450 results about "Cyclic Olefins" patented technology

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 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 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 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 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.

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 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.

The application discloses a preparation method of a composite antioxidant and application thereof, and belongs to the field of high polymer materials. In the application, a ring octene and a silicon-containing cyclic olefin monomer are subjected to metathesis copolymerization under the action of a metathesis catalyst, a silicon-containing polymer is obtained after chemical hydrogenation, and then the composite antioxidant is obtained after hydrolysis and mixing with lignin. The main chain of the composite antioxidant is a saturated hydrocarbon chain, the compatibility with polyethylene is high, the silicon-containing polymer is hydrolyzed to generate active silanol, the active silanol is efficiently bonded with lignin, and the lignin provides natural polyphenol antioxidant function. The application realizes efficient antioxidant of the composite material, high compatibility and long-term durability, and provides a new idea for high-performance environment-friendly high polymer composite materials.

The application provides a polydicyclopentadiene / glass fiber felt composite material and a preparation method thereof. The method comprises the following steps: step (1): laying a glass fiber felt on a glass plate, sequentially laying a release cloth, a flow guide net and a vacuum bag, and performing vacuum pumping and pressure maintaining; step (2): pouring a cyclic olefin liquid into the vacuum bag in step (1), performing stage temperature rising and curing, and releasing a polydicyclopentadiene / glass fiber felt composite material. The cyclic olefin liquid is configured as follows: A1, uniformly mixing 100 parts by mass of DCPD and 5-20 parts by mass of a TCPD system to prepare a mixed solution; wherein the TCPD system comprises 10wt% of TCPD and 90wt% of DCPD; A2, dissolving 0.02-0.06 parts by mass of a Grubbs second-generation catalyst and 0.002-0.006 parts by mass of a retarder in 1-2 parts by mass of a high-boiling-point silane coupling agent, and adding the mixture into the mixed solution in step A1 to prepare a liquid. The method adopts a vacuum-assisted resin infusion molding (VARI) technology, has the characteristics of simple operation and rapid reaction, and the obtained composite material has high mechanical properties.

The invention relates to a method and device for preparing low-carbon olefins, and the method comprises the following steps: S1, contacting raw oil with a catalytic conversion catalyst in a catalytic conversion reactor for catalytic conversion reaction to obtain a catalytic conversion reaction product; s2, separating the catalytic conversion reaction product to obtain ethylene and propylene as well as a first circulating olefin flow containing butene and / or a second circulating olefin flow containing C5 + olefin; s3, enabling the olefin material to enter an etherification unit, and contacting the olefin material with an alcohol raw material under an etherification condition to obtain a circulating ether material and etherified olefin; and S4, enabling at least one part of etherified olefin to enter an isomerization unit, and carrying out isomerization reaction in the presence of an isomerization catalyst to obtain isomerized olefin. According to the method disclosed by the invention, the conversion of ethers into low-carbon olefins can be realized, the yield and selectivity of ethylene and propylene are improved, the yield of methane is reduced, the content of methanol in the product is reduced to the greatest extent, and the conversion of low-cost methanol into low-carbon olefins is realized.

Provided is an olefin-based heat-shrinkable multilayer film that is substantially free of a cyclic olefin-based resin, is easy to use for solvent bonding and gravity separation, and has excellent heat shrinkability and transparency.　The olefin-based heat-shrinkable multilayer film comprises a first surface layer and a second surface layer, which are derived from a polystyrene-based resin, and an intermediate layer derived from a polyolefin-based resin, wherein (a) the polystyrene-based resin contains at least 50 wt% of a styrene-butadiene copolymer, (b) the crystal melting enthalpy of the intermediate layer is set to a value of 135 mJ / mg or less, (c) the thermal shrinkage rate in the TD direction is 50-80% under the shrinkage conditions of 100°C and 10 seconds, (d) the haze value is 10% or less, and (e) the specific gravity is 0.95 or less.

A cyclic olefin copolymer includes a constituent unit (A) that is derived from an olefin monomer represented by Formula (1), and a constituent unit (B) that is derived from at least one cyclic olefin monomer selected from the group consisting of a cyclic olefin monomer represented by Formula (2) and a cyclic olefin monomer represented by Formula (3).

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 present invention addresses the problem of providing a method for producing a cyclic olefin copolymer, capable of suppressing generation of polyethylene-like impurities.　The present invention provides a method for producing a cyclic olefin copolymer, the production method involving addition polymerization of a norbornene monomer and ethylene, wherein the addition polymerization is performed under prescribed conditions in the presence of a borate compound, alkylaluminium, and a catalyst.

A resin composition comprising a cyclic olefin copolymer (A) and a fatty acid ester composition (B) comprising pentaerythritol (B-1) and a fatty acid ester (B-2) of pentaerythritol, the cyclic olefin copolymer (A) includes at least one olefin-derived repeating unit (a) represented by general formula (I), and at least one cyclic olefin monomer-derived repeating unit (b) selected from the group consisting of a repeating unit (AA) represented by general formula (II), a repeating unit (AB) represented by general formula (III), and a repeating unit (AC) represented by general formula (IV). When the total content of pentaerythritol (B-1) and the fatty acid ester (B-2) of pentaerythritol in the fatty acid ester composition (B) is taken as 100 mass%, the content of pentaerythritol (B-1) in the fatty acid ester composition (B) is 5.0 mass% or less.

To provide a composition for a clad from which an optical waveguide having improved thermal reliability can be obtained.SOLUTION: A composition for a core, which is usable in a clad of an optical waveguide, contains a cyclic olefin resin (A), and a phenol compound (B).SELECTED DRAWING: None

To provide a laminate that has easy tearability, and strength and barrier properties applicable to a packaging material; a packaging material; and a packaging bag including the same.SOLUTION: An easy-to-tear laminate 20 having barrier properties includes at least a substrate layer 10 and an inorganic vapor deposition layer 5, the substrate layer 10 including polyethylene and a cyclic olefinic resin.SELECTED DRAWING: Figure 1

Systems and processes for the production of circular products, including circular olefins and circular products derived from the circular olefins, by feeding particular hydrocarbons derived from one or more feed source to steam cracking and to fluid catalytic cracking and by sending the product of steam cracking and the product of fluid catalytic cracking to an integrated separation system. The circular olefins can be used in any downstream process to produce any circular product, such as a circular product produced through polymerization, oligomerization, or hydrogenation of the circular olefins.