyl group, R2 is hydrogen, or C1~C 10 A linear, branched, or isomerized alkyl group; or, R1 is a methyl group or a phenyl group, and R2 is a methyl group or a phenyl group. The present invention utilizes a mono-titanium cyclopentadiene catalyst to catalyze the terpolymerization of norbornene, a long-chain olefin, and methyl acrylate, providing a reference for the catalytic synthesis of cycloolefin polymers. #imgabs0# Formula I

The application discloses a catalyst, a preparation method and application thereof, a hydrogenation method of a cyclic olefin polymer, and the polymer. The catalyst comprises a carrier and a nickel element supported on the carrier; the carrier comprises a base material and a light rare earth element; the base material is SiO2 and / or Al2O3; the proportion of the nickel element is 5wt.%-30wt.% based on the total mass of the catalyst; the proportion of the light rare earth element is 0.5wt.%-10wt.%; the proportion of the base material is 60wt.%-94.5wt.%; and the specific surface area of the catalyst is not less than 80m 2 / g. When the catalyst is used for hydrogenation of the cyclic olefin polymer, the catalyst has high activity, is easy to separate, has long service life, and can be recycled.

The present application relates to the technical field of olefin polymerization (IPC classification number is C08F210 / 02), and particularly relates to a preparation method of a catalyst and application of the catalyst in preparation of polar cyclic olefin polymers, the preparation method comprises the following steps: adding benzene series, pyridine, a nickel source and a ligand into a container, stirring and reacting at normal temperature, filtering after the reaction is completed, and freeze-drying the filtrate to obtain the catalyst, the weight ratio of the benzene series, the pyridine, the nickel source and the ligand is (0.1-0.4):(7-10):(0.7-1.0):(2.5-3.0). The prepared catalyst improves the polymerization activity on the basis of the prior art, the prepared polymer has high molecular weight and high comonomer insertion rate, the catalytic system has strong water and oxygen resistance, harsh material purification is not needed, oxygen and water are not needed to be removed in the polymerization process, and complex industrial equipment conditions are avoided.

The invention relates to a method for producing a film (A), comprising the following steps: generating a film (A) having at least one layer having 70 wt% of one or more polypropylene and 10 to 30 wt% of one or more cycloolefin polymers; and-longitudinally stretching the film (A) by means of a longitudinal stretching unit (16) having at least one pair of stretching rollers (40), a main stretching gap (S1) being formed between the stretching rollers (40) of the at least one pair of stretching rollers (40), the size of the main stretching gap (S1) being at least 30 mm. A system (10) for producing a film (A) is also shown.

An article of manufacture according to the present invention comprises a composition including a glycosaminoglycan, a local anesthetic, and a buffer packaged in a syringe or vial constructed from either glass or a plastic selected from the group consisting of cyclic olefin polymer, cyclic olefin copolymer, or high density non-nucleated polypropylene. The composition has unexpectedly improved stability on storage. The composition can be formulated for treatment of a urinary tract disease or condition, such as interstitial cystitis, also known as bladder pain syndrome or hypersensitive bladder syndrome.

The invention provides an antibacterial modified cycloolefin polymer, a preparation method thereof and a cycloolefin polymer antibacterial modified film, and the preparation method of the antibacterial modified cycloolefin polymer comprises the following steps: S1, carrying out group modification on the surface of a cycloolefin polymer to obtain a carboxyl modified polymer; s2, an antibacterial group is connected to the carboxyl modified polymer through a chemical means, the antibacterial group is provided by quaternary ammonium salt, and the antibacterial modified cycloolefin polymer is obtained. The preparation method comprises the following steps: treating the surfaces of cycloolefin polymer or derivative particles thereof through a strong oxide to obtain carboxyl groups, connecting antibacterial groups to the surfaces of the cycloolefin polymer or derivative particles in a chemical reaction manner under an acidic condition, and carrying out extrusion film blowing on the modified plastic particles by using a film blowing machine to obtain the antibacterial plastic particles. The cycloolefin polymer modified film with the antibacterial effect is obtained.

The present invention provides a resin composition for display elements that exhibits excellent coatability and whose cured product has excellent low dielectric properties and heat resistance. [Solution] A resin composition for a display element containing a curable resin and a photocationic polymerization initiator, wherein the curable resin comprises at least one selected from the group consisting of a cationic polymerizable compound having a vinyl group, a cationic polymerizable compound having an isopropenyl group, and a cationic polymerizable compound having a vinyl ether group, and the resin composition for the display element further comprises at least one polymer selected from the group consisting of hydrogenated petroleum resin and cycloolefin polymer, wherein the content of at least one polymer selected from the group consisting of hydrogenated petroleum resin and cycloolefin polymer in a total of 100 parts by mass of the curable resin and at least one polymer selected from the group consisting of hydrogenated petroleum resin and cycloolefin polymer is 5.1 parts by mass or more and 15.0 parts by mass or less.

The present invention relates to a composition comprising 83 wt.% to 87 wt.% of a polypropylene homopolymer and 13 wt.% to 17 wt.% of a cycloolefin polymer comprising cycloolefin units wherein the content of the cycloolefin units is in the range of 82 wt.% to 86 wt.%, based on the total weight of the cycloolefin polymer. Furthermore, the present invention relates to a film comprising the composition wherein the film may be a cast film or a biaxially oriented film. In addition, a capacitor including the biaxially oriented film is also provided.