WO2010119908A1 - メタライジング用のポリイミドフィルム、これらの製造方法、及び金属積層ポリイミドフィルム - Google Patents
メタライジング用のポリイミドフィルム、これらの製造方法、及び金属積層ポリイミドフィルム Download PDFInfo
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- WO2010119908A1 WO2010119908A1 PCT/JP2010/056716 JP2010056716W WO2010119908A1 WO 2010119908 A1 WO2010119908 A1 WO 2010119908A1 JP 2010056716 W JP2010056716 W JP 2010056716W WO 2010119908 A1 WO2010119908 A1 WO 2010119908A1
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- polyimide
- film
- layer
- polyimide film
- metallizing
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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
- H05K1/0313—Organic insulating material
- H05K1/032—Organic insulating material consisting of one material
- H05K1/0346—Organic insulating material consisting of one material containing N
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
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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
- 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
- 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
- C08G73/1042—Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
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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
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
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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
- C08G73/1046—Polyimides containing oxygen in the form of ether bonds in the main chain
- C08G73/105—Polyimides containing oxygen in the form of ether bonds in the main chain with oxygen only in the diamino moiety
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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
- C08G73/1067—Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
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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
- C08G73/1067—Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
- C08G73/1071—Wholly aromatic polyimides containing oxygen in the form of ether bonds in the main chain
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
- B29K2079/08—PI, i.e. polyimides or derivatives thereof
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
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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
- B32B2255/00—Coating on the layer surface
- B32B2255/20—Inorganic coating
- B32B2255/205—Metallic coating
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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
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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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
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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
- B32B2307/514—Oriented
- B32B2307/516—Oriented mono-axially
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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
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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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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- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/388—Improvement of the adhesion between the insulating substrate and the metal by the use of a metallic or inorganic thin film adhesion layer
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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
- H05K3/389—Improvement of the adhesion between the insulating substrate and the metal by the use of a coupling agent, e.g. silane
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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
- the present invention is a metallizing polyimide film that can be provided with a metal layer by a metallizing method used as a material for electronic parts such as a printed wiring board, a flexible printed circuit board, a TAB tape, and a COF tape.
- a metallizing method used as a material for electronic parts such as a printed wiring board, a flexible printed circuit board, a TAB tape, and a COF tape.
- This metallizing polyimide film can be provided with a metal layer having excellent adhesion in all directions by a metalizing method, and a metal plating layer is further provided by a metal plating method on the obtained metal laminated polyimide film.
- a metal plating laminated polyimide film can be obtained.
- Polyimide film is used as an insulating member and cover member for wiring of electric / electronic parts.
- Patent Document 1 discloses a metallizing polyimide film in which a polyimide layer (a) is provided on one or both sides of a polyimide layer (b), and the polyimide layer (a) contains a surface treatment agent. A polyimide film is disclosed.
- Patent Document 2 is an aromatic polyimide film obtained from a polymer solution produced by polymerizing biphenyltetracarboxylic acids and phenylenediamines, and the polyimide film has a temperature of about 50 ° C to 300 ° C.
- the average linear expansion coefficient in the temperature range is about 0.1 ⁇ 10 ⁇ 5 to 2.5 ⁇ 10 ⁇ 5 cm / cm ⁇ ° C., and the longitudinal direction (MD direction) and the transverse direction (TD direction) of the film )
- the linear expansion coefficient ratio (MD / TD) is about 1/5 to 4, and before and after heating at room temperature to 400 ° C. and maintaining at 400 ° C. for 2 hours
- a dimensionally stable polyimide film having a thermal dimensional stability indicated by a rate of change in the dimension of the film at room temperature of about 0.3% or less is disclosed.
- Patent Document 3 is characterized in that the thermal expansion coefficient ⁇ MD in the machine transport direction (MD) of the film is in the range of 10 to 20 ppm / ° C and the thermal expansion coefficient ⁇ TD in the width direction (TD) is in the range of 3 to 10 ppm / ° C.
- a polyimide film is disclosed.
- Patent Document 4 as a continuous production method of a polyimide film in which the linear expansion coefficient in the width direction is controlled to be smaller than the linear expansion coefficient in the length direction, a solvent solution of a polyimide precursor is cast on a support, The solvent is removed from the support as a self-supporting film, the self-supporting film is stretched in the width direction at an initial heating temperature of 80 to 300 ° C, and then heated at a final heating temperature of 350 to 580 ° C. A method for producing a polyimide film is described.
- the linear expansion coefficient of polyimide film is the linear expansion coefficient of substrate members such as glass substrates and epoxy substrates connected to the wiring substrate, and the linear expansion coefficient of chip members such as IC chips mounted on the wiring substrate. It is desirable to approximate the coefficient, and further, the linear expansion coefficient in the wiring direction of the wiring board is desirably approximated to the linear expansion coefficient of the metal layer.
- the metalizing polyimide film is usually metallized by metalizing, metal laminated by plating, wiring processing of metal layers, etc. by roll-to-roll, and the TD direction of the film is mainly used for other substrates and chip members. Used to connect to. Therefore, it is desirable that the MD direction approximates the linear expansion coefficient of the metal, and the TD direction approximates the linear expansion coefficient of another substrate or chip member.
- a polyimide film having different linear expansion coefficients in the MD direction and the TD direction is generally attempted to be produced by stretching in the length direction or the width direction.
- An object of the present invention is to provide a polyimide film having an anisotropic linear expansion coefficient capable of providing a metal layer having excellent adhesion in all directions by a metalizing method.
- the first of the present invention is a polyimide film for metallization having an anisotropic linear expansion coefficient and having the polyimide layer (a) laminated on one or both sides of the polyimide layer (b),
- the polyimide layer (b) is a polyimide obtained from an acid component containing 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and a diamine component containing p-phenylenediamine
- the polyimide layer (a) is a polyimide obtained from a monomer component containing at least one diamine selected from phenylenediamine and diaminodiphenyl ether, and further relates to a metalizing polyimide film characterized by containing a surface treatment agent.
- the first metallizing polyimide film of the present invention is (I) On the self-supporting film of the polyimide precursor solution (b) from which the polyimide layer (b) can be obtained, the polyimide precursor solution that can obtain the polyimide layer (a) and contains a surface treatment agent A film obtained by applying (a) and then stretching or contracting the film in at least one direction so as to have an anisotropic linear expansion coefficient, followed by heating; Or (Ii) A polyimide precursor solution (b) from which a polyimide layer (b) can be obtained and a polyimide precursor solution (a) from which a polyimide layer (a) can be obtained and containing a surface treatment agent are used together.
- the self-supporting film obtained by extrusion is obtained by stretching or shrinking in at least one direction so as to have an anisotropic linear expansion coefficient and heating.
- 2nd of this invention is a manufacturing method of the polyimide film for elongate metalizing which has the anisotropic linear expansion coefficient which laminated
- the polyimide layer (b) uses a polyimide obtained from an acid component containing 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and a diamine component containing p-phenylenediamine,
- the polyimide layer (a) uses a polyimide obtained from a monomer component containing at least one diamine selected from phenylenediamine and diaminodiphenyl ether,
- a polyimide precursor solution (b) capable of obtaining a polyimide layer (b) is cast and dried on a support to produce a self-supporting film, On the self-supporting film from which this polyimide layer (b) can be obtained, the polyimide layer (a) can
- the present invention uses the polyimide film for metallizing obtained by the manufacturing method of the polyimide film for 1st metallizing of the said this invention of the said 1st, or the said 2nd metallizing of the said invention,
- the present invention relates to a metal-laminated polyimide film characterized by laminating a metal layer on the surface of a polyimide layer (a) of a polyimide film by a metalizing method.
- a fourth aspect of the present invention is a metal-plated laminated polyimide, wherein the third metal-laminated polyimide film of the present invention is used, and a metal plating layer is provided on the metal layer of the metal-laminated polyimide film by a metal plating method. Related to film.
- the polyimide layer (a) is a polyimide obtained from a monomer component containing at least one diamine selected from phenylenediamine and diaminodiphenyl ether in an amount of 30 to 100 mol% in 100 mol% of the diamine component.
- the diamine selected from phenylenediamine and diaminodiphenyl ether is at least one diamine selected from p-phenylenediamine and 4,4'-diaminodiphenyl ether.
- the linear expansion coefficient in the MD direction (L MD ) and the linear expansion coefficient in the TD direction (L TD ) have a relationship of
- the thickness of the polyimide layer (a) is 0.05-2 ⁇ m.
- the surface treatment agent is an aminosilane type, epoxysilane type or titanate type surface treatment agent.
- the polyimide film for metallizing according to the present invention is a polyimide film having an anisotropic linear expansion coefficient capable of providing a metal layer having excellent adhesion in all directions by a metalizing method.
- a polyimide film having an anisotropic linear expansion coefficient capable of providing a metal layer having excellent adhesion in all directions by a metalizing method can be obtained and manufactured.
- the polyimide film for metallizing of the present invention is a polyimide having an anisotropic linear expansion coefficient obtained by laminating a polyimide layer (a) containing a surface treating agent on one or both sides of a polyimide layer (b) as a substrate.
- a metal layer is provided on the surface of the polyimide layer (a) of this polyimide film by a metalizing method, the anisotropy of the adhesion force between the polyimide and the metal layer is reduced, and adhesion in all directions is achieved. An excellent metal laminated polyimide film is obtained.
- the polyimide layer (a) containing the surface treatment agent may contain the surface treatment agent in the entire polyimide layer (a), and the surface is not in contact with the polyimide layer (b) of the polyimide layer (a).
- a treatment agent may be included.
- the polyimide film for metallizing according to the present invention has a polyimide layer (a) containing a surface treating agent on one or both sides of the polyimide layer (b) as described above.
- This polyimide layer (a) is heat-treated at a maximum heating temperature of 350 ° C. to 600 ° C. in a state containing a surface treatment agent.
- a polyimide precursor solution (a) containing a surface treatment agent is applied or
- the polyimide precursor solution layer (a) formed by coextrusion is preferably obtained by heat treatment at a maximum heating temperature of 350 ° C. to 600 ° C.
- it is preferable that the polyimide layer (b) and the polyimide layer (a) are laminated
- the polyimide film for metallizing of the present invention has different linear expansion coefficients in the plane direction of the film, for example, stretched in at least one direction so as to have different linear expansion coefficients in the plane direction of the film, and contracted in at least one direction. Or it can obtain by extending
- the direction in which the film is stretched or shrunk may be any plane direction, but the TD direction or the MD direction is preferable in terms of operability and productivity.
- MD direction of the linear expansion coefficient of the metallization for the polyimide film of the present invention (L MD) and TD direction of the linear expansion coefficient (L TD) is preferably
- the linear expansion coefficient in the MD direction (L MD ) and the linear expansion coefficient in the TD direction (L TD ) of the metalizing polyimide film of the present invention are , Preferably (L MD -L TD )> 5 ppm, more preferably (L MD -L TD )> 6 ppm, more preferably (L MD -L TD )> 7 ppm, particularly preferably (L MD -L TD )> 8 ppm.
- the MD direction is the casting direction (casting direction, winding direction, or length direction), and the TD direction is the width direction.
- the metallizing polyimide film of the present invention only needs to have strength and elasticity that can be used for a wiring board and the like.
- the polyimide film for metalizing of the present invention has a linear expansion coefficient (50 to 200 ° C.) in at least one direction, preferably a linear expansion coefficient in the MD direction or TD direction, more preferably 1 ⁇ 10 in the MD direction. ⁇ 6 to 30 ⁇ 10 ⁇ 6 cm / cm / ° C., further 5 ⁇ 10 ⁇ 6 to 25 ⁇ 10 ⁇ 6 cm / cm / ° C., especially 10 ⁇ 10 ⁇ 6 to 20 ⁇ 10 ⁇ 6 cm / cm / ° C. Preferably there is.
- the polyimide precursor solution (b) from which the polyimide layer (b) is obtained is cast on a support and dried to obtain a self-supporting film, and the polyimide layer (a) is obtained on the resulting self-supporting film.
- the first step of applying the surface treatment agent-containing polyimide solution (a) or the surface treatment agent-containing polyimide precursor solution (a) and the coating film are stretched in at least one direction, and the maximum heating temperature is 350 ° C.-
- a method comprising a second step of heat treatment at 600 ° C .; 2) A polyimide solution (b) or polyimide precursor solution (b) from which a polyimide layer (b) is obtained, and a polyimide solution (a) containing a surface treatment agent or a polyimide containing a surface treatment agent from which a polyimide layer (a) is obtained
- a method comprising a second step of heat treatment at a temperature of 350 ° C.
- the polyimide precursor solution (b) from which the polyimide layer (b) is obtained is cast on a support and dried to obtain a self-supporting film.
- the resulting self-supporting film does not contain a surface treatment agent.
- A) or after applying a polyimide precursor solution (a) that does not contain a surface treatment agent and drying as necessary (even if part of the polyimide precursor in the polyimide precursor solution (a) is imidized The first step of coating the surface treatment agent-containing solution on the polyimide precursor solution (a) side, and drying as necessary, and stretching the coated film in at least one direction, and the maximum heating temperature
- a method comprising a second step of heat treatment at 350 ° C.
- a method comprising a first step and a second step of stretching the coated film in at least one direction and heat-treating at a maximum heating temperature of 350 ° C. to 600 ° C .; And so on.
- a multilayer self-supporting film obtained by laminating a polyimide precursor layer (a) containing a surface treatment agent on one side or both sides of a self-supporting film of a polyimide precursor solution (b) is heated. Drying and imidization are carried out.
- the maximum heating temperature is 350 ° C. to 600 ° C., preferably 450 to 590 ° C., more preferably 490 to 580 ° C., further preferably 500 to 580 ° C., particularly preferably 520 to 580. It is preferable to perform the heat treatment at ° C.
- the peel strength of the laminate in which the metal layer is laminated on the surface of the polyimide layer (a) by the metalizing method is large at a practical level or more, and sufficient mechanical properties (tensile modulus) and thermal properties as a whole film.
- a polyimide film with improved adhesiveness having properties (linear expansion coefficient) can be obtained.
- the surface treatment agent-containing polyimide solution (a) or the surface treatment agent-containing polyimide precursor solution (a) may be applied.
- the side in contact with the support during casting may be wound on either the outer side or the inner side, but the side in contact with the support during casting is simplified because the process is simple. It is preferable to wind outward.
- the temperature at which the imidation of the polyimide precursor does not proceed completely while moving the support is preferably 50 to 210 ° C., more preferably 60 to 200 ° C., and the organic solvent Heat to a temperature at which part or most can be removed, gradually remove the solvent, perform pre-drying until it becomes self-supporting, peel the resulting self-supporting film from the support, A process of applying or spraying a polyimide precursor containing a surface treatment agent or a polyimide solution to one or both sides of a self-supporting film, and further removing the coating solvent mainly by means of drying or extraction as necessary.
- a first step having The self-supporting film is stretched in the MD direction or TD direction at a heating temperature of 80 to 300 ° C., preferably 90 to 240 ° C., if necessary, heated at an intermediate heating temperature, and further heated at the final heating temperature to be imidized.
- Second step Furthermore, a polyimide film can be continuously manufactured as a third step of winding a long polyimide to obtain a roll-shaped polyimide film.
- the solvent content of the self-supporting film used for stretching obtained in the first step is preferably 25 to 45% by mass, more preferably 27 to 43% by mass, still more preferably 30 to 41% by mass, and particularly preferably 31.
- the imidization ratio of the self-supporting film is preferably 5 to 40%, more preferably 5.5 to 35%, still more preferably 6.0 to 30%, still more preferably 10 to A range of 28%, particularly preferably 15 to 27% is preferable because an excellent effect can be obtained.
- the solvent content (loss on heating) of the above self-supporting film was obtained by drying the film to be measured at 400 ° C. for 30 minutes, and calculating from the following formula from the weight W1 before drying and the weight W2 after drying. Value.
- the imidation rate of said self-supporting film can be measured by IR (ATR), and an imidation rate can be calculated using the ratio of the vibration band peak area of a film and a full cure product.
- ATR IR
- the vibration band peak a symmetric stretching vibration band of an imidecarbonyl group, a benzene ring skeleton stretching vibration band, or the like is used.
- imidation rate measurement there is also a method using a Karl Fischer moisture meter described in JP-A-9-316199.
- the drying may be performed inside the casting furnace at a temperature at which the imidation of the polyimide precursor does not proceed completely and a temperature at which a part or most of the organic solvent can be removed, and further from the support. This may be done until the film can be peeled off.
- the stretching in the width direction can be started at the initial heating temperature of 80 to 240 ° C. in the second step, and the heating temperature, heating time and stretching conditions are preferably set so that the stretching in the width direction is completed at the initial heating temperature of 80 to 300 ° C. It is preferable to select appropriately, for example, it may be heated and stretched at an initial heating temperature of 80 to 300 ° C. for about 2 to 60 minutes.
- a known material can be used as the support for casting the polyimide solution or the polyimide precursor solution, but the surface is made of a metal material such as stainless steel or a resin material such as polyethylene terephthalate.
- a metal material such as stainless steel or a resin material such as polyethylene terephthalate.
- Preferred are stainless steel belts, stainless steel rolls, polyethylene terephthalate belts, and the like.
- a thin film of the solution can be formed uniformly on the surface of the support.
- the surface of the support may be smooth, or grooves or embosses may be formed on the surface, but it is particularly preferable that the support is smooth.
- the solvent content of the self-supporting film peeled from the support or the self-supporting film used for stretching in the width direction at the initial heating temperature in the second step is preferably 25 to 45% by mass, more preferably 27 to A range of 43% by mass, more preferably 30-41% by mass, and particularly preferably 31-40% by mass is preferable because an excellent effect can be obtained.
- the polyimide precursor solution (a) containing the surface treatment agent when applied to the self-supporting film, it may be applied on the self-supporting film peeled off from the support. You may apply to the self-supporting film on the support body before peeling from a body.
- the self-supporting film is a surface (one side or both sides) on which the polyimide precursor solution (a) that gives the polyimide (a) containing the surface treatment agent can be applied almost uniformly or evenly on the surface of the self-supporting film. It is preferable to have.
- the polyimide precursor solution (a) containing the surface treatment agent is preferable to uniformly coat the polyimide precursor solution (a) containing the surface treatment agent on one side or both sides of the self-supporting film.
- a known method may be used as a method of applying the polyimide precursor solution (a) or the polyimide solution (a) that gives the polyimide (a) containing the surface treatment agent to one side or both sides of the self-supporting film.
- known coating methods such as gravure coating, spin coating, silk screen, dip coating, spray coating, bar coating, knife coating, roll coating, blade coating, and die coating can be used. Can be mentioned.
- a pin type tenter In the second step, during all or part of the heat treatment such as during the initial heating temperature of the self-supporting film, during the final heating temperature, during the initial heating temperature, and during the final heating temperature, a pin type tenter, a clip type It is preferable to use a tenter, a chuck type tenter, or the like and fix both ends of the self-supporting film in the width direction to perform heat treatment, or heat treatment and stretching.
- the second step in all the heat treatments from the initial heating temperature to the final heating temperature of the self-supporting film, it is preferable to perform the heat treatment by fixing both ends in the width direction of the self-supporting film.
- the polyimide film for metallization of the present invention may be stretched by a known method so that the desired linear expansion coefficient and desired properties can be obtained, and the draw ratio is, for example, 0.7 to 1. It can be selected from the range of 9 times, preferably 0.8 to 1.7 times, more preferably 0.9 to 1.5 times, and still more preferably 1.01 to 1.12 times.
- the draw ratio of stretching of the self-supporting film for coating or the self-supporting film for coextrusion is preferably in the range of 1.01 to 1.12 times, more preferably in the range of 1.04 to 1.11 times. More preferred is a range of 1.05 to 1.10 times, still more preferred is a range of 1.06 to 1.10 times, and particularly preferred is a range of 1.07 to 1.09 times.
- An example of stretching can be performed by gripping both ends of the film with a tenter or the like to reduce or expand one end or both ends, or in a continuous manufacturing method by regulating the speed of the roll or regulating the tension between the rolls.
- the heating in the casting furnace in the first step the heating at the initial heating temperature in the second step, the heating at the intermediate heating temperature and the heating at the final heating temperature, the heating can be performed in a plurality of blocks (zones) having different temperatures. It is possible to use a heating apparatus such as a casting furnace or a heating furnace having a plurality of heating blocks with different temperatures.
- the heating from the initial heating temperature to the final heating temperature in the second step is preferably performed using a heating device such as one heating furnace having a plurality of blocks (zones) having different temperatures.
- the stretching speed of the self-supporting film in the MD direction or the TD direction may be appropriately selected under conditions for obtaining desired characteristics such as a linear expansion coefficient, and preferably 1% / min to 20%. Stretching is preferably performed under the conditions of 2% / minute, more preferably 2% / minute to 10% / minute.
- a stretching pattern of the self-supporting film As a stretching pattern of the self-supporting film, a method of stretching the self-supporting film from a stretching ratio of 1 to a predetermined stretching ratio at once, a method of stretching sequentially, a method of stretching at an indefinite rate, little by little, Examples thereof include a method of stretching at a constant ratio, or a method of combining a plurality of these, and a method of stretching at a constant ratio is particularly preferred little by little.
- the heating time for stretching the self-supporting film in the second step may be appropriately selected depending on the apparatus used, and is preferably 1 minute to 60 minutes.
- Stretching of the self-supporting film in the second step can be easily performed without hindrance by starting in the above temperature range (80 to 240 ° C.). This is preferable because troubles such as breakage of the gripping part due to film curing due to volatilization can be avoided.
- heating at an intermediate heating temperature can be performed between the heating temperature at which stretching is started and the final heating temperature.
- the final heating exceeds the temperature of the initial heating temperature. It can be heated at a temperature lower than 1 to 60 minutes, and the final heating temperature is 350 to 600 ° C., preferably 450 to 590 ° C., more preferably 490 to 580 ° C., more preferably 500 to 580 ° C., It is particularly desirable to heat at 520 to 580 ° C. for 1 to 30 minutes.
- the above heat treatment can be performed using various known heating devices such as a hot air furnace and an infrared heating furnace.
- the heat treatment such as the initial heating temperature, intermediate heating temperature and / or final heating temperature of the film is preferably performed in an inert gas atmosphere such as nitrogen or argon, or a heated gas atmosphere such as air.
- a polyimide solution (b) may be used instead of the polyimide precursor solution (b), and a polyimide solution (a) may be used instead of the polyimide precursor solution (a).
- the polyimide film for metallizing according to the present invention is heat-treated at 350 to 600 ° C., preferably 450 to 590 ° C., more preferably 490 to 580 ° C., further preferably 500 to 580 ° C., particularly preferably 520 to 580 ° C.
- the polyimide film obtained in this manner is preferable for use as a material for electronic components such as a printed wiring board, a flexible printed board, and a TAB tape.
- the polyimide layer (a) of the metallizing polyimide film of the present invention contains a surface treatment agent.
- a metal layer having excellent adhesion can be provided directly on the surface of the polyimide film by a metalizing method.
- the polyimide layer (a) contains a surface treatment agent may be a case where the surface treatment agent is contained as it is, and further in a polyimide or a polyimide precursor or an organic solvent solution thereof, for example, 350 ° C. to 600 ° C.
- a heat change caused by heating preferably 450 to 590 ° C., more preferably 490 to 580 ° C., further preferably 500 to 580 ° C., particularly preferably 520 to 580 ° C., a change such as a chemical change such as oxidation occurs. It may be included in the state.
- the thickness of the metalizing polyimide film of the present invention is not particularly limited as long as it is appropriately selected depending on the purpose, but the thickness can be about 5 to 105 ⁇ m.
- the thickness of the polyimide layer (b) as the substrate and the polyimide layer (a) as the surface layer may be appropriately selected according to the purpose of use.
- the thickness of the polyimide layer (b) is preferably in the range of 5 to 100 ⁇ m, more preferably 8 to 80 ⁇ m, more preferably 10 to 80 ⁇ m, and particularly preferably 20 to 40 ⁇ m.
- the thickness of one side of the polyimide layer (a) may be any thickness that has no or little anisotropy in film surface adhesion, preferably 0.05 to 2 ⁇ m, more preferably 0.06 to 1.5 ⁇ m, More preferably, it is in the range of 0.07 to 1 ⁇ m, particularly preferably in the range of 0.1 to 0.8 ⁇ m.
- the thickness of the polyimide layer (a) is preferably 0.05 to 1 ⁇ m, more preferably 0.06 to 0.8 ⁇ m, still more preferably 0.07 to 0.5 ⁇ m, and particularly preferably 0.08 to 0.2 ⁇ m.
- the polyimide (b) of the polyimide layer (b) is a polyimide obtained from an acid component containing 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and a diamine component containing p-phenylenediamine, preferably Is an acid component containing 50 to 100 mol%, further 70 to 100 mol%, particularly 85 to 100 mol% of 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride in 100 mol% of an acid component, and a diamine
- a polyimide obtained from a diamine component containing 50 to 100 mol%, further 70 to 100 mol%, particularly 85 to 100 mol% of p-phenylenediamine in 100 mol% of the component such as printed wiring boards, flexible printed boards, TAB Used as a base material for tapes, COF tapes and the like.
- Polyimide (b) is a range that does not impair the characteristics of the present invention, 2,3,3 ′, 4′-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride, 3,3 ′, 4,4′-benzophenone tetracarboxylic dianhydride, 3,3 ′, 4 An acid component containing at least one component selected from 4′-diphenyl ether tetracarboxylic dianhydride and 1,4-hydroquinone dibenzoate-3,3 ′, 4,4′-tetracarboxylic dianhydride; benzene nuclei such as m-phenylenediamine, 4,4′-diaminodiphenyl ether, 3,4′-diaminodiphenyl ether, 3,3′-diaminodiphenyl ether, o-tolidine, m-tolidine and 4,4′-diaminobenzanilide A di
- Preferred combinations of the acid component and the diamine component constituting the polyimide (b) include 2,3,3 ′ in addition to 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and p-phenylenediamine.
- 4'-biphenyltetracarboxylic dianhydride 4'-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride, polyimide containing a component selected from 4,4'-diaminodiphenyl ether and 3,4'-diaminodiphenyl ether, printed wiring board, flexible printed circuit board
- the polyimide (a) of the polyimide layer (a) is a polyimide obtained from an acid component and a diamine component containing at least one diamine selected from phenylenediamine and diaminodiphenyl ether, preferably an acid component and a diamine component of 100 mol%.
- a polyimide obtained from a diamine component containing 30 to 100 mol%, further 50 to 100 mol%, further 70 to 100 mol%, particularly 85 to 100 mol% of at least one diamine selected from phenylenediamine and diaminodiphenyl ether. is there.
- Use of such a polyimide is preferable because the resulting polyimide film for metallizing is excellent in heat resistance and has excellent mechanical properties.
- the polyimide (a) a polyimide which is not “heat-resistant and non-crystalline polyimide” described in the claims of JP-A-2005-272520 can be used, and JP-A-2003-251773.
- Polyimides other than “thermoplastic polyimide” described in the claims of the publication can be used, and “heat resistant and non-crystalline polyimide” described in the claims of JP-A-2005-272520 and Polyimides other than “thermoplastic polyimide” described in the claims of Kaikai 2003-251773 can be used.
- examples of the phenylenediamine include p-phenylenediamine and m-phenylenediamine.
- examples of the diaminodiphenyl ether include 4,4′-diaminodiphenyl ether, 3,4′-diaminodiphenyl ether, Mention may be made of 3,3′-diaminodiphenyl ether.
- polyimide (a) it is preferable to use p-phenylenediamine, 4,4'-diaminodiphenyl ether and 3,4'-diaminodiphenyl ether as the diamine component of polyimide (a).
- Examples of the acid component of the polyimide (a) include 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride, pyromellitic dianhydride, and 1,4-hydroquinone dibenzoate-3,3 ′, 4. It is preferable to use at least one component selected from 4′-tetracarboxylic dianhydride.
- Polyimide (a) is within a range that does not impair the characteristics of the present invention.
- An acid component containing at least one component selected from products 2)
- benzene nuclei such as o-tolidine, m-tolidine and 4,4′-diaminobenzanilide have 1 to 2 diamines (such as ethylene chain between two benzene nuclei).
- polyimide (a) is preferably a polyimide obtained from a diamine component containing at least one component selected from (not containing C2 or higher alkyl chain).
- a polyimide film having a small embedding property can be obtained.
- the acid component and the diamine component constituting the polyimide (a) At least one acid component selected from 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride, p-phenylenediamine, 4,4′-diaminodiphenyl ether, and 3, A combination with at least one diamine component selected from 4'-diaminodiphenyl ether can be mentioned.
- the polyimide (b) and the polyimide (a) may be a combination of the same acid component and a diamine component, or may be a different combination.
- Polyimide (b) and polyimide (a) preferably have a glass transition temperature of 250 ° C. or higher, more preferably 270 ° C. or higher, more preferably 300 ° C. or higher, more preferably 320 ° C. or higher, and particularly preferably 330 ° C. or higher. Or a glass transition temperature that is preferably not less than 250 ° C., more preferably less than 270 ° C., more preferably less than 300 ° C., more preferably less than 320 ° C., particularly preferably less than 330 ° C.
- polyimide because it is possible to obtain a polyimide film that is less likely to cause a problem that metal wiring is embedded in a polyimide layer even when chip-mounted at a high temperature such as gold-gold connection or gold-tin connection. .
- a polyimide film can be produced by a method in which chemical imidization or thermal imidization and chemical imidization are used in addition to thermal imidization.
- the synthesis of the polyimide precursor can be performed by a known method. For example, in an organic solvent, an acid component such as an approximately equimolar aromatic tetracarboxylic dianhydride and a diamine component are randomly polymerized or block polymerized. Is achieved. May also be mixed with the reaction conditions was keep two or more polyimide precursors in which either of these two components is excessive, the respective polyimide precursor solution together.
- the polyimide precursor solution thus obtained can be used for the production of a self-supporting film as it is or after removing or adding a solvent if necessary.
- the polyimide precursor solution (b) can be cast on a support, and the self-supporting film can be peeled off from the support, and then a self-supporting film that can be stretched in at least one direction can be formed.
- the viscosity of the solution such as the type and concentration of various additives added to the solution as necessary, such as the type of polymer, the degree of polymerization, and the concentration, can be used.
- the polyimide solution can be produced by a known method.
- a known polymerization solvent can be used, for example, N-methyl-2-pyrrolidone, N, N-dimethylacetamide, N, N-diethyl.
- examples include amides such as acetamide, N, N-dimethylformamide, N, N-diethylformamide, hexamethylsulfuramide, sulfoxides such as dimethylsulfoxide and diethylsulfoxide, and sulfones such as dimethylsulfone and diethylsulfone. These solvents may be used alone or as a mixture.
- the polyimide precursor solution may contain an imidization catalyst, an organic phosphorus-containing compound, fine particles such as inorganic fine particles and organic fine particles, and a dehydrating agent as necessary.
- the polyimide solution may contain an organic phosphorus-containing compound, fine particles such as inorganic fine particles and organic fine particles, if necessary.
- the concentration of all monomers in the organic polar solvent is preferably 5 to 40% by mass, more preferably 6 to 35% by mass, particularly preferably.
- the polyimide precursor solution (a) and polyimide solution (a) used for the surface layer are preferably 10 to 30% by mass, and the concentration of all monomers in the organic polar solvent is 1 to 15% by mass, particularly 2 to 8% by mass. % Is preferred.
- the polyimide solution (a) and the polyimide precursor solution (a) can be prepared by preparing a polymer solution having a high monomer concentration in advance and diluting the polymer solution with a solvent.
- the polymerization reaction of the acid component such as the aromatic tetracarboxylic dianhydride and the aromatic diamine component is, for example, substantially equimolar or either component ( Acid component or diamine component) in a slight excess, and the mixture is reacted at a reaction temperature of 100 ° C. or less, preferably 0 to 80 ° C., more preferably 10 to 50 ° C. for about 0.2 to 60 hours.
- a polyamic acid (polyimide precursor) solution can be obtained.
- the solution viscosity may be appropriately selected according to the purpose of use (casting, extrusion, etc.) and the purpose of production, and was measured at 30 ° C.
- the rotational viscosity is preferably about 100 to 10,000 poise, preferably 400 to 5000 poise, more preferably 1000 to 3000 poise. Therefore, it is desirable to carry out the polymerization reaction up to about the viscosity of the solution used.
- the solution viscosity may be appropriately selected according to the purpose of use (casting, extrusion, etc.) and the purpose of production, and was measured at 30 ° C.
- the rotational viscosity is preferably about 0.1 to 5000 poise, particularly 0.5 to 2000 poise, more preferably about 1 to 2000 poise. Therefore, it is desirable to carry out the polymerization reaction up to about the viscosity of the solution used.
- the polyimide solution (a) or the polyimide precursor solution (a) is preferably in the range of 1 to 10% by mass, more preferably 1.5 to 8% by mass, and particularly preferably 3 to 6% by mass with respect to 100% by mass. Is preferred.
- the surface treatment agent can be used by mixing with the polyimide solution (a) or the polyimide precursor solution (a).
- various coupling agents such as silane coupling agents, borane coupling agents, aluminum coupling agents, aluminum chelating agents, titanate coupling agents, iron coupling agents, copper coupling agents, and chelating agents.
- An agent etc. can be mentioned.
- silane coupling agents include epoxy silanes such as ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyldiethoxysilane, ⁇ - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, and vinyltrichloro.
- Silane vinyltris ( ⁇ -methoxyethoxy) silane, vinyltriethoxysilane, vinyltrimethoxysilane and other vinylsilanes, ⁇ -methacryloxypropyltrimethoxysilane and other acrylic silanes, N- ⁇ - (aminoethyl) - ⁇ - Aminosilanes such as aminopropyltrimethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropylmethyldimethoxysilane, ⁇ -aminopropyltriethoxysilane, N-phenyl- ⁇ -aminopropyltrimethoxysilane, ⁇ -mercapto Propyltri Tokishishiran, .gamma.-chloropropyl trimethoxy silane and the like.
- N- ⁇ - (aminoethyl) - ⁇ - Aminosilanes such as aminopropyltrimethoxysilane, N
- titanate coupling agents isopropyl triisostearoyl titanate, isopropyl tridecylbenzenesulfonyl titanate, isopropyl tris (dioctylpyrophosphate) titanate, tetraisopropylbis (dioctyl phosphite) titanate, tetra (2,2-diallyloxy) Methyl-1-butyl) bis (di-tridecyl) phosphite titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate, isopropyltrioctanoyl titanate, isopropyltricumylphenyl titanate, etc. .
- silane coupling agents especially ⁇ -aminopropyl-triethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropyl-triethoxysilane, N- (aminocarbonyl) - ⁇ -aminopropyl
- silane coupling agents especially ⁇ -aminopropyl-triethoxysilane, N- ⁇ - (aminoethyl) - ⁇ -aminopropyl-triethoxysilane, N- (aminocarbonyl) - ⁇ -aminopropyl
- aminosilane coupling agents are preferred, and N-phenyl- ⁇ -aminopropyltrimethoxysilane is particularly preferred.
- the imidization catalyst examples include a substituted or unsubstituted nitrogen-containing heterocyclic compound, an N-oxide compound of the nitrogen-containing heterocyclic compound, a substituted or unsubstituted amino acid compound, an aromatic hydrocarbon compound having a hydroxyl group, or an aromatic heterocyclic compound.
- Cyclic compounds such as 1,2-dimethylimidazole, N-methylimidazole, N-benzyl-2-methylimidazole, 2-methylimidazole, 2-ethyl-4-methylimidazole, 5-methylbenzimidazole, etc.
- Benzimidazoles such as alkylimidazole and N-benzyl-2-methylimidazole, isoquinoline, 3,5-dimethylpyridine, 3,4-dimethylpyridine, 2,5-dimethylpyridine, 2,4-dimethylpyridine, 4-n- Substituted pyridines such as propylpyridine It can be used to apply.
- the amount of the imidization catalyst used is preferably about 0.01 to 2 times equivalent, particularly about 0.02 to 1 time equivalent to the amic acid unit of the polyamic acid.
- organic phosphorus-containing compounds examples include monocaproyl phosphate, monooctyl phosphate, monolauryl phosphate, monomyristyl phosphate, monocetyl phosphate, monostearyl phosphate, triethylene glycol monotridecyl Monophosphate of ether, monophosphate of tetraethylene glycol monolauryl ether, monophosphate of diethylene glycol monostearyl ether, dicaproyl phosphate, dioctyl phosphate, dicapryl phosphate, dilauryl phosphate, dimyristyl phosphate, Dicetyl phosphate, distearyl phosphate, diethylene phosphate of tetraethylene glycol mononeopentyl ether, trie Diphosphate of glycol mono tridecyl ether, diphosphate of tetraethyleneglycol monolauryl ether, and phosphoric acid esters such as diphosphate esters of diethylene glycol monostearyl
- ammonia monomethylamine, monoethylamine, monopropylamine, monobutylamine, dimethylamine, diethylamine, dipropylamine, dibutylamine, trimethylamine, triethylamine, tripropylamine, tributylamine, monoethanolamine, diethanolamine, triethanol An amine etc. are mentioned.
- Examples of the fine particles include organic fine particles and inorganic fine particles.
- organic fine particles examples include organic fine particles that do not dissolve in the polyimide solution and the polyimide precursor solution, and fine particles of polymer compounds such as polyimide fine particles and aramid fine particles, and fine particles of a crosslinked resin such as an epoxy resin. I can do it.
- Inorganic fine particles include fine particle titanium dioxide powder, silicon dioxide (silica) powder, magnesium oxide powder, aluminum oxide (alumina) powder, inorganic oxide powder such as zinc oxide powder, fine particle silicon nitride powder, and titanium nitride powder.
- Inorganic nitride powder such as silicon carbide powder, inorganic carbide powder such as silicon carbide powder, and inorganic salt powder such as particulate calcium carbonate powder, calcium sulfate powder, and barium sulfate powder.
- These inorganic fine particles may be used in combination of two or more. In order to uniformly disperse these inorganic fine particles, a means known per se can be applied.
- the metallizing polyimide film of the present invention can be used as it is, or if necessary, the surface of the polyimide layer (a) or polyimide layer (b) by corona discharge treatment, low-temperature plasma discharge treatment or atmospheric pressure plasma discharge treatment, chemical etching, etc. It can be used after processing.
- Examples thereof include a method in which a metal layer is provided on a polyimide film by a metalizing method such as sputtering or metal vapor deposition, and the metal layer is electrolessly or electroplated.
- the metallizing method is a method of providing a metal layer different from metal plating or metal foil lamination, and a known method such as vacuum deposition, sputtering, ion plating, or electron beam can be used.
- Metals used in the metalizing method include metals such as copper, nickel, chromium, manganese, aluminum, iron, molybdenum, cobalt, tungsten, vanadium, titanium, tantalum, or alloys thereof, or oxides or metals of these metals.
- Metal compounds such as carbides can be used, but are not particularly limited to these materials.
- the thickness of the metal layer formed by the metallizing method can be appropriately selected according to the purpose of use, and is preferably 1 to 500 nm, more preferably 5 to 200 nm because it is suitable for practical use.
- the number of metal layers formed by the metalizing method can be appropriately selected according to the purpose of use, and may be one layer, two layers, or three or more layers.
- a metal layer is formed on the polyimide layer (a) of the polyimide film by metalizing, a metal such as nickel, chromium, manganese, aluminum, iron, molybdenum, cobalt, tungsten, vanadium, titanium, tantalum, or the like It is preferable to form a metal layer of an alloy or a metal compound such as an oxide of these metals or a metal carbide, and further form a copper or copper alloy layer thereon.
- the metal laminated polyimide film obtained by the metalizing method can be provided with a metal plating layer such as copper or tin on the surface of the metal layer by a known wet plating method such as electrolytic plating or electroless plating.
- the film thickness of the metal plating layer such as copper plating is preferably in the range of 1 ⁇ m to 40 ⁇ m because it is suitable for practical use.
- the polyimide film for metallizing of the present invention is a polyimide film metal laminate and a wiring substrate is an insulating substrate material such as FPC, TAB, COF or a metal wiring substrate, a metal substrate, a cover substrate such as a chip member such as an IC chip, etc. It can be suitably used as a base substrate for materials, liquid crystal displays, organic electroluminescence displays, electronic paper, solar cells and the like.
- the polyimide metal laminate of the present invention can produce a wiring member in which a part of the metal layer on one or both sides of the film is removed by a known method such as etching to form a metal wiring on the top of the film.
- the wiring member is preferably formed so that most of the metal wiring or the connection portion with the IC chip or the vicinity thereof is formed in a direction orthogonal to the extending direction in order to improve accuracy with respect to thermal expansion.
- the wiring member can be used by mounting or connecting at least one chip member such as an IC chip.
- the wiring member can be used by stacking members that cover other wiring.
- chip member such as an IC chip
- a known chip member can be exemplified
- a semiconductor chip such as a silicon chip
- semiconductor chips having various functions such as liquid crystal display driving, system use, and memory use can be mentioned. I can do it.
- the polyimide film metal laminate and the wiring substrate can be mounted with a resistor, a capacitor and the like in addition to the chip member.
- a polyimide metal laminate manufactured using a polyimide film having a linear expansion coefficient in the width direction manufactured by the manufacturing method of the present invention is smaller than the linear expansion coefficient in the length direction is a wiring having metal wiring at least in the length direction. It is preferably used for a member.
- the polyimide film whose width direction linear expansion coefficient produced by the production method of the present invention is smaller than the length direction linear expansion coefficient is a metal layer formed by the metalizing method, a part of the metal layer is removed,
- a wiring member can be manufactured mainly by forming metal wiring in the length direction, and is particularly excellent when used for connection to an IC chip or a glass substrate.
- the physical properties of the self-supporting film and the polyimide film were evaluated according to the following methods.
- the peak area between 1560.13 cm ⁇ 1 and 1432.2.8 cm ⁇ 1 is X1
- the peak area of 1798.30 cm ⁇ 1 to 1747.19 cm ⁇ 1 is X2
- the area ratio (X1 / X2) on the A side of the self-supporting film is a1
- the area ratio (X1 / X2) on the B side of the self-supporting film is b1
- the area ratio (X1 / X2) on the A side of the completely imidized film is a2
- the area ratio (X1 / X2) on the B-side of the film that has been completely imidized is defined as b2.
- Linear expansion coefficient measurement method linear expansion coefficient in the width direction: average linear expansion at 50 ° C. to 200 ° C. when TMA / SS6100 manufactured by Seiko Instruments Inc. is used and the temperature is increased at a rate of 20 ° C./min. The coefficient was measured.
- Peel strength (90 ° peel strength): A sample with a width of 2 to 10 mm in an air-conditioned environment at a temperature of 23 ° C. according to the method A described in JIS C6471 peel strength of copper foil Measurement was performed using a piece.
- Example 1 Manufacture of stretched polyimide film
- the polyimide precursor solution (X) of Reference Example 1 obtained as a base film dope was continuously cast on a stainless steel substrate (support) so that the film thickness after heating and drying was 35 ⁇ m, and 140 ° C.
- the film was dried with hot air and peeled from the support to obtain a self-supporting film.
- the surface of the self-indicating film in contact with the support is coated with the polyimide precursor solution (Y1) of Reference Example 2 using a die coater so that the thickness after drying is 0.5 ⁇ m.
- the temperature is gradually raised from 200 ° C. to 575 ° C.
- the self-supporting film contained 32% by mass of the solvent, and the imidization ratio was 25%.
- a nickel chromium alloy layer having a chromium concentration of 15% by weight as a metal layer is formed to a thickness of 5 nm by sputtering. Formed.
- a copper layer was formed to a thickness of 300 nm by a sputtering method, and then a copper plating layer was formed to a thickness of 20 ⁇ m by an electrolytic copper plating method to obtain a copper-plated laminated polyimide film.
- the adhesion strength (90 ° peel strength) between the copper plating layer of the copper-plated laminated polyimide film and the polyimide was measured, and the results are shown in Table 1.
- Example 2 A stretched polyimide film was produced in the same manner as in Example 1 except that the polyimide precursor solution (Y2) of Reference Example 3 was used as the polyimide precursor solution for surface coating. The linear expansion coefficient of the stretched polyimide film was measured, and the results are shown in Table 1.
- Example 1 Using the obtained stretched polyimide film, a copper plating laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1. As in Example 1, the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured, and the results are shown in Table 1.
- Example 1 Using the obtained unstretched polyimide film, a copper plating laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1. As in Example 1, the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured, and the results are shown in Table 1.
- Example 1 Using the obtained stretched polyimide film, a copper plating laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1. As in Example 1, the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured, and the results are shown in Table 1.
- Example 1 Using the obtained stretched polyimide film, a copper plating laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1. As in Example 1, the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured, and the results are shown in Table 1.
- Example 1 Using the obtained stretched polyimide film, a copper plating laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1. As in Example 1, the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured, and the results are shown in Table 1.
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Abstract
Description
ポリイミド層(b)は、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物を含む酸成分と、p-フェニレンジアミンを含むジアミン成分とから得られるポリイミドであり、
ポリイミド層(a)は、フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンを含むモノマー成分より得られるポリイミドであり、さらに表面処理剤を含むことを特徴とするメタライジング用のポリイミドフィルムに関する。
(i)ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)の自己支持性フィルム上に、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)を塗工し、次いで、このフィルムを、異方性の線膨張係数を有するように、少なくとも1方向に延伸又は収縮させ、加熱して得られたもの、
又は、
(ii)ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)と、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)とを共押出して得られる自己支持性フィルムを、異方性の線膨張係数を有するように、少なくとも1方向に延伸又は収縮させ、加熱して得られたものである。
ポリイミド層(b)は、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物を含む酸成分と、p-フェニレンジアミンを含むジアミン成分とから得られるポリイミドを用い、
ポリイミド層(a)は、フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンを含むモノマー成分より得られるポリイミドを用い、
ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)を支持体にキャスト・乾燥して自己支持性フィルムを製造し、
このポリイミド層(b)を得ることができる自己支持性フィルム上に、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)を塗工し、
その後、ポリイミド前駆体溶液(a)を塗工した自己支持性フィルムを、MD方向とTD方向に異なる線膨張係数を有するフィルムが得られるように、少なくとも1方向に延伸し加熱することを特徴とするメタライジング用のポリイミドフィルムの製造方法に関する。
ポリイミドフィルムのポリイミド層(a)の表面に、メタライジング法により金属層を積層したことを特徴とする金属積層ポリイミドフィルムに関する。
1)ポリイミド層(b)が得られるポリイミド前駆体溶液(b)を支持体にキャストし乾燥して自己支持性フィルムを得て、得られる自己支持性フィルムに、ポリイミド層(a)が得られる表面処理剤含有のポリイミド溶液(a)または表面処理剤含有のポリイミド前駆体溶液(a)を塗工する第一工程と、塗工フィルムを、少なくとも1方向に延伸し、最高加熱温度350℃~600℃で熱処理する第二工程を含む方法、
2)ポリイミド層(b)が得られるポリイミド溶液(b)またはポリイミド前駆体溶液(b)と、ポリイミド層(a)が得られる表面処理剤含有のポリイミド溶液(a)または表面処理剤含有のポリイミド前駆体溶液(a)とをダイなどを用いて共押出により支持体にキャストし乾燥して自己支持性フィルムを得る第一工程と、自己支持性フィルムを、少なくとも1方向に延伸し、最高加熱温度350℃~600℃で熱処理する第二工程を含む方法、
3)ポリイミド層(b)が得られるポリイミド前駆体溶液(b)を支持体にキャストし乾燥して自己支持性フィルムを得て、得られる自己支持性フィルムに、表面処理剤を含有しないポリイミド溶液(a)または表面処理剤を含有しないポリイミド前駆体溶液(a)を塗工し、必要に応じて乾燥した後(ポリイミド前駆体溶液(a)中のポリイミド前駆体の一部がイミド化してもよい)、さらにポリイミド前駆体溶液(a)側に、表面処理剤含有溶液を塗工し、必要に応じて乾燥する第一工程と、塗工フィルムを、少なくとも1方向に延伸し、最高加熱温度350℃~600℃で熱処理する第二工程を含む方法、
または、
4)ポリイミド層(b)が得られるポリイミド溶液(b)またはポリイミド前駆体溶液(b)と、表面処理剤を含有しないポリイミド溶液(a)または表面処理剤を含有しないポリイミド前駆体溶液(a)とをダイなどを用いて共押出により支持体にキャストし乾燥して自己支持性フィルムを得て、得られる自己支持性フィルムに、表面処理剤含有溶液を塗工し、必要に応じて乾燥する第一工程と、塗工フィルムを、少なくとも1方向に延伸し、最高加熱温度350℃~600℃で熱処理する第二工程を含む方法、
などを挙げることができる。
単層又は複層の押出形成用ダイスが設置された製膜装置を使用して、まず、前記ダイスに、1種又は複数の種類のポリイミド前駆体の溶媒溶液を供給し、ダイスの吐出口(リップ部)から単層又は複層の薄膜状体として支持体(エンドレスベルトやドラムなど)上に押出して、ポリイミド前駆体の溶媒溶液の略均一な厚さの薄膜を形成し、キャスティング炉の内部で、支持体(エンドレスベルトやドラムなど)を移動させながらポリイミド前駆体のイミド化が完全には進まない温度、好ましくは50~210℃、さらに好ましくは60~200℃であり、かつ有機溶媒の一部又は大部分が除去できる温度に加熱して、溶媒を徐々に除去することにより、自己支持性になるまで前乾燥を行い、得られた自己支持性フィルムを支持体から剥離し、自己支持性フィルムの片面又は両面に、表面処理剤を含むポリイミド前駆体又はポリイミド溶液の塗工や吹き付けなどを行い、さらに必要に応じて主として塗工溶媒を乾燥や抽出などの手段で除去する工程を有する第一工程、
自己支持性フィルムを加熱温度80~300℃、好ましくは90~240℃でMD方向又はTD方向に延伸を開始し、必要なら中間加熱温度で加熱し、さらに最終加熱温度で加熱してイミド化する第二工程、
さらに長尺状のポリイミドを巻取り、ロール状のポリイミドフィルムを得る第三工程として、連続してポリイミドフィルムの製造を行うことが出来る。
また、上記の自己支持性フィルムのイミド化率は、IR(ATR)で測定し、フィルムとフルキュア品との振動帯ピーク面積の比を利用して、イミド化率を算出することができる。振動帯ピークとしては、イミドカルボニル基の対称伸縮振動帯やベンゼン環骨格伸縮振動帯などを利用する。またイミド化率測定に関し、特開平9-316199号公報に記載のカールフィッシャー水分計を用いる手法もある。
2,3,3’,4’-ビフェニルテトラカルボン酸二無水物、ピロメリット酸二無水物、3,3’,4,4’-ベンゾフェノンテトラカルボン酸二無水物、3,3’,4,4’-ジフェニルエーテルテトラカルボン酸二無水物及び1,4-ヒドロキノンジベンゾエート-3,3’,4,4’-テトラカルボン酸二無水物より選ばれる成分を少なくとも1種含む酸成分と、
m-フェニレンジアミン、4,4’-ジアミノジフェニルエーテル、3,4’-ジアミノジフェニルエーテル、3,3’-ジアミノジフェニルエーテル、o-トリジン、m-トリジン及び4,4’-ジアミノベンズアニリドなどのベンゼン核が1~2個のジアミン(2個のベンゼン核間に、エチレン鎖などのC2以上のアルキル鎖を含まない)より選ばれる成分を少なくとも1種含むジアミン成分を含むことができる。
1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物、ピロメリット酸二無水物及び1,4-ヒドロキノンジベンゾエート-3,3’,4,4’-テトラカルボン酸二無水物より選ばれる成分を少なくとも1種含む酸成分と、
2)フェニレンジアミン及びジアミノジフェニルエーテル以外に、o-トリジン、m-トリジン及び4,4’-ジアミノベンズアニリドなどのベンゼン核が1~2個のジアミン(2個のベンゼン核間に、エチレン鎖などのC2以上のアルキル鎖を含まない)より選ばれる成分を少なくとも1種含むジアミン成分とから得られるポリイミドであることが好ましい。ポリイミド(a)をこのようなポリイミドとすることにより、埋まりこみ性の小さなポリイミドフィルムを得ることができる。
3,3’,4,4’-ビフェニルテトラカルボン酸二無水物及びピロメリット酸二無水物から選ばれる少なくとも1種の酸成分と、p-フェニレンジアミン、4,4’-ジアミノジフェニルエーテル及び3,4’-ジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミン成分との組み合わせを挙げることができる。
ポリイミドフィルム上にスパッタリングや金属蒸着などのメタライジング法により金属層を設け、さらにその金属層に無電解若しくは電解メッキを行う方法、を挙げることができる。
完全にイミド化が進んだフィルムは、480℃、5分間加熱したものである。また、フィルムは、キャストした支持体側をA面、気体側をB面とする。
1560.13cm-1~1432.85cm-1のピーク面積をX1、
1798.30cm-1~1747.19cm-1のピーク面積をX2として、
自己支持性フィルムのA面側の面積比(X1/X2)をa1、
自己支持性フィルムのB面側の面積比(X1/X2)をb1、
完全にイミド化が進んだフィルムのA面側の面積比(X1/X2)をa2、
完全にイミド化が進んだフィルムのB面側の面積比(X1/X2)をb2とする。
(基体のポリイミド前駆体溶液の合成)
3,3’,4,4’-ビフェニルテトラカルボン酸二無水物(s-BPDA)と当モル量のp-フェニレンジアミン(PPD)とをN,N-ジメチルアセトアミド中で、30℃、3時間重合して、18質量%濃度のポリアミック酸溶液を得た。このポリアミック酸溶液に、ポリアミック酸100質量部に対して0.1質量部のモノステアリルリン酸エステルトリエタノールアミン塩、次いでポリアミック酸100質量部に対して0.5質量部のシリカフィラー(平均粒径0.08μm、日産化学社製ST-ZL)を添加して均一に混合して、ポリイミド前駆体溶液(X)を得た。
(表面塗工用のポリイミド前駆体溶液の合成)
3,3’,4,4’-ビフェニルテトラカルボン酸二無水物と当モル量のp-フェニレンジアミンとをN,N-ジメチルアセトアミド中で、30℃、3時間重合して、3.0質量%濃度のポリアミック酸溶液を得た。このポリアミック酸溶液に、さらにポリアミック酸100質量部に対して0.5質量部のシリカフィラー(平均粒径0.08μm、日産化学社製ST-ZL)及び溶液濃度が3質量%となる割合でγ―フェニルアミノプロピルトリメトキシシランを添加した後、均一に混合して、ポリイミド前駆体溶液(Y1)を得た。
(表面塗工用のポリイミド前駆体溶液の合成)
3,3’,4,4’-ビフェニルテトラカルボン酸二無水物と当モル量の4,4’-ジアミノジフェニルエーテル(DADE)とをN,N-ジメチルアセトアミド中で、30℃、3時間重合して、3.0質量%濃度のポリアミック酸溶液を得た。このポリアミック酸溶液に、さらにポリアミック酸100質量部に対して0.5質量部のシリカフィラー(平均粒径0.08μm、日産化学社製ST-ZL)及び溶液濃度が3質量%となる割合でγ―フェニルアミノプロピルトリメトキシシランを添加した後、均一に混合して、ポリイミド前駆体溶液(Y2)を得た。
(表面塗工用のポリイミド前駆体溶液の合成)
3,3’,4,4’-ビフェニルテトラカルボン酸二無水物と当モル量のp-フェニレンジアミンとをN,N-ジメチルアセトアミド中で、30℃、3時間重合して、3.0質量%濃度のポリアミック酸溶液を得た。このポリアミック酸溶液に、さらにポリアミック酸100質量部に対して0.5質量部のシリカフィラー(平均粒径0.08μm、日産化学社製ST-ZL)を添加した後、均一に混合して、ポリイミド前駆体溶液(Y3)を得た。
(延伸ポリイミドフィルムの製造)
ベースフィルム用ドープとして得られた参考例1のポリイミド前駆体溶液(X)を、加熱乾燥後のフィルム厚みが35μmになるようにステンレス基板(支持体)上に連続的に流延し、140℃の熱風で乾燥を行い、支持体から剥離して自己支持性フィルムを得た。この自己指示性フィルムの支持体に接した面に、参考例2のポリイミド前駆体溶液(Y1)を乾燥後の厚みが0.5μmとなるようにダイコーターを用いて塗工し、塗工後の自己支持性フィルムを加熱炉で加熱する際に、幅方向に7%延伸させながら加熱炉で200℃から575℃に徐々に昇温して溶媒を除去し、イミド化を行って延伸ポリイミドフィルムを得た。延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。延伸ポリイミドフィルムは連続して製造した。
延伸ポリイミドフィルムのポリイミド前駆体溶液の塗工側に、プラズマ処理によりポリイミドフィルムの表面をクリーニングした後、金属層として、クロム濃度が15重量%のニッケルクロム合金層を、スパッタリング法によって5nmの膜厚に形成した。続いて銅層を、スパッタリング法によって300nmの膜厚に形成した後に、電解銅メッキ法によって銅メッキ層を20μmの厚みになるように形成し、銅メッキ積層ポリイミドフィルムを得た。銅メッキ積層ポリイミドフィルムの銅メッキ層とポリイミドとの密着強度(90°ピール強度)を測定し、結果を表1に示す。
表面塗工用のポリイミド前駆体溶液として、参考例3のポリイミド前駆体溶液(Y2)を用いた以外は、実施例1と同様にして、延伸ポリイミドフィルムを製造した。延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。
ベースフィルム用ドープとして得られた参考例1のポリイミド前駆体溶液(X)を、加熱乾燥後のフィルム厚みが35μmになるようにステンレス基板(支持体)上に連続的に流延し、140℃の熱風で乾燥を行い、支持体から剥離して自己支持性フィルムを得た。この自己指示性フィルムの支持体に接した面に、ポリイミド前駆体を含まない3質量%のγ―フェニルアミノプロピルトリメトキシシランを含むN,N-ジメチルアセトアミドを7g/m2の量をダイコーターを用いて塗工し乾燥し、塗工後の自己支持性フィルムを加熱炉で200℃から575℃に徐々に昇温して溶媒を除去し、イミド化を行って未延伸ポリイミドフィルムを得た。未延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。未延伸ポリイミドフィルムは連続して製造した。
実施例1の延伸ポリイミドフィルムの製造において、参考例2のポリイミド前駆体溶液(Y1)を塗工する代わりに、ポリイミド前駆体を含まない3質量%のγ―フェニルアミノプロピルトリメトキシシランを含むN,N-ジメチルアセトアミドを7g/m2の量を塗工した以外は、実施例1と同様にして、延伸ポリイミドフィルムを製造した。延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。
実施例1の延伸ポリイミドフィルムの製造において、参考例2のポリイミド前駆体溶液(Y1)に代えて、参考例2のポリイミド前駆体溶液(Y1)からγ―フェニルアミノプロピルトリメトキシシランを除いたシランカップリング剤を含まないポリイミド前駆体溶液を用いた以外は、実施例1と同様にして、延伸ポリイミドフィルムを製造した。延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。
実施例2の延伸ポリイミドフィルムの製造において、参考例3のポリイミド前駆体溶液(Y2)に代えて、参考例3のポリイミド前駆体溶液(Y2)からγ―フェニルアミノプロピルトリメトキシシランを除いたシランカップリング剤を含まないポリイミド前駆体溶液を用いた以外は、実施例2と同様にして、延伸ポリイミドフィルムを製造した。延伸ポリイミドフィルムの線膨張係数を測定し、結果を表1に示す。
Claims (13)
- 異方性の線膨張係数を有し、ポリイミド層(b)の片面又は両面にポリイミド層(a)が積層されたメタライジング用のポリイミドフィルムであり、
ポリイミド層(b)は、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物を含む酸成分と、p-フェニレンジアミンを含むジアミン成分とから得られるポリイミドであり、
ポリイミド層(a)は、フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンを含むモノマー成分より得られるポリイミドであり、さらに表面処理剤を含むことを特徴とするメタライジング用のポリイミドフィルム。 - (i)ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)の自己支持性フィルム上に、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)を塗工し、次いで、このフィルムを、異方性の線膨張係数を有するように、少なくとも1方向に延伸又は収縮させ、加熱して得られたものであること、
又は、
(ii)ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)と、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)とを共押出して得られる自己支持性フィルムを、異方性の線膨張係数を有するように、少なくとも1方向に延伸又は収縮させ、加熱して得られたものであること、
を特徴とする請求項1に記載のメタライジング用のポリイミドフィルム。 - ポリイミド層(a)は、フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンをジアミン成分100モル%中30~100モル%含むモノマー成分より得られるポリイミドであることを特徴とする請求項1又は請求項2に記載のメタライジング用のポリイミドフィルム。
- ポリイミド層(a)のフェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンは、p-フェニレンジアミン及び4,4’-ジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンであることを特徴とする請求項1~3のいずれか1項に記載のメタライジング用のポリイミドフィルム。
- MD方向の線膨張係数(LMD)とTD方向の線膨張係数(LTD)とが、|(LMD-LTD)|>5ppmの関係であることを特徴とする請求項1~4のいずれか1項に記載のメタライジング用のポリイミドフィルム。
- ポリイミド層(a)の厚みが、0.05~2μmであることを特徴とする請求項1~5のいずれか1項に記載のメタライジング用のポリイミドフィルム。
- 請求項1~6のいずれか1項に記載のメタライジング用のポリイミドフィルムのポリイミド層(a)の表面に、メタライジング法により金属層を積層したことを特徴とする金属積層ポリイミドフィルム。
- 請求項7に記載の金属積層ポリイミドフィルムの金属層に、金属メッキ法により金属メッキ層を設けたことを特徴とする金属メッキ積層ポリイミドフィルム。
- ポリイミド層(b)の片面又は両面にポリイミド層(a)を積層した異方性の線膨張係数を有する長尺状のメタライジング用のポリイミドフィルムの製造方法であり、
ポリイミド層(b)は、3,3’,4,4’-ビフェニルテトラカルボン酸二無水物を含む酸成分と、p-フェニレンジアミンを含むジアミン成分とから得られるポリイミドを用い、
ポリイミド層(a)は、フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンを含むモノマー成分より得られるポリイミドを用い、
ポリイミド層(b)を得ることができるポリイミド前駆体溶液(b)を支持体にキャスト・乾燥して自己支持性フィルムを製造し、
このポリイミド層(b)を得ることができる自己支持性フィルム上に、ポリイミド層(a)を得ることができ、且つ表面処理剤を含有するポリイミド前駆体溶液(a)を塗工し、
その後、ポリイミド前駆体溶液(a)を塗工した自己支持性フィルムを、MD方向とTD方向に異なる線膨張係数を有するフィルムが得られるように、少なくとも1方向に延伸し加熱することを特徴とするメタライジング用のポリイミドフィルムの製造方法。 - ポリイミド層(a)は、ジアミン成分100モル%中フェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンを30~100モル%含むジアミン成分を用いて得られることを特徴とする請求項9に記載のメタライジング用のポリイミドフィルムの製造方法。
- ポリイミド層(a)のフェニレンジアミン及びジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンは、p-フェニレンジアミン及び4,4’-ジアミノジフェニルエーテルから選ばれる少なくとも1種のジアミンであることを特徴とする請求項9又は請求項10に記載のメタライジング用のポリイミドフィルムの製造方法。
- ポリイミドフィルムは、MD方向の線膨張係数(LMD)とTD方向の線膨張係数(LTD)とが、|(LMD-LTD)|>5ppmの関係であることを特徴とする請求項9~11のいずれか1項に記載のメタライジング用のポリイミドフィルムの製造方法。
- ポリイミド層(a)の厚みが、0.05~2μmであることを特徴とする請求項9~12のいずれか1項に記載のメタライジング用のポリイミドフィルムの製造方法。
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