WO2024038794A1 - 低誘電性樹脂組成物、接着付与剤、低誘電接着性組成物、低誘電接着性成形物、低誘電接着剤および積層体 - Google Patents
低誘電性樹脂組成物、接着付与剤、低誘電接着性組成物、低誘電接着性成形物、低誘電接着剤および積層体 Download PDFInfo
- Publication number
- WO2024038794A1 WO2024038794A1 PCT/JP2023/028788 JP2023028788W WO2024038794A1 WO 2024038794 A1 WO2024038794 A1 WO 2024038794A1 JP 2023028788 W JP2023028788 W JP 2023028788W WO 2024038794 A1 WO2024038794 A1 WO 2024038794A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- low dielectric
- adhesive
- mass
- resin composition
- styrene
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/02—Ethene
-
- 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
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/08—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having four or more carbon atoms
-
- 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
- C08F287/00—Macromolecular compounds obtained by polymerising monomers on to block 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/46—Reaction with unsaturated dicarboxylic acids or anhydrides thereof, e.g. maleinisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms
- C08L23/0823—Copolymers of ethene with unsaturated hydrocarbons only containing four or more carbon atoms with aliphatic cyclic olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L45/00—Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D153/02—Vinyl aromatic monomers and conjugated dienes
- C09D153/025—Vinyl aromatic monomers and conjugated dienes modified
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C09J123/0815—Copolymers of ethene with aliphatic 1-olefins
- C09J123/0823—Copolymers of ethene with aliphatic cyclic olefins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- B32B2307/204—Di-electric
-
- 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
-
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
Definitions
- the present invention relates to a low dielectric resin composition, an adhesion promoter, a low dielectric adhesive composition, a low dielectric adhesive molded product, a low dielectric adhesive, and a laminate.
- the printed circuit board includes, for example, a resin layer (insulating layer) containing a thermosetting resin and a conductor layer containing metal. Wired circuit boards are widely used in various industrial fields.
- This low dielectric constant resin includes a maleic anhydride graft modified resin.
- a maleic anhydride graft modified resin a maleic anhydride grafted (styrene-ethylene-butylene-styrene) block copolymer is used alone, or a maleic anhydride grafted cyclic olefin copolymer is used alone (for example, Patent Document 2 (See Example 1 and Example 4).
- the interlayer adhesive for example, a resin having relatively high adhesiveness and relatively low dielectric constant is used.
- this resin contains a mixture of a maleic acid-modified propylene/1-butene copolymer and a maleic acid-modified styrene-ethylene-propylene-styrene copolymer.
- the above resin is produced by modifying a mixture of a propylene/1-butene copolymer and a styrene-ethylene-propylene-styrene copolymer with maleic acid (for example, (See Patent Document 1 (Manufacturing Example 5 and Example 1).)
- adhesion promoters and interlayer adhesives are required to have better heat resistance.
- adhesion promoter is mixed with a thermosetting resin to form a resin layer (insulating layer). Therefore, adhesion promoters are required to have improved affinity (compatibility) with thermosetting resins.
- interlayer adhesive is required to have excellent adhesion to the resin layer (insulating layer). Therefore, interlayer adhesives are also required to have improved affinity (adhesion) with thermosetting resins.
- the present invention provides a low dielectric resin composition and an adhesion promoter that have excellent adhesion and low dielectric properties, and furthermore, have excellent heat resistance and, in addition, have excellent affinity for thermosetting resins. , a low dielectric adhesive composition, a low dielectric adhesive molded product, a low dielectric adhesive, and a laminate.
- the present invention [1] is a low dielectric resin composition containing a polyolefin resin, wherein the polyolefin resin comprises a styrene elastomer (A) and a cyclic olefin polymer (B) having an alicyclic ring in the main chain. and the content of the styrenic elastomer (A) is 30 parts by mass or more and 89 parts by mass relative to 100 parts by mass of the styrenic elastomer (A) and the cyclic olefin polymer (B). It contains the following low dielectric resin composition.
- the present invention [2] includes the low dielectric resin composition according to the above [1], wherein the styrenic elastomer (A) has a weight average molecular weight of 70,000 or more and 110,000 or less.
- the styrenic elastomer (A) contains structural units derived from styrene, and the content ratio of the structural units derived from styrene is based on the total amount of the styrene elastomer (A).
- the low dielectric resin composition according to [1] or [2] above which is 10% by mass or more and 40% by mass or less.
- the present invention [4] provides the low dielectric resin composition according to any one of [1] to [3] above, wherein the styrenic elastomer (A) does not contain a structural unit derived from butylene. Contains.
- the present invention [5] provides the low dielectric resin according to any one of [1] to [4] above, wherein the cyclic olefin polymer (B) has a glass transition temperature of 100°C or more and 140°C or less.
- the composition includes:
- the present invention [6] includes the low dielectric resin composition according to any one of [1] to [5] above, wherein the polyolefin resin is modified with a functional group-containing monomer. .
- the present invention [7] includes the low dielectric resin composition according to the above [6], wherein the functional group-containing monomer includes a carboxyl group-containing monomer.
- the present invention [8] includes an adhesion promoter containing the low dielectric resin composition according to any one of [1] to [7] above.
- the present invention contains a thermosetting resin and the adhesion promoter according to the above [8], and the thermosetting resin is made of an epoxy resin, a polyphenylene ether resin, a fluororesin, a polyimide resin, a phenol resin. , a low dielectric adhesive composition containing at least one selected from the group consisting of melamine resin, polyolefin resin having unsaturated double bonds, and liquid crystal polymer.
- the present invention includes a low dielectric adhesive molded article containing a cured product of the low dielectric adhesive composition described in [9] above.
- the present invention [11] includes a laminate comprising an insulating layer containing the low dielectric adhesive molded product according to [10] above, and a conductor layer disposed on at least one surface of the insulating layer. .
- the present invention [12] includes a low dielectric adhesive containing the low dielectric resin composition according to any one of [1] to [7] above.
- the present invention [13] includes an insulating layer, a conductor layer disposed opposite to the insulating layer, and an adhesive layer disposed between the insulating layer and the conductor layer and bonding the insulating layer and the conductor layer.
- the adhesive layer includes a laminate containing the low dielectric adhesive described in [12] above.
- the present invention [14] provides a first conductor layer, a second conductor layer disposed opposite to the first conductor layer, and a second conductor layer disposed between the first conductor layer and the second conductor layer; and an adhesive layer that adheres the second conductor layer and the second conductor layer, the adhesive layer containing the low dielectric adhesive according to [12] above.
- the low dielectric resin composition of the present invention contains a polyolefin resin as a resin component.
- the polyolefin resin contains a styrene elastomer (A) and a cyclic olefin polymer (B) having an alicyclic ring in its main chain in a specific ratio. Therefore, the low dielectric resin composition has excellent adhesion and low dielectricity, and also has excellent heat resistance, and in addition, has excellent affinity for thermosetting resins (compatibility, adhesion, etc.). ).
- the adhesion promoter, low dielectric adhesive composition, and low dielectric adhesive molded article of the present invention contain the above-mentioned low dielectric resin composition. Therefore, the adhesion promoter, low dielectric adhesion composition, and low dielectric adhesion molded product have excellent adhesion and low dielectricity, and also have excellent heat resistance. It has excellent affinity (compatibility, adhesion) with
- the laminate of the present invention has an insulating layer.
- the insulating layer includes the above-described low dielectric adhesion molded product. Therefore, in the laminate, the insulating layer has excellent adhesion and low dielectricity, and also has excellent heat resistance, and in addition, has excellent affinity for thermosetting resins (compatibility, adhesion, etc.). ).
- the low dielectric adhesive of the present invention contains the above-mentioned low dielectric resin composition. Therefore, low dielectric adhesives have excellent adhesion and low dielectric properties, as well as excellent heat resistance and, in addition, excellent affinity (compatibility, adhesion) with thermosetting resins. have
- the laminate of the present invention has an adhesive layer.
- the adhesive layer includes the low dielectric adhesive described above. Therefore, in the laminate, the adhesive layer has excellent adhesion and low dielectricity, as well as excellent heat resistance, and in addition, excellent affinity for thermosetting resins (compatibility, adhesion, etc.). ).
- FIG. 1 is a schematic diagram showing a copper-clad laminate as a first embodiment of the laminate.
- FIG. 2 is a schematic diagram showing a circuit board as a second embodiment of the laminate.
- FIG. 3 is a schematic diagram showing a copper-clad laminate as a third embodiment of the laminate.
- FIG. 4 is a schematic diagram showing a circuit board as a fourth embodiment of the laminate.
- FIG. 5A shows a step of preparing a carrier-attached copper foil in a process diagram for manufacturing a circuit board as a fifth embodiment of the laminate
- FIG. 5B shows a step of forming a first resist layer
- FIG. 5C shows the step of forming the first conductor layer.
- FIG. 5A shows a step of preparing a carrier-attached copper foil in a process diagram for manufacturing a circuit board as a fifth embodiment of the laminate
- FIG. 5B shows a step of forming a first resist layer
- FIG. 5C shows the step of forming the first conductor layer.
- FIG. 6D shows a step of removing the first resist layer in a process diagram for manufacturing a circuit board following FIG. 5, and FIG. 6E shows a step of removing copper foil exposed from the first conductor layer.
- FIG. 6F shows the step of laminating the adhesive layer
- FIG. 6G shows the step of laminating the carrier-attached copper foil on the adhesive layer.
- 7H shows a step of peeling off a carrier layer in a process diagram for manufacturing a circuit board following FIG. 6,
- FIG. 7I shows a step of forming a via hole, and
- FIG. 7J shows a step of forming a via fill.
- FIG. 7K shows a step of forming a second resist layer.
- FIG. 8L shows a step of forming a second conductor layer in a process diagram for manufacturing a circuit board following FIG. 7,
- FIG. 8M shows a step of removing a second resist layer, and
- FIG. 8N shows a step of forming a second conductor layer.
- FIG. 8O shows the step of removing the copper foil exposed from the second conductor layer, and
- FIG. 8O shows the step of peeling off the carrier layer.
- the low dielectric resin composition is, for example, a resin composition contained in an insulating layer (described later) or an adhesive layer (described later) in a laminate described below.
- the low dielectric resin composition contains a polyolefin resin.
- the polyolefin resin contains a styrene elastomer (A) and a cyclic olefin polymer (B) having an alicyclic ring in its main chain.
- Styrenic elastomer examples include copolymers of styrene and chain olefin.
- Examples of the chain olefin include chain olefins having 2 to 8 carbon atoms.
- Examples of the chain olefin having 2 to 8 carbon atoms include ethylene, propylene, butylene (butene), pentene, hexene, octene, and 3-methyl-1-pentene. These can be used alone or in combination of two or more.
- As the chain olefin preferably ethylene is used alone, propylene is used alone, and ethylene and propylene are used in combination.
- a combination of ethylene and propylene is more preferably used.
- the styrenic elastomer (A) is produced by a known method. For example, styrene and a chain olefin are polymerized in the presence of a known initiator (eg, an alkyllithium compound). Thereby, a styrenic elastomer (A) is obtained. Note that the polymerization conditions are appropriately set depending on the purpose and use.
- the styrenic elastomer (A) contains a structural unit derived from styrene and a structural unit derived from a chain olefin.
- the styrenic elastomer (A) consists of a structural unit derived from styrene and a structural unit derived from a chain olefin.
- the content of structural units derived from styrene is, for example, 5% by mass or more, preferably 10% by mass or more, based on the total amount of the styrene elastomer (A). Preferably, it is 15% by mass or more.
- the content of structural units derived from styrene is, for example, 50% by mass or less, preferably 40% by mass or less, more preferably , 30% by mass or less.
- the content of structural units derived from chain olefins is, for example, 50% by mass or more, preferably 60% by mass or more, based on the total amount of the styrene elastomer (A). Preferably, it is 70% by mass or more.
- the content of structural units derived from chain olefins is, for example, 95% by mass or less, preferably 90% by mass or less, based on the total amount of the styrenic elastomer (A). % or less, more preferably 85% by mass or less.
- the content ratio of structural units derived from styrene and the content ratio of structural units derived from chain olefins are calculated based on the formulation of the polymerization raw materials of the styrenic elastomer (A). More specifically, the content ratio of structural units derived from styrene is calculated as the ratio of styrene to the total amount of polymerization raw materials (styrene and chain olefin). Further, the content ratio of the structural units derived from chain olefins is calculated as the ratio of chain olefins to the total amount of polymerization raw materials (styrene and chain olefins).
- the styrenic elastomer (A) preferably contains a structural unit derived from ethylene as a structural unit derived from a chain olefin. Note that the content ratio of structural units derived from ethylene is appropriately set depending on the purpose and use.
- the styrenic elastomer (A) preferably contains a structural unit derived from propylene as a structural unit derived from a chain olefin. Note that the content rate of the structural unit derived from propylene is appropriately set depending on the purpose and use.
- the styrene elastomer (A) may contain a structural unit derived from butylene as a structural unit derived from a chain olefin, if necessary. Note that the content ratio of the structural unit derived from butylene is appropriately set depending on the purpose and use.
- the content of structural units derived from styrene in the styrene elastomer (A) is relatively low, it is preferable to contain structural units derived from butylene from the viewpoint of affinity for thermosetting resins. The percentage is relatively low.
- the content ratio of the structural units derived from styrene is preferably set to be relatively high.
- the content ratio of the structural units derived from styrene is relative to the total amount of the styrene elastomer (A). For example, it is 10% by mass or more, preferably 20% by mass or more, particularly preferably 25% by mass or more. Further, the content of structural units derived from styrene is preferably 90% by mass or less, more preferably 85% by mass or less, based on the total amount of the styrene elastomer (A).
- the styrenic elastomer (A) does not contain a structural unit derived from butylene. More specifically, when the content of structural units derived from styrene in the styrenic elastomer (A) is less than 25% by mass, the styrenic elastomer (A) is preferably derived from a chain olefin. It does not contain a structural unit derived from butylene as a structural unit.
- the styrene elastomer (A) when the content of structural units derived from styrene in the styrene elastomer (A) is relatively high (for example, 25% by mass or more), the styrene elastomer (A) has a structure derived from butylene. units may be included. Furthermore, when the content of structural units derived from styrene is relatively high, the styrenic elastomer (A) does not need to contain structural units derived from butylene.
- the styrenic elastomer (A) particularly preferably contains structural units derived from styrene in a proportion of 25% by mass or more and also contains structural units derived from butylene. Contains structural units derived from styrene in a ratio of 25% by mass or more, and contains structural units derived from butylene, or contains structural units derived from styrene in a ratio of less than 25% by mass and does not contain structural units derived from butylene.
- examples of the styrene elastomer (A) include styrene-ethylene-propylene copolymer (SEP), styrene-ethylene-propylene-styrene copolymer (SEPS), styrene-ethylene-ethylene-propylene- Examples include styrene block copolymer (SEEPS), styrene-butadiene-styrene copolymer (SBS), styrene-ethylene-butylene-styrene copolymer (SEBS), and styrene-isobutylene-styrene copolymer (SIBS).
- examples of the copolymer include a random copolymer and a block copolymer (the same applies hereinafter). These can be used alone or in combination of two or more.
- the styrene elastomer (A) is preferably a styrene-ethylene-propylene copolymer (SEP), a styrene-ethylene-propylene-styrene copolymer (SEPS), or a styrene-ethylene-propylene copolymer (SEP).
- SEP styrene-ethylene-propylene copolymer
- SEPS styrene-ethylene-propylene-styrene copolymer
- SEP styrene-ethylene-propylene copolymer
- SBS butadiene-styrene copolymer
- SEBS styrene-ethylene-butylene-styrene copolymer
- SEPS styrene-ethylene-propylene-styrene copolymer
- SEBS butylene-styrene copolymer
- the styrenic elastomer (A) is more preferably a styrene elastomer (A) that does not contain a structural unit derived from butylene. More specifically, styrene-ethylene-propylene-styrene copolymer (SEPS) can be mentioned.
- SEPS styrene-ethylene-propylene-styrene copolymer
- the styrenic elastomer (A) preferably contains a structural unit derived from butylene and is derived from styrene.
- a styrenic elastomer (A) containing a relatively large number of structural units can also be mentioned.
- the content of structural units derived from butylene is preferably 20% by mass or more, particularly preferably 25% by mass or more, based on the total amount of the styrenic elastomer (A), as described above. .
- the styrene elastomer (A) is more preferably a styrene elastomer (A) that does not contain a structural unit derived from butylene, and a styrene elastomer (A) that contains a structural unit derived from butylene and contains a structural unit derived from styrene.
- examples include styrene elastomer (A) containing 25% by mass or more.
- styrenic elastomers (A) that do not contain structural units derived from butylene, and more specifically, , styrene-ethylene-propylene-styrene copolymer (SEPS).
- SEPS styrene-ethylene-propylene-styrene copolymer
- the weight average molecular weight of the styrene elastomer (A) is, for example, 10,000 or more, preferably 30,000 or more, more preferably 50,000 or more, still more preferably 70,000 or more, particularly preferably is over 90,000.
- the weight average molecular weight of the styrene elastomer (A) is, for example, 500,000 or less, preferably 300,000 or less, more preferably , 200,000 or less, more preferably 110,000 or less, particularly preferably 100,000 or less.
- weight average molecular weight of the styrene elastomer (A) is measured as a standard polystyrene equivalent molecular weight by gel permeation chromatography.
- the styrenic elastomer (A) is used alone or in combination of two or more. Moreover, a commercially available product can also be used as the styrene elastomer (A).
- Examples of commercially available styrenic elastomers (A) include the SEPTON series (manufactured by Kuraray), the Kraton series (manufactured by Kraton Polymer Japan), and the TUFTEC series (manufactured by Asahi Kasei).
- Cyclic olefin polymer examples of the cyclic olefin polymer (B) having an alicyclic ring in the main chain include cyclic olefin polymers and hydrogenated products thereof.
- the cyclic olefin examples include cyclic hydrocarbon compounds containing ethylenically unsaturated bonds.
- Examples of the cyclic hydrocarbon compound include cyclic hydrocarbon compounds having 6 to 30 carbon atoms. More specifically, the cyclic olefin includes, for example, bicyclo[2.2.1]-hept-2-ene (also known as norbornene) and its derivatives, tricyclo[4.3.0.1 2.5 ]-3- Decene and its derivatives, tricyclo[4.4.0.1 2.5 ]-3-decene and its derivatives, tetracyclo[4.4.0.1 2,5 . 1 7,10 ]-3-dodecene and its derivatives, pentacyclo[6.5.1.1 3.6 .
- the cyclic olefin polymer is produced by a known method.
- a cyclic olefin is subjected to ring-opening metathesis polymerization using a known method. Thereby, a ring-opening metathesis polymer of cyclic olefin is obtained.
- the polymerization conditions are appropriately set depending on the purpose and use.
- the ring-opening metathesis polymer of cyclic olefin can be hydrogenated by a known method. As a result, a hydrogenated product of a ring-opening metathesis polymer of a cyclic olefin is obtained.
- the cyclic olefin polymer and its hydride can be used alone or in combination of two or more.
- Examples of the cyclic olefin polymer (B) having an alicyclic ring in the main chain include copolymers of cyclic olefins and chain olefins (cyclic olefin copolymers) and hydrides thereof.
- cyclic olefin examples include the above-mentioned cyclic hydrocarbon compounds, and preferably tetracyclo[4.4.0.1 2,5 . 1 7,10 ]-3-dodecene and its derivatives, more preferably tetracyclo[4.4.0.1 2,5 . 1 7,10 ]-3-dodecene.
- chain olefin examples include the above-mentioned chain olefins having 2 to 8 carbon atoms, and preferably ethylene.
- a copolymer of a chain olefin and a cyclic olefin is produced by a known method.
- a chain olefin and a cyclic olefin are polymerized in the presence of a known catalyst (eg, a vanadium catalyst, an aluminum catalyst, and a metallocene catalyst).
- a catalyst eg, a vanadium catalyst, an aluminum catalyst, and a metallocene catalyst.
- the copolymer of a chain olefin and a cyclic olefin can be hydrogenated by a known method. Thereby, a hydrogenated product of a copolymer of a chain olefin and a cyclic olefin is obtained.
- Copolymers of chain olefins and cyclic olefins and hydrides thereof can be used alone or in combination of two or more.
- the cyclic olefin polymer (B) is a copolymer of a chain olefin and a cyclic olefin.
- the cyclic olefin polymer (B) preferably contains a structural unit derived from a chain olefin and a structural unit derived from a cyclic olefin.
- the cyclic olefin polymer (B) consists of a structural unit derived from a chain olefin and a structural unit derived from a cyclic olefin.
- the content ratio of structural units derived from chain olefins and the content ratio of structural units derived from cyclic olefins are appropriately set depending on the purpose and use. For example, in order to adjust the weight average molecular weight and glass transition temperature of the cyclic olefin polymer (B), the content ratio of structural units derived from chain olefins and the content ratio of structural units derived from cyclic olefins may be adjusted as appropriate. Set.
- the weight average molecular weight of the cyclic olefin polymer (B) is, for example, 10,000 or more, preferably 50,000 or more, more preferably 80,000 or more, still more preferably 100,000 or more, particularly preferably is over 112,000.
- the weight average molecular weight of the cyclic olefin polymer (B) is, for example, 500,000 or less, preferably 300,000 or less, more preferably 200,000 or less, still more preferably 150,000 or less, particularly preferably 11. 80,000 or less.
- the weight average molecular weight of the cyclic olefin polymer (B) is measured as a standard polystyrene equivalent molecular weight by gel permeation chromatography.
- the glass transition temperature of the cyclic olefin polymer (B) is, for example, 60°C or higher, preferably 70°C or higher, more preferably 80°C or higher, still more preferably 90°C or higher, and particularly preferably is 100°C or higher.
- the glass transition temperature of the cyclic olefin polymer (B) is preferably, for example, 200°C or less. is 175°C or lower, more preferably 150°C or lower, further preferably 140°C or lower, even more preferably 130°C or lower, even more preferably 120°C or lower, particularly preferably 110°C or lower.
- the glass transition temperature of the cyclic olefin polymer (B) is measured in accordance with JIS K 7122 (2012).
- the cyclic olefin polymer (B) is used alone or in combination of two or more types. Moreover, a commercially available product can also be used as the cyclic olefin polymer (B).
- cyclic olefin polymer (B) Commercial products of the cyclic olefin polymer (B) include, for example, the product name ZEONEX series (hydrides of cyclic monomer polymers, manufactured by Nippon Zeon) and the product name ZEONOR series (hydrides of cyclic monomer polymers, manufactured by Nippon Zeon). and the trade name APEL series (copolymer of chain olefin and cyclic olefin, manufactured by Mitsui Chemicals).
- Blending ratio A polyolefin resin can be obtained by mixing the above styrene elastomer (A) and the above cyclic olefin polymer (B) by a known method.
- the polyolefin resin is obtained by melt-kneading the styrene elastomer (A) and the above-mentioned cyclic olefin polymer (B) in a twin-screw extruder.
- the blending ratio of the styrene elastomer (A) and the cyclic olefin polymer (B) is adjusted within a specific range.
- the proportion is 30 parts by mass or more, preferably 35 parts by mass or more, more preferably 40 parts by mass or more, still more preferably 45 parts by mass or more.
- the content of the styrene elastomer (A) is preferably 89 parts by mass or less with respect to 100 parts by mass of the total amount of the styrene elastomer (A) and the cyclic olefin polymer (B). is 85 parts by mass or less, more preferably 80 parts by mass or less, still more preferably 70 parts by mass or less, particularly preferably 60 parts by mass or less.
- the content ratio of the cyclic olefin polymer (B) is 11 parts by mass or more with respect to 100 parts by mass of the total amount of the styrene elastomer (A) and the cyclic olefin polymer (B),
- the amount is 15 parts by mass or more, more preferably 20 parts by mass or more, still more preferably 30 parts by mass or more, particularly preferably 40 parts by mass or more.
- the content ratio of the cyclic olefin polymer (B) is The amount is 70 parts by weight or less, preferably 65 parts by weight or less, more preferably 60 parts by weight or less, even more preferably 55 parts by weight or less.
- the low dielectric resin composition is excellent. It has good adhesion and low dielectricity, has excellent heat resistance, and has excellent affinity (compatibility, adhesion) with thermosetting resins.
- the content of the cyclic olefin polymer (B) is, for example, 12 parts by mass or more, preferably 25 parts by mass or more, and more preferably 50 parts by mass or more with respect to 100 parts by mass of the styrene elastomer (A). It is. Further, the content of the cyclic olefin polymer (B) is, for example, 235 parts by mass or less, preferably 185 parts by mass or less, more preferably 150 parts by mass or less, with respect to 100 parts by mass of the styrene elastomer (A). It is.
- the low dielectric resin composition has excellent adhesiveness and low dielectric properties, and also has excellent heat resistance. In addition, it has excellent affinity (compatibility, adhesion) with thermosetting resins.
- the polyolefin resin can contain other olefin polymers (C) if necessary.
- the other olefin polymers (C) are known olefin polymers excluding the styrene elastomer (A) and the cyclic olefin polymer (B).
- olefin polymers (C) include, for example, polyethylene, polypropylene, polyisobutylene, poly-1-butene, poly-4-methylpentene, ethylene-propylene copolymer, propylene-butene copolymer, ethylene-butene copolymer. ethylene/4-methyl-1-pentene copolymer, propylene/4-methyl-1-pentene copolymer, butylene/4-methyl-1-pentene copolymer, ethylene/hexene copolymer, and , ethylene/vinyl acetate copolymer. These can be used alone or in combination of two or more. Further, the content ratio of other olefin polymers is appropriately set within a range that does not impede the excellent effects of the present invention.
- the content of the other olefin polymer (C) is, for example, 30% by mass or less, preferably 20% by mass or less, more preferably 10% by mass or less, particularly preferably, It is 0% by mass. That is, the polyolefin resin preferably does not contain any other olefin polymer (C). In other words, the polyolefin resin preferably consists of a styrene elastomer (A) and a cyclic olefin polymer (B).
- the polyolefin resin may be an unmodified polyolefin resin or a modified polyolefin resin.
- the unmodified polyolefin resin is a polyolefin resin that contains a styrene elastomer (A) and a cyclic olefin polymer (B) and is not modified with a modifier (described later).
- the modified polyolefin resin includes a styrene elastomer (A) and a cyclic olefin polymer (B), and is modified with a modifier (described later). From the viewpoint of adhesion to metals (for example, the conductor layer described below), modified polyolefin resins are preferably used as the polyolefin resins.
- a modified polyolefin resin can be obtained, for example, by modifying a polyolefin resin with a known modifier.
- Examples of the modifier include functional group-containing monomers.
- Examples of the functional group-containing monomer include a carboxy group-containing monomer, a sulfonyl group-containing monomer, an amino group-containing monomer, a hydroxyl group-containing monomer, a glycidyl group-containing monomer, and a halogen-containing monomer. These can be used alone or in combination of two or more. From the viewpoint of adhesion to metals (for example, the conductor layer described below), the functional group-containing monomer is preferably a carboxy group-containing monomer.
- Examples of the carboxy group-containing monomer include unsaturated acids.
- Examples of unsaturated acids include maleic acid, fumaric acid, itaconic acid and (meth)acrylic acid.
- examples of the unsaturated acids include anhydrides thereof. These can be used alone or in combination of two or more.
- the carboxy group-containing monomer includes maleic acid and its anhydride, more preferably maleic anhydride.
- modified polyolefin resins include acid-modified polyolefin resins.
- acid-modified polyolefin resins include (anhydrous) maleic acid-modified polyolefin resins, (anhydrous) fumaric acid-modified polyolefin resins, (anhydrous) itaconic acid-modified polyolefin resins, and (meth)acrylic acid-modified polyolefin resins.
- the modified polyolefin resin includes a maleic anhydride-modified polyolefin resin.
- the method for obtaining the modified polyolefin resin is not particularly limited.
- an unmodified polyolefin resin and a modifier are reacted by a known method.
- a modifier is added when mixing the styrene elastomer (A) and the cyclic olefin polymer (B).
- a modifier is added to the styrenic elastomer (A) and/or the cyclic olefin polymer (B), and a modifier is added to the styrenic elastomer (A) and/or the cyclic olefin polymer (B).
- a modifier is added when mixing the styrene elastomer (A) and the cyclic olefin polymer (B).
- the amount of the modifier added is appropriately set depending on the purpose and use.
- the amount of the carboxyl group-containing monomer is, for example, 0.1 parts by mass with respect to 100 parts by mass of the styrene elastomer (A) and the cyclic olefin polymer (B). part or more, preferably 0.5 part or more by mass.
- the carboxy group-containing monomer is, for example, 20 parts by mass or less, preferably 10 parts by mass or less, more preferably, It is 5 parts by mass or less.
- a modification initiator is added as necessary.
- the modification initiator include known graft catalysts, and more specifically, known peroxides and known azo compounds.
- the blending ratio of the modification initiator is appropriately set depending on the purpose and use.
- the styrene elastomer (A), the cyclic olefin polymer (B), and the modifier are mixed and reacted to obtain a modified polyolefin resin.
- the reaction conditions are not particularly limited and are appropriately set depending on the type and amount of the modifier.
- modified polyolefin resins include a styrene elastomer (A) modified with a modifier (modified styrenic elastomer) and a cyclic olefin polymer (B) modified with a modifier (modified cyclic olefin polymer). contains. According to the modified polyolefin resin, it is possible to improve adhesion to metal (for example, a conductor layer described below).
- the acid value of the modified polyolefin resin is, for example, 0.1 mgKOH/g or more, preferably 0.5 mgKOH/g or more. Further, the acid value of the modified polyolefin resin is, for example, 100 mgKOH/g or less, preferably 60 mgKOH/g or less. Note that the acid value is measured in accordance with JIS K 2501 (2003).
- Non-polyolefin resin in the low dielectric resin composition, can contain a non-polyolefin resin in addition to the polyolefin resin described above.
- Non-polyolefin resins are known resins other than polyolefin resins. Examples of non-polyolefin resins include (meth)acrylic resins. These can be used alone or in combination of two or more.
- the resin component in the low dielectric resin composition preferably does not contain a non-polyolefin resin. That is, in the low dielectric resin composition, the resin component preferably consists of the above-mentioned polyolefin resin.
- the low dielectric resin composition may be diluted with an organic solvent. More specifically, the low dielectric resin composition may be dissolved and/or dispersed in an organic solvent. That is, a diluted solution (solution and/or dispersion) of the low dielectric resin composition may be prepared.
- the solid content concentration of the diluted liquid (solution and/or dispersion) of the low dielectric resin composition is, for example, 5% by mass or more, preferably 10% by mass or more. Further, the solid content concentration of the diluted liquid (solution and/or dispersion) of the low dielectric resin composition is, for example, 50% by mass or less, preferably 30% by mass or less.
- the low dielectric resin composition and/or its diluted solution can contain known additives.
- additives include plasticizers, antifoaming agents, leveling agents, fungicides, rust preventives, matting agents, flame retardants, thixotropic agents, tackifiers, thickeners, lubricants, antistatic agents, Surfactants, reaction retarders, antioxidants, ultraviolet absorbers, hydrolysis inhibitors, weathering stabilizers, heat stabilizers, dyes, inorganic pigments, organic pigments, curing agents, crosslinking agents, thermal initiators (thermal radical polymerization) (initiators), silane coupling agents, anti-tack agents, inorganic particles and organic particles. These can be used alone or in combination of two or more. The addition ratio and addition timing of the additive are appropriately set depending on the purpose and use.
- the above-mentioned low dielectric resin composition contains a polyolefin resin as a resin component.
- the polyolefin resin contains a styrene elastomer (A) and a cyclic olefin polymer (B) having an alicyclic ring in its main chain in a specific ratio. Therefore, the low dielectric resin composition has excellent adhesion and low dielectricity, and also has excellent heat resistance, and in addition, has excellent affinity for thermosetting resins (compatibility, adhesion, etc.). ).
- the relative dielectric constant (measurement conditions: 10 GHz) of the low dielectric resin composition (solid content) is, for example, 1.5 or more, preferably 1.9 or more. Further, the dielectric constant (measurement conditions: 10 GHz) of the low dielectric resin composition (solid content) is, for example, 3.0 or less, preferably 2.5 or less. Note that the dielectric constant is measured in accordance with the examples described later (the same applies hereinafter).
- the dielectric loss tangent (measurement conditions: 10 GHz) of the low dielectric adhesive composition (solid content) is, for example, 0.0001 or more, preferably 0.0003 or more. Further, the dielectric loss tangent (measurement conditions: 10 GHz) of the low dielectric adhesive composition (solid content) is, for example, 0.004 or less, preferably 0.002 or less. Note that the dielectric constant is measured in accordance with Examples described later.
- Such a low dielectric resin composition is suitably used as an adhesion promoter and/or a low dielectric adhesive in the production of a laminate.
- Laminate A laminate is a circuit board or circuit board material.
- a circuit board is, for example, a laminate including a conductor layer (circuit layer) having a circuit pattern.
- the circuit board material is a laminate that can be processed into a circuit board. More specifically, the circuit board material is, for example, a laminate that includes a conductor layer (non-circuit layer) without a circuit pattern and can be processed to form a circuit pattern. Examples of circuit board materials include copper-clad laminates.
- the laminate is manufactured by using a low dielectric resin composition.
- a method for producing a circuit board or circuit board material as a laminate using a low dielectric resin composition will be described in detail.
- FIG. 1 is a schematic cross-sectional view showing a copper-clad laminate as a first embodiment of the laminate.
- the low dielectric resin composition described above is used as an adhesion promoter.
- a copper-clad laminate 1 includes an insulating layer 2 having adhesive properties (hereinafter referred to as an adhesive insulating layer) 2 and a conductor layer 4 disposed on at least one surface of the adhesive insulating layer 2. It is equipped with
- the adhesive insulating layer 2 includes a resin molded product having low dielectricity and adhesiveness (hereinafter referred to as a low dielectric adhesive molded product).
- the adhesive insulating layer 2 preferably consists of a low dielectric adhesion molding, or of an impregnated base material and a low dielectric adhesion molding.
- the low dielectric adhesive molded product is, for example, a molded and cured product of the following low dielectric adhesive composition (molding material).
- the low dielectric adhesive composition contains, for example, a thermosetting resin (uncured thermosetting resin) and an adhesion promoter (additive).
- thermosetting resins examples include epoxy resins, polyphenylene ether resins, fluororesins, polyimide resins, phenol resins, melamine resins, polyolefin resins having unsaturated double bonds, and liquid crystal polymers. These may be used alone or in combination of two or more.
- the thermosetting resin is a polyphenylene ether resin.
- thermosetting resin is at least one selected from the group consisting of epoxy resins, polyphenylene ether resins, fluororesins, polyimide resins, phenol resins, melamine resins, polyolefin resins having unsaturated double bonds, and liquid crystal polymers.
- the thermosetting resin preferably includes polyphenylene ether resin.
- the thermosetting resin preferably consists of polyphenylene ether resin.
- the adhesion promoter contains the above low dielectric resin composition, and preferably consists of the above low dielectric resin composition.
- the low dielectric adhesive composition (molding material) is prepared, for example, by mixing a thermosetting resin and an adhesion promoter by a known method.
- the blending ratio of the thermosetting resin and the adhesion promoter is not particularly limited, but the adhesion promoter may be, for example, 1 part by mass or more, preferably 5 parts by mass or more, per 100 parts by mass of the thermosetting resin. be. Further, the amount of the adhesion promoter is, for example, 400 parts by mass or less, preferably 150 parts by mass or less, based on 100 parts by mass of the thermosetting resin.
- thermosetting resin accounts for, for example, 20% by mass or more, preferably 40% by mass or more, based on the total amount of the thermosetting resin and the adhesion promoter. Moreover, the thermosetting resin is, for example, 99% by mass or less, preferably 95% by mass or less, based on the total amount of the thermosetting resin and the adhesion promoter.
- the amount of the tackifier is, for example, 1% by mass or more, preferably 5% by mass or more, based on the total amount of the thermosetting resin and the tackifier. Furthermore, the amount of the tackifier is, for example, 80% by mass or less, preferably 60% by mass or less, based on the total amount of the thermosetting resin and the tackifier.
- the low dielectric adhesive composition can contain additives in addition to the thermosetting resin and the adhesion promoter.
- additives include plasticizers, antifoaming agents, leveling agents, fungicides, rust preventives, matting agents, flame retardants, thixotropic agents, tackifiers, thickeners, lubricants, antistatic agents, Surfactants, reaction retarders, antioxidants, ultraviolet absorbers, hydrolysis inhibitors, weathering stabilizers, heat stabilizers, dyes, inorganic pigments, organic pigments, curing agents, crosslinking agents, thermal initiators (thermal radical polymerization) (initiators), silane coupling agents, anti-tack agents, inorganic particles and organic particles. These can be used alone or in combination of two or more. The addition ratio and addition timing of the additive are appropriately set depending on the purpose and use.
- the low dielectric adhesive composition (molding material) preferably contains a thermal initiator.
- thermal initiators include organic peroxides.
- organic peroxides include dicumyl peroxide, 1-(2-t-butylperoxyisopropyl)-1-isopropylbenzene, 1-(2-t-butylperoxyisopropyl)-3-isopropylbenzene, 1,3-bis(t-butylperoxy-isopropyl)benzene, 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane, and 2,5-dimethyl-2,5-(tert -butylperoxy)-hexyne-3. These can be used alone or in combination of two or more.
- the amount of the thermal initiator added is, for example, 0.1 parts by mass or more, preferably 1.0 parts by mass, based on 100 parts by mass of the total amount of resin components of the adhesion promoter (low dielectric resin composition). That's all. Further, the amount of the thermal initiator added is, for example, 10 parts by mass or less, preferably 5 parts by mass or less, based on 100 parts by mass of the total amount of resin components of the adhesion promoter (low dielectric resin composition). be.
- the adhesive insulating layer 2 is made of a low dielectric adhesive molded product
- the adhesive insulating layer 2 is formed by molding and curing a low dielectric adhesive composition (molding material) by a known method. It is formed.
- a low dielectric adhesion composition (molding material) is applied to a known substrate (eg, a copper plate and a release liner), and dried if necessary.
- a coating film of the low dielectric adhesive composition (molding material) is obtained.
- the coating film is cured (thermocured) by heating.
- a low dielectric adhesive molded article (adhesive insulating layer 2) made of a cured product of the low dielectric adhesive composition (molding material) is obtained.
- the adhesive insulating layer 2 is made of an impregnated base material and a low dielectric adhesive molded product
- the adhesive insulating layer 2 is formed by impregnating the impregnated base material with a low dielectric adhesive composition (molding material), It is formed by drying and curing.
- a glass cloth serving as an impregnated base material is impregnated with a low dielectric adhesive composition (molding material), and dried if necessary. Then, the glass cloth and the low dielectric adhesive composition (molding material) impregnated into the glass cloth are cured (thermocured) by heating.
- a low dielectric adhesive composition molding material
- a low dielectric adhesive molded article (adhesive insulating layer 2) containing the glass cloth and a cured product of the low dielectric adhesive composition (molding material) is obtained.
- the shape and size of the low dielectric adhesive molded product are appropriately set depending on the purpose and use.
- the conductor layer 4 is a thin film made of a known conductive material. Examples of the conductive material include copper.
- the conductor layer 4 is formed by a known film forming method. The thickness of the conductor layer 4 is adjusted to be relatively thin, for example. Thereby, a circuit pattern can be formed by the subtractive method. The thickness of the conductor layer 4 is, for example, 50 ⁇ m or less.
- the conductor layer 4 is arranged on at least one surface of the adhesive insulating layer 2.
- the conductor layer 4 is preferably arranged on both sides of the adhesive insulating layer 2.
- conductive layer 4 is arranged on both sides of adhesive insulating layer 2.
- FIG. 1 In FIG. 1, conductive layer 4 is arranged on both sides of adhesive insulating layer 2.
- the conductor layer 4 is formed by a known method so as to be in contact with the surface of the adhesive insulating layer 2. Thereby, the conductor layer 4 is adhered to the adhesive insulating layer 2. As a result, a copper-clad laminate 1 comprising an adhesive insulating layer 2 and a conductor layer 4 is obtained.
- the method for obtaining the copper-clad laminate 1 is not limited to the above.
- a conductor layer 4 made of metal foil is prepared.
- a low dielectric adhesive composition (molding material) is applied to the conductor layer 4 and dried if necessary. Thereafter, the low dielectric adhesive composition (molding material) is thermally cured. Thereby, the adhesive insulating layer 2 can be formed on the surface of the conductor layer 4.
- a copper-clad laminate 1 comprising an adhesive insulating layer 2 and a conductor layer 4 in contact with the surface of the adhesive insulating layer 2 is obtained.
- the above copper clad laminate 1 has an insulating layer 2.
- the insulating layer 2 includes the above-described low dielectric adhesion molded product. Therefore, in the copper-clad laminate 1, the insulating layer 2 has excellent adhesion and low dielectricity, and also has excellent heat resistance, and in addition, has excellent affinity (compatibility) with thermosetting resins. Therefore, it has excellent strength.
- the above-mentioned adhesion promoter (additive), low dielectric adhesive composition (molding material), and low dielectric adhesive molded product (adhesive insulating layer 2) contain the above low dielectric adhesive resin composition. Therefore, the adhesion promoter (additive), the low dielectric adhesive composition (molding material), and the low dielectric adhesive molded product (adhesive insulating layer 2) have excellent adhesive properties and low dielectric properties, and further, It has excellent heat resistance, and in addition, it has excellent affinity (compatibility) with thermosetting resins, and therefore has excellent strength.
- FIG. 2 is a schematic cross-sectional view showing a circuit board as a second embodiment of the laminate.
- the above-mentioned low dielectric resin composition is used as an adhesion promoter.
- the circuit board 11 can be formed by processing the copper-clad laminate 1 of the first embodiment described above. That is, the circuit 14 can be formed by etching the conductor layer 4 of the copper-clad laminate 1 by a known method. As a result, as shown in FIG. 2, a circuit board 11 as a second embodiment of the laminate is formed.
- the adhesive insulating layer 2 includes a low dielectric adhesive molded product. Therefore, in the circuit board 11, the adhesive insulating layer 2 has excellent adhesiveness and low dielectricity, and also has excellent heat resistance, and in addition, has excellent affinity (compatibility) with thermosetting resins. Therefore, it has excellent strength.
- FIG. 3 is a schematic cross-sectional view showing a copper-clad laminate as a third embodiment of the laminate.
- the above-described low dielectric resin composition is used as a low dielectric adhesive.
- the copper-clad laminate 21 is arranged between an insulating layer 22, a conductor layer 24 facing the insulating layer 22, and between the insulating layer 22 and the conductor layer 24. It is provided with an adhesive layer 23 for adhesion. Further, in the copper-clad laminate 21, the adhesive layer 23 is formed from the above-mentioned low dielectric adhesive.
- the insulating layer 22 is, for example, an insulating layer that does not have adhesive properties (non-adhesive insulating layer).
- the insulating layer 22 contains, for example, the above thermosetting resin.
- the insulating layer 22 is preferably made of the above thermosetting resin.
- the conductor layer 24, like the conductor layer 4 described above, is a thin film made of a known conductive material. Examples of the conductive material include copper.
- the conductor layer 24 is formed by a known film forming method. The thickness of the conductor layer 24 is adjusted to be relatively thin, for example. Thereby, a circuit pattern can be formed by the subtractive method. The thickness of the conductor layer 24 is, for example, 50 ⁇ m or less.
- Adhesive layer 23 is interposed between insulating layer 22 and conductor layer 24 .
- the adhesive layer 23 is a dried low dielectric adhesive.
- the low dielectric adhesive includes, for example, the low dielectric resin composition described above.
- the low dielectric adhesive is preferably a dilute solution of the above low dielectric resin composition.
- the insulating layer 22 and the conductor layer 24 are prepared. Next, a low dielectric adhesive is applied to one side of the insulating layer 22. Thereafter, the conductor layer 24 is adhered to one side of the low dielectric adhesive, and the low dielectric adhesive is dried. Thereby, a copper-clad laminate 21 is obtained.
- the copper-clad laminate 21 can also be manufactured in the reverse order. That is, in this method, a low dielectric adhesive is applied to one side of the conductor layer 24. Thereafter, the insulating layer 22 is adhered to one side of the low dielectric adhesive, and the low dielectric adhesive is dried. Thereby, a copper-clad laminate 21 is obtained.
- the insulating layer 22 and the conductor layer 24 are bonded together with an adhesive layer 23 (low dielectric adhesive). That is, the copper-clad laminate 21 has the adhesive layer 23.
- the adhesive layer 23 (low dielectric adhesive) contains the above-mentioned low dielectric resin composition. Therefore, in the copper-clad laminate 21, the adhesive layer 23 (low dielectric adhesive) has excellent adhesiveness and low dielectric property, and also has excellent heat resistance. Has excellent affinity (adhesion).
- the adhesive layer 23 and the conductor layer 24 are formed only on one side of the insulating layer 22; It may be formed on both sides of 22. Moreover, in such a case, the copper-clad laminate 21 does not need to have the insulating layer 22. That is, the conductor layer 24 may be formed on both sides of the adhesive layer 23. In other words, the two conductor layers 24 may be bonded together by the adhesive layer 23. In such a case, the adhesive layer 23 also serves as the insulating layer 22.
- FIG. 4 is a schematic cross-sectional view showing a circuit board as a fourth embodiment of the laminate.
- the above-described low dielectric resin composition is used as a low dielectric adhesive.
- the circuit board 31 can be formed by processing the copper-clad laminate 21 of the third embodiment described above. More specifically, the circuit 34 can be formed by etching the conductor layer 24 of the copper-clad laminate 21 using a known method. As a result, as shown in FIG. 4, a circuit board 31 as a fourth embodiment of the laminate is formed.
- the insulating layer 22 and the circuit 34 made of a conductor layer are bonded together by the adhesive layer 23.
- the insulating layer 22 and the circuit 34 made of a conductor layer are bonded together by an adhesive layer 23 (low dielectric adhesive).
- the adhesive layer 23 (low dielectric adhesive) contains the above-mentioned low dielectric resin composition. Therefore, in the circuit board 31, the adhesive layer 23 (low dielectric adhesive) has excellent adhesiveness and low dielectric property, and also has excellent heat resistance, and in addition, has excellent resistance to thermosetting resin. Has affinity (adhesion).
- the adhesive layer 23 and the circuit 34 are formed only on one side of the insulating layer 22; however, the adhesive layer 23 and the circuit 34 are formed on both sides of the insulating layer 22. may be formed. Further, in such a case, the circuit board 31 does not need to have the insulating layer 22. That is, the circuit 34 may be formed on both sides of the adhesive layer 23. In other words, the two circuits 34 may be bonded together by the adhesive layer 23. In such a case, the adhesive layer 23 also serves as the insulating layer 22.
- FIGS. 5 to 8 are cross-sectional views of steps for manufacturing a circuit board as a fifth embodiment of the laminate.
- the above-described low dielectric resin composition is used as a low dielectric adhesive.
- the circuit board 41 is a multilayer circuit board having at least two conductor layers. More specifically, as shown in FIG. 8O, the circuit board 41 includes a first conductor layer 40, a second conductor layer 50 disposed opposite to the first conductor layer 40, a first conductor layer 40, and a second conductor layer 50 disposed opposite to the first conductor layer 40.
- the adhesive layer 51 is disposed between the second conductor layers 50 and adheres the first conductor layer 40 and the second conductor layer 50. Further, in the circuit board 41, the adhesive layer 51 is formed from the above-mentioned low dielectric adhesive (preferably a diluted solution of the low dielectric resin composition).
- a carrier-attached copper foil 442 is prepared.
- the carrier-attached copper foil 442 includes a carrier layer 43 and a copper foil 44 laminated on one side of the carrier layer 43.
- the carrier layer 43 is not particularly limited, and examples thereof include known release sheets. Copper foil 44 is laminated on carrier layer 43 by a known method. The thickness of the copper foil 44 is appropriately set depending on the purpose and use. Further, the copper foil 44 is surface-treated if necessary. Examples of the surface treatment include roughening treatment.
- a first resist layer 45 having a predetermined shape is formed on one surface of the copper foil 44, as shown in FIG. 5B.
- the first resist layer 45 is formed, for example, by applying a known resist solution, exposing it to light, and developing it.
- the first resist layer 45 can also be formed by exposing and etching a dry film resist.
- a first plating layer 46 is formed as shown in FIG. 5C.
- the first plating layer 46 is formed, for example, by electrolytic plating.
- the carrier layer 43, the copper foil 44, and the first resist layer 45 are immersed in an electrolytic plating solution, and then the copper foil 44 is supplied with electricity.
- a first plating layer 46 is formed on one surface of the copper foil 44 in a pattern opposite to that of the first resist layer 45. That is, the first plating layer 46 has a circuit pattern.
- the first resist layer 45 is removed by a known method.
- the copper foil 44 exposed from the first plating layer 46 is removed by a known method.
- the first conductor layer 40 is formed, which includes the copper foil 44 remaining without being removed and the first plating layer 46 laminated on the copper foil 44. That is, the first conductor layer 40 includes a copper foil 44 and a first plating layer 46.
- the first conductor layer 40 preferably consists of a copper foil 44 and a first plating layer 46.
- an adhesive layer 51 made of a low dielectric adhesive is laminated on the carrier layer 43, the first plating layer 46, and the copper foil 44.
- a cast film of a low dielectric adhesive is created.
- the cast film is pressure-bonded to the carrier layer 43, the first plating layer 46, and the copper foil 44. Thereby, the cast film covers the first plating layer 46 and the copper foil 44.
- the cast film also forms the adhesive layer 51.
- the carrier-attached copper foil 52 is separately prepared.
- the carrier-attached copper foil 52 includes a carrier layer 53 and a copper foil 54 laminated on the other side of the carrier layer 53.
- the copper foil 54 of the carrier-attached copper foil 52 is laminated on the adhesive layer 51, as shown in FIG. 6G.
- the carrier layer 53 of the carrier-attached copper foil 52 is peeled off, as shown in FIG. 7H.
- the copper foil 54 and the adhesive layer 51 are opened by a known method to form a via hole 58.
- the first plating layer 46 is exposed from the via hole 58.
- the via hole 58 is filled with a conductive material to form a via fill 59, as shown in FIG. 7J.
- the conductive material includes, for example, copper.
- a second resist layer 55 having a predetermined shape is formed on one surface of the copper foil 54.
- the second resist layer 55 is formed, for example, by applying a known resist solution, exposing it to light, and developing it. Further, like the first resist layer 45, the second resist layer 55 can also be formed from a dry film resist.
- a second plating layer 56 is formed as shown in FIG. 8L.
- the second plating layer 56 is formed, for example, by electrolytic plating.
- a second plating layer 56 is formed on one surface of the copper foil 54 in a pattern opposite to that of the second resist layer 55. That is, the second plating layer 56 has a circuit pattern.
- the second resist layer 55 is removed by a known method.
- the copper foil 54 exposed from the second plating layer 56 is removed by a known method.
- the second conductor layer 50 is formed, which includes the copper foil 54 remaining without being removed and the first plating layer 56 laminated on the copper foil 54. That is, the second conductor layer 50 includes the copper foil 54 and the second plating layer 56.
- the second conductor layer 50 preferably includes a copper foil 54 and a second plating layer 56.
- the carrier layer 43 is peeled off, as shown in FIG. 8O. This exposes the copper foil 44. As a result, a circuit board 1 is formed.
- the first conductor layer 40 and the second conductor layer 50 are bonded together with an adhesive layer 51 (low dielectric adhesive). That is, the circuit board 41 has the adhesive layer 51.
- the adhesive layer 51 (low dielectric adhesive) contains the above-mentioned low dielectric resin composition. Therefore, in the circuit board 41, the adhesive layer 51 (low dielectric adhesive) has excellent adhesive properties and low dielectric properties, and also has excellent heat resistance.
- Preparation example 1-1 (styrene elastomer) As shown in Tables 1 to 4, the following commercial products were prepared as styrenic elastomers. SEPTON 2063; Styrene-ethylene-propylene-styrene copolymer (SEPS), styrene unit amount 13% by mass, weight average molecular weight (Mw) 100000 SEPTON 2002; Styrene-ethylene-propylene-styrene copolymer (SEPS), styrene unit amount 30% by mass, weight average molecular weight (Mw) 55000 Kraton G1730; Styrene-ethylene-propylene-styrene copolymer (SEPS), styrene unit amount 20% by mass, weight average molecular weight (Mw) 93000 Kraton G1652; Styrene-ethylene-butylene-styrene copolymer (SEBS), styrene unit amount
- ethylaluminum sesquichloride Al(C 2 H 5 ) 1.5 Cl 1.5
- the aluminum concentration of the catalyst solution was 107 mmol/L.
- the above vanadium catalyst solution was supplied to the polymerization vessel so that the vanadium catalyst concentration with respect to cyclohexane in the polymerization vessel was 0.6 mmol/L.
- the above aluminum catalyst solution was supplied to the polymerization vessel so that the molar ratio of aluminum to vanadium (Al/V) was 12.0.
- the polymerization temperature was 12°C.
- the polymerization pressure was 3.1 kg/cm 2 G (gauge pressure).
- Pentaerythritol-tetrakis [3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] as a stabilizer was added to the copolymer solution.
- the amount of stabilizer added was 0.4 parts by mass based on 100 parts by mass of the copolymer.
- the copolymer solution was stirred for 1 hour using a stirring tank (effective volume 1.0 cm 3 ).
- the solid content concentration of the copolymer was 5% by mass.
- a molten cyclic olefin polymer (B-1) was obtained.
- the glass transition temperature (Tg) of the cyclic olefin polymer (B-1) was measured in accordance with JIS K 7122 (2012). As a result, the glass transition temperature (Tg) of the cyclic olefin polymer (B-1) was 105°C. Further, the weight average molecular weight (in terms of polystyrene, measured by gel permeation chromatography) of the cyclic olefin polymer (B-1) was 113,000.
- the glass transition temperature (Tg) of the cyclic olefin polymer (B-2) was 125°C. Further, the weight average molecular weight (polystyrene equivalent, gel permeation chromatography measurement) of the cyclic olefin polymer (B-2) was 116,000.
- the glass transition temperature (Tg) of the cyclic olefin polymer (B-3) was 65°C. Further, the weight average molecular weight (polystyrene equivalent, gel permeation chromatography measurement) of the cyclic olefin polymer (B-3) was 110,000.
- the autoclave was degassed, and the copolymer (other olefin polymer (C-1)) was recovered with methanol. Thereafter, the copolymer (other olefin polymer (C-1)) was dried at 110° C. for 12 hours under reduced pressure.
- the melting point (Tm) of the other olefin polymer (C-1) was measured in accordance with JIS K 7122 (2012). As a result, the melting point (Tm) of the other olefin polymer (C-1) was 78.3°C. Further, the weight average molecular weight (Mw) of the other olefin polymer (C-1) was 300,000.
- Preparation Example 3-2 (Other olefin polymer (C-2)) The following commercial products were prepared as other olefin polymers (C-2).
- Product name Vistamaxx 6102; Propylene-ethylene copolymer (PER), styrene unit amount: 0% by mass, weight average molecular weight (Mw): 320,000, melting point: 107°C, manufactured by ExxonMobil Japan LLC
- Preparation Example 3-3 (Other olefin polymers (C-3)) The following commercial products were prepared as other olefin polymers (C-3).
- Product name Vistamaxx 3020FL; Propylene-ethylene copolymer (PER), styrene unit amount: 0% by mass, weight average molecular weight (Mw): 370,000, melting point: 64°C, manufactured by ExxonMobil Japan LLC
- Maleic anhydride (MAH) as a modifier was added to the resin component at a ratio of 1 part by mass to 100 parts by mass of the total amount of the resin component.
- 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane peroxide, modification initiator
- the amount of 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane added was 0.6 parts by mass based on 100 parts by mass of the total amount of resin components.
- the resin components were melt-kneaded at 230°C using a vented twin-screw kneading extruder.
- a low dielectric resin composition (D-1) was obtained.
- the low dielectric resin composition will be simply referred to as a resin composition.
- the resin composition (D-1) was cooled and pelletized. Thereafter, 100 parts by mass of pellets of resin composition (D-1) were dissolved in 400 parts by mass of toluene in a heated environment. Thereby, a solution of resin composition (D-1) (solid content concentration 20% by mass) was obtained.
- the dried coating film was formed into a rectangular shape, and the dielectric constant and dielectric loss tangent of the dried coating film were measured in accordance with JIS R1641 (2007). Note that in the measurement, a cavity resonator (vector network analyzer HP8510B (manufactured by Keysight Technologies)) was used. Moreover, the measurement frequency was set to 10 GHz.
- a solution of PPE and a solution of the above resin composition were mixed to obtain a mixed solution. Note that the mass ratio of PPE and resin composition (PPE:resin composition) was 7:3.
- the above mixed solution was applied to a glass plate and dried at 100°C for 1 minute. As a result, a dried coating film (film thickness of approximately 30 ⁇ m) of the mixed resin was obtained.
- the haze of the dried coating film was measured in accordance with JIS K7136 (2000).
- a haze meter (NDH 4000 (manufactured by Nippon Denshoku Kogyo Co., Ltd.)) was used. Then, the transparency of the dried coating film was evaluated by haze value and visual observation. The evaluation criteria are shown below.
- the entire coating film is homogeneous. Further, the haze is less than 25. 4; The entire coating film is homogeneous. Further, the haze is 25 or more. 3;
- the coating film has undergone phase separation. Phase-separated areas are uniformly distributed throughout the coating. 2; The coating film is phase separated. The phase separation area is non-uniform. The maximum length of the non-uniform portion is less than 1 cm. 1; The coating film is phase separated. The phase separation area is non-uniform. The maximum length of the non-uniform portion is 1 cm or more.
- the affinity of the resin composition for the thermosetting resin improves, the adhesiveness will also improve. Furthermore, if the affinity of the resin composition for the thermosetting resin is improved, the strength of the molded product will also be improved.
- the dried coating film of the resin composition was heat treated at 200°C for 3 hours. Thereafter, the shear storage modulus (G') of the dried coating film of the resin composition was measured.
- G' shear storage modulus
- a viscoelasticity measuring device MCR302 (manufactured by Anton Paar Japan) was used. Moreover, the measurement conditions were as follows.
- Shear storage modulus (G') at 200°C is 1500 Pa or more.
- Shear storage modulus (G') at 200° C. is 1000 Pa or more and less than 1500 Pa.
- Shear storage modulus (G') at 200°C is less than 1000 Pa.
- ⁇ When the resin composition and solvent are stirred and left to stand, the solution is a uniform liquid.
- ⁇ The mixture of the resin composition and the solvent is in a uniform gel state.
- ⁇ Precipitates are observed in the mixture of the resin composition and the solvent. Also, the entire mixture is non-uniform.
- Styrene unit amount Content ratio of structural units derived from styrene (mass%) SEPTON 2063; Styrene-ethylene-propylene-styrene copolymer (SEPS), styrene unit amount 13% by mass, weight average molecular weight (Mw) 100000, manufactured by Kuraray SEPTON 2002; Styrene-ethylene-propylene-styrene copolymer (SEPS) , styrene unit amount 30% by mass, weight average molecular weight (Mw) 55000, Kraton G1730 manufactured by Kuraray; styrene-ethylene-propylene-styrene copolymer (SEPS), styrene unit amount 20% by mass, weight average molecular weight (Mw) 93000, Kraton G1652 manufactured by Kraton Polymer Japan; Styrene-ethylene-butylene-styrene copolymer
- the low dielectric resin composition, adhesion promoter, low dielectric adhesive composition, low dielectric adhesive molded product, low dielectric adhesive, and laminate of the present invention are suitably used in the field of circuit boards.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
低誘電性樹脂組成物は、例えば、後述する積層体において、絶縁層(後述)または接着層(後述)に含まれる樹脂組成物である。低誘電性樹脂組成物は、ポリオレフィン系樹脂を含有する。
スチレン系エラストマー(A)としては、例えば、スチレンと、鎖状オレフィンとの共重合体が挙げられる。
鎖状オレフィンとして、さらに好ましくは、エチレンとプロピレンとの併用が挙げられる。
主鎖に脂環を有する環状オレフィン系ポリマー(B)としては、例えば、環状オレフィンの重合体およびその水素化物が挙げられる。
上記のスチレン系エラストマー(A)と、上記の環状オレフィン系ポリマー(B)とを、公知の方法で混合することにより、ポリオレフィン系樹脂が得られる。好ましくは、スチレン系エラストマー(A)と、上記の環状オレフィン系ポリマー(B)とを、二軸押出機内で溶融混錬することにより、ポリオレフィン系樹脂が得られる。
ポリオレフィン系樹脂は、必要に応じて、その他のオレフィン系ポリマー(C)を含有できる。その他のオレフィン系ポリマー(C)は、スチレン系エラストマー(A)と環状オレフィン系ポリマー(B)とを除く、公知のオレフィンポリマーである。
ポリオレフィン系樹脂は、無変性ポリオレフィン系樹脂であってもよく、変性ポリオレフィン系樹脂であってもよい。
低誘電性樹脂組成物において、樹脂成分は、上記したポリオレフィン系樹脂に加えて、非ポリオレフィン系樹脂を含有することができる。非ポリオレフィン系樹脂は、ポリオレフィン系樹脂を除く、公知の樹脂である。非ポリオレフィン系樹脂としては、例えば、(メタ)アクリル系樹脂が挙げられる。これらは、単独使用または2種類以上併用できる。
低誘電性樹脂組成物は、有機溶剤により希釈されていてもよい。より具体的には、低誘電性樹脂組成物は、有機溶剤に溶解および/または分散されていてもよい。つまり、低誘電性樹脂組成物の希釈液(溶液および/または分散液)が調製されていてもよい。
低誘電性樹脂組成物および/またはその希釈液は、公知の添加剤を含有できる。添加剤としては、例えば、可塑剤、消泡剤、レベリング剤、防カビ剤、防錆剤、艶消し剤、難燃剤、揺変剤、粘着付与剤、増粘剤、滑剤、帯電防止剤、界面活性剤、反応遅延剤、酸化防止剤、紫外線吸収剤、加水分解防止剤、耐候安定剤、耐熱安定剤、染料、無機顔料、有機顔料、硬化剤、架橋剤、熱開始剤(熱ラジカル重合開始剤)、シランカップリング剤、タック防止剤、無機粒子および有機粒子が挙げられる。これらは、単独使用または2種類以上併用できる。添加剤の添加割合および添加タイミングは、目的および用途に応じて、適宜設定される。
上記の低誘電性樹脂組成物は、樹脂成分として、ポリオレフィン系樹脂を含有する。そして、ポリオレフィン系樹脂が、スチレン系エラストマー(A)と、主鎖に脂環を有する環状オレフィン系ポリマー(B)とを、特定割合で含有する。そのため、低誘電性樹脂組成物は、優れた接着性および低誘電性を有し、さらに、優れた耐熱性を有し、加えて、熱硬化性樹脂に対する優れた親和性(相溶性、密着性)を有する。
なお、比誘電率は、後述する実施例に準拠して、測定される(以下同様)。
積層体は、回路基板または回路基板材料である。回路基板は、例えば、回路パターンを有する導体層(回路層)を備える積層体である。回路基板材料は、回路基板に加工可能な積層体である。より具体的には、回路基板材料は、例えば、回路パターンを有しない導体層(非回路層)を備え、加工により回路パターンを形成可能な積層体である。回路基板材料としては、例えば、銅張積層板が挙げられる。
図1は、積層体の第1実施形態としての銅張積層板を示す概略断面図である。第1実施形態では、上記の低誘電性樹脂組成物が、接着付与剤として使用される。
図2は、積層体の第2実施形態としての回路基板を示す概略断面図である。第2実施形態では、第1実施形態と同様に、上記の低誘電性樹脂組成物が、接着付与剤として使用される。
図3は、積層体の第3実施形態としての銅張積層板を示す概略断面図である。第3実施形態では、上記の低誘電性樹脂組成物が、低誘電接着剤として、使用される。
低誘電接着剤は、好ましくは、上記の低誘電性樹脂組成物の希釈液である。
図4は、積層体の第4実施形態としての回路基板を示す概略断面図である。第4実施形態では、第3実施形態と同様に、上記の低誘電性樹脂組成物が、低誘電接着剤として使用される。
図5~図8は、積層体の第5実施形態としての回路基板を製造するための工程断面図である。第5実施形態では、上記した低誘電性樹脂組成物が、低誘電接着剤として使用される。
準備例1-1(スチレン系エラストマー)
表1~表4に示す通り、以下の市販品を、スチレン系エラストマーとして、準備した。
SEPTON 2063;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量13質量%、重量平均分子量(Mw)100000
SEPTON 2002;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量30質量%、重量平均分子量(Mw)55000
Kraton G1730;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量20質量%、重量平均分子量(Mw)93000
Kraton G1652;スチレン-エチレン-ブチレン-スチレン共重合体(SEBS)、スチレン単位量30質量%、重量平均分子量(Mw)75000
SEPTON 1020;スチレン-エチレン-プロピレン共重合体(SEP)、スチレン単位量36質量%、重量平均分子量(Mw)120000
SEPTON 4033;スチレン-エチレン-エチレン-プロピレン-スチレン共重合体(SEEPS)、スチレン単位量30質量%、重量平均分子量(Mw)88000
SEPTON 2104;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量65質量%、重量平均分子量(Mw)60000
(1)触媒調製工程
VO(OC2H5)Cl2をシクロヘキサンで希釈し、バナジウム触媒溶液を得た。触媒溶液のバナジウム濃度は、6.7ミリモル/Lであった。
撹拌式の重合器(内径500mm、反応容積100L)を使用して、エチレンと、テトラシクロ[4.4.0.12,5.17,10]-3-ドデセンとを、連続的に供給し、これらを共重合させた。なお、エチレンとテトラシクロ[4.4.0.12,5.17,10]-3-ドデセンとの比率を調整して、環状オレフィン系ポリマーのガラス転移温度(Tg)を、調整した。
重合器から共重合体の溶液を抜き出した。共重合体の溶液に、濃度25質量%のNaOH溶液を添加した。これにより、反応を停止させた。また、これにより、触媒残渣を共重合体の溶液から除去した(脱灰処理)。溶液において、共重合体の濃度は、7.7質量%であった。
二重管式加熱器(外管径2B、内管径3/4B、長さ21m、熱源20kg/cm2G水蒸気)に、共重合体の溶液(固形分濃度5質量%)を供給し、180℃に加熱した。供給速度は、150kg/Hであった。
準備例2-1と同じ方法で、環状オレフィン系ポリマー(B-2)を得た。ただし、エチレンと、テトラシクロ[4.4.0.12,5.17,10]-3-ドデセンとの組成比を変更して、環状オレフィン系ポリマーのガラス転移温度(Tg)を調整した。
準備例2-1と同じ方法で、環状オレフィン系ポリマー(B-3)を得た。ただし、エチレンと、テトラシクロ[4.4.0.12,5.17,10]-3-ドデセンとの組成比を変更して、環状オレフィン系ポリマーのガラス転移温度(Tg)を調整した。
窒素置換した2リットルのオートクレーブに、ヘキサン900mLと、1-ブテン90gとを、投入した。また、オートクレーブに、トリイソブチルアルミニウムを、1ミリモル添加した。オートクレーブの内部を、70℃に昇温した。
以下の市販品を、その他のオレフィン系ポリマー(C-2)として、準備した。
商品名Vistamaxx 6102;プロピレン・エチレン共重合体(PER)、スチレン単位量0質量%、重量平均分子量(Mw)320000、融点107℃、エクソンモービル・ジャパン合同会社製
以下の市販品を、その他のオレフィン系ポリマー(C-3)として、準備した。
商品名Vistamaxx 3020FL;プロピレン・エチレン共重合体(PER)、スチレン単位量0質量%、重量平均分子量(Mw)370000、融点64℃、エクソンモービル・ジャパン合同会社製
実施例1(低誘電性樹脂組成物(D-1))
樹脂成分として、SEPTON 2063(SEPS、Mw100,000、スチレン単位量13%)50質量部と、環状オレフィン系ポリマー(B-1)50質量部とを準備した。
表1~表4に示す処方に変更した以外は、実施例1と同じ方法で、樹脂組成物(D-2)~(D-21)を得た。また、実施例1と同じ方法で、樹脂組成物(D-2)~(D-21)の溶液(固形分濃度20質量%)を得た。なお、実施例12では、変性剤を添加しなかった。
(1)比誘電率の測定、および、誘電正接の測定
樹脂組成物の溶液を、離型フィルム(ポリエチレンテレフタレートフィルム、厚み100μm)に塗布し、100℃で1分間乾燥させた。これにより、樹脂組成物の乾燥塗膜(膜厚約60μm)を得た。
熱硬化性樹脂として、ポリフェニレンエーテル(以下、PPE)を準備した。PPEを、トルエンに溶解させ、PPEの溶液を得た。
4;塗膜の全体が均質である。また、ヘイズが25以上である。
3;塗膜が相分離している。相分離部分が塗膜全体に均一に分布している。
2;塗膜が相分離している。相分離部分が不均一である。不均一部分の最大長さが1cm未満である。
1;塗膜が相分離している。相分離部分が不均一である。不均一部分の最大長さが1cm以上である。
樹脂組成物の溶液に、熱開始剤としての2,5-ジメチル-2,5-ビス(t-ブチルパーオキシ)ヘキサン(商品名パーヘキシン25B、日本油脂製)を添加した。熱開始剤の固形分質量は、樹脂組成物の樹脂成分の固形分総量100質量部に対して3質量部であった。
昇温速度;2℃/分
動作条件;せん断モード
周波数;1Hz
△;200℃におけるせん断貯蔵弾性率(G’)が1000Pa以上1500Pa未満である。
×;200℃におけるせん断貯蔵弾性率(G’)が1000Pa未満である。
樹脂組成物の溶液(固形分濃度20質量%、トルエン溶液)を、目視で確認し、樹脂組成物のトルエンに対する溶解性を評価した。評価基準を下記する。
△;樹脂組成物と溶媒との混合物が、均一なゲル状である。
×;樹脂組成物と溶媒との混合物中に、析出物が確認される。また、混合物の全体が不均一である。
スチレン単位量;スチレンに由来する構造単位の含有割合(質量%)
SEPTON 2063;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量13質量%、重量平均分子量(Mw)100000、クラレ製
SEPTON 2002;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量30質量%、重量平均分子量(Mw)55000、クラレ製
Kraton G1730;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量20質量%、重量平均分子量(Mw)93000、クレイトンポリマージャパン社製
Kraton G1652;スチレン-エチレン-ブチレン-スチレン共重合体(SEBS)、スチレン単位量30質量%、重量平均分子量(Mw)75000、クレイトンポリマージャパン社製
SEPTON 1020;スチレン-エチレン-プロピレン共重合体(SEP)、スチレン単位量36質量%、重量平均分子量(Mw)120000、クラレ製
SEPTON 4033;スチレン-エチレン-エチレン-プロピレン-スチレン共重合体(SEEPS)、スチレン単位量30質量%、重量平均分子量(Mw)88000、クラレ製
SEPTON 2104;スチレン-エチレン-プロピレン-スチレン共重合体(SEPS)、スチレン単位量65質量%、重量平均分子量(Mw)60000、クラレ製
MAH;変性剤、カルボキシ基含有モノマー無水マレイン酸
Claims (14)
- ポリオレフィン系樹脂を含む低誘電性樹脂組成物であって、
前記ポリオレフィン系樹脂が、
スチレン系エラストマー(A)と、
主鎖に脂環を有する環状オレフィン系ポリマー(B)とを含有し、
前記スチレン系エラストマー(A)と前記環状オレフィン系ポリマー(B)との総量100質量部に対して、前記スチレン系エラストマー(A)の含有割合が、30質量部以上89質量部以下である、低誘電性樹脂組成物。 - 前記スチレン系エラストマー(A)の重量平均分子量が、7万以上11万以下である、
請求項1に記載の低誘電性樹脂組成物。 - 前記スチレン系エラストマー(A)は、スチレンに由来する構造単位を含有し、前記スチレン系エラストマー(A)の総量に対して、前記スチレンに由来する構造単位の含有割合が、10質量%以上40質量%以下である、請求項1に記載の低誘電性樹脂組成物。
- 前記スチレン系エラストマー(A)が、ブチレンに由来する構造単位を含有しない、請求項1に記載の低誘電性樹脂組成物。
- 前記環状オレフィン系ポリマー(B)のガラス転移温度が、100℃以上140℃以下である、請求項1に記載の低誘電性樹脂組成物。
- 前記ポリオレフィン系樹脂が、官能基含有モノマーにより変性されている、請求項1に記載の低誘電性樹脂組成物。
- 前記官能基含有モノマーが、カルボキシ基含有モノマーを含む、請求項6に記載の低誘電性樹脂組成物。
- 請求項1に記載の低誘電性樹脂組成物を含む、接着付与剤。
- 熱硬化性樹脂と、請求項8に記載の接着付与剤とを含有し、
前記熱硬化性樹脂が、エポキシ樹脂、ポリフェニレンエーテル樹脂、フッ素樹脂、ポリイミド樹脂、フェノール樹脂、メラミン樹脂、不飽和二重結合を有するポリオレフィン樹脂および液晶ポリマーからなる群から選択される少なくとも1種を含む、低誘電接着性組成物。 - 請求項9に記載の低誘電接着性組成物の硬化物を含む、低誘電接着性成形物。
- 請求項10に記載の低誘電接着性成形物を含む絶縁層と、
前記絶縁層の少なくとも一方面に配置された導体層と
を備える、積層体。 - 請求項1に記載の低誘電性樹脂組成物を含む、低誘電接着剤。
- 絶縁層と、
前記絶縁層に対向配置される導体層と、
前記絶縁層および前記導体層の間に配置され、前記絶縁層および前記導体層を接着する接着層と
を備え、
前記接着層が、請求項12に記載の低誘電接着剤を含む、積層体。 - 第1導体層と、
前記第1導体層に対向配置される第2導体層と、
前記第1導体層および前記第2導体層の間に配置され、前記第1導体層および前記第2導体層を接着する接着層と
を備え、
前記接着層が、請求項12に記載の低誘電接着剤を含む、積層体。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257001907A KR20250026286A (ko) | 2022-08-15 | 2023-08-07 | 저유전성 수지 조성물, 접착 부여제, 저유전 접착성 조성물, 저유전 접착성 성형물, 저유전 접착제 및 적층체 |
| EP23854828.3A EP4574899A1 (en) | 2022-08-15 | 2023-08-07 | Low dielectric resin composition, adhesiveness imparting agent, low dielectric adhesive composition, low dielectric adhesive molded article, low dielectric adhesive and multilayer body |
| CN202380054312.8A CN119562988A (zh) | 2022-08-15 | 2023-08-07 | 低介电性树脂组合物、粘接赋予剂、低介电粘接性组合物、低介电粘接性成型物、低介电粘接剂及层叠体 |
| JP2024541510A JPWO2024038794A1 (ja) | 2022-08-15 | 2023-08-07 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022129202 | 2022-08-15 | ||
| JP2022-129202 | 2022-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024038794A1 true WO2024038794A1 (ja) | 2024-02-22 |
Family
ID=89941549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2023/028788 Ceased WO2024038794A1 (ja) | 2022-08-15 | 2023-08-07 | 低誘電性樹脂組成物、接着付与剤、低誘電接着性組成物、低誘電接着性成形物、低誘電接着剤および積層体 |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4574899A1 (ja) |
| JP (1) | JPWO2024038794A1 (ja) |
| KR (1) | KR20250026286A (ja) |
| CN (1) | CN119562988A (ja) |
| TW (1) | TW202415717A (ja) |
| WO (1) | WO2024038794A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302722A (ja) * | 2006-05-09 | 2007-11-22 | Polyplastics Co | 高周波用電子部品用材料及び当該材料からなる高周波用電子部品 |
| JP2018039995A (ja) * | 2016-08-31 | 2018-03-15 | 新日鉄住金化学株式会社 | 可溶性多官能ビニル芳香族共重合体、その製造方法、硬化性樹脂組成物及びその硬化物 |
| JP2018154823A (ja) | 2017-03-15 | 2018-10-04 | 臻鼎科技股▲ふん▼有限公司 | 低誘電率樹脂組成物及びこれを応用したフィルム及び回路基板 |
| JP2022043966A (ja) | 2020-09-04 | 2022-03-16 | 三井化学株式会社 | 回路基板層間接着剤および積層体 |
-
2023
- 2023-08-07 CN CN202380054312.8A patent/CN119562988A/zh active Pending
- 2023-08-07 EP EP23854828.3A patent/EP4574899A1/en active Pending
- 2023-08-07 JP JP2024541510A patent/JPWO2024038794A1/ja active Pending
- 2023-08-07 WO PCT/JP2023/028788 patent/WO2024038794A1/ja not_active Ceased
- 2023-08-07 KR KR1020257001907A patent/KR20250026286A/ko active Pending
- 2023-08-11 TW TW112130219A patent/TW202415717A/zh unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007302722A (ja) * | 2006-05-09 | 2007-11-22 | Polyplastics Co | 高周波用電子部品用材料及び当該材料からなる高周波用電子部品 |
| JP2018039995A (ja) * | 2016-08-31 | 2018-03-15 | 新日鉄住金化学株式会社 | 可溶性多官能ビニル芳香族共重合体、その製造方法、硬化性樹脂組成物及びその硬化物 |
| JP2018154823A (ja) | 2017-03-15 | 2018-10-04 | 臻鼎科技股▲ふん▼有限公司 | 低誘電率樹脂組成物及びこれを応用したフィルム及び回路基板 |
| JP2022043966A (ja) | 2020-09-04 | 2022-03-16 | 三井化学株式会社 | 回路基板層間接着剤および積層体 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119562988A (zh) | 2025-03-04 |
| JPWO2024038794A1 (ja) | 2024-02-22 |
| EP4574899A1 (en) | 2025-06-25 |
| KR20250026286A (ko) | 2025-02-25 |
| TW202415717A (zh) | 2024-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7465894B2 (ja) | 硬化性組成物及びその硬化体 | |
| JP6645431B2 (ja) | 低誘電接着剤組成物 | |
| CN107109182A (zh) | 含有低介电粘合剂层的层叠体 | |
| WO2023008524A1 (ja) | 樹脂組成物、樹脂シート、積層体、シート硬化物及び回路基板材料 | |
| JP7120497B1 (ja) | 接着剤組成物、ならびにこれを含有する接着シート、積層体およびプリント配線板 | |
| WO2024038794A1 (ja) | 低誘電性樹脂組成物、接着付与剤、低誘電接着性組成物、低誘電接着性成形物、低誘電接着剤および積層体 | |
| CN115768626A (zh) | 粘接剂组合物、粘接片、层叠体及印刷线路板 | |
| TWI885248B (zh) | 黏接劑組成物、及含有此黏接劑之黏接片、疊層體及印刷配線板 | |
| JP2025151407A (ja) | 低誘電性樹脂組成物、接着付与剤、低誘電接着性成形物、低誘電接着剤、積層体、および、低誘電性樹脂組成物の製造方法 | |
| WO2021075367A1 (ja) | ポリオレフィン系接着剤組成物 | |
| JP7444318B1 (ja) | 接着剤組成物、並びにこれを含有する接着シート、積層体およびプリント配線板 | |
| JP7444319B1 (ja) | 接着剤組成物、並びにこれを含有する接着シート、積層体およびプリント配線板 | |
| JP2024146842A (ja) | 樹脂組成物、樹脂シート、積層体、シート硬化物及び回路基板材料 | |
| US20250354011A1 (en) | Flame retarded resin composition and articles made therefrom | |
| JP2025089737A (ja) | 変性水素化芳香族ビニル重合体 | |
| WO2025094502A1 (ja) | 接着剤組成物、並びにこれを含有する接着シート、積層体およびプリント配線板 | |
| WO2025018339A1 (ja) | 接着剤組成物、並びにこれを含有する接着シート、積層体およびプリント配線板 | |
| JP2024019126A (ja) | 樹脂組成物、樹脂シート、積層体、シート硬化物及び回路基板材料 | |
| CN116997627A (zh) | 粘接剂组合物及含有其的粘接片材、层叠体和印刷线路板 | |
| WO2021172189A1 (ja) | 変性水素化ブロックコポリマー |
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: 23854828 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024541510 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380054312.8 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 20257001907 Country of ref document: KR Kind code of ref document: A |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020257001907 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380054312.8 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023854828 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023854828 Country of ref document: EP Effective date: 20250317 |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023854828 Country of ref document: EP |