WO2017158917A1 - ポリアミドイミド樹脂を用いた接着剤組成物 - Google Patents
ポリアミドイミド樹脂を用いた接着剤組成物 Download PDFInfo
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- WO2017158917A1 WO2017158917A1 PCT/JP2016/083155 JP2016083155W WO2017158917A1 WO 2017158917 A1 WO2017158917 A1 WO 2017158917A1 JP 2016083155 W JP2016083155 W JP 2016083155W WO 2017158917 A1 WO2017158917 A1 WO 2017158917A1
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- adhesive composition
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- copper foil
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- 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
- C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
- C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09J179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/14—Polyamide-imides
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- 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
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- 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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/28—Metal sheet
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- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/386—Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- 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
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- 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
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
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- 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
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
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- 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
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- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal in the substrate
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- 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
- C09J2463/00—Presence of epoxy resin
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- 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
- C09J2479/00—Presence of polyamine or polyimide
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- 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
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/012—Flame-retardant; Preventing of inflammation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0358—Resin coated copper [RCC]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/022—Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Definitions
- Flexible printed wiring boards are electronic device parts that require flexibility and space saving, for example, device substrates for display devices such as liquid crystal displays and plasma displays, and board relay cables for mobile phones, digital cameras, portable game machines, etc. Widely used for operation switch boards, etc., and further expansion of applications is expected.
- double-sided flexible printed wiring boards and multilayer flexible printed wiring boards are double-sided copper-coated with copper foil as a circuit layer bonded to both sides of an insulating film (polyimide film) via an adhesive.
- insulating film polyimide film
- the adhesive used to bond the polyimide film and copper foil on the double-sided copper-clad laminate is bonded to the other substrate after coating and drying on the substrate, so there is no need to handle the adhesive film alone,
- the flexibility required for forming an adhesive film is not required at a high level. Further, it is not necessary to bury the step in the circuit layer, and generally the thickness of the adhesive after drying is 10 ⁇ m or less, so that low warpage is not required at a high level.
- the double-sided copper-clad laminate is the first base material that is made in the manufacturing process of flexible printed wiring boards, and must withstand repeated thermocompression bonding and reflow processes, with high levels of heat resistance and electrical insulation. Desired. Therefore, the adhesive used for the double-sided copper-clad laminate requires higher heat resistance and electrical insulation as compared to the interlayer adhesive, and allows flexibility and low warpage to some extent.
- an adhesive composition using a polyamide-imide resin copolymerized with a rubber component has been proposed as an adhesive suitable for an interlayer adhesive (see, for example, Patent Document 1).
- This adhesive composition has characteristics excellent in flexibility, low warpage, low-temperature processability, adhesion, and flame retardancy.
- thermoplastic polyimide resin used for this adhesive layer needs to be fused at a high temperature of 300 ° C. or higher in order to develop adhesiveness, and has a problem in low-temperature workability. If the copper foil is processed at a high temperature of 300 ° C. or higher, the quality is liable to be deteriorated such as poor appearance due to oxidation or misalignment due to deflection.
- the present invention comprises the following configurations (1) to (9).
- the epoxy resin is blended in an amount of 15 to 40 parts by mass with respect to 60 to 85 parts by mass of the polyamideimide resin;
- the glass transition temperature of the polyamideimide resin is 250 ° C.
- the polyamideimide resin has an acid value of 50 to 150 mgKOH / g;
- D The property of the epoxy resin is liquid at 25 ° C;
- E 15 to 60 parts by mass of a phosphorus-based flame retardant is blended with respect to a total of 100 parts by mass of the polyamide-imide resin and the epoxy resin; and
- F 50% by mass or more in the phosphorus-based flame retardant, It must be a phenanthrene-type phosphinic acid derivative.
- (3) The adhesive composition according to (1) or (2), which is used for bonding a copper foil and a polyimide film.
- the polyamideimide resin used in the adhesive composition of the present invention has the following characteristics (a) to (b).
- (A) The glass transition temperature of the polyamideimide resin is 250 ° C. or higher, preferably 255 ° C. or higher, more preferably 260 ° C. or higher; and
- (b) the acid value of the polyamideimide resin is 50 to 150 mgKOH / g, preferably 50 to 130 mgKOH / g, more preferably 60 to 120 mgKOH / g.
- an aliphatic or alicyclic acid anhydride or an aromatic, aliphatic or alicyclic dicarboxylic acid can be used as long as the effects of the present invention are not impaired.
- hydrogenated one of the components listed in the previous section meso-butane-1,2,3,4-tetracarboxylic dianhydride, pentane-1,2,4,5-tetracarboxylic dianhydride , Cyclobutanetetracarboxylic dianhydride, cyclopentanetetracarboxylic dianhydride, cyclohex-1-ene-2,3,5,6-tetracarboxylic dianhydride, 3-ethylcyclohex-1-ene- 3- (1,2), 5,6-tetracarboxylic dianhydride, 1-methyl-3-ethylcyclohexane-3- (1,2), 5,6-tetracarboxylic dianhydride, 1-methyl-3-Ethyl
- diamine having an aromatic ring examples include diamines corresponding to these diisocyanates. These may be used alone or in combination. Moreover, it is preferable that the diisocyanate which has an aromatic is 80 mol% or more in all the diisocyanates, it is preferable that it is 90 mol% or more, and it may be 100 mol%. Moreover, it is preferable that the diamine which has an aromatic is 80 mol% or more in all diamines, It is more preferable that it is 90 mol% or more, Even if it is 100 mol%, it does not interfere.
- alkali metals such as sodium fluoride, potassium fluoride, sodium methoxide, triethylenediamine, triethylamine, 1,8-diazabicyclo [5,4,0] -7-undecene, 1,
- An amine such as 5-diazabicyclo [4,3,0] -5-nonene or a catalyst such as dibutyltin dilaurate can be used. If these catalysts are too small, the catalytic effect cannot be obtained, and if they are too large, there is a possibility that side reactions occur. It is preferable to use 5 mol%, more preferably 0.1 to 3 mol%.
- the adhesive film has a structure in which a protective film is provided on at least one side of an adhesive layer made of an adhesive composition, and has a configuration of protective film / adhesive layer or protective film / adhesive / protective film.
- An insulating plastic film layer may be provided in the adhesive layer.
- the adhesive film can be used for multilayer printed circuit boards.
- the copper-clad laminate has a configuration in which a copper foil is bonded to at least one surface of an insulating film (polyimide film) with an adhesive made of an adhesive composition.
- the copper foil is not particularly limited, and a rolled copper foil and an electrolytic copper foil conventionally used for flexible printed wiring boards can be used.
- the adhesive composition of the present invention is extremely suitable for use in bonding a copper foil and a polyimide film in this copper-clad laminate.
- the adhesive layer of the copper-clad laminate is generally a thin film of 15 ⁇ m or less, and the warpage in the B stage state is not required as much as the coverlay film and the adhesive film.
- the adhesive composition of the present invention is somewhat inferior in flexibility and low warpage, it satisfies the low-temperature workability, adhesiveness, heat resistance, flame retardancy, and electrical insulation at a high level at the same time. It can be suitably used for bonding a copper foil and a polyimide film on a plate. Since the adhesive composition of the present invention is slightly inferior in flexibility and low warpage, it cannot be suitably used for coverlays and adhesive films.
- phosphinic acid derivatives are non-reactive phosphorus flame retardants having the following structure [I] in the structure.
- Preferable examples of the phosphinic acid derivative having the structure [I] in the structure include the following.
- other phosphorus compounds may be used alone or in combination, if necessary, at less than 50% by mass within a range not impairing flame retardancy, solder heat resistance, and bleed out.
- an organic solvent having a surface tension of 33 dyn / cm or less may be added in addition to the above-mentioned organic solvent in order to enhance the coating stability within a range that does not impair the effects of the present invention. it can.
- the amount of residual solvent in the adhesive layer in the B-stage state is preferably 5.0 to 16.0% by mass, more preferably 5.
- the content is 0 to 13.0% by mass, and more preferably 8.0 to 13.0% by mass. If the amount of residual solvent is small, the low temperature workability may be reduced. If the amount of residual solvent is large, the electrical insulation property may be reduced.
- glycidylamine can be added in addition to the above-described epoxy resin in order to accelerate curing within a range not impairing the effects of the present invention.
- the amount of glycidylamine added is preferably 0.01% by mass to 5% by mass and more preferably 0.05% by mass to 2% by mass with respect to the total weight of the polyamideimide and the epoxy resin in the adhesive composition. If the blending amount of glycidylamine is small, the effect of promoting curing may not be obtained.
- the curing agent is not particularly limited as long as it is a compound that reacts with an epoxy resin, and examples thereof include an amine-based curing agent, a compound having a phenolic hydroxyl group, a compound having a carboxylic acid, and a compound having an acid anhydride.
- the curing catalyst is not particularly limited as long as it promotes the reaction between the epoxy resin, the polyamideimide resin, and the curing agent. For example, 2MZ, 2E4MZ, C11Z, C17Z, 2PZ, manufactured by Shikoku Kasei Kogyo Co., Ltd.
- an organic / inorganic filler can be added for the purpose of improving solder heat resistance within a range not impairing the effects of the present invention.
- the organic filler include powders such as polyimide and polyamideimide which are heat resistant resins.
- the inorganic filler include silica (SiO 2 ), alumina (Al 2 O 3 ), titania (TiO 2 ), tantalum oxide (Ta 2 O 5 ), zirconia (ZrO 2 ), and silicon nitride (Si 3 N).
- silica is preferable from the viewpoint of ease of dispersion and heat resistance improvement effect.
- these may be used alone or in combination.
- the addition amount of these organic / inorganic fillers is preferably 1 to 30% by mass, and more preferably 3 to 15% by mass with respect to the nonvolatile component of the adhesive composition. If the blending amount is too large, the adhesive coating becomes brittle, and if the blending amount is too small, a sufficient effect of improving heat resistance may not be obtained.
- Acid value 0.1 g of solidified polyamideimide resin was dissolved in 20 ml of N-methyl-2-pyrrolidone, titrated with KOH using thymolphthalein as an indicator, and the carboxyl group equivalent per 10 6 g of resin was measured. The acid value.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
(1)ポリアミドイミド樹脂、エポキシ樹脂及びリン系難燃剤が配合され、かつ以下の(A)~(F)の特徴を有する接着剤組成物:
(A)ポリアミドイミド樹脂60~85質量部に対して、エポキシ樹脂が15~40質量部配合されていること;
(B)ポリアミドイミド樹脂のガラス転移温度が250℃以上であること;
(C)ポリアミドイミド樹脂の酸価が50~150mgKOH/gであること;
(D)エポキシ樹脂の性状が25℃において液状であること;
(E)ポリアミドイミド樹脂とエポキシ樹脂の合計100質量部に対して、リン系難燃剤が15~60質量部配合されていること;及び
(F)リン系難燃剤中の50質量%以上が、フェナントレン型のホスフィン酸誘導体であること。
(2)前記ポリアミドイミド樹脂が、酸成分としてトリメリット酸無水物を含有することを特徴とする(1)に記載の接着剤組成物。
(3)銅箔とポリイミドフィルムを貼り合せるために使用されることを特徴とする(1)または(2)に記載の接着剤組成物。
(4)(1)~(3)のいずれかに記載の接着剤組成物からなる接着剤層を使用したことを特徴とする接着剤層付き銅箔。
(5)Bステージ状態における前記接着剤層付き銅箔の接着剤層中の残留溶剤量が5.0~16.0質量%であることを特徴とする(4)に記載の接着剤層付き銅箔。
(6)150℃以下のラミネート温度で貼り合せ可能であることを特徴とする(4)または(5)に記載の接着剤層付き銅箔。
(7)ポリイミドフィルムの両面にそれぞれ銅箔を接着した両面銅張り積層板であって、(4)~(6)のいずれかに記載の接着剤層付き銅箔を使用したことを特徴とする両面銅張り積層板。
(8)(7)に記載の両面銅張り積層板を使用したことを特徴とするフレキシブルプリント配線板。
(a)ポリアミドイミド樹脂のガラス転移温度が250℃以上、好ましくは255℃以上、更に好ましくは260℃以上であること;及び
(b)ポリアミドイミド樹脂の酸価が50~150mgKOH/g、好ましくは50~130mgKOH/g、更に好ましくは60~120mgKOH/gであること。
また、芳香族を有するジイソシアネートは全ジイソシアネート中で80mol%以上であることが好ましく、90mol%以上であることが好ましく、100mol%であっても差し支えない。また、芳香族を有するジアミンは、全ジアミン中で80mol%以上であることが好ましく、90mol%以上であることがより好ましく、100mol%であっても差し支えない。
本発明の接着剤組成物は、柔軟性、低反りはやや劣るものの、低温加工性、接着性、耐熱性、難燃性、電気絶縁性を同時に高いレベルで満足するため、特に両面銅張り積層板において銅箔とポリイミドフィルムを貼り合わせるために好適に使用することができる。
本発明の接着剤組成物は、柔軟性、低反りはやや劣るため、カバーレイおよび接着フィルムに好適に使用することはできない。
構造内に構造[I]を有するホスフィン酸誘導体の好適な例としては、以下のものが挙げられる。
上記のホスフィン酸誘導体のほかに、難燃性、半田耐熱性、ブリードアウトを損なわない範囲で50質量%未満で必要に応じ、他のリン化合物を単独または複数を組み合わせて用いても構わない。
接着剤層中の残留溶剤量は、以下のように100℃を基準とした250℃での質量減少率(銅箔質量は含まない)より算出する。
接着剤層中の残留溶剤量(%)=(250℃での接着剤層付き銅箔の質量-銅箔質量)/(100℃での接着剤層付き銅箔の質量-銅箔質量)×100
固形化したポリアミドイミド樹脂を、ポリマー濃度が0.5g/dlとなるようにN-メチル-2-ピロリドンに溶解した。得られた溶液の溶液粘度及び溶媒粘度を30℃で、ウベローデ型粘度管により測定して、下記の式に従って対数粘度を計算した。
対数粘度(dl/g)=[ln(V1/V2)]/V3
上記式中、V1は、ウベローデ型粘度管により測定した溶液粘度を示し、V2は、ウベローデ型粘度管により測定した溶媒粘度を示す。V1及びV2は、ポリマー溶液及び溶媒(N-メチル-2-ピロリドン)が粘度管のキャピラリーを通過する時間から求めた。また、V3は、ポリマー濃度(g/dl)である。
固形化したポリアミドイミド樹脂0.1gを、20mlのN-メチル-2-ピロリドンに溶解し、チモールフタレインを指示薬にしてKOHで滴定し、樹脂106g当たりのカルボキシル基当量を測定して酸価とした。
ポリアミドイミド樹脂溶液を銅箔の光沢面に塗布し、140℃3分間熱風乾燥機で乾燥させた後、250℃30分間窒素雰囲気下で乾燥させることにより、樹脂付き銅箔を得た。その後、銅箔をエッチングすることにより、厚み20μmのポリアミドイミド樹脂フィルムを作成した。このようにして作成したポリアミドイミド樹脂フィルムのガラス転移点を、TMA(熱機械分析装置)針進入法により荷重5g、昇温速度10℃/分の条件で測定した。
接着剤組成物の溶液を銅箔(JX日鉱日石製BHY 厚み18μm)の非光沢面に乾燥後の厚みが5μmとなるように塗布し、110℃3分間熱風乾燥機で乾燥させ、Bステージ状態のサンプルを得た。このBステージサンプルの接着剤塗布面とポリイミドフイルム(東レデュポン製カプトン100EN)とを真空プレスラミネート機を用いて、130℃、3MPa、30秒間減圧下で熱圧着させた。熱圧着後のサンプルにおいて、浮きや剥がれ等の貼り合せ不良のないものを○、浮きもしくは剥がれ等の貼り合せ不良のあったものを×とした。
接着剤組成物の溶液を銅箔(JX日鉱日石製BHY 厚み18μm)の非光沢面に乾燥後の厚みが5μmとなるように塗布し、110℃3分間熱風乾燥機で乾燥させ、Bステージ状態のサンプルを得た。このBステージサンプルの接着剤塗布面とポリイミドフイルム(東レデュポン製カプトン100EN)とを真空プレスラミネート機を用いて、130℃、3MPa、30秒間減圧下で熱圧着させた。その後、200℃で3時間加熱硬化させた。硬化後のサンプルを、引っ張り試験機(島津製オートグラフAG-X plus)を用いて25℃の雰囲気下で銅箔を180°の方向に50mm/minの速度で引き剥がし、接着強度を測定した。接着強度が0.7N/mm以上のものを○、0.7N/mm未満のものを×とした。
接着性の評価と同様に加熱硬化させたサンプルを作製し、20mm角に切断し、300℃の半田浴にポリイミド面を上にしてフロートさせた。膨れや剥がれのないものを○、膨れもしくは剥がれのあったものを×とした。
接着剤組成物の溶液をポリイミドフイルム(カネカ製アピカル12.5NPI)に乾燥後の厚みが20μmとなるように塗布し、140℃3分間熱風乾燥機で乾燥させ、Bステージ状態のサンプルを得た。このBステージサンプルの接着剤塗布面とポリイミドフイルム(カネカ製アピカル12.5NPI)とを真空プレスラミネート機を用いて、130℃、3MPa、30秒間減圧下で熱圧着させた。その後、200℃で3時間加熱硬化させた。硬化後のサンプルをUL-94VTM規格に準拠して、難燃性を評価した。VTM-0相当のものを○、VTM-0を満足しないものを×とした。
接着剤組成物の溶液をポリイミドフイルム(カネカ製アピカル12.5NPI)に乾燥後の厚みが20μmとなるように塗布し、140℃3分間熱風乾燥機で乾燥させ、Bステージ状態のサンプルを得た。このBステージサンプルの接着剤塗布面とL/S=50/50μmのくし型パターンに真空プレスラミネート機を用いて、160℃、3MPa、30秒間減圧下で熱圧着させた。その後、200℃で3時間加熱硬化させた。温度121℃、湿度100%の環境下、100Vの電圧を250時間印加した。250時間後の抵抗値が1×109Ω以上でありデンドライトのないものを◎、250時間後の抵抗値が1×108Ω以上1×109Ω未満でありデンドライトのないものを○、250時間後の抵抗値が1×108Ω未満もしくはデンドライトが発生しているものを×とした。
表1に示す原料の樹脂組成(mol%)で、ポリアミドイミド樹脂の重合を行った。具体的には、以下のように重合を行った。
撹拌機、冷却管、窒素導入管および温度計を備えた4つ口のセパラブルフラスコに、無水トリメリット酸192.13g(1.00mol)、4,4′-ジフェニルメタンジイソシアネート217.73g(0.87mol)および脱炭酸後の樹脂分の濃度が40重量%となるようN-メチル-2-ピロリドン482.78gを加え、窒素下で100℃まで昇温して2時間反応させ、さらに150℃に昇温して5時間反応させた。その後、樹脂分の濃度が35重量%となるようN-メチル-2-ピロリドン114.95gを加えて希釈し、ポリアミドイミド樹脂1の溶液を得た。また、他のポリアミドイミド樹脂2~4においても表1に示す原料の樹脂組成で上記と同様の手順で樹脂の重合を行い、溶液を得た。
撹拌機、冷却管、窒素導入管および温度計を備えた4つ口のセパラブルフラスコに、無水トリメリット酸192.13g(1.00mol)、4,4′-ジフェニルメタンジイソシアネート237.75g(0.95mol)および脱炭酸後の樹脂分の濃度が35重量%となるようN-メチル-2-ピロリドン634.91gを加え、窒素下で100℃まで昇温して2時間反応させ、さらに150℃に昇温して5時間反応させた。その後、樹脂分の濃度が30重量%となるようN-メチル-2-ピロリドン162.89gを加えて希釈し、ポリアミドイミド樹脂5の溶液を得た。
撹拌機、冷却管、窒素導入管および温度計を備えた4つ口のセパラブルフラスコに、無水トリメリット酸192.13g(1.00mol)、o-トリジンジイソシアネート211.42g(0.80mol)、トリレンジイソシアネート34.83g(0.20mol)、および脱炭酸後の樹脂分の濃度が35重量%となるようN-メチル-2-ピロリドン650.72gを加え、窒素下で100℃まで昇温して2時間反応させ、さらに150℃に昇温して5時間反応させた。その後、樹脂分の濃度が20重量%となるようN-メチル-2-ピロリドン750.83gを加えて希釈し、ポリアミドイミド樹脂6の溶液を得た。
撹拌機、冷却管、窒素導入管および温度計を備えた4つ口のセパラブルフラスコに、無水トリメリット酸180.60g(0.94mol)、4,4′-ジフェニルメタンジイソシアネート225.23g(0.90mol)、両末端カルボキシル基変性アクリロニトリルブタジエンゴム(分子量3500)210.00g(0.06mol)および脱炭酸後の樹脂分の濃度が40重量%となるようN,N-ジメチルアセトアミド804.95gを加え、窒素下で100℃まで昇温して2時間反応させ、さらに150℃に昇温して5時間反応させた。その後、樹脂分の濃度が30重量%となるようN,N-ジメチルアセトアミド447.20gを加えて希釈し、ポリアミドイミド樹脂7の溶液を得た。また、他のポリアミドイミド樹脂8においても表1に示す原料の樹脂組成で上記と同様の手順で樹脂の重合を行い、溶液を得た。
表2に示す接着剤配合(固形分(質量%))に従って実施例1~11及び比較例1~9の接着剤組成物のN-メチル-2-ピロリドン溶液及びN,N-ジメチルアセトアミド溶液を作製し、上記の特性の評価を行った。
Claims (8)
- ポリアミドイミド樹脂、エポキシ樹脂及びリン系難燃剤が配合され、かつ以下の(A)~(F)の特徴を有する接着剤組成物:
(A)ポリアミドイミド樹脂60~85質量部に対して、エポキシ樹脂が15~40質量部配合されていること;
(B)ポリアミドイミド樹脂のガラス転移温度が250℃以上であること;
(C)ポリアミドイミド樹脂の酸価が50~150mgKOH/gであること;
(D)エポキシ樹脂の性状が25℃において液状であること;
(E)ポリアミドイミド樹脂とエポキシ樹脂の合計100質量部に対して、リン系難燃剤が15~60質量部配合されていること;及び
(F)リン系難燃剤中の50質量%以上が、フェナントレン型のホスフィン酸誘導体であること。 - 前記ポリアミドイミド樹脂が、酸成分としてトリメリット酸無水物を含有することを特徴とする請求項1に記載の接着剤組成物。
- 銅箔とポリイミドフィルムを貼り合せるために使用されることを特徴とする請求項1または2に記載の接着剤組成物。
- 請求項1~3のいずれかに記載の接着剤組成物からなる接着剤層を使用したことを特徴とする接着剤層付き銅箔。
- Bステージ状態における前記接着剤層付き銅箔の接着剤層中の残留溶剤量が5.0~16.0質量%であることを特徴とする請求項4に記載の接着剤層付き銅箔。
- 150℃以下のラミネート温度で貼り合せ可能であることを特徴とする請求項4または5に記載の接着剤層付き銅箔。
- ポリイミドフィルムの両面にそれぞれ銅箔を接着した両面銅張り積層板であって、請求項4~6のいずれかに記載の接着剤層付き銅箔を使用したことを特徴とする両面銅張り積層板。
- 請求項7に記載の両面銅張り積層板を使用したことを特徴とするフレキシブルプリント配線板。
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- 2016-11-09 US US15/780,739 patent/US10913249B2/en active Active
- 2016-11-09 CN CN201680072279.1A patent/CN108368412B/zh active Active
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CN112313302B (zh) * | 2018-06-21 | 2022-06-03 | 东洋纺株式会社 | 包含丙烯腈丁二烯橡胶共聚聚酰胺酰亚胺树脂的粘接剂组合物 |
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CN112313302A (zh) * | 2018-06-21 | 2021-02-02 | 东洋纺株式会社 | 包含丙烯腈丁二烯橡胶共聚聚酰胺酰亚胺树脂的粘接剂组合物 |
JP6592640B1 (ja) * | 2018-06-21 | 2019-10-16 | 東洋紡株式会社 | アクリロニトリルブタジエンゴム共重合ポリアミドイミド樹脂を含む接着剤組成物 |
WO2020071364A1 (ja) * | 2018-10-04 | 2020-04-09 | 東洋紡株式会社 | イミド結合を有する樹脂およびリン化合物を用いた接着剤組成物 |
WO2020071363A1 (ja) * | 2018-10-04 | 2020-04-09 | 東洋紡株式会社 | イミド結合を有する樹脂およびリン化合物を用いた接着剤組成物 |
JP6733845B1 (ja) * | 2018-10-04 | 2020-08-05 | 東洋紡株式会社 | イミド結合を有する樹脂およびリン化合物を用いた接着剤組成物 |
JP2020063353A (ja) * | 2018-10-17 | 2020-04-23 | 東洋紡株式会社 | 接着剤組成物、それを用いた接着剤シート、および積層体並びにそれらを用いたプリント基板 |
JP7138848B2 (ja) | 2018-10-17 | 2022-09-20 | 東洋紡株式会社 | 接着剤組成物、それを用いた接着剤シート、および積層体並びにそれらを用いたプリント基板 |
JP2021059656A (ja) * | 2019-10-04 | 2021-04-15 | 住友電気工業株式会社 | 接着剤組成物、フレキシブルプリント配線板用カバーレイ及びフレキシブルプリント配線板 |
JP7198190B2 (ja) | 2019-10-04 | 2022-12-28 | 住友電気工業株式会社 | 接着剤組成物、フレキシブルプリント配線板用カバーレイ及びフレキシブルプリント配線板 |
JP2021143216A (ja) * | 2020-03-10 | 2021-09-24 | 三菱ケミカル株式会社 | 粘接着剤組成物、粘接着剤、粘接着シート及び積層体 |
JP7447565B2 (ja) | 2020-03-10 | 2024-03-12 | 三菱ケミカル株式会社 | 粘接着剤組成物、粘接着剤、粘接着シート及び積層体 |
Also Published As
Publication number | Publication date |
---|---|
US10913249B2 (en) | 2021-02-09 |
KR102171631B1 (ko) | 2020-10-29 |
CN108368412A (zh) | 2018-08-03 |
US20180362815A1 (en) | 2018-12-20 |
KR20180087415A (ko) | 2018-08-01 |
TW201739889A (zh) | 2017-11-16 |
CN108368412B (zh) | 2020-12-22 |
TWI616506B (zh) | 2018-03-01 |
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