The present invention, in order to improve the performance and stability of a secondary battery, may provide an adhesive layer formed between a porous substrate and an electrode, and an adhesive layer composition comprising acrylic resin particles and inorganic particles for forming the adhesive layer, and may provide an acrylic aqueous dispersion as a raw material used in the preparation of the adhesive layer composition, wherein the acrylic aqueous dispersion comprises acrylic resin particles prepared from a monomer mixture comprising 50 wt% or more of a C4-C12 cycloalkyl (meth)acrylate and a linear or branched C6-C20 alkyl (meth)acrylate, and an additional monomer including a hydrophilic group-containing (meth)acrylate or a lipophilic monomer, and the acrylic resin particles have a magnesium ion content of 500 ppm or less.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
C09J 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
The present invention, in order to improve the performance and stability of a secondary battery, may provide an adhesive layer formed between a porous substrate and an electrode, and an adhesive layer composition comprising acrylic resin particles and inorganic particles for forming the adhesive layer, and may provide acrylic resin particles that are prepared from a monomer mixture comprising 50 wt% or more of a C4-C12 cycloalkyl (meth)acrylate and a linear or branched C6-C20 alkyl (meth)acrylate and included in the preparation of the adhesive layer composition as a raw material.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
C09J 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
SOGANG UNIVERSITY RESEARCH & BUSINESS DEVELOPMENT FOUNDATION (Republic of Korea)
Inventor
Ha, Kyoung-Su
Byun, Youngchang
Kim, Dong Hyeon
Kim, Hee Hwan
Kim, Juchan
Abstract
The present disclosure may provide a method for producing regenerated MMA from waste PMMA, the method comprising the steps of: subjecting waste PMMA to low-temperature plasma depolymerization in the presence of a zeolite-based solid acid catalyst; and obtaining regenerated MMA from the waste PMMA depolymerized product produced in the step of subjecting the waste PMMA to low-temperature plasma depolymerization.
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
C07C 67/333 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisationPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by change of size of the carbon skeleton
The present invention relates to a core-shell acrylic binder used for roof coating, and a manufacturing method therefor. The core-shell acrylic binder of the present invention is characterized in that a core part and a shell part have a specific glass transition temperature, and the core part and the shell part have a specific mass ratio. The core-shell acrylic binder may have excellent elongation, elasticity and durability, and may also have good antifouling properties. In particular, when forming a white-based roof coating layer vulnerable to contamination, a coating layer having an excellent appearance and improved antifouling properties can be formed.
C09D 151/06 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
The present invention relates to core-shell particles (or a core-shell particle-type binder), a composition comprising the core-shell particles (or the core-shell particle-type binder), or an electrode manufactured from the composition, the core-shell particles having a perfluorinated resin core, which comprises a perfluorinated polymer, and a resin shell layer, which comprises an acrylic polymer, wherein the core-shell particles are prepared by emulsion-polymerizing an acrylic monomer to the perfluorinated resin core by using, as an emulsifier, a polyethylene glycol ether having an alkyl group of C8 or greater, which is substituted with at least one alkyl of chemical formula 1, and the acrylic monomer comprises (a) methyl methacrylate (MMA), (b) methacrylic acid (MAA) or acrylic acid (AA), and (c) a C2-C6 alkyl (meth)acrylate.
The present disclosure may provide agglomerated core-shell particles having excellent flowability and excellent binder properties, enables preparation of an electrode mixture in which a fluorine-based resin is uniformly fibrillated due to excellent miscibility with an electrode active material, and may provide a secondary battery in which a dry electrode manufactured by a dry process by using the electrode mixture is not easily broken by external force, thereby maintaining excellent performance and long-term performance.
C08L 27/12 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogenCompositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
Acrylic elastomer particles according to one aspect of the present disclosure can enhance binder properties of fluorine-based resin particles, leading to the production of an electrode mixture having stronger binder properties to an electrode active material. A dry electrode manufactured comprising same is not easily broken due to excellent mechanical properties thereof, leading to the provision of a secondary battery with superb stability, excellent battery performance, and long-term maintenance of excellent battery performance.
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
8.
CORE-SHELL-TYPE FLUORINE-BASED RESIN PARTICLES HAVING IMPROVED FLOWABILITY AND FLOCCULATION, AND PREPARATION METHOD
A dispersion includes core-shell-type fluorine-based resin particles having improved flowability and cohesion properties. The particles, a mixture or slurry (dispersion) including the particles, and a preparation method for the particles, mixture, and slurry. The particles each have an acryl monomer added to a perfluorinated polymer particle dispersion so as to have a perfluorinated polymer core and an acrylic polymer shell.
The present disclosure provides an acrylic-urethane aqueous dispersion composition having excellent mixing stability and particularly excellent coating properties on a plastic material due to comprising an acrylic-based copolymer and polyurethane, and provides a coating layer having excellent coating properties, excellent water resistance, and excellent blocking resistance by using same, and a water-resistant article comprising same.
CORE-SHELL PARTICLE COMPRISING CORE AGGREGATE-TYPE CORE IN WHICH FLUORINE-BASED RESIN PARTICLES ARE AGGREGATED AND SHELL LAYER FORMED OF ACRYLIC RESIN PARTICLES, AND METHOD FOR PRODUCING SAME
The present disclosure relates to a new type of core-shell particle in which are formed an aggregate-type core formed by aggregating fluorine-based resin particles and a shell layer formed by closely aggregating acrylic resin particles, and a method for producing same, wherein, surprisingly, the core-shell particle not only has remarkably good flowability and excellent storage stability, but also has better binder properties than single polytetrafluoroethylene particles.
A binder includes composite particles with a polytetrafluoroethylene structure coated with an acrylic polymer. The binder can be for a lithium secondary battery according to one embodiment of the present invention, and not only can solve problems such as agglomeration that can occur when handling conventional binders, but also has excellent physical properties such as low thickness deviation and high tensile strength when manufacturing electrodes. In addition, a battery with these electrodes has improved performance, such as improved capacity retention rate.
C08F 259/08 - Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group on to polymers containing fluorine
An antistatic polymethyl (meth)acrylate-based resin composition, according to the present invention, can not only achieve remarkable antistatic properties and chemical resistance, but also maintain the excellent transparency of polymethyl (meth)acrylate-based resin, and as a result, an antistatic molded article produced comprising the composition can be utilized in cosmetic containers, automobile exterior materials, interior materials, and the like.
C08L 33/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
C08L 33/08 - Homopolymers or copolymers of acrylic acid esters
C08L 33/12 - Homopolymers or copolymers of methyl methacrylate
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
14.
BINDER FOR LITHIUM SECONDARY BATTERY AND ELECTRODE USING SAME FOR LITHIUM SECONDARY BATTERY
Provided is a binder for a lithium secondary battery, the binder comprising composite particles with a polytetrafluoroethylene structure coated with an acrylic polymer. A binder for a lithium secondary battery according to one embodiment of the present invention can solve problems, such as agglomeration that may occur during the handling of existing binders, while having excellent properties due to a low thickness variation during electrode manufacturing and high tensile strength thereof. In addition, batteries using such an electrode have improved battery performance
The present invention relates to an acrylic resin composition having excellent elongation and impact strength and an acrylic laminate film containing same. Specifically, due to comprising an acrylic copolymer having a three-layer structure and an elastic acrylic copolymer having a three-layer structure, the acrylic resin composition has significantly reduced stress whitening, greatly improved elongation and impact strength, and good optical properties and processability, and thus can be used to produce a film/sheet having a high-quality appearance.
C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
C08F 285/00 - Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
The present invention relates to a dispersion comprising core-shell-type fluorine-based resin particles having improved flowability and flocculation. Specifically, provided are particles, a mixture or slurry (dispersion) comprising same, and a preparation method therefor, the particles each having an acryl monomer added to a perfluorinated polymer particle dispersion so as to have a perfluorinated polymer core and an acrylic polymer shell.
C08F 259/08 - Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group on to polymers containing fluorine
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
chemical preparations for use in industry; catalysts for use in the manufacture of industrial chemicals; chemical additives for industrial purposes; polymer compositions for industrial purposes; meta acryl polymer; methacrylic acid; methyl esters; methyl ether; acrylic polymer powders; chemical additives for use in manufacture; polymer coating agents for paper; catalysts for use in the manufacture of polymers.
01 - Chemical and biological materials for industrial, scientific and agricultural use
Goods & Services
Chemical preparations for use in industry; catalysts for use in the manufacture of industrial chemicals; chemical additives for general industrial use in the manufacture of a wide variety of goods; polymer compositions for industrial purposes, used in the manufacture of industrial goods; unprocessed polymers, namely, methacrylic polymers; methacrylic acid; methyl esters; methyl ether; acrylic polymer powders; chemical additives for use in manufacture; polymer coating agents for paper; catalysts for use in the manufacture of polymers
