520 results about "Cyclic Olefins" patented technology

The present invention belongs to the technical field of polymer films, and specifically relates to a polypropylene film for lithium battery current collector and a preparation method thereof. The polypropylene film comprises an upper layer, an intermediate layer and a lower layer; by weight, the components of the upper layer and the lower layer each comprise 70-80 parts of isotactic polypropylene and 20-25 parts of modified polystyrene; the components of the intermediate layer comprise 80-85 parts of isotactic polypropylene and 15-20 parts of cycloolefin copolymer; firstly, the components of the upper layer, the intermediate layer and the lower layer are uniformly mixed, and then the main machine and the auxiliary machine of a three-layer co-extrusion casting machine are added for melt extrusion to obtain a polypropylene film; then, the polypropylene film is subjected to biaxial stretching to obtain a polypropylene film; the obtained composite polypropylene film has good mechanical properties and dielectric properties, high thermal stability, and is more suitable for lithium battery current collectors.

The invention discloses a polypropylene film for a bidirectional asynchronous stretching high-temperature-resistant three-layer structure capacitor and a preparation method of the polypropylene film. The film comprises a first surface layer, a second surface layer and a middle layer clamped between the two surface layers, the middle layer is made of polypropylene, the first surface layer is made of a cycloolefin copolymer (COC), and the second surface layer is made of polypropylene; the mass of the middle layer accounts for 85wt%-88wt% of the total mass, the mass of the first surface layer accounts for 5wt%-7wt% of the total mass, and the mass of the second surface layer accounts for 7wt%-8wt% of the total mass. The temperature resistance can be effectively improved by utilizing the characteristics of the cycloolefin copolymer, the film-forming property is improved by controlling the proportion content of the cycloolefin copolymer, the temperature resistance of the film can be improved to 125 DEG C or above, and the temperature resistance of the film is greatly improved. When the COC content is controlled to be 5%-7%, the film-forming property and the temperature resistance can be both considered, and the temperature reaches 125 DEG C.

The invention discloses a polypropylene film for a film capacitor, the polypropylene film is composed of polypropylene and a cyclic olefin polymer, a plurality of gaps are distributed in the film, the gaps are approximately annular on the cross section of the film, and the inner diameter of the approximately annular gaps is 20-120nm. The invention also provides a preparation method of the polypropylene film, which comprises the following specific steps: putting the polypropylene and the cyclic olefin polymer into an extruder, heating and melting; the melt is extruded through a T-shaped die head and attached to a piece casting roller through an air knife for piece casting, and the temperature of the piece casting roller is 85-95 DEG C; the method comprises the following steps: preheating a cast sheet, longitudinally stretching at the stretching rate of 4-7 times and at the temperature of 135-150 DEG C, preheating the longitudinally stretched sheet at the temperature of 145-160 DEG C, transversely stretching at the stretching rate of 7-10 times and at the stretching temperature of 165-180 DEG C, and then entering a shaping area at the temperature of 168 DEG C; and carrying out corona treatment, rolling, curing and slitting on the heat-set film to obtain the product. The polypropylene film has good high temperature resistance and high pressure resistance, and is suitable for the field of capacitors.

The invention discloses a batch processing technology of micro-fluidic chips, and relates to the technical field of chip processing. The method comprises the following steps: firstly, providing at least two layers of polymer coiled materials, namely a first coiled material for forming a micro-channel structure and a second coiled material for closing a micro-channel, the coiled materials are continuous coiled materials selected from polyethylene glycol terephthalate (PET), cycloolefin polymer (COP), polycarbonate (PC) or polymethyl methacrylate (PMMA), and the coiled materials are continuous coiled materials selected from polyethylene glycol terephthalate (PET), cycloolefin polymer (COP), polycarbonate (PC) or polymethyl methacrylate (PMMA); the thickness of the coiled material is 50-500 microns; secondly, carrying out continuous compression molding processing on the surface of the first coiled material through a roll-to-roll processing platform; through a roll-to-roll continuous process, micro-channel mold pressing, functional deposition, precise alignment bonding and online cutting are integrated, high-efficiency, high-consistency and high-integration-level batch manufacturing of the micro-fluidic chip is realized, and manual intervention and production cost are remarkably reduced.

The invention provides a thermal slip temporary bonding adhesive and a preparation method and application thereof, and the thermal slip temporary bonding adhesive is prepared from the following raw materials in parts by weight: 50-70 parts of an organic solvent; 15 to 25 parts of basic resin; 10 to 21 parts of tackifying resin; 0.2 to 2 parts of an auxiliary agent; the basic resin comprises any one or a combination of at least two of a cycloolefin copolymer, a cycloolefin polymer and a cyclic block copolymer; the tackifying resin comprises low molecular weight polymer resin and other tackifying resin. The thermal slip temporary bonding adhesive provided by the invention has excellent chemical corrosion resistance and excellent bonding performance, is tightly combined with a wafer and a substrate, can well bond the wafer and the substrate together, and effectively prevents bonding pair defects; the temporary bonding adhesive is excellent in high temperature resistance, and can stably play a role without denaturation in the processing processes of wafer thinning and the like.

The invention relates to hybrid compositions comprising at least one cyclic olefin monomer composition: at least one resin composition polymerizable by addition or condensation polymerization; and, optionally, at least one additive. The invention also relates to articles of manufacture made from the hybrid compositions of the invention, and methods of making the articles. The invention also relates to coating compositions comprising the hybrid compositions of the invention, and to objects or substrates coated with the coating compositions of the invention, which may then be cured. The invention also relates to methods of coating the objects or substrates with the coating compositions of the invention. The invention further relates to the use of the hybrid compositions of the invention as adhesives.

The present invention relates to a polypropylene composition comprising a high isotactic homopolymer of propylene in a content from 70 to less than 95 wt.-%, a cyclic olefin polymer composition in a content from 5 to less than 30 wt.-%, and a nucleating agent in a content from 0.0000001 to 1 wt.-%. The present invention is, furthermore, directed to a cast film comprising the polypropylene composition and a biaxially oriented film comprising the polypropylene composition. Apart from that, a capacitor comprising the biaxially oriented film is provided.

A multilayer film having a first surface layer of a polyethylene or polypropylene polymer; a tear layer comprising from 70% to 95% by weight of a continuous phase polyethylene polymer and from 5% to 30% by weight of one or more dispersed phase olefin polymers selected from the group consisting of polybutylene, polypropylene, cycloolefin copolymers, EVOH and ionomers; and optionally a second surface layer of a polyethylene or polypropylene polymer. The multilayer film is oriented in the machine direction and is characterized by a ratio of transverse Elmandoff tear strength to longitudinal Elmandoff tear strength of greater than 10. A multilayer film may have a sealing layer added to form a laminate, and the laminate may be used to form a packaging product.

The invention discloses a high-temperature-resistant BOPP capacitor film and a preparation method and application thereof.The high-temperature-resistant BOPP capacitor film is prepared from polypropylene and organic semiconductor master batch, and the organic semiconductor master batch comprises a conjugated organic semiconductor polymer and a cyclic olefin polymer; the conjugated organic semiconductor polymer and the cyclic olefin polymer are added into the polypropylene to prepare the high-temperature-resistant BOPP capacitor film, the high-temperature-resistant BOPP capacitor film is used for preparing a thin-film capacitor, and the high-temperature-resistant performance of the thin-film capacitor can be remarkably improved.

To provide resin composition particles of a cyclic olefin copolymer having curability.SOLUTION: Resin composition particles include: a thermosetting cyclic olefin copolymer (A) having a crosslinkable group; and a radical initiator (B), the radical initiator (B) being contained within the resin composition particles.SELECTED DRAWING: None

The invention relates to a catalytic system for preparing a cycloolefin copolymer and application. The catalytic system comprises a main catalyst, a catalyst promoter and a chain transfer agent, the main catalyst is a silane-bridged fluorenyl amino dimethyl titanium complex, a silane-bridged fluorenyl amino dimethyl zirconium complex, a silane-bridged fluorenyl amino dimethyl hafnium complex or a silane-bridged fluorenyl amino hafnium dichloride complex; the auxiliary catalyst is a silane-bridged fluorenyl amino dimethyl titanium complex, a silane-bridged fluorenyl amino dimethyl zirconium complex, a silane-bridged fluorenyl amino dimethyl hafnium complex or a silane-bridged fluorenyl amino dimethyl hafnium complex; the cocatalyst is an aluminum compound or a boron compound; the chain transfer agent is more than one of second main / subgroup metal complexes; during application, the catalytic system is adopted, and cycloolefin and non-cyclic olefin are subjected to a copolymerization reaction under the catalytic action of the catalytic system to prepare the cycloolefin copolymer. According to the catalytic system disclosed by the invention, the consumption of expensive silane-bridged metal complexes is remarkably reduced, and powerful regulation and control on the molecular weight of a polymer are realized while high polymerization activity is maintained; the prepared cycloolefin copolymer has the advantages of adjustable molecular weight wide range, narrow molecular weight distribution, and controllable cycloolefin insertion rate and glass transition temperature.

The object of the present invention is to provide a cyclic olefin polymer having a high refractive index, a low Abbe number and a low birefringence, a method for producing the same, and an optical element using the cyclic olefin polymer. The cyclic olefin polymer of the present invention comprises structural units derived from a naphthyl-containing alicyclic compound (A) represented by the following formula (1) at a predetermined ratio [wherein R 2a ~R 5a One of the groups is naphthyl, and the remaining groups and R 1a As described in the specification] or its hydrogenated product.

The invention provides dicyclopentadiene phenol resin and a preparation method thereof, dicyclopentadiene phenol epoxy resin and a preparation method and application thereof. Compared with common dicyclopentadiene phenol resin, the dicyclopentadiene phenol resin has unsaturated cycloolefin active functional groups at the tail ends of molecular chains, so that the reactivity of the resin can be improved, and the application field of the dicyclopentadiene phenol resin is expanded.

The purpose of the present invention is to provide a cyclic olefin polymer resin foam sheet which maintains the stability of mechanical properties or thermal properties and achieves excellent light reflection properties and dielectric properties (low relative permittivity and low dielectric loss factor) and surface quality. The present invention obtains a cyclic olefin polymer resin foam sheet which comprises either a monomer of a cyclic olefin homopolymer (A) or a monomer of a cyclic olefin copolymer (B), or a mixture of the cyclic olefin homopolymer (A) and the cyclic olefin copolymer (B), and which has an average bubble diameter of 1-20 [mu] m. As a result, it is possible to obtain a cyclic olefin polymer resin foam sheet having excellent light reflection properties, dielectric properties (low relative dielectric constant, low dielectric loss factor) and surface quality.

The invention discloses a photoaging-resistant thermoplastic polyolefin waterproof coiled material which comprises the following raw materials: basic resin, the material proportion of the basic resin is about 65-75%, and the basic resin comprises high-crystallinity polypropylene, metallocene polyethylene and a cyclic olefin copolymer; the material proportion of the composite stabilizing material and the composite stabilizing agent is about 4-6%, and the composite stabilizing agent comprises a nano cerium oxide coated ultraviolet light absorber, a high molecular weight hindered amine light stabilizer, a novel benzotriazole / triazine hybrid stabilizing agent and a composite antioxidant; the material proportion of the functional filler is about 18-22%, and the functional filler comprises silane coupling agent modified nano kaolin, titanate treated calcium carbonate and graphene modified glass beads; and the material proportion of the special auxiliary agent is about 3-5%, and the special auxiliary agent comprises a hyperbranched polyester plasticizer, a phosphorus-nitrogen intumescent flame retardant and a fluorine surfactant. Compared with the prior art, the invention has the advantages of strong weatherability, high tensile strength and fracture resistance.

The invention discloses a preparation method of an ultralow-refractive-index and high-transparency cycloolefin copolymer, and belongs to the technical field of polymer preparation, the method comprises the following steps: in the presence of a Grubbs catalyst and an organic solvent, carrying out ring-opening metathesis polymerization reaction on a cycloolefin monomer and a fluorine-containing cycloolefin monomer to obtain the ultralow-refractive-index and high-transparency cycloolefin copolymer. The unsaturated fluorine-containing cycloolefin copolymer is prepared; and carrying out hydrogenation reaction on the unsaturated fluorine-containing cycloolefin copolymer and a hydrogen source to obtain the fluorine-containing cycloolefin copolymer. The fluorine-containing cycloolefin copolymer prepared by the method disclosed by the invention has the excellent properties of ultralow refractive index, high transparency, high thermal stability, excellent mechanical property, amorphous form and the like, and the refractive index is adjustable in a range of 1.37-1.47; the ultralow refractive index is far lower than that of the conventional typical organic low-refractive-index commercial material PMMA (the refractive index is 1.49). Therefore, the fluorine-containing cycloolefin copolymer prepared by the method can be widely applied to the optical field, such as low-refractive-index optical lenses (AR and VR glasses), anti-reflection coatings and the like.

Articles, such as adhesive articles, electronic articles, and abrasive articles, including compositions disposed on a substrate are described. The composition comprises i) a cyclic olefin; ii) a ring-opening metathesis polymerization catalyst; iii) a second polymerizable material; and iv) 10 an initiator for the second polymerizable material. The second polymerizable material is selected from the group consisting of: a) an epoxide-containing component; and b) a (meth) acrylate monomer. The (meth) acrylate monomer contains an alicyclic or heteroalicyclic group. The composition comprises greater than 25% by weight of i) and greater than 25% by weight of at least one of a) or b), based on the total of i) and iii). The cyclic olefin and / or the second polymerizable 15 material is at least partially cured. Compositions and methods are also described.

The invention discloses a composite material polypropylene film and a preparation method thereof, and belongs to the technical field of polymer modification and polymer films. The preparation method of the composite material polypropylene film comprises the following steps: blending 5-10 wt% of maleic anhydride grafted polypropylene (PP-g-MAH), 5-20 wt% of a cycloolefin copolymer or a cyclic block copolymer and 75-90 wt% of isotactic polypropylene, granulating, carrying out melt extrusion at 240-260 DEG C, and carrying out tape casting at 80-95 DEG C to form a sheet; preheating the sheet at the temperature of 145-170 DEG C, synchronously stretching at the temperature of 150-175 DEG C, carrying out heat setting at the temperature of 160-175 DEG C, and cooling; the composite material polypropylene film is prepared through the steps of extrusion, traction, corona treatment, rolling and the like. The composite material polypropylene film not only has good heat resistance and good dielectric strength at a high temperature, but also has a relatively high dielectric constant and relatively low dielectric loss, and is suitable for a film capacitor.

The invention relates to the technical field of photovoltaic packaging materials, and discloses a modified POE photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The modified POE photovoltaic packaging adhesive film is prepared from 60 to 100 parts of POE resin, 8 to 50 parts of barrier master batch, 0.5 to 2 parts of composite silane coupling agent, 0.5 to 1.5 parts of cross-linking agent and 0.2 to 2 parts of assistant cross-linking agent, the barrier master batch comprises 5-30 parts of polar functionalized grafted POE and 3-20 parts of a barrier agent; the blocking agent is a cycloolefin copolymer COC with Tg less than or equal to 120 DEG C. The modified POE photovoltaic packaging adhesive film has the advantages of high light transmittance, PID resistance and the like of the existing POE adhesive film, and also has high bonding strength and low water vapor transmittance to photovoltaic glass; the problems of adhesion, water resistance and light transmittance of the POE adhesive film are solved synergistically, the inherent processing compatibility problem between COC and a POE substrate is solved, and a foundation is laid for improving the long-term reliability of a photovoltaic module.

Embodiments are directed to a polyolefin elastomer comprising a polymerized reaction product of 50 mol% to 99.5 mol% ethylene and 0.5 mol% to 40 mol% cyclic olefin. The polyolefin elastomer comprises a glass transition temperature of -30 °C to 30 °C, as measured according to Differential Scanning Calorimetry and a weight average molecular weight of 50,000 g / mol to 500,000 g / mol, as measured according to conventional Gel Permeation Chromatography. Further embodiments are directed to laminates comprising the polyolefin elastomer.

A system for forming a blister package includes a thermoformable film and a lidding film. The thermoformable film has a thermoformable film exterior layer and a thermoformable film interior layer. The thermoformable film exterior layer includes at least 50% by weight polypropylene. The thermoformable film interior layer includes at least 50% by weight polypropylene and (a) a tackifier and / or (b) a cyclic olefin copolymer. The lidding film includes a lidding film exterior layer, a seal layer, and a lidding film interior layer between the lidding film exterior layer and the seal layer. The lidding film exterior layer includes at least 50% polypropylene. The lidding film interior layer includes at least 50% polypropylene and a tackifier. The seal layer includes a polyolefin plastomer.

The invention discloses a preparation method of a high-performance electric-breakdown-resistant capacitor base film, which comprises the following steps: S1, preparing modified polypropylene master batch: mixing polypropylene, a cycloolefin copolymer, a barium titanate-carbon nanotube modified composite filler and an antioxidant, and carrying out melt blending, extrusion and granulation to obtain the modified polypropylene master batch; s2, carrying out melt extrusion on the modified polypropylene master batch, cooling and casting; s3, carrying out two-way stretching and heat setting on the obtained casting piece to obtain a polypropylene film; and S4, performing plasma treatment on the surface of the polypropylene film to obtain the high-performance electric-breakdown-resistant capacitor base film. The high-performance electric-breakdown-resistant capacitor base film prepared by the method has excellent electric breakdown resistance, mechanical strength, flame retardance and heat resistance, has a long-acting flame retardant effect, is excellent in comprehensive performance and has a wide market application prospect.

Provided are: a thermosetting silicone resin composition that has excellent adhesion to a cyclic olefin resin substrate (I) and is capable of imparting properties such as scratch resistance thereto; a laminate in which the substrate (I), a cured coating layer (II) formed from the composition, and an inorganic substance layer (III) are sequentially laminated; and a production method therefor.　In said laminate, the cured coating layer (II) contains a reactive silicone resin (A), a polyfunctional (meth)acrylate monomer (B), and an organic peroxide (C), and contains 34-80 parts by weight of (A), 19-65 parts by weight of (B), and 0.5-10 parts by weight of (C) with respect to 100 parts by weight of the total of (A), (B), and (C). The number of (meth)acrylic moles in (B) per 100 g of the composition is 0.20-0.60. (A) is obtained by hydrolyzing and condensing an alkoxysilane of formula (i) and a compound containing an alkyl silicate of formula (ii) or a partial hydrolysate thereof. The laminate is such that [moles of Si derived from (ii)-component-containing compound / moles of Si derived from (i) component] with respect to 100 moles of the total Si content satisfies the range of 0.2-4.0.

The invention belongs to the technical field of special-shaped plug connectors, and discloses an injection molding method of a special-shaped plug connector, which comprises the following steps: selecting plastic raw materials of the special-shaped plug connector: the plastic raw materials comprise a base material, a reinforcing material, a plasticizer and a light stabilizer, the base material is polystyrene, the reinforcing material is glass fiber and carbon fiber, the plasticizer is a cycloolefin plasticizer, and the light stabilizer is a light stabilizer; the injection molding machine is filled with the plastic raw materials for melting, and the mold is designed to be the round water gap and arranged at the flowing position of the plastic through the cooperation of the round water gap, the exhaust channel, the pneumatic core-pulling mechanism and the demolding inclination, so that the appearance of a molded product is prevented from being influenced; the pneumatic core-pulling mechanism comprises an air cylinder, a piston, an air pipe and a valve, the temperature of cooling water of the injection mold is 20-30 DEG C, a pouring gate is a hot runner pouring gate, accumulation of cold materials can be reduced, waste can be reduced, the production efficiency is improved, the demolding inclination is 1-3 degrees, and mold clamping and damage of products are avoided.

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 present invention provides: a thermosetting silicone resin composition which has excellent adhesion to a cyclic olefin resin base material and is capable of imparting excellent pencil hardness; and a laminate which uses the thermosetting silicone resin composition.　The present invention specifically provides a thermosetting silicone resin composition which is used as a cured coating layer of a cyclic olefin resin base material, and which is characterized by containing: a reactive silicone resin (A) which contains, as a main component, a polyorganosilsesquioxane that is represented by general formula (1) [RSiO3 / 2]n (wherein R is an organic functional group that has a (meth)acryloyl group, and n is 8, 10 or 12) and has a cage structure in a structural unit; a polyfunctional (meth)acrylate monomer (B) that contains at least three (meth)acryloyl groups in each molecule; and an organic peroxide (C). The thermosetting silicone resin composition is also characterized in that: 24-80 parts by weight of the component (A), 19-75 parts by weight of the component (B), and 0.5-10 parts by weight of the component (C) are contained relative to a total of 100 parts by weight of the components (A), (B), and (C); and the total number of (meth)acrylic moles of the polyfunctional (meth)acrylate monomer (B) that contains at least three (meth)acryloyl groups in each molecule contained in 100 g of the composition is 0.20-0.75.

The present invention relates to the technical field of polypropylene roughening film, specifically a polypropylene capacitor film and a preparation method thereof, including the following process: melt extrusion of polypropylene particles, chilling casting, forming a sheet; then synchronous stretching, obtaining a polypropylene capacitor film; or hot pressing and melting of polypropylene particles, isothermal crystallization, cooling, forming a sheet; then biaxial stretching, obtaining a polypropylene capacitor film; the polypropylene particles include: by mass, 78 to 82 parts of polypropylene and 18 to 22 parts of cycloolefin polymer; cycloolefin polymer includes the following preparation components: 5-norbornene-2,3-dianhydride, amino-containing brominated benzocycloolefin and chlorosilane. The present invention enhances the heat resistance and mechanical properties of polypropylene through the compounding of polypropylene and cycloolefin polymer, improves the dielectric properties of polypropylene capacitor film, reduces its dependence on temperature, and enables it to maintain dielectric medium loss in high frequency regions.

To provide a system, information processing method, a machine learning device, an information processing device, a program, and a learned model for outputting a blending amount or optical characteristics of a reproduced cyclic olefin resin in a short time with high precision.SOLUTION: A system for processing information related to a resin composition including a reproduced cyclic olefin resin, comprises: a storage part which stores relation information obtained by associating blending information indicating a blending amount of the reproduced cyclic olefin resin in the resin composition with optical characteristic information indicating optical characteristics of the reproduced cyclic olefin resin; and an arithmetic part which outputs information associated by at least one piece of information and the relation information on the basis of the relation information, to an input of the at least one piece of information out of the blending information and the optical characteristic information.SELECTED DRAWING: Figure 1

The embodiment of the invention provides a resin composition as well as a preparation method and application thereof. The resin composition comprises the following components in percentage by mass: 30-60% of a cycloolefin polymer, 3-15% of an olefin polymer and / or a modified olefin polymer and 35-70% of filler, wherein the filler comprises a titanate filler and a non-titanate filler, the mass percent of the titanate filler is 10%-40%, the mass percent of the non-titanate filler is 0-40%, and the dielectric constant of the non-titanate filler is greater than 20. The resin composition provided by the embodiment of the invention has high dielectric constant, low dielectric loss and relatively high heat resistance and impact resistance, can be used as a dielectric material in the field of communication, and can meet the requirements of mechanical properties and heat resistance while improving the signal transmission efficiency.

The invention discloses a high-temperature-resistant capacitor base film and a preparation method thereof. The base film is prepared from the following raw materials in parts by weight: 100 parts of polypropylene, 15-23 parts of cycloolefin copolymer, 5-14 parts of filler A and 4-9 parts of filler B. The cycloolefin copolymer is added into the polypropylene, so that the high temperature resistance and mechanical property of the polypropylene can be remarkably improved, and the filler A and the filler B are compounded and added, so that the mechanical strength, dielectric constant and anti-breakdown strength of the polypropylene can be comprehensively improved, and the heat resistance of the polypropylene is further improved; moreover, inorganic fillers contained in the filler A and the filler B can be uniformly dispersed in the polypropylene, and meanwhile, the problem of compatibility between the cycloolefin copolymer and the polypropylene is well solved.