WO2023189609A1 - 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 - Google Patents
樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 Download PDFInfo
- Publication number
- WO2023189609A1 WO2023189609A1 PCT/JP2023/010132 JP2023010132W WO2023189609A1 WO 2023189609 A1 WO2023189609 A1 WO 2023189609A1 JP 2023010132 W JP2023010132 W JP 2023010132W WO 2023189609 A1 WO2023189609 A1 WO 2023189609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin composition
- meth
- mass
- less
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0373—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement containing additives, e.g. fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1807—C7-(meth)acrylate, e.g. heptyl (meth)acrylate or benzyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
- C08G59/22—Di-epoxy compounds
- C08G59/24—Di-epoxy compounds carbocyclic
- C08G59/245—Di-epoxy compounds carbocyclic aromatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/102—Oxide or hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/02—Fillers; Particles; Fibers; Reinforcement materials
- H05K2201/0203—Fillers and particles
- H05K2201/0206—Materials
- H05K2201/0209—Inorganic, non-metallic particles
Definitions
- the present invention relates to a resin composition, an insulating resin cured product, a laminate, and a circuit board suitably used for manufacturing an insulating layer of a circuit board (metal-based circuit board).
- circuit boards have been put into practical use so far as circuit boards for mounting electronic and electrical components such as semiconductor elements to form hybrid integrated circuits.
- Circuit boards are classified into resin circuit boards, ceramic circuit boards, metal-based circuit boards, etc. based on the substrate material.
- resin circuit boards are inexpensive, their low thermal conductivity limits their use to applications that require relatively small amounts of power. Ceramic circuit boards are suitable for applications where relatively large amounts of power are used due to the characteristics of ceramics, such as high electrical insulation and heat resistance, but they have the disadvantage of being expensive. On the other hand, metal-based circuit boards have properties intermediate between the two, and are used for general-purpose applications that require relatively large amounts of power, such as refrigerator inverters, commercial air conditioning inverters, industrial robot power supplies, and automobiles. Suitable for applications such as power supplies.
- Patent Document 1 discloses that a circuit board composition that has a specific epoxy resin, a curing agent, and an inorganic filler as essential components is used to produce a circuit board that has excellent stress relaxation properties, heat resistance, moisture resistance, and heat dissipation properties. A method for obtaining the information is disclosed.
- ceramic circuit boards can be replaced with metal-based circuit boards, productivity can be expected to improve. Furthermore, ceramic circuit boards have the problem that solder cracks are likely to occur on the board during heat cycling, but by replacing it with a metal-based circuit board, it is expected that the occurrence of solder cracks will be suppressed. On the other hand, ceramic circuits are suitable for applications that require relatively large amounts of power, so when replacing ceramic circuit boards with metal-based circuit boards, metal-based circuit boards have insulation reliability (especially Improvements in insulation reliability under high-temperature conditions are required.
- an object of the present invention is to provide a resin composition capable of forming an insulating layer having excellent insulation reliability against application of high DC voltage under high temperature (150° C.) conditions.
- Another object of the present invention is to provide a cured insulating resin that is a cured product of the resin composition, a laminate and a circuit board using the cured insulating resin.
- a (meth)acrylic monomer unit B having a cationic group and a (meth)acrylic unit other than the (meth)acrylic monomer unit A and the (meth)acrylic monomer unit B.
- the content of the inorganic ion scavenger is 0.1 to 50 parts by mass based on 100 parts by mass of the thermosetting resin, and the content of the copolymer is The resin composition is present in an amount of 0.01 to 10 parts by mass based on 100 parts by mass of the inorganic filler.
- the resin composition according to (1), wherein the inorganic filler has a thermal conductivity of 20 W/m ⁇ K or more.
- the inorganic ion scavenger includes at least one selected from the group consisting of Al, Mg, Bi, Zr, Sb, Sn, Ti, and Zn, according to any one of (1) to (3).
- Resin composition (5) The resin composition according to any one of (1) to (4), wherein the inorganic ion scavenger has an average particle diameter of 0.05 to 10 ⁇ m.
- the resin composition according to any one of (1) to (6), which has a peak in the range of 2 ⁇ 11 to 15° in X-ray diffraction measurement.
- thermosetting resin is an epoxy resin.
- An insulating resin cured product which is a cured product of the resin composition according to any one of (1) to (8).
- 10 a first metal layer, an insulating layer disposed on one surface of the first metal layer, and a surface of the insulating layer opposite to the first metal layer; a second metal layer, wherein the insulating layer is the cured insulating resin according to (9).
- (11) A metal layer, an insulating layer disposed on one surface of the metal layer, and a metal circuit section disposed on a surface of the insulating layer opposite to the metal layer, A circuit board, wherein the insulating layer is the cured insulating resin according to (9).
- a resin composition capable of forming an insulating layer having excellent insulation reliability against application of a high DC voltage under high temperature (150° C.) conditions is provided.
- an insulating resin cured body which is a cured body of the resin composition, a laminate and a circuit board using the insulating resin cured body are provided.
- FIG. 2 is a cross-sectional view showing one embodiment of a laminate.
- FIG. 1 is a cross-sectional view showing one embodiment of a circuit board.
- One embodiment of the present invention is a resin composition containing a thermosetting resin, an inorganic filler, a copolymer, and an inorganic ion scavenger.
- thermosetting resins examples include silicone resins, epoxy resins, phenol resins, cyanate resins, melamine resins, urea resins, thermosetting polyimide resins, and unsaturated polyester resins.
- Thermosetting resins may include epoxy resins. Thermosetting resins can be used alone or in combination of two or more.
- the content of the thermosetting resin may be 10% by mass or more, 20% by mass or more, or 25% by mass or more based on the total mass of the resin composition, from the viewpoint of further improving insulation. From the viewpoint of improving thermal conductivity, the content of the thermosetting resin may be 50% by mass or less, 40% by mass or less, or 30% by mass or less based on the total mass of the resin composition.
- the inorganic filler may be, for example, a known inorganic filler used in applications requiring insulation and thermal conductivity (excluding those that fall under the category of inorganic ion scavengers described below).
- the inorganic filler may include, for example, one or more selected from the group consisting of aluminum oxide (alumina), silicon oxide, silicon nitride, boron nitride, aluminum nitride, and magnesium oxide, and may improve insulation reliability in a high humidity environment.
- the nitride may contain one or more selected from the group consisting of aluminum oxide, silicon oxide, silicon nitride, boron nitride, and aluminum nitride, and one selected from the group consisting of aluminum oxide, boron nitride, and aluminum nitride. It may include the above.
- the shape of the inorganic filler may be, for example, particulate, scaly, polygonal, or the like.
- the average particle diameter of the inorganic filler may be 0.05 ⁇ m or more, 0.1 ⁇ m or more, 5 ⁇ m or more, 10 ⁇ m or more, 20 ⁇ m or more, 30 ⁇ m or more, or 40 ⁇ m or more, from the viewpoint of improving thermal conductivity.
- the thickness may be 200 ⁇ m or less, 150 ⁇ m or less, 100 ⁇ m or less, 80 ⁇ m or less, 60 ⁇ m or less, or 40 ⁇ m or less.
- the average particle diameter of the inorganic filler means the d50 diameter in the volume-based particle size distribution of the inorganic filler.
- the volume-based particle size distribution of the inorganic filler is measured using a laser diffraction particle size distribution measuring device.
- the thermal conductivity of the inorganic filler may be 20 W/m K or more, 50 W/m K or more, 100 W/m K or more, or 150 W/m K or more, and 35000 W/m K or less, It may be 2000 W/m ⁇ K or less, 600 W/m ⁇ K or less, 300 W/m ⁇ K or less, or 200 W/m ⁇ K or less.
- the inorganic filler may contain two or more types of inorganic fillers having different average particle diameters.
- the inorganic filler may include a first inorganic filler having an average particle size of 25 ⁇ m or more and a second inorganic filler having an average particle size of 4 ⁇ m or less. According to such an inorganic filler, the gap between the first inorganic fillers is filled with the second inorganic filler, thereby increasing the packing density and contributing to improving thermal conductivity.
- the average particle diameter of the first inorganic filler may be 30 ⁇ m or more or 40 ⁇ m or more, or 200 ⁇ m or less or 150 ⁇ m or less.
- the average particle diameter of the second inorganic filler may be 3.5 ⁇ m or less or 3 ⁇ m or less, or 0.05 ⁇ m or more or 0.1 ⁇ m or more.
- the content of the inorganic filler is 30% by mass or more, 40% by mass or more, 50% by mass or more, or 60% by mass or more based on the total mass of the resin composition. Good too.
- the content of the inorganic filler is 80% by mass or less, 75% by mass or less, 70% by mass or less, or 65% by mass or less based on the total mass of the resin composition, from the viewpoint of further improving insulation properties.
- the content is preferably 65% by mass or less, from the viewpoint of obtaining a metal base substrate that has even better insulation reliability against high voltage under high temperature or high temperature and high humidity environments.
- the content of the inorganic filler is 20% by volume or more, 30% by volume or more, 40% by volume or more, 45% by volume or more, or 50% by volume with respect to the total volume of the resin composition. % or more.
- the content of the inorganic filler is 80% by volume or less, 70% by volume or less, 60% by volume or less, 55% by volume or less, or 50% by volume or less, based on the total volume of the resin composition.
- the amount may be less than 55% by volume, and is preferably less than 55% by volume from the viewpoint of obtaining a metal base substrate with even better insulation reliability against high voltage under high temperature or high temperature, high humidity environments.
- the content of the inorganic filler may be 20 to 80% by volume or 30 to 70% by volume based on the total volume of the resin composition.
- the copolymer consists of a (meth)acrylic monomer unit A having an anionic group (hereinafter also referred to as "unit A”, and a monomer providing unit A is also referred to as “monomer A”) and a cationic group.
- (meth)acrylic monomer unit B having a group hereinafter also referred to as “unit B”, and the monomer that provides unit B is also referred to as “monomer B”
- (meth)acrylic monomer unit A and (meth)acrylic monomer unit C other than (meth)acrylic monomer unit B hereinafter also referred to as "unit C"
- unit C the monomer that provides unit C is also referred to as "monomer C"
- the copolymer may have a (meth)acrylic monomer unit (unit X) having both an anionic group and a cationic group.
- unit X is deemed to fall under both unit A and unit B.
- a copolymer having units X is considered to have both units A and B.
- monomer means a monomer having a polymerizable group before polymerization.
- Monomeric unit means a structural unit derived from the monomer and constituting the copolymer.
- (Meth)acrylic monomer means a monomer having a (meth)acryloyl group.
- (Meth)acrylic monomer means an acrylic monomer and a methacrylic monomer corresponding thereto, and similar expressions such as “(meth)acryloyl group” have the same meaning.
- the copolymer each has one or more units A, B, and C.
- the copolymer may be a random copolymer or a block copolymer.
- Monomer A, monomer B, and monomer C may each be a monomer having one (meth)acryloyl group (monofunctional (meth)acrylic monomer), It may be a monomer having two or more (meth)acryloyl groups (a polyfunctional (meth)acrylic monomer), and preferably a monofunctional (meth)acrylic monomer.
- the anionic group that the unit A has is, for example, one or more types selected from the group consisting of a carboxyl group, a phosphoric acid group, a phenolic hydroxy group, and a sulfonic acid group. From the viewpoint of further improving the dispersibility of the inorganic filler, the anionic group is preferably one or more selected from the group consisting of a carboxyl group, a phosphoric acid group, and a phenolic hydroxy group.
- the unit A preferably further has an electron-withdrawing group bonded to the anionic group.
- the electron-withdrawing group has the effect of stabilizing the anion of the anionic group.
- the electron-withdrawing group include a halogen group (also referred to as a halogen group).
- the anionic group to which an electron-withdrawing group is bonded include a group in which a halogen group is bonded to the ⁇ -position carbon atom of a carboxyl group.
- Unit A does not need to have an electron-donating group bonded to an anionic group. Electron-donating groups may destabilize the anion of anionic groups. Examples of the electron-donating group include a methyl group.
- Examples of monomer A include acrylic acid, methacrylic acid, acid phosphoxypropyl methacrylate, acid phosphoxy polyoxyethylene glycol monomethacrylate, acid phosphoxy polyoxypropylene glycol monomethacrylate, phosphoric acid-modified epoxy acrylate, and 2-acryloyl.
- Examples include oxyethyl acid phosphate, 2-methacryloyloxyethyl acid phosphate, 4-hydroxyphenylacrylate, 4-hydroxyphenyl methacrylate, 2-methacryloyloxyethylsuccinic acid, 2-acrylamido-2-methylpropanesulfonic acid, and the like.
- monomer A is preferably acrylic acid, 2-methacryloyloxyethyl phosphate, 4-hydroxyphenyl methacrylate, and 2-acrylamido-2-methylpropanesulfonic acid.
- acrylic acid more preferably acrylic acid.
- the cationic group that unit B has is, for example, one or more types selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group, and a quaternary ammonium base.
- the cationic group is preferably a tertiary amino group from the viewpoint of further improving the dispersibility of the inorganic filler.
- the unit B preferably further has an electron-donating group bonded to the cationic group.
- the electron donating group has the effect of stabilizing the cation of the cationic group.
- Examples of the electron-donating group include a methyl group.
- Examples of the cationic group to which an electron-donating group is bonded include a group in which a methyl group is bonded to the ⁇ -position carbon atom of an amino group.
- Unit B does not need to have an electron-withdrawing group bonded to a cationic group.
- Electron-withdrawing groups may destabilize the cations of cationic groups. Examples of electron-withdrawing groups include carboxyl groups.
- Examples of monomer B include 1-aminoethyl acrylate, 1-aminopropyl acrylate, 1-aminoethyl methacrylate, 1-aminopropyl methacrylate, dimethylaminoethyl methacrylate, diethylaminoethyl methacrylate, t-butylaminoethyl (meth) Acrylate, dimethylaminoethyl methacrylate quaternary salt, 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, 2,2,6,6-tetramethyl-4-piperidyl methacrylate, dimethylaminoethyl acrylate benzyl chloride quaternary salt Examples include grade salt.
- monomer B is preferably 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate and 2,2,6,6-tetramethyl- One or more types selected from the group consisting of 4-piperidyl methacrylate, more preferably 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate.
- Unit C is a (meth)acrylic monomer containing neither a cationic group nor an anionic group.
- Unit C may have an amphipathic group, a hydrophobic group, or a hydrophilic group in addition to the (meth)acryloyl group.
- amphiphilic groups include oxyalkylene groups.
- the hydrophobic group include a siloxane group and a hydrocarbon group.
- the hydrophilic group include phosphoric acid ester groups. Note that the hydrocarbon group here does not include the methyl group that constitutes the methacryloyl group (hereinafter, the same applies to the hydrocarbon group in unit C).
- Unit C is one or more selected from the group consisting of oxyalkylene groups, siloxane groups, and hydrocarbon groups, from the viewpoint of affinity or compatibility between the copolymer and the resin when the resin composition further contains a resin. and more preferably one or more selected from the group consisting of siloxane groups and hydrocarbon groups.
- Examples of (meth)acrylic monomers having an oxyalkylene group include ethoxycarbonylmethyl (meth)acrylate, phenol ethylene oxide-modified (meth)acrylate, phenol (modified with 2 moles of ethylene oxide) (meth)acrylate, and phenol ( (meth)acrylate (modified with 4 moles of ethylene oxide), paracumylphenol (meth)acrylate modified with ethylene oxide, nonylphenol (modified with 4 moles of ethylene oxide) (meth)acrylate, nonylphenol (modified with 4 moles of ethylene oxide) (meth)acrylate, nonylphenol (8 moles of ethylene oxide) (modified) (meth)acrylate, nonylphenol (modified with 2.5 moles of propylene oxide) acrylate, 2-ethylhexylcarbitol (meth)acrylate, ethylene oxide-modified phthalic acid (meth)acrylate, ethylene oxide-modified succinic acid (meth)acrylate, and
- Examples of the (meth)acrylic monomer having a siloxane group include ⁇ -butyl- ⁇ -(3-methacryloxypropyl)polydimethylsiloxane.
- Examples of the (meth)acrylic monomer having a hydrocarbon group include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, Isooctyl (meth)acrylate, Isodecyl (meth)acrylate, Lauryl (meth)acrylate, Stearyl (meth)acrylate, Phenyl (meth)acrylate, Cyclohexyl (meth)acrylate, Dicyclopentanyl (meth)acrylate, Dicyclopentenyl (meth)acrylate ) acrylate, dicyclopentenyloxyethyl (meth)acrylate, isobornyl
- Examples of the (meth)acrylic monomer having a phosphate group include (meth)acryloyl oxyethyl dialkyl phosphate.
- the monomer C may be, for example, a (meth)acrylic monomer having a hydroxy group.
- (meth)acrylic monomers having a hydroxy group include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 3-hydroxypropyl (meth)acrylate, and 4-hydroxybutyl (meth)acrylate. ) acrylate, 2-hydroxy-3-phenoxypropyl (meth)acrylate, and 3-chloro-2-hydroxypropyl (meth)acrylate.
- Monomer C may be, for example, a (meth)acrylic monomer having an amide bond.
- (meth)acrylic monomers having an amide bond include N,N-dimethyl(meth)acrylamide, N,N-diethyl(meth)acrylamide, N-isopropyl(meth)acrylamide, and diacetone(meth)acrylamide.
- Acrylamide and acryloylmorpholine are mentioned.
- Monomer C may be, for example, a polyfunctional (meth)acrylic monomer.
- polyfunctional (meth)acrylic monomers include 1,3-butylene glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, and 1,6-hexadiol di(meth)acrylate.
- the content of unit A is 0.03 mol per 100 mol% of the total of unit A, unit B, and unit C (in other words, the total of all monomer units possessed by the copolymer. The same applies hereinafter).
- % or more 0.1 mol% or more, 0.5 mol% or more, 1 mol% or more, 2 mol% or more, 3 mol% or more, 4 mol% or more, or 5 mol% or more, and 70 mol % or less, 60 mol% or less, 50 mol% or less, 40 mol% or less, 30 mol% or less, 20 mol% or less, 15 mol% or less, 10 mol% or less, or 5 mol% or less.
- the content of unit A When the content of unit A is 0.03 mol% or more, the dispersibility of the inorganic filler tends to be further improved. When the content of unit A is 70 mol % or less, the viscosity of the resin composition tends to be further reduced and the handling properties of the resin composition are further improved.
- the content of unit B is 0.02 mol% or more, 0.05 mol% or more, 0.07 mol% or more, or 0.1 mol% or more with respect to the total 100 mol% of unit A, unit B, and unit C. It may be mol% or more, 20 mol% or less, 10 mol% or less, 5 mol% or less, 3 mol% or less, 1 mol% or less, 0.5 mol% or less, or 0.1 mol% or less. It's okay.
- the content of unit B is 0.02 mol% or more, the affinity of the copolymer for the inorganic filler tends to be better.
- the content of unit B is 20 mol % or less, the viscosity of the resin composition tends to be further reduced and the handling properties of the resin composition are further improved.
- the content of unit C is 10 mol% or more, 20 mol% or more, 30 mol% or more, 40 mol% or more, 50 mol% or more, with respect to the total 100 mol% of unit A, unit B, and unit C. It may be 60 mol% or more, 70 mol% or more, 80 mol% or more, 90 mol% or more, 92 mol% or more, or 94 mol% or more, and 99.8 mol% or less, 99 mol% or less, 98 mol% % or less, 97 mol% or less, 96 mol% or less, or 95 mol% or less.
- the content of unit C When the content of unit C is 10 mol % or more, the viscosity of the resin composition tends to be further reduced and the handling properties of the resin composition are further improved. When the content of unit C is 99.8 mol% or less, the affinity of the copolymer for the inorganic filler tends to be better.
- the total content of unit A and unit B is 0.05 mol% or more, 0.2 mol% or more, 1 mol% or more, 2 It may be mol% or more, 3 mol% or more, 4 mol% or more, or 5 mol% or more, and 90 mol% or less, 80 mol% or less, 70 mol% or less, 60 mol% or less, 50 mol% or less, It may be 40 mol% or less, 30 mol% or less, 20 mol% or less, 10 mol% or less, 8 mol% or less, or 6 mol% or less.
- the total content of units A and B is 0.05 mol % or more, the dispersibility of the inorganic filler tends to be further improved.
- the handleability of the resin composition tends to be further improved.
- the molar ratio of unit A to unit B (unit A/unit B) is 0.01 or more, 0.9 or more, 1 or more, 5 or more, 10 or more, 20 or more, 30 or more, 40 or more, or 50 or more. It may be 200 or less, 150 or less, 100 or less, 90 or less, 80 or less, 70 or less, 60 or less, 50 or less, 40 or less, 30 or less, 20 or less, 15 or less, or 10 or less.
- the molar ratio of unit A to unit B is within the above range, the dispersibility of the inorganic filler tends to be further improved.
- the weight average molecular weight of the copolymer is 1,000 or more, 5,000 or more, 7,000 or more, 10,000 or more, 20,000 or more, 30,000 or more, 40,000 or more, or 50,000 or more. 1,000,000 or less, 500,000 or less, 300,000 or less, 100,000 or less, 90,000 or less, 80,000 or less, 70,000 or less, or 60,000 or less Good too.
- the copolymer maintains the dispersibility of the inorganic filler and maintains the dispersibility of the resin composition even when the resin composition is stored in a high-temperature environment for a long time. Hardness increase can be suppressed.
- the shape retention of the resin composition is improved, and the resin composition is prevented from slipping or dripping when applied to a slope or a vertical surface.
- the weight average molecular weight of the copolymer is 1,000,000 or less, the viscosity of the resin composition tends to be further reduced and the handling properties of the resin composition are further improved.
- the weight average molecular weight of the copolymer is determined as a weight average molecular weight in terms of standard polystyrene using GPC (gel permeation chromatography).
- the copolymer is obtained by polymerizing monomer A, monomer B, and monomer C using a known polymerization method.
- polymerization methods include radical polymerization and anionic polymerization.
- the polymerization method is preferably radical polymerization.
- the polymerization initiator used in radical polymerization may be a thermal polymerization initiator or a photopolymerization initiator.
- the thermal polymerization initiator include azo compounds such as azobisisobutyronitrile; organic peroxides such as benzoyl peroxide, tert-butyl hydroperoxide, and di-tert-butyl peroxide.
- photopolymerization initiators include benzoin derivatives.
- the polymerization initiator may be a known polymerization initiator used in living radical polymerization such as ATRP and RAFT.
- the polymerization conditions can be adjusted as appropriate depending on the type of monomer, polymerization initiator, etc.
- each monomer may be mixed in advance and polymerized. If the copolymer is a block copolymer, each monomer may be added sequentially to the polymerization system.
- the content of the copolymer is 0.01 to 10 parts by mass based on 100 parts by mass of the inorganic filler. When the content of the copolymer is within this range, a resin composition capable of forming an insulating layer having excellent insulation reliability against application of high DC voltage under high temperature (150° C.) conditions can be obtained.
- the content of the copolymer is 0.05 parts by mass or more, 0.1 parts by mass or more, 0.5 parts by mass or more, 1 part by mass or more, 2 parts by mass or more, 3 parts by mass or more, based on 100 parts by mass of the inorganic filler. It may be at least 9 parts by mass, at most 8 parts by mass, at most 7 parts by mass, at most 6 parts by mass, at most 5 parts by mass, or at most 4 parts by mass. .
- the content of the copolymer is 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 2% by mass or more, or 2.5% by mass or more based on the total mass of the resin composition.
- the amount may be 10% by mass or less, 8% by mass or less, 6% by mass or less, 5% by mass or less, 4% by mass or less, or 3% by mass or less.
- the inorganic ion trapping agent is an inorganic material that has the function of trapping at least one of cations and anions (has ion trapping properties).
- "ion trapping property” refers to the property of adsorbing target ions to the surface of an inorganic material, or the property of adsorbing target ions to the structure of an inorganic material through ion exchange between the ions within the structure of the inorganic material and the target ions. refers to the property of introducing ions to be captured into.
- Ions to be captured by the inorganic ion capture agent include cations such as Na ions, Cu ions, and Ag ions; anions such as Cl ions and Br ions.
- the inorganic ion trapping agent may include, for example, at least one selected from the group consisting of Al, Mg, Bi, Zr, Sb, Sn, Ti, and Zn; It may contain at least one selected from the group consisting of:
- the inorganic ion scavenger may be, for example, an oxide containing at least one of these metal elements, an acid chloride, a hydrate thereof, or the like.
- the inorganic ion scavenger may contain two or more of these metal elements.
- Inorganic ion trapping agents include anion exchangers that trap anions, cation exchangers that trap cations, and amphoteric ion exchangers that trap both anions and cations.
- the inorganic ion scavenger may be used alone or in combination of two or more types; for example, the both ion exchangers may be a mixture of an anion exchanger and a cation exchanger.
- anion exchanger examples include inorganic materials containing at least one selected from the group consisting of Al, Mg, Bi, Zr, and Zn.
- anion exchangers include IXE-500 (Bi-based), IXE-530 (Bi-based), IXE-550 (Bi-based), IXE-700 (Mg, Al-based), IXE-700F ( Mg, Al-based), IXE-770 (Mg, Al-based), IXE-770D (Mg, Al-based), IXE-702 (Al-based), IXE-800 (Zr-based), IXE-1000 (Zn-based) ( (all manufactured by Toagosei Co., Ltd.).
- the cation exchanger examples include inorganic materials containing at least one selected from the group consisting of Zr, Sn, and Ti.
- the cation exchanger is IXE-100 (Zr type), IXE-200 (Sn type), IXE-300 (Sb type), IXE-400 (Ti type) (all manufactured by Toagosei Co., Ltd. ) etc.
- amphoteric ion exchanger examples include inorganic materials containing at least one selected from the group consisting of Al, Mg, Bi, Zr, and Sb.
- specific examples of both ion exchangers include IXE-1320 (Mg, Al-based), IXE-600 (Sb, Bi-based), IXE-633 (Bi-based), IXE-680 (Bi-based), IXE- 6107 (Zr, Bi-based), IXE-6136 (Zr, Bi-based), IXEPLAS-A1 (Zr, Mg, Al-based), IXEPLAS-A2 (Zr, Mg, Al-based), IXEPLAS-B1 (Zr, Bi-based) ) (all manufactured by Toagosei Co., Ltd.).
- the average particle diameter of the inorganic ion scavenger may be 0.05 ⁇ m or more, 0.1 ⁇ m or more, 0.15 ⁇ m or more, 0.2 ⁇ m or more, 0.3 ⁇ m or more, 0.4 ⁇ m or more, or 0.5 ⁇ m or more. , 10 ⁇ m or less, 5 ⁇ m or less, 3 ⁇ m or less, 2 ⁇ m or less, 1.5 ⁇ m or less, or 1 ⁇ m or less.
- the average particle size of the inorganic ion scavenger may be 0.05 to 10 ⁇ m.
- the average particle diameter of the inorganic ion scavenger can be measured by laser diffraction/scattering method.
- the content of the inorganic ion trapping agent containing at least one selected from the group consisting of Al, Mg, Bi, Zr, Sb, and Zn is 80% by mass or more and 90% by mass based on the total mass of the inorganic ion trapping agent. or more, or 95% by mass or more.
- the content of the inorganic ion trapping agent containing at least one selected from the group consisting of Al, Mg, Bi, Zr, Sb, and Zn is substantially 100% by mass based on the total mass of the inorganic ion trapping agent. It's okay.
- the content of the inorganic ion scavenger is 0.1 to 50 parts by mass based on the total of 100 parts by mass of the thermosetting resin and copolymer.
- the content of the inorganic ion scavenger is determined from the viewpoint of obtaining a resin composition that can form an insulating layer with better insulation reliability against the application of high DC voltage under high temperature (150°C) conditions.
- 0.3 parts by mass or more 0.5 parts by mass or more, 1 part by mass or more, 2 parts by mass or more, 3 parts by mass or more, or 4 parts by mass or more, based on a total of 100 parts by mass of the resin and copolymer.
- the amount may be 40 parts by mass or less, 30 parts by mass or less, 20 parts by mass or less, 15 parts by mass or less, or 10 parts by mass or less.
- the content of the inorganic ion scavenger is determined from the viewpoint of obtaining a resin composition capable of forming an insulating layer having better insulation reliability against application of DC high voltage under high temperature (150°C) conditions. 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.2% by mass or more, or 1.4% by mass or more based on the total mass of It may be 30% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, 8% by mass or less, 6% by mass or less, or 4% by mass or less.
- the mass ratio of the inorganic ion trapping agent to the copolymer is From the viewpoint of obtaining a resin composition capable of forming an insulating layer having better insulation reliability, it may be 0.005 or more, 0.01 or more, or 0.05 or more, and 1000 or less, 100 or less, Or it may be 50 or less.
- the mass ratio of inorganic ion trapping agent to copolymer may be 25 or less, 10 or less, 5 or less, or 3 or less.
- the mass ratio of the inorganic ion scavenger to the copolymer may be from 0.001 to 10,000.
- the resin composition may further contain a curing agent for curing the thermosetting resin.
- the curing agent is appropriately selected depending on the type of thermosetting resin.
- examples of the curing agent include amine resins, acid anhydride resins, and phenol resins.
- the curing agents may be used alone or in combination of two or more.
- the content of the curing agent may be 1% by mass or more or 3% by mass or more, and may be 10% by mass or less or 5% by mass or less based on the total mass of the resin composition.
- the resin composition may further contain other components.
- Other components include, for example, a curing accelerator, a coupling agent, a leveling agent, an antioxidant, an antifoaming agent, a wetting agent, a dispersant, and a stabilizer.
- the resin composition is obtained by mixing a thermosetting resin, an inorganic filler, a copolymer, and an inorganic ion scavenger (and a curing agent and other components used as necessary). Mixing may be performed using, for example, a planetary stirrer, a universal mixer, a kneader, a hybrid mixer, or the like.
- the peak position in X-ray diffraction measurement of the resin composition can be confirmed, for example, by preparing a cured body of the resin composition and performing X-ray diffraction measurement on the cured body.
- the resin composition described above can be used after being cured, for example. That is, one embodiment of the present invention is a cured product (insulating resin cured product) of the resin composition described above.
- the cured product may be in a semi-cured state (B stage) or in a completely cured state (C stage).
- the cured product can be obtained, for example, by heat-treating and curing the resin composition described above.
- the conditions for heat treatment are appropriately set depending on the types of resin and curing agent, the desired cured state, and the like.
- the heat treatment may be performed in one step or in two steps.
- the cured body may be in the form of a sheet, for example.
- a sheet-like cured product can be obtained, for example, by applying the above-described resin composition onto a substrate and heating (and pressing if necessary).
- the sheet-shaped cured product may be a semi-cured B-stage sheet or a completely cured C-stage sheet.
- the above-described resin composition and its cured product are suitably used for forming an insulating layer of a metal base substrate. That is, the above-mentioned resin composition and its cured product can also be called a resin composition for metal base substrates and a cured product for metal base substrates, respectively.
- FIG. 1 is a schematic cross-sectional view showing one embodiment of a laminate.
- a laminate 10A according to an embodiment includes a first metal layer 1A and an insulating layer (a cured product of the resin composition described above) disposed on one surface of the first metal layer. ) 2, and a second metal layer 3A disposed on the surface of the insulating layer 2 opposite to the first metal layer.
- the first metal layer 1A and the second metal layer 3A are separated by an insulating layer 2 and are kept electrically insulated from each other.
- the metal material constituting the first metal layer 1A examples include aluminum, aluminum alloy, copper, copper alloy, iron, and stainless steel.
- the first metal layer 1A may be made of one kind of metal material, or may be made of two or more kinds of metal materials.
- the first metal layer 1A may have a single layer structure or a multilayer structure.
- Examples of the metal material constituting the second metal layer 3A include copper, aluminum, and nickel.
- the second metal layer 3A may be made of one type of metal material, or may be made of two or more types of metal materials.
- the second metal layer 3A may have a single layer structure or a multilayer structure. In FIG. 1, the second metal layer 3A is disposed on substantially the entire surface of the insulating layer 2, but the second metal layer may be disposed only on a part of the insulating layer 2.
- the thickness of the first metal layer 1A may be, for example, 0.5 mm or more and 3 mm or less.
- the thickness of the insulating layer 2 may be, for example, 50 ⁇ m or more and 300 ⁇ m or less.
- the thickness of the second metal layer 3A may be, for example, 5 ⁇ m or more and 1 mm or less.
- FIG. 2 is a schematic cross-sectional view showing one embodiment of the circuit board.
- a circuit board 10B according to an embodiment includes a metal layer 1B, an insulating layer (cured body of the resin composition described above) 2 disposed on one surface of the metal layer 1B, and an insulating layer 2 (cured body of the resin composition described above).
- a metal circuit portion 3B is provided on the surface of the layer 2 opposite to the metal layer 1B.
- the metal circuit portion 3B is, for example, a circuit processed (for example, etched) into a predetermined pattern.
- the metal material constituting the metal layer 1B may be the same as the metal material constituting the first metal layer 1A described above.
- Examples of the metal material constituting the metal circuit portion 3B include those similar to the metal materials constituting the second metal layer 3A described above.
- the thickness of the metal layer 1B may be, for example, 0.5 mm or more and 3 mm or less.
- the thickness of the insulating layer 2 may be, for example, 50 ⁇ m or more and 300 ⁇ m or less.
- the thickness of the metal circuit portion 3B may be, for example, 5 ⁇ m or more, or 1 mm or less.
- the polymerization rate based on 100% monomer charge amount was 98% or more when analyzed by gas chromatography. From this, it was estimated that the ratio of each monomer unit in the copolymer was approximately the same as the monomer charge ratio.
- the weight average molecular weight of the obtained copolymer 1 was determined as a weight average molecular weight in terms of standard polystyrene using GPC (gel permeation chromatography) method.
- GPC gel permeation chromatography
- Example 1 27.9% by mass of naphthalene type epoxy resin HP-4032D (manufactured by DIC Corporation) as a thermosetting resin and 3.5% by mass of phenol novolak resin VH-4150 (manufactured by DIC Corporation) as a curing agent at 170°C. The mixture was stirred to dissolve the curing agent in the thermosetting resin.
- naphthalene type epoxy resin HP-4032D manufactured by DIC Corporation
- phenol novolak resin VH-4150 manufactured by DIC Corporation
- a resin in which a curing agent is dissolved, boron nitride filler as an inorganic filler (manufactured by Denka, average particle size 40 ⁇ m, thermal conductivity 150 W/m K) 64.4% by mass (50% by volume), copolymer 2 .6% by mass (4phf), as an inorganic ion trapping agent 1.4% by mass (IXEPLAS-A1 (Zr, Mg, Al system), average particle diameter 0.5 ⁇ m, manufactured by Toagosei Co., Ltd.) 4.5 phr) and 0.2% by mass of 1B2PZ (manufactured by Shikoku Kasei Kogyo Co., Ltd.) as a curing accelerator were stirred and mixed for 15 minutes using a planetary mixer to prepare a resin composition.
- the obtained resin composition was applied onto a polyethylene terephthalate (PET) film having a thickness of 0.038 mm so that the thickness after curing would be 0.20 mm, and was heated and dried at 100 ° C. for 50 minutes. As a result, a semi-cured cured body (B-stage sheet) was produced.
- PET polyethylene terephthalate
- the copper foil was etched using a mixed solution of sulfuric acid and hydrogen peroxide as an etching solution.
- a metal base circuit board having a circular electrode (copper foil) with a diameter of 20 mm was obtained.
- Example 2 The same method as in Example 1 was used, except that inorganic ion trapping agent 2 (IXEPLAS-A2 (Zr, Mg, Al system), average particle size 0.2 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion trapping agent. Accordingly, a resin composition, a cured product, and a metal base circuit board were produced.
- inorganic ion trapping agent 2 IXEPLAS-A2 (Zr, Mg, Al system), average particle size 0.2 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 3 By the same method as in Example 1, except that inorganic ion trapping agent 3 (IXEPLAS-B1 (Zr, Bi system), average particle size 0.4 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion trapping agent. A resin composition, a cured product, and a metal base circuit board were produced.
- inorganic ion trapping agent 3 IXEPLAS-B1 (Zr, Bi system), average particle size 0.4 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 4 By the same method as in Example 1, except that inorganic ion trapping agent 4 (IXE-700F (Mg, Al system), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion trapping agent. A resin composition, a cured product, and a metal base circuit board were produced.
- inorganic ion trapping agent 4 IXE-700F (Mg, Al system), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 5 The resin composition was prepared in the same manner as in Example 1, except that inorganic ion scavenger 5 (IXE-550 (Bi-based), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion scavenger. A cured product, a metal-based circuit board, and a metal-based circuit board were fabricated.
- inorganic ion scavenger 5 IXE-550 (Bi-based), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 6 The resin composition was prepared in the same manner as in Example 1, except that inorganic ion scavenger 6 (IXE-100 (Zr type), average particle size 1.0 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion scavenger. A cured product, a metal-based circuit board, and a metal-based circuit board were fabricated.
- inorganic ion scavenger 6 IXE-100 (Zr type), average particle size 1.0 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 7 By the same method as Example 1, except that inorganic ion trapping agent 7 (IXE-600 (Sb, Bi system), average particle size 1.0 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion trapping agent. A resin composition, a cured product, and a metal base circuit board were produced.
- inorganic ion trapping agent 7 IXE-600 (Sb, Bi system), average particle size 1.0 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 8 By the same method as Example 1, except that inorganic ion trapping agent 8 (IXE-6107 (Zr, Bi system), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.) was used as the inorganic ion trapping agent. A resin composition, a cured product, and a metal base circuit board were produced.
- inorganic ion trapping agent 8 IXE-6107 (Zr, Bi system), average particle size 1.5 ⁇ m, manufactured by Toagosei Co., Ltd.
- Example 9 A resin composition, a cured product, and a metal-based circuit board were produced in the same manner as in Example 3, except that the amount of the inorganic ion scavenger or copolymer added was changed as shown in Tables 2 and 3.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
(1)熱硬化性樹脂と、無機充填材と、共重合体と、無機イオン捕捉剤と、を含有し、前記共重合体が、アニオン性基を有する(メタ)アクリル系単量体単位Aと、カチオン性基を有する(メタ)アクリル系単量体単位Bと、前記(メタ)アクリル系単量体単位A及び前記(メタ)アクリル系単量体単位B以外の(メタ)アクリル系単量体単位Cと、を有し、前記無機イオン捕捉剤の含有量が、前記熱硬化性樹脂100質量部に対して0.1~50質量部であり、前記共重合体の含有量が、前記無機充填材100質量部に対して0.01~10質量部である、樹脂組成物。
(2)前記無機充填材の熱伝導率が20W/m・K以上である、(1)に記載の樹脂組成物。
(3)前記無機充填材の含有量が、前記樹脂組成物の全体積に対して30~70体積%である、(1)又は(2)に記載の樹脂組成物。
(4)前記無機イオン捕捉剤が、Al、Mg、Bi、Zr、Sb、Sn、Ti、及びZnからなる群より選ばれる少なくとも一種を含む、(1)~(3)のいずれかに記載の樹脂組成物。
(5)前記無機イオン捕捉剤の平均粒子径が0.05~10μmである、(1)~(4)のいずれかに記載の樹脂組成物。
(6)前記共重合体に対する前記無機イオン捕捉剤の質量比率が0.001~10000である、(1)~(5)のいずれかに記載の樹脂組成物。
(7)X線回折測定において2θ=11~15°の範囲内にピークを有する、(1)~(6)のいずれかに記載の樹脂組成物。
(8)前記熱硬化性樹脂がエポキシ樹脂である、(1)~(7)のいずれかに記載の樹脂組成物。
(9)(1)~(8)のいずれかに記載の樹脂組成物の硬化体である、絶縁性樹脂硬化体。
(10)第一の金属層と、前記第一の金属層の一方の面上に配置された絶縁層と、前記絶縁層の前記第一の金属層とは反対側の面上に配置された第二の金属層と、を備え、前記絶縁層が、(9)に記載の絶縁性樹脂硬化体である、積層体。
(11)金属層と、前記金属層の一方の面上に配置された絶縁層と、前記絶縁層の前記金属層とは反対側の面上に配置された金属回路部と、を備え、前記絶縁層が、(9)に記載の絶縁性樹脂硬化体である、回路基板。
実施例の共重合体の合成に用いた単量体を以下に示す。
(アニオン性基を有する(メタ)アクリル系単量体A)
・アクリル酸(東亞合成社製)
(カチオン性基を有する(メタ)アクリル系単量体B)
・メタクリル酸-1,2,2,6,6-ペンタメチル-4-ピペリジル(ADEKA株式会社製「アデカスタブLA-82」)
((メタ)アクリル系単量体C)
・ベンジルメタクリレート(共栄社化学株式会社製「ライトエステルBZ」)
高速GPC装置:東ソー社製「HLC-8020」
カラム :東ソー社製「TSK guardcolumn MP(×L)」6.0mmID×4.0cm1本、及び東ソー社製「TSK-GELMULTIPOREHXL-M」7.8mmID×30.0cm(理論段数16000段)2本、計3本(全体として理論段数32000段)
展開溶媒 :テトラヒドロフラン
ディテクター :RI(示差屈折率計)
(実施例1)
熱硬化性樹脂としてナフタレン型エポキシ樹脂HP-4032D(DIC株式会社製)27.9質量%と、硬化剤としてフェノールノボラック樹脂VH-4150(DIC株式会社製)3.5質量%とを170℃で攪拌し、熱硬化性樹脂に硬化剤を溶解させた。硬化剤を溶解させた樹脂と、無機充填材として窒化ホウ素フィラー(デンカ社製、平均粒子径40μm、熱伝導率150W/m・K)64.4質量%(50体積%)、共重合体2.6質量%(4phf)、無機イオン捕捉剤として無機イオン捕捉剤1(IXEPLAS-A1(Zr、Mg、Al系)、平均粒子径0.5μm、東亞合成株式会社製)1.4質量%(4.5phr)、及び硬化促進剤として1B2PZ(四国化成工業社製)0.2質量%をプラネタリーミキサーで15分間攪拌混合し、樹脂組成物を作製した。
得られた樹脂組成物を、厚さ0.038mmのポリエチレンテレフタレート(PET)製のフィルム上に、硬化後の厚さが0.20mmになるように塗布し、100℃で50分間加熱乾燥させ、これにより半硬化状態の硬化体(Bステージ状態のシート)を作製した。
作製した硬化体(Bステージ状態のシート)をPETフィルムからはがし、金属板(厚さ2.0mmの銅板)の粗化面上に配置し、硬化体の上に金属箔(厚さ0.5mmの銅箔)の粗化面を配置し、プレス機によって面圧10MPaをかけながら180℃で410分間加熱硬化した。
無機イオン捕捉剤として無機イオン捕捉剤2(IXEPLAS-A2(Zr、Mg、Al系)、平均粒子径0.2μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤3(IXEPLAS-B1(Zr、Bi系)、平均粒子径0.4μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤4(IXE-700F(Mg、Al系)、平均粒子径1.5μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤5(IXE-550(Bi系)、平均粒子径1.5μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤6(IXE-100(Zr系)、平均粒子径1.0μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤7(IXE-600(Sb、Bi系)、平均粒子径1.0μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤として無機イオン捕捉剤8(IXE-6107(Zr、Bi系)、平均粒子径1.5μm、東亞合成株式会社製)を用いたこと以外は、実施例1と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤又は共重合体の添加量を表2及び3に示すとおりに変更したこと以外は、実施例3と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
無機イオン捕捉剤の添加量を表4に示すとおりに変更したこと以外は、実施例3と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
共重合体の添加量を表4に示すとおりに変更したこと以外は、実施例2と同様の方法により、樹脂組成物、硬化体、金属ベース回路基板を作製した。
各実施例及び比較例で作製した硬化体について、リガク社製X線回折装置「Rigaku MiniFlexII」を用いてX線回折測定を行った。2θ=11~15°の範囲において検出されたXRDピークの位置を表1~4に示す。
得られた金属ベース基板について、150℃環境下で、金属箔-金属板間に直流10kVの電圧を印加する試験条件で絶縁破壊までの時間を測定する、高温高圧バイアス試験(V-t)を行った。絶縁破壊までの時間は、電圧印加開始から、耐電圧試験機で測定した漏れ電流値が10mA以上となった時点までの時間とした。
Claims (11)
- 熱硬化性樹脂と、無機充填材と、共重合体と、無機イオン捕捉剤と、を含有し、
前記共重合体が、アニオン性基を有する(メタ)アクリル系単量体単位Aと、カチオン性基を有する(メタ)アクリル系単量体単位Bと、前記(メタ)アクリル系単量体単位A及び前記(メタ)アクリル系単量体単位B以外の(メタ)アクリル系単量体単位Cと、を有し、
前記無機イオン捕捉剤の含有量が、前記熱硬化性樹脂及び前記共重合体の合計100質量部に対して0.1~50質量部であり、
前記共重合体の含有量が、前記無機充填材100質量部に対して0.01~10質量部である、樹脂組成物。 - 前記無機充填材の熱伝導率が20W/m・K以上である、請求項1に記載の樹脂組成物。
- 前記無機充填材の含有量が、前記樹脂組成物の全体積に対して30~70体積%である、請求項1又は2に記載の樹脂組成物。
- 前記無機イオン捕捉剤が、Al、Mg、Bi、Zr、Sb、Sn、Ti、及びZnからなる群より選ばれる少なくとも一種を含む、請求項1~3のいずれか一項に記載の樹脂組成物。
- 前記無機イオン捕捉剤の平均粒子径が0.05~10μmである、請求項1~4のいずれか一項に記載の樹脂組成物。
- 前記共重合体に対する前記無機イオン捕捉剤の質量比率が0.001~10000である、請求項1~5のいずれか一項に記載の樹脂組成物。
- X線回折測定において2θ=11~15°の範囲内にピークを有する、請求項1~6のいずれか一項に記載の樹脂組成物。
- 前記熱硬化性樹脂がエポキシ樹脂である、請求項1~7のいずれか一項に記載の樹脂組成物。
- 請求項1~8のいずれか一項に記載の樹脂組成物の硬化体である、絶縁性樹脂硬化体。
- 第一の金属層と、前記第一の金属層の一方の面上に配置された絶縁層と、前記絶縁層の前記第一の金属層とは反対側の面上に配置された第二の金属層と、を備え、
前記絶縁層が、請求項9に記載の絶縁性樹脂硬化体である、積層体。 - 金属層と、前記金属層の一方の面上に配置された絶縁層と、前記絶縁層の前記金属層とは反対側の面上に配置された金属回路部と、を備え、
前記絶縁層が、請求項9に記載の絶縁性樹脂硬化体である、回路基板。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020247035292A KR20240167679A (ko) | 2022-03-31 | 2023-03-15 | 수지 조성물, 절연성 수지 경화체, 적층체 및 회로 기판 |
| EP23779627.1A EP4497787A1 (en) | 2022-03-31 | 2023-03-15 | Resin composition, insulating resin cured body, laminate, and circuit substrate |
| JP2024511760A JPWO2023189609A1 (ja) | 2022-03-31 | 2023-03-15 | |
| CN202380029193.0A CN118900898A (zh) | 2022-03-31 | 2023-03-15 | 树脂组合物、绝缘性树脂固化体、层叠体、及电路基板 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-060139 | 2022-03-31 | ||
| JP2022060139 | 2022-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023189609A1 true WO2023189609A1 (ja) | 2023-10-05 |
Family
ID=88201625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/010132 Ceased WO2023189609A1 (ja) | 2022-03-31 | 2023-03-15 | 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4497787A1 (ja) |
| JP (1) | JPWO2023189609A1 (ja) |
| KR (1) | KR20240167679A (ja) |
| CN (1) | CN118900898A (ja) |
| WO (1) | WO2023189609A1 (ja) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008266533A (ja) | 2007-04-25 | 2008-11-06 | Jfe Steel Kk | コークス炉の建設方法及びコークス炉建設用仮上屋 |
| WO2009038020A1 (ja) * | 2007-09-19 | 2009-03-26 | Toray Industries, Inc. | 電子部品用接着剤組成物およびそれを用いた電子部品用接着剤シート |
| WO2012039324A1 (ja) * | 2010-09-22 | 2012-03-29 | 日立化成工業株式会社 | 熱伝導性樹脂組成物、樹脂シート、樹脂付金属箔、樹脂シート硬化物及び放熱部材 |
| WO2013030998A1 (ja) * | 2011-08-31 | 2013-03-07 | 日立化成工業株式会社 | 樹脂組成物、樹脂シート、金属箔付き樹脂シート、樹脂硬化物シート、構造体、および動力用又は光源用半導体デバイス |
| JP2016155985A (ja) * | 2015-02-26 | 2016-09-01 | 日立化成株式会社 | エポキシ樹脂組成物、半硬化エポキシ樹脂組成物、硬化エポキシ樹脂組成物、及びそれらを用いた樹脂シート、プリプレグ、積層板、金属基板、配線板、パワー半導体装置 |
| JP2017041633A (ja) * | 2015-08-17 | 2017-02-23 | 積水化学工業株式会社 | 半導体装置及び半導体素子保護用材料 |
| JP2017103332A (ja) * | 2015-12-01 | 2017-06-08 | 味の素株式会社 | 半導体チップパッケージの製造方法 |
-
2023
- 2023-03-15 WO PCT/JP2023/010132 patent/WO2023189609A1/ja not_active Ceased
- 2023-03-15 CN CN202380029193.0A patent/CN118900898A/zh active Pending
- 2023-03-15 EP EP23779627.1A patent/EP4497787A1/en not_active Withdrawn
- 2023-03-15 JP JP2024511760A patent/JPWO2023189609A1/ja active Pending
- 2023-03-15 KR KR1020247035292A patent/KR20240167679A/ko not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008266533A (ja) | 2007-04-25 | 2008-11-06 | Jfe Steel Kk | コークス炉の建設方法及びコークス炉建設用仮上屋 |
| WO2009038020A1 (ja) * | 2007-09-19 | 2009-03-26 | Toray Industries, Inc. | 電子部品用接着剤組成物およびそれを用いた電子部品用接着剤シート |
| WO2012039324A1 (ja) * | 2010-09-22 | 2012-03-29 | 日立化成工業株式会社 | 熱伝導性樹脂組成物、樹脂シート、樹脂付金属箔、樹脂シート硬化物及び放熱部材 |
| WO2013030998A1 (ja) * | 2011-08-31 | 2013-03-07 | 日立化成工業株式会社 | 樹脂組成物、樹脂シート、金属箔付き樹脂シート、樹脂硬化物シート、構造体、および動力用又は光源用半導体デバイス |
| JP2016155985A (ja) * | 2015-02-26 | 2016-09-01 | 日立化成株式会社 | エポキシ樹脂組成物、半硬化エポキシ樹脂組成物、硬化エポキシ樹脂組成物、及びそれらを用いた樹脂シート、プリプレグ、積層板、金属基板、配線板、パワー半導体装置 |
| JP2017041633A (ja) * | 2015-08-17 | 2017-02-23 | 積水化学工業株式会社 | 半導体装置及び半導体素子保護用材料 |
| JP2017103332A (ja) * | 2015-12-01 | 2017-06-08 | 味の素株式会社 | 半導体チップパッケージの製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118900898A (zh) | 2024-11-05 |
| EP4497787A1 (en) | 2025-01-29 |
| JPWO2023189609A1 (ja) | 2023-10-05 |
| KR20240167679A (ko) | 2024-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2796482B1 (en) | Polymer powder, curable resin composition, and cured product thereof | |
| CN105659338B (zh) | 软磁性树脂组合物和软磁性薄膜 | |
| TWI812589B (zh) | 樹脂組成物、預浸體、附有樹脂之金屬箔、積層板、及印刷線路板 | |
| US20220186089A1 (en) | Copolymer, dispersant, and resin composition | |
| JP7589255B2 (ja) | 組成物及びその製造方法、硬化体、並びに金属ベース基板 | |
| JPWO2012039324A1 (ja) | 熱伝導性樹脂組成物、樹脂シート、樹脂付金属箔、樹脂シート硬化物及び放熱部材 | |
| TWI896516B (zh) | 製造功率半導體裝置的方法 | |
| CN102273015A (zh) | 各向异性导电膜 | |
| JP7769955B2 (ja) | 樹脂組成物、並びに、それを用いた樹脂フィルム、樹脂付金属箔、金属張積層板、及び配線基板 | |
| WO2023189609A1 (ja) | 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 | |
| WO2023189610A1 (ja) | 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 | |
| JP7644137B2 (ja) | 組成物、硬化体及び金属ベース基板 | |
| JP2011111498A (ja) | 樹脂シート及び積層体 | |
| JP2008277759A (ja) | 絶縁性熱伝導シート | |
| TWI839358B (zh) | 真空印刷用導電性糊料 | |
| JP2025063576A (ja) | 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 | |
| WO2025075098A1 (ja) | 樹脂組成物、絶縁性樹脂硬化体、積層体、及び回路基板 | |
| JP2018115275A (ja) | 硬化性材料、硬化性材料の製造方法及び積層体 | |
| JP2021050305A (ja) | 樹脂シート及びパワー半導体装置 | |
| JPH07266499A (ja) | 銅張積層板の製造方法 | |
| JP2013095860A (ja) | 硬化性樹脂用応力緩和剤、硬化性樹脂組成物及び成形体 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23779627 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2024511760 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380029193.0 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 20247035292 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020247035292 Country of ref document: KR Ref document number: 2023779627 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2023779627 Country of ref document: EP Effective date: 20241023 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 2023779627 Country of ref document: EP |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 1020247035292 Country of ref document: KR |