Abstract

The present invention relates to equipment for preparing a polyolefin elastomer, and the equipment for preparing a polyolefin elastomer, according to the present invention, can comprise: a reactor to which a solvent and raw materials are supplied; a primary devolatilizer, which devolatilizes a product discharged from the reactor, so as to remove unreacted materials (a primary devolatilization recovery flow) and discharge the remainder thereof (a primary devolatilization preparation flow); a secondary devolatilizer, which re-devolatilizes the primary devolatilization preparation flow discharged from the primary devolatilizer, so as to further remove unreacted materials (a secondary devolatilization recovery flow) and discharge the remainder thereof (a secondary devolatilization preparation flow); a finisher, which uses water to scrub the secondary devolatilization preparation flow discharged from the secondary devolatilizer, so that unreacted materials and water are evaporated and a polymer product remains; and a flash drum for removing low-molecular-weight materials (an impurities removal flow) from the primary devolatilization recovery flow removed from the primary devolatilizer, and allowing the remainder to be recovered in the reactor.

IPC Classes  ?

• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• C08F 210/14 - Monomers containing five or more carbon atoms
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 6/00 - Post-polymerisation treatments

Abstract

The present invention relates to a technique for recovering a solvent and an unreacted material in an extruder (finisher) for a polyolefin elastomer (POE) preparation process, wherein the solvent and the unreacted material are maximally recovered with energy minimization through a recovery process of hydrocarbons (HCs) removed from a product in the extruder (finisher) for the POE preparation process, and thus are reused in the polyolefin elastomer preparation process.

IPC Classes  ?

• C08F 6/00 - Post-polymerisation treatments
• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

The present invention relates to a method for preparing a rubber composition which can improve physical properties of a final product. In order to achieve the purpose of the present invention, the present invention comprises a step of preparing a polymer-dispersed rubber composition in which a polymer is dispersed in a solution phase in rubber and provides a method for preparing a rubber composition, wherein the step of preparing a polymer-dispersed rubber composition comprises, after polymerization of a rubber composition containing a monomer, a solvent, and a catalyst in a rubber preparation processing step, collecting a residual monomer, and introducing a polymer to a remaining rubber solution from which the residual monomer has been collected. Application of the rubber composition thus prepared, to a tire tread composite can improve durability, grip properties, low balanced rotation resistance, thus achieving effects of excellent braking and fuel-efficient characteristics, and improving abrasive wear performance.

IPC Classes  ?

• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08F 6/00 - Post-polymerisation treatments
• C08L 21/00 - Compositions of unspecified rubbers
• C08L 23/22 - Copolymers of isobuteneButyl rubberHomopolymers or copolymers of other iso-olefins
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

The present invention relates to a solar energy conversion material with improved efficiency, and a solar cell comprising same. According to one embodiment of the present invention, the present invention provides a solar energy conversion material comprising an aluminum hydroxide precursor, and a lanthanide ion or a derivative containing same.

IPC Classes  ?

• H01L 31/0328 - Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups
• H01L 31/048 - Encapsulation of modules
• H01L 31/0216 - Coatings
• C09K 11/77 - Luminescent, e.g. electroluminescent, chemiluminescent, materials containing inorganic luminescent materials containing rare earth metals

Abstract

The present invention relates to a producing method for high-functional polybutene with a halogen component removed therefrom, a producing apparatus therefor, and polybutene produced thereby.

IPC Classes  ?

• C08F 10/08 - Butenes
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used
• C08F 4/12 - Metallic compounds other than hydrides and other than metallo-organic compoundsBoron halide or aluminium halide complexes with organic compounds containing oxygen of boron, aluminium, gallium, indium, thallium, or rare earths
• C08F 4/70 - Iron group metals, platinum group metals, or compounds thereof
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents

Abstract

The present invention relates to a method for producing polybutene containing a low halogen element and, more particularly, to a method for producing a non-reactive polybutene (polybutene having a vinylidene content of 40 wt.% or less at the alpha position) having a low chlorine content in a halogen element by adjusting the composition ratio of an aluminum chloride cocatalyst which is a catalyst of non-reactive polybutene such as water.

IPC Classes  ?

• C08F 10/10 - Isobutene
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 4/14 - Boron halides or aluminium halidesComplexes thereof with organic compounds containing oxygen
• C08F 2/01 - Processes of polymerisation characterised by special features of the polymerisation apparatus used

Abstract

When a solar energy conversion material manufactured on the basis of an inexpensive aluminum material, which has ultraviolet absorption and a visible light-emission spectrum, is positioned between a solar cell and an encapsulant on a front surface on which the light of the sun is incident, a down-conversion effect and a non-reflective coating effect are simultaneously induced so as to increase a light generation current, and thus photovoltaic conversion efficiency can be improved.

IPC Classes  ?

• H01L 31/032 - Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups
• H01L 31/0216 - Coatings
• H01L 31/048 - Encapsulation of modules

Abstract

The present invention relates to a polyolefin resin composition which has improved softness and is suitable for a power cable for transmission and distribution and, more specifically, to a polyolefin resin composition having excellent cold resistance characteristics, mechanical properties and insulation characteristics, and also having improved softness, and can be used as material for an insulation layer of an electric wire without cross-linking, thereby being recyclable.

IPC Classes  ?

• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• H01B 3/30 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins

Abstract

The present invention relates to an ethylene-propylene block copolymer resin which is suitable for an insulation layer of a power cable because of the excellent properties of flexibility, heat distortion, and brittleness temperature and good dielectric breakdown strength, and which exhibits production stability upon polymerization because of excellent fluidity of polypropylene powder in spite of high content of a rubber polymer. More particularly, the ethylene-propylene block copolymer resin according to an embodiment of the present invention is prepared as a propylene homopolymer or an ethylene-propylene random copolymer is stepwise polymerized, in a reactor, with an ethylene-propylene rubber copolymer in the presence of a Ziegler-Natta catalyst that is obtained using two kinds of internal electron donors, wherein one of the two kinds of internal electron donors is a compound comprising an ester group and an alkoxy group, the ethylene-propylene random copolymer has a melting point of 150-160℃, and contains 30-50 wt% of a solvent extract extracted with xylene at room temperature, the solvent extract having an intrinsic viscosity of 1.5-3.0 dl/g.

IPC Classes  ?

• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
• C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof
• C08F 4/645 - Component covered by group with a metal or compound covered by group , not provided for in a single group of groups
• C08F 4/649 - Catalysts containing a specific non-metal or metal-free compound organic
• C08F 4/646 - Catalysts comprising at least two different metals, in metallic form or as compounds thereof, in addition to the component covered by group
• C08F 4/659 - Component covered by group containing a transition metal-carbon bond
• H01B 3/44 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes vinyl resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes acrylic resins
• H01B 7/02 - Disposition of insulation
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers

Abstract

The present invention relates to an acid catalyst for a hydration reaction of n-butene and, more specifically, to a method for producing a heteropoly acid catalyst containing aluminum and cobalt as central elements, and to a method for producing 2-butanol from a hydration reaction of n-butene by using the catalyst.

IPC Classes  ?

• B01J 23/85 - Chromium, molybdenum, or tungsten
• B01J 23/75 - Cobalt
• B01J 21/04 - Alumina
• B01J 37/00 - Processes, in general, for preparing catalystsProcesses, in general, for activation of catalysts
• C07C 29/04 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
• C07C 31/12 - Monohydroxylic acyclic alcohols containing four carbon atoms

Abstract

The present invention relates to a polyethylene resin composition for a bottle cap, comprising 0.01 to 0.4 parts by weight of a slip agent relative to 100 parts by weight of a polyethylene resin, wherein the slip agent is an unsaturated fatty acid amide with an Acid index of 0.01 to 0.1 mgKOH / g, an Iodine index of 74 to 80 gI2 / 100 g, and an Amide purity of 99 to 100%, wherein as the odor and taste index thereof is less than or equal to 2.0, the triggering of unpleasant odors is minimized, and the static friction coefficient thereof is 0.25 or less, and thus the slip property is excellent.

IPC Classes  ?

• C08K 5/20 - Carboxylic acid amides
• C08L 23/06 - Polyethene
• C08F 10/02 - Ethene
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

The present invention relates to a method for ensuring the industrial safety of a particulate polyethylene polymer. The risk of dust explosions is significantly lowered by providing the particulate polyethylene polymer having a minimum ignition energy exceeding 1000 mJ, wherein the average particle size is 100-2000 ㎛ inclusive, and the components having a particle size of less than 50 ㎛ are present as less than 1 volume%.

IPC Classes  ?

• C08J 3/12 - Powdering or granulating
• C08L 23/04 - Homopolymers or copolymers of ethene
• C08F 10/02 - Ethene
• C08F 4/654 - Pretreating with metals or metal-containing compounds with magnesium or compounds thereof

Abstract

The present invention provides: a modified conjugated diene-based polymer having a high modification rate since a conjugated diene-based polymer modified through starting end modification, intermediate modification, termination end modification or a combination thereof is synthesized by using a styrene-based functional monomer of a specific structure capable of anion polymerization when polymerizing the conjugated diene-based polymer, and then an additional modifier is used as necessary; and a composition, which contains the modified conjugated diene-based polymer, using the modified conjugated diene-based polymer, thereby increasing affinity with an inorganic filler when compounding so as to improve dispersibility.

IPC Classes  ?

• C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
• C08F 2/04 - Polymerisation in solution
• C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

The present invention provides a modified diene-based polymer in which a functional monomer for converting an ester group into carboxylic acid or anhydride under heat or an acid catalyst is introduced to an end of a vinyl aromatic-conjugated diene-based copolymer, thereby enhancing compatibility and binding force with a hydroxyl group on a surface of an inorganic filler, leading to excellent affinity to the inorganic filler. The application of the modified conjugated diene-based copolymer, according to the present invention, to a tire material improves affinity with in the inorganic filler, thereby obtaining a low hysteresis loss, excellent wet skid balance, and favorable storage stability, which are characteristics required for a tire.

IPC Classes  ?

• C08C 19/28 - Reaction with compounds containing carbon-to-carbon unsaturated bonds
• C08F 236/04 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
• C08F 290/02 - Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
• C08F 8/46 - Reaction with unsaturated dicarboxylic acids or anhydrides thereof, e.g. maleinisation
• C08L 15/00 - Compositions of rubber derivatives
• C08K 3/36 - Silica
• C08K 3/04 - Carbon
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

The present invention relates to a high-stiffness polypropylene resin composition having excellent flowability, heat resistance and aesthetic appearance such as glossiness, transparency and the like, and to an ethylene-propylene block copolymer in which a propylene homopolymer and an ethylene-propylene rubber polymer are polymerized in phases. More specifically, the present invention relates to a high-stiffness polypropylene resin composition having excellent flowability, heat resistance and aesthetic appearance, the resin composition which comprises an organometallic nucleating agent and has the molecular weight distribution of a propylene homopolymer, an ethylene content of an ethylene-propylene block copolymer, an ethylene-propylene rubber content and the unique viscosity of the ethylene-propylene rubber adjusted in the presence of a Ziegler-Natta catalyst comprising a succinate-based internal electron donor.

IPC Classes  ?

• C08L 23/10 - Homopolymers or copolymers of propene
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers

Abstract

The present invention relates to a polypropylene resin composition. More specifically, the present invention relates to a polypropylene resin composition having excellent impact resistance and heat sealability, and particularly, being suitable for retort food packing by having an excellent appearance due to the low generation of an orange peel texture after retort sterilization, wherein the polypropylene resin composition contains an ethylene-propylene block copolymer obtained by polymerization of an ethylene-propylene rubber with a propylene homopolymer or an ethylene-propylene random copolymer.

IPC Classes  ?

• C08L 23/10 - Homopolymers or copolymers of propene
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
• C08F 299/00 - Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers

Abstract

Provided are a mono-modal polyethylene resin composition having superb machinability and flexural strength, as well as excellent environmental stress crack resistance (ESCR), and a molded product produced from the mono-modal polyethylene resin composition, the mono-modal polyethylene resin composition being a copolymer of ethylene and C6-C20 alpha-olefin, and characterized by having ESCR of ten hours or longer, spiral flow length of 70-130 cm, and flexural modulus (FM) of 9,000-12,000 kgf/cm2.

IPC Classes  ?

• C08L 23/08 - Copolymers of ethene
• C08L 23/18 - Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

The present invention relates to a multi-modal polyethylene resin composition having superb machinability and flexural strength, as well as excellent environmental stress crack resistance (ESCR), during production into molded products, and molded products produced from the composition, the polyethylene resin composition, the melt flow index of which is 0.6-2.0 g/10 minutes (2.16kg, 190 ºC), comprising 60-90 wt% ethylene homopolymer (A) having melt flow index of 700-1500 g/10 minutes (2.16kg, 190 ºC) and 10-40 wt% ethylene or C3-C20 α-olefin copolymer (B).

IPC Classes  ?

• C08L 23/08 - Copolymers of ethene
• C08L 23/14 - Copolymers of propene
• C08L 23/18 - Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

The present invention relates to a light-emitting element having increased light-emission efficiency by inducing an enhancement in light-emission intensity of various light-emitting materials introducible to the light-emitting element by using an anisotropic nanoparticle having a metal-dielectric core-shell structure. When an anisotropic metal nanoparticle-dielectric core-shell nanoparticle having an aspect ratio is used for an emission layer of the light-emitting element as in the present invention, two or more types of surface plasmon resonance bands of the anisotropic metal nanoparticle simultaneously induce excitation enhancement and emission enhancement of a light-emitting material, and a metal-dielectric core-shell nanostructure always separates the light-emitting material at a certain thickness of a dielectric shell, and thus an enhancement effect of a local electric field to be locally formed on the surface of the metal nanoparticle can be expected, thereby enabling a maximal increase in the light-emission intensity of the light-emitting material. In addition, a dielectric shell of an anisotropic metal nanoparticle-dielectric core-shell nanostructure maintains the shape and aspect ratio of the anisotropic metal nanoparticle inside the light-emitting element, in which a high heat is locally generated, and prevents the light-emitting material from being quenched by restricting the energy transition from an excited light-emitting material to the surface of the metal nanoparticle, thereby enabling the implementation of a light-emitting element having both improved light-emission efficiency and improved durability.

IPC Classes  ?

• H01L 33/50 - Wavelength conversion elements

Abstract

The present invention relates to a polypropylene resin for injection and a resin composition containing the same. The polypropylene resin of the present invention is a propylene-ethylene block copolymer resin in which an ethylene-propylene copolymer rubber having an ethylene content of 30-50 mol% is polymerized and dispersed in a propylene homopolymer, wherein the content of the ethylene-propylene copolymer rubber is 5-25 wt% of the total weight of the propylene-ethylene block copolymer resin. There are advantages of minimizing flow marks during injection and further improving mechanical stiffness and impact resistance when an injection molded product is prepared by using the polypropylene resin according to the present invention.

IPC Classes  ?

• C08L 23/12 - Polypropene
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08K 3/00 - Use of inorganic substances as compounding ingredients
• C08L 21/00 - Compositions of unspecified rubbers
• C08F 10/06 - Propene
• C08F 4/64 - Titanium, zirconium, hafnium, or compounds thereof

Abstract

The present invention relates to a polylactic acid-polyalkylene glycol copolymer having an excellent crystallization rate, and a composition containing the same. The polylactic acid-polyalkylene glycol copolymer of the present invention, prepared by melt-reacting polylactic acid with polyalkylene glycol of which a terminal has been modified with an epoxy group is environmentally friendly, facilitates injection molding, and has excellent thermal resistance, and thus is applicable to a variety of molded products requiring thermal resistance such as disposables, kitchen utensils, electric-electronic parts and automobile parts.

IPC Classes  ?

• C08G 63/18 - Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
• C08G 63/66 - Polyesters containing oxygen in the form of ether groups
• C08G 65/00 - Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

The present invention relates to a resin composition, a separation membrane for a secondary battery which is manufactured by using same, and a secondary battery which is applied with the separation membrane, and the resin composition of the present invention comprises: a photoinitiator for absorbing wavelengths in the range of 100~400nm; and a connecting material having two or more vinyl groups. In addition, the present invention provides a fine porous polymer separation membrane having excellent mechanical strength, heat resistance, and heat shrinkage by inducing a photocrosslinking through an exposure process after manufacturing a porous separation membrane through extrusion/annealing/drawing/heat setting by using the resin composition, and the present invention further provides a secondary battery which is applied with the separation membrane.

IPC Classes  ?

• H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material

Abstract

A polypropylene resin for a protective film according to the present invention has an ethylene content of 10-20 wt% in the polypropylene resin, wherein the ratio (a/b) of the ethylene content to an ethylene content in a solvent extract (b) is 3-4. The polypropylene resin has excellent release ability from an adhesive layer and exhibits a superior effect in reducing the occurrence of fish-eye defects. In addition, the protective film manufactured using the polypropylene resin can be applied for a protective film having fine surface unevenness for backlight unit optical sheets, such as a prism sheet, a micro-lens film, a patterned light guiding plate, and a diffusing plate, due to its excellent release ability and the reduction in the occurrence of fish-eye defects.

IPC Classes  ?

• C08F 10/06 - Propene
• C08F 210/16 - Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• C08L 23/10 - Homopolymers or copolymers of propene
• C08J 5/18 - Manufacture of films or sheets

Abstract

A polypropylene resin composition having excellent whitening resistance and impact resistance according to the present invention contains 75-95 wt% of an ethylene-propylene-alpha olefin random copolymer and 5-25 wt% of an ethylene-propylene block copolymer having an ethylene content of 20-50 wt%, wherein the intrinsic viscosity ratio of the ethylene-propylene-alpha olefin random copolymer to the ethylene-propylene block copolymer is 0.3-1. The polypropylene resin composition is highly effective in whitening resistance and impact resistance.

IPC Classes  ?

• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08F 210/06 - Propene
• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

The present invention relates to a polypropylene resin composition containing a polypropylene random-block copolymer and a method for preparing the same and, more specifically, to a polypropylene resin composition containing a polypropylene random-block copolymer, wherein the polypropylene random-block copolymer contains (a) 75-95 wt% of an alpha olefin-propylene random copolymer and (b) 5-25 wt% of an ethylene-propylene block copolymer, (a) the alpha olefin-propylene random copolymer and (b) the ethylene-propylene block copolymer being polymerized in stages within a reactor; and to a method for preparing the same. The polypropylene composition of the present invention can exhibit excellent impact resistance, transparency, and hinge characteristics.

IPC Classes  ?

• C08L 23/14 - Copolymers of propene
• C08L 23/16 - Ethene-propene or ethene-propene-diene copolymers
• C08F 297/08 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
• C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances

Abstract

The present invention relates to a microporous separation membrane using a polypropylene resin, and more specifically relates to a microporous polymer separation membrane produced using a polypropylene resin of which, at 230°C under 2.16 kg, the melt index is between 0.5-10g/10 min., the polydispersity index is at least 5 and the stereoregularity (isotactic index) is at least 94%.

IPC Classes  ?

• H01M 2/16 - Separators; Membranes; Diaphragms; Spacing elements characterised by the material