WO2010119907A1 - 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
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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- WO2010119907A1 WO2010119907A1 PCT/JP2010/056714 JP2010056714W WO2010119907A1 WO 2010119907 A1 WO2010119907 A1 WO 2010119907A1 JP 2010056714 W JP2010056714 W JP 2010056714W WO 2010119907 A1 WO2010119907 A1 WO 2010119907A1
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- WIPO (PCT)
- Prior art keywords
- polyimide
- film
- layer
- polyimide film
- linear expansion
- Prior art date
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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
- 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
- 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
- B29C41/28—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 by depositing flowable material on an endless belt
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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
- B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin 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
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
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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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1635—Composition of the substrate
- C23C18/1639—Substrates other than metallic, e.g. inorganic or organic or non-conductive
- C23C18/1641—Organic substrates, e.g. resin, plastic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
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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
- 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
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
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- 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
- 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
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- B32B2255/205—Metallic coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2379/08—Polyimides
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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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- 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
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
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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
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- 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
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Definitions
- the present invention is a polyimide film which can be used as a material of electronic parts such as printed wiring boards, flexible printed boards, TAB tapes, COF tapes, reinforcing plates, etc. and which can provide a metal layer having excellent adhesion in all directions. , And their manufacturing methods.
- the polyimide film is used as an insulating member of the wiring of electric and electronic parts, and a cover member.
- Patent Document 1 shows a film made of an aromatic polyimide obtained from a solution of a polymer formed 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
- the film longitudinal direction (MD direction) and the transverse direction (TD direction) Ratio of coefficient of linear expansion with that (MD / TD) is about 1/5 to 4 and before and after heating from normal temperature to 400 ° C. and maintaining at a temperature of 400 ° C. for 2 hours
- a dimensionally stable polyimide film is disclosed, which is characterized in that the thermal dimensional stability indicated by the rate of change of film dimensions at room temperature is about 0.3% or less.
- Patent Document 2 is characterized in that the thermal expansion coefficient ⁇ MD of the film in the machine transport direction (MD) is 10 to 20 ppm / ° C., and the thermal expansion coefficient ⁇ TD of the width direction (TD) is 3 to 10 ppm / ° C. Polyimide films are disclosed.
- Patent Document 3 a solvent solution of a polyimide precursor is cast on a support as a continuous method of producing 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 longitudinal direction. Removing the solvent from the support as a self-supporting film, stretching the self-supporting film in the width direction at an initial heating temperature of 80 to 300 ° C., and then heating at a final heating temperature of 350 to 580 ° C. A method of making a polyimide film is described.
- the linear expansion coefficient of the polyimide film is the linear expansion coefficient of a substrate member such as a glass substrate or epoxy substrate connected to the wiring substrate, or the linear expansion coefficient of a chip member such as an IC chip mounted on the wiring substrate. It is desirable to approximate to a coefficient, and further, to approximate the linear expansion coefficient of the wiring substrate in the wiring direction to the linear expansion coefficient of the metal layer.
- the MD direction be close to the linear expansion coefficient of metal and the TD direction be close to the linear expansion coefficients of other substrates and chip members.
- a polyimide film having different linear expansion coefficients in the MD direction and the TD direction is manufactured by stretching in the length direction or the width direction.
- the adhesion is anisotropic.
- the adhesion to the metal layer provided by the metallization method has anisotropy.
- An object of the present invention is to provide a polyimide film having an anisotropic coefficient of linear expansion and having less directionality in adhesion to a metal or the like, and a method for producing them.
- the first of the present invention is a polyimide film having an anisotropic coefficient of linear expansion and having a polyimide layer (a) laminated on one side or both sides of the polyimide layer (b),
- the polyimide layer (a) relates to a polyimide film characterized by being obtained from a monomer component containing a diamine having a structure of the following chemical formula (1).
- R shows the monovalent group selected from the group shown by General formula (2).
- the first polyimide film of the present invention is (I) A polyimide precursor solution (a) capable of obtaining a polyimide layer (a) is coated on a self-supporting film of a polyimide precursor solution (b) capable of obtaining a polyimide layer (b), Then, the film is stretched or contracted in at least one direction so as to have an anisotropic linear expansion coefficient, and obtained by heating.
- Self-supporting film obtained by coextrusion of polyimide precursor solution (b) from which polyimide layer (b) can be obtained and polyimide precursor solution (a) from which polyimide layer (a) can be obtained Is obtained by stretching or shrinking in at least one direction so as to have an anisotropic linear expansion coefficient, and heating.
- the second of the present invention relates to a metal-laminated polyimide film wherein a metal layer is laminated on the surface of the polyimide layer (a) of the first polyimide film of the present invention directly or through an adhesive layer.
- the third of the present invention is a method for producing the first polyimide film of the present invention.
- the polyimide precursor solution (b) from which the polyimide layer (b) can be obtained is cast on a support and dried to produce a self-supporting film, On the self-supporting film from which this polyimide layer (b) can be obtained, the polyimide precursor solution (a) from which the polyimide layer (a) can be obtained is coated, Thereafter, the self-supporting film coated with the polyimide precursor solution (a) is stretched and heated in at least one direction so as to obtain a film having a linear expansion coefficient different in the MD direction and the TD direction.
- the present invention relates to a method for producing a polyimide film.
- the preferable aspect of the manufacturing method of the 1st polyimide film of this invention or the 3rd polyimide film of this invention is shown below. A plurality of these aspects can be arbitrarily combined.
- the polyimide layer (a) further contains an acid component, and at least one selected from pyromellitic dianhydride and 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride is 100 moles of the acid component It is a polyimide obtained from a monomer component containing 50 to 100 mol% in%.
- Polyimide film is (I) A polyimide precursor solution (a) capable of obtaining a polyimide layer (a) is coated on a self-supporting film of a polyimide precursor solution (b) capable of obtaining a polyimide layer (b), Then, the film is obtained by stretching or shrinking in at least one direction so as to have an anisotropic linear expansion coefficient, and heating it. Or (Ii) Self-supporting film obtained by coextrusion of polyimide precursor solution (b) from which polyimide layer (b) can be obtained and polyimide precursor solution (a) from which polyimide layer (a) can be obtained Obtained by stretching or shrinking in at least one direction so as to have an anisotropic linear expansion coefficient, and heating.
- the polyimide layer (a) is a polyimide obtained from a monomer component containing 30 to 100 mol% of a diamine having the structure of the chemical formula (1) in 100 mol% of the diamine component.
- the diamine having the structure of chemical formula (1) is diaminodiphenyl ether.
- the linear expansion coefficient (L MD ) in the MD direction and the linear expansion coefficient (L TD ) in the TD direction have a relationship of
- the thickness of the polyimide layer (a) is 0.05 to 2 ⁇ m.
- the polyimide film is used by laminating a metal layer directly or via an adhesive layer on the surface of the polyimide layer (a) of the polyimide film.
- the polyimide film of the present invention is a polyimide film having an anisotropic coefficient of linear expansion with less anisotropy in surface adhesion.
- the linear expansion coefficient (L MD ) in the MD direction and the linear expansion coefficient (L TD ) in the TD direction are preferably
- the linear expansion coefficient (L MD ) in the MD direction and the linear expansion coefficient (L TD ) in the TD direction are preferably (L MD -L TD )> 5 ppm, more preferably (L MD -L TD )> 6 ppm, still more preferably (L MD -L TD )> 7 ppm, particularly preferably (L MD -L TD )> 8 ppm Effect is obtained.
- the MD direction is a cast direction (casting direction, or winding direction, or length direction), and the TD direction is a width direction.
- the polyimide layer (a) of the polyimide film of the present invention is a polyimide obtained from an acid component and a diamine component containing a diamine of the following chemical formula (1).
- R represents a monovalent group selected from the group represented by the general formula (2).
- R 1 represents a hydrogen atom or a methyl group, and two R 1 may be the same or different.
- Diaminodiphenyl ethers such as 4,4'-diaminodiphenyl ether, 3,4'-diaminodiphenyl ether, 3,3'-diaminodiphenyl ether, 2) 1,3-bis (3-aminophenoxy) benzene, 1,4-bis (3-aminophenoxy) benzene, 1,3-bis (4-aminophenoxy) benzene, 1,4-bis (4-amino) Bis (aminophenoxy) benzenes such as phenoxy) benzene 3) Bis (aminophenoxy) biphenyls such as 4,4'-bis (4-aminophenoxy) biphenyl and 4,4'-bis (3-aminophenoxy) biphenyl; 4) Bis (aminophenoxy) diphenylmethanes such as 4,4'-bis (4-aminophenoxy) diphenylmethane, 4,4'-bis (3
- diaminodiphenyl ethers such as 4,4'-diaminodiphenyl ether, 3,4'-diaminodiphenyl ether, 3,3'-diaminodiphenyl ether and the like are preferable.
- the polyimide layer (a) may contain a diamine having the structure of the chemical formula (1) within a range not to impair the properties, and preferably 30 to 100 mol%, more preferably 50 to 100 mol% in 100 mol% of the diamine component. It is a polyimide obtained from a monomer component containing 100 mol%, more preferably 70 to 100 mol%, particularly preferably 85 to 100 mol%.
- the polyimide (a) a polyimide other than the “heat-resistant non-crystalline polyimide” described in the claims of JP-A-2005-272520 can be used, and JP-A-2003-251773 can be used. It is possible to use a polyimide which is not the “thermoplastic polyimide” described in the claims of the patent publication, and further, the “heat-resistant non-crystalline polyimide” described in the claims of the JP-A-2005-272520 and It is possible to use a polyimide which is not the “thermoplastic polyimide” described in the claim of JP-A-2003-251773.
- the polyimide (a) may contain a diamine other than the diamine having the structure of the chemical formula (1) within the range that does not impair the characteristics of the present invention, for example, p-phenylenediamine, m-phenylenediamine, 4,4′- Benzene nuclei such as diaminodiphenylmethane, o-tolidine, m-tolidine and 4,4'-diaminobenzanilide contain one or two diamines (C2 or more alkyl chains such as ethylene chain between two benzene nuclei) And the like, and these may be used alone or in combination of two or more.
- a diamine other than the diamine having the structure of the chemical formula (1) within the range that does not impair the characteristics of the present invention
- p-phenylenediamine, m-phenylenediamine, 4,4′- Benzene nuclei such as diaminodiphenylmethane
- o-tolidine m
- the acid component of the polyimide (a) is preferably at least one selected from 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride and pyromellitic acid dianhydride.
- the polyimide layer (a) contains 50 to 100% by mole of 100% by mole of the acid component, at least one selected from pyromellitic dianhydride and 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride. Is preferred.
- the acid component and the diamine component which comprise a polyimide (a), At least one acid component selected from 3,3 ′, 4,4′-biphenyltetracarboxylic acid dianhydride and pyromellitic acid 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 layer (b) it is preferable to use a heat-resistant polyimide constituting a base film which can be used as a material of electronic components such as a printed wiring board, a flexible printed board, a TAB tape, etc., a reinforcing plate.
- the polyimide layer (b) may be any one as long as it is excellent in heat resistance, excellent in strength and excellent in elasticity, and preferably further excellent in flex resistance if necessary.
- the polyimide which has at least one of the following characteristics can be used. (These features can be combined with multiple optional features.) 1) A single polyimide film having a glass transition temperature of 200 ° C. or higher, more preferably 300 ° C. or higher, which can not be confirmed, 2) In particular, those having a linear expansion coefficient (50 to 200 ° C.) (MD) of 5 ⁇ 10 ⁇ 6 to 20 ⁇ 10 ⁇ 6 cm / cm / ° C., 3) having a tensile modulus of elasticity (MD, ASTM-D882) of 300 kg / mm 2 or more, 4) Non-thermoplastic polyimide, And the like.
- MD linear expansion coefficient
- MD tensile modulus of elasticity
- polyimide of polyimide layer (b) (1) 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride, pyromellitic acid dianhydride and 1,4-hydroquinone dibenzoate-3,3', 4,4'-tetracarboxylic acid
- An acid component containing at least one component selected from anhydrides preferably an acid component containing at least 70 mol% or more, more preferably 80 mol% or more, more preferably 90 mol% or more of these acid components
- a polyimide or the like obtained from a diamine component containing at least 80% by mole, more preferably at least 90% by mole, can be used.
- the acid component which comprises the polyimide of polyimide layer (b), and a diamine component 1) 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride, p-phenylenediamine or p-phenylenediamine and 4,4'-diaminodiphenyl ether, 2) 3,3 ', 4,4'-biphenyltetracarboxylic acid dianhydride and pyromellitic acid dianhydride, and p-phenylenediamine or p-phenylenediamine and 4,4'-diaminodiphenyl ether 3) pyromellitic dianhydride, p-phenylenediamine and 4,4'-diaminodiphenyl ether, 4) A printed wiring board obtained by using 3,3 ′, 4,4′-biphenyltetracarboxylic acid dianhydride and p-phenylenediamine
- diamine component from which the polyimide of a polyimide layer (b) can be obtained in the range which does not impair the characteristic of this invention other than the diamine component shown above, m-phenylenediamine, 3,4'-diaminodiphenyl ether, 3,3'-diaminodiphenyl sulfide, 3,4'-diaminodiphenyl sulfide, 4,4'-diaminodiphenyl sulfide, 3,3'-diaminodiphenyl sulfone, 3 4,4'-Diaminodiphenyl sulfone, 4,4'-diaminodiphenyl sulfone, 3,3'-diaminobenzophenone, 4,4'-diaminobenzophenone, 3,4'-diaminobenzophenone, 3,3'-diaminodiphenylmethane, 4 Diamine components such as 4,4'
- the polyimide film of the present invention has a different coefficient of linear expansion in the plane direction of the film, for example, stretching in at least one direction, shrinkage in at least one direction, or stretching so as to have different coefficients of linear expansion in the plane direction of the film. It can be obtained by contraction and the like.
- the film may be stretched or shrunk in any plane direction, but in terms of operability and productivity, the TD direction or the MD direction is preferable.
- the linear expansion coefficient of the polyimide film of the present invention may be appropriately selected according to the application to be used, but when used for a wiring member or a reinforcing plate, the linear expansion coefficient (50 to 200 ° C.) in at least one direction, preferably MD
- the linear expansion coefficient in the direction or the TD direction, more preferably the linear expansion coefficient in the MD direction is 1 ⁇ 10 ⁇ 6 to 30 ⁇ 10 ⁇ 6 cm / cm / ° C., more preferably 5 ⁇ 10 ⁇ 6 to 25 ⁇ 10 ⁇ 6 cm / Cm / ° C, preferably 10 ⁇ 10 -6 to 20 ⁇ 10 -6 cm / cm / ° 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, and the polyimide layer (a) is obtained in the resulting self-supporting film
- a method comprising a first step of applying a polyimide solution (a) or a polyimide precursor solution (a), and a second step of stretching a coated film in at least one direction and heating to imidize the film;
- the side in contact with the support during casting may be wound on either the outside or the inside, but the process is simplified and the side in contact with the support during casting is used. It is preferable to wind it on the outside.
- drying may be performed by heating to a temperature at which imidation of the polyimide precursor does not proceed completely and at a temperature at which part or most of the organic solvent can be removed, inside the casting furnace, and further from the support It may be carried out until the film can be peeled off, and a self-supporting film can be obtained which can start stretching in the length direction or the width direction while heating in the second step.
- a solvent solution of one or more types of polyimide precursors is supplied to the die using a film forming apparatus provided with a single-layer or multi-layer extrusion forming die, and the discharge port of the die (The film is extruded as a single layer or multilayer thin film from the lip portion onto a support (endless belt, drum, etc.) to form a thin film of a solvent solution of a polyimide precursor in a substantially uniform thickness, and the inside of a casting furnace At a temperature at which imidation of the polyimide precursor does not proceed completely while moving the support (endless belt, drum, etc.), preferably 50 to 210 ° C., more preferably 60 to 200 ° C., and The pre-drying is performed until it becomes self-supporting by heating to a temperature at which part or most can be removed, and removing the solvent gradually, and peeling the obtained
- 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 imidation ratio of the self-supporting film is preferably 5 to 40%, more preferably 5.5 to 35%, still more preferably 6.0 to 30%, further preferably 10 to 40% by mass. A range of 28%, particularly preferably 15 to 27% is preferable because an excellent effect can be obtained.
- the solvent content (heat loss) of the above self-supporting film was determined by drying the film to be measured at 400 ° C. for 30 minutes, and using the weight W1 before drying and the weight W2 after drying according to the following equation It is a value.
- Heat loss (mass%) ⁇ (W1-W2) / W1 ⁇ x 100
- the imidization rate of the above self-supporting film can be measured by IR (ATR), and the imidization rate can be calculated by using the ratio of the vibration band peak area of the film to the full-cured product.
- vibration band peaks symmetrical stretching vibration bands of an imidocarbonyl group, benzene ring framework stretching vibration bands, and the like are used. Further, there is also a method using the Karl Fischer moisture meter described in JP-A-9-316199 for measuring the imidization rate.
- the side in contact with the air opposite to the body is the A side of the self-supporting film.
- the self-supporting film is peeled off from the support, and one side (A side or B side) of the self-supporting film
- a coating method such as a gravure coating method, a screen method, or an immersion method, using a polyimide solution (a) or a polyimide precursor solution (a) so that the thickness of the polyimide layer (a) is preferably 0.1 to 2 ⁇ m.
- the coated film is preferably dried at a drying temperature of preferably 50 to 180 ° C., particularly preferably 60 to 160 ° C., more preferably 70 to 150 ° C., preferably 0.1 to 20 minutes. , Particularly preferably 0.2 to 15 minutes to form a solidified film, and then preferably 100 gf / mm 2 or less, particularly preferably 80 gf / mm 2 or less Dried at a drying temperature of about 80 to 250 ° C., particularly preferably about 100 to 230 ° C., preferably for about 1 to 200 minutes, particularly preferably for 2 to 100 minutes. It is desirable to form a solidified film containing organic solvent and generated moisture in a proportion of about 5 to 25% by weight, in particular 10 to 23% by weight.
- any known material can be used, but the surface is made of a metal material such as a stainless steel material or a resin material such as polyethylene terephthalate.
- a metal material such as a stainless steel material or a resin material such as polyethylene terephthalate.
- a stainless steel belt, a stainless steel roll, and a polyethylene terephthalate belt are preferable, and examples thereof include a stainless steel belt, a stainless steel roll, and a polyethylene terephthalate belt.
- the surface of the support is preferably capable of uniformly forming a thin film of the solution.
- the surface of the support may be smooth, or grooves or embossments may be formed on the surface, but it is particularly preferable to be smooth.
- the self-supporting film peeled from the support preferably contains a solvent because stretching can be easily carried out.
- a known method can be used as a method of applying a polyimide precursor solution (a) or a polyimide solution (a) giving polyimide (a) to one side or both sides of a self-supporting film.
- known coating methods such as gravure coating method, spin coating method, silk screen method, dip coating method, spray coating method, bar coating method, knife coating method, roll coating method, blade coating method, die coating method and the like are listed. be able to.
- operations such as stretching and contraction of the self-supporting film, heating operations, etc. use a pin-type tenter, a clip-type tenter, a chuck-type tenter, etc. in all or part of the treatment. It is preferable to fix and perform the both ends of the width direction of a film.
- the polyimide film of the present invention may be stretched using a known method so as to obtain the target linear expansion coefficient and the target characteristics, and the stretching ratio is, for example, 0.7 to 1.9 times, preferably Can be selected from the range of 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 the stretching of the coated self-supporting film or the coextrusion self-supporting film is preferably in the range of 1.01 to 1.12 times, more preferably 1.04 to 1.11 times, More preferably, it is in the range of 1.05 to 1.10 times, more preferably in the range of 1.06 to 1.10 times, particularly preferably in the range of 1.07 to 1.09 times.
- An example of the 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 rolls or regulating the tension between rolls.
- the stretching is preferably performed while heating.
- Stretching of the film is performed in the second step, but may be performed in the first step.
- heating in the casting furnace of the first step and the heating in the second step, heating can be performed in a plurality of blocks (zones) having different temperatures, and heating in a casting furnace or a heating furnace having a plurality of heating blocks having different temperatures
- An apparatus etc. can be used.
- the stretching speed of the self-supporting film in the MD direction or TD direction may be selected as appropriate under which conditions such as the desired linear expansion coefficient can be obtained, preferably 1% / min to 20%. It is preferable to conduct stretching under the conditions of 1 / minute, more preferably 2% / minute to 10% / minute.
- a method of stretching the self-supporting film at once from a stretching ratio of 1 to a predetermined stretching ratio a method of stretching one by one, a method of stretching by an indeterminate ratio little by little, A method of stretching at a constant ratio, or a method of combining a plurality of these, and the like can be mentioned, and in particular, a method of stretching at a constant ratio little by little is preferable.
- the heating time of the stretching of the self-supporting film in the second step may be appropriately selected according to the apparatus used and the like, and is preferably 1 minute to 60 minutes.
- the stretching of the self-supporting film in the second step needs to be performed in a temperature range in which the self-supporting film can be stretched without any problem.
- the heating in the second step may be performed at a temperature at which imidization can be completely or almost completely performed, and the final heating temperature is 350 ° C. to 600 ° C., preferably 450 to 590 ° C., more preferably 490 to 580 ° C., further preferably It is desirable to heat in the range of 500 to 580 ° C., particularly preferably 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, an infrared heating furnace, and the like.
- the heat treatment in the second step is preferably performed in an atmosphere of an inert gas such as nitrogen or argon, or a heating gas such as air.
- the polyimide film of the present invention is obtained by heat treatment at 350 ° C. to 600 ° C., preferably 450 ° C. to 590 ° C., more preferably 490 ° C. to 580 ° C., still more preferably 500 ° C. to 580 ° C., particularly preferably 520 ° C. to 580 ° C.
- the polyimide film is preferably used as a material of electronic components such as a printed wiring board, a flexible printed board, a TAB tape, a reinforcing plate, and the like.
- the thickness of the polyimide film of the present invention is not particularly limited as long as it is appropriately selected according to the purpose, but the thickness can be about 5 to 154 ⁇ m, preferably about 5 to 150 ⁇ m.
- the thickness of the polyimide layer (b) as the substrate and the thickness of 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 150 ⁇ m, more preferably 8 to 120 ⁇ m, more preferably 10 to 100 ⁇ m, and particularly preferably 20 to 50 ⁇ m.
- the thickness of one side of the polyimide layer (a) may be such that the adhesion on the film surface does not have anisotropy or decreases, 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 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.
- a heat resistant film can be obtained by setting the range of Even if it carries out chip mounting by this, the polyimide film which a metal wiring does not generate
- the polyimide film can be produced by chemical imidization or a method using thermal imidization and chemical imidization in combination, in addition to thermal imidization.
- the synthesis of the polyimide precursor can be carried out by a known method, for example, by random polymerization or block polymerization of an acid component such as about equimolar aromatic tetracarboxylic acid dianhydride and a diamine component in an organic solvent Is achieved by 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 producing a self-supporting film as it is or, if necessary, removing or adding a solvent.
- a polyimide precursor solution (b) it can be cast on a support, a self-supporting film can be peeled off from the support, and then a self-supporting film can be formed which can be stretched in at least one direction.
- the type of polymer, degree of polymerization, concentration, etc., and the type, concentration, etc. of various additives to be added to the solution as required can be appropriately selected and used.
- the production of the polyimide solution can be carried out by a known method.
- a known polymerization solvent can be used as an organic polar solvent for producing a polyimide precursor solution or a polyimide solution, for example, N-methyl-2-pyrrolidone, N, N-dimethylacetamide, N, N-diethyl Amides such as acetamide, N, N-dimethylformamide, N, N-diethylformamide, hexamethylsulphonamide, sulfoxides such as dimethylsulfoxide and diethylsulfoxide, and sulfones such as dimethylsulfone and diethylsulfone These solvents may be used alone or in combination.
- An imidation catalyst, an organic phosphorus-containing compound, fine particles such as inorganic fine particles and organic fine particles, and a dehydrating agent may be added to the polyimide precursor solution, as necessary.
- fine particles such as organic phosphorus-containing compounds, inorganic fine particles and organic fine particles may be added to the polyimide solution.
- the polyimide solution (b) and the polyimide precursor solution (b) used as the substrate preferably have a concentration of all monomers in the organic polar solvent of 5 to 40% by mass, more preferably 6 to 35% by mass, particularly preferably
- the polyimide precursor solution (a) and the polyimide solution (a) used for the surface layer preferably have a concentration of all monomers in the organic polar solvent of 1 to 15% by mass, particularly 2 to 8%. % Is preferred.
- the polyimide solution (a) and the polyimide precursor solution (a) can be used 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 aromatic tetracarboxylic acid dianhydride described above and the aromatic diamine component may be, for example, substantially equimolar or either of The reaction is carried out by mixing the acid component or the diamine component in a slight excess and reacting 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 (cast, extrusion, etc.) to be used or the purpose to be produced, and was measured at 30.degree.
- the rotational viscosity is preferably about 100 to 10000 poise, preferably 400 to 5000 poise, more preferably 1000 to 3000 poise. Therefore, it is desirable to carry out the aforementioned polymerization reaction to the extent of the solution viscosity used.
- the solution viscosity may be appropriately selected according to the purpose (cast, extrusion, etc.) to be used or the purpose to be produced, and was measured at 30.degree.
- the rotational viscosity is preferably about 0.1 to 5000 poise, particularly about 0.5 to 2000 poise, and more preferably about 1 to 2000 poise. Therefore, it is desirable to carry out the aforementioned polymerization reaction to the extent of the solution viscosity used.
- a substituted or unsubstituted nitrogen-containing heterocyclic compound As the imidation catalyst, 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 complex Cyclic compounds, in particular, lower ones such as 1,2-dimethylimidazole, N-methylimidazole, N-benzyl-2-methylimidazole, 2-methylimidazole, 2-ethyl-4-methylimidazole, 5-methylbenzimidazole Alkylimidazole, benzimidazole such as N-benzyl-2-methylimidazole, isoquinoline, 3,5-dimethylpyridine, 3,4-dimethylpyridine, 2,5-dimethylpyridine, 2,4-dimethylpyridine, 4-n- Substituted pyridine such as propylpyridine It can be used to apply
- the amount of the imidization catalyst used is preferably about 0.01 to 2 equivalents, and more preferably 0.02 to 1 equivalents, with respect to the amic acid unit of the polyamic acid.
- Use of the imidization catalyst may improve the physical properties of the resulting polyimide film, in particular, the elongation and tear resistance.
- organic phosphorus-containing compound examples include monocaproyl phosphate, monooctyl phosphate, monolauryl phosphate, monomyristyl phosphate, monocetyl phosphate, monostearyl phosphate, triethylene glycol monotridecyl Monophosphates of ether, monophosphates of tetraethylene glycol monolauryl ether, monophosphates of diethylene glycol monostearyl ether, dicaproyl phosphate, dioctyl phosphate, dicapryl phosphate, dilauryl phosphate, dimyristyl phosphate, Disetyl phosphate, distearyl phosphate, diphosphate 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 monoste
- ammonia monomethylamine, monoethylamine, monopropylamine, monobutylamine, dimethylamine, diethylamine, dipropylamine, dibutylamine, dibutylamine, trimethylamine, triethylamine, tripropylamine, tributylamine, tributylamine, monoethanolamine, diethanolamine, triethanolamine An amine etc. are mentioned.
- Examples of the fine particles include organic fine particles and inorganic fine particles.
- organic fine particles examples include fine particles of organic substances which do not dissolve in a polyimide solution or a polyimide precursor solution, and fine particles of polymer compounds such as polyimide fine particles and aramid fine particles, and fine particles of crosslinked resin such as epoxy resin. It can.
- inorganic fine particles fine particles of titanium dioxide powder, silicon dioxide (silica) powder, magnesium oxide powder, aluminum oxide (alumina) powder, inorganic oxide powders such as zinc oxide powder, fine particles of silicon nitride powder, titanium nitride powder And inorganic carbide powder such as silicon carbide powder, and inorganic salt powder such as fine particle calcium carbonate powder, calcium sulfate powder and barium sulfate powder.
- inorganic fine particles fine particles of titanium dioxide powder, silicon dioxide (silica) powder, magnesium oxide powder, aluminum oxide (alumina) powder, inorganic oxide powders such as zinc oxide powder, fine particles of silicon nitride powder, titanium nitride powder And inorganic carbide powder such as silicon carbide powder, and inorganic salt powder such as fine particle calcium carbonate powder, calcium sulfate powder and barium sulfate powder.
- the polyimide film of the present invention is surface-treated by corona discharge treatment, low temperature plasma discharge treatment, atmospheric pressure plasma discharge treatment, chemical etching or the like as it is or if necessary, the polyimide layer (a) or the polyimide layer (b). Can be used.
- the polyimide film of the present invention is excellent in adhesiveness, and can obtain a polyimide film with an adhesive, a photosensitive material, a thermocompression-bonding material, and the like.
- the polyimide film of the present invention is excellent in adhesiveness, sputtering property and metal deposition property, and a metal foil such as copper foil is adhered using an adhesive, or a copper layer is formed by a metallizing method such as sputtering or metal deposition.
- a metal layer such as, it is possible to obtain a metal-laminated polyimide film such as copper having excellent adhesion and sufficient peel strength.
- a metal foil laminated polyimide film can be obtained by laminating a metal foil such as a copper foil on the polyimide film obtained according to the present invention using a thermocompression bonding polymer such as a thermocompression bonding polyimide.
- the lamination of the metal layers can be carried out according to known methods.
- the kind and thickness of metal may be appropriately selected depending on the application to be used, and for example, rolled copper foil, electrolytic copper foil, copper alloy foil, aluminum foil, stainless steel foil Titanium foil, iron foil, nickel foil and the like, and the thickness thereof is preferably about 1 ⁇ m to 50 ⁇ m, and more preferably about 2 to 20 ⁇ m.
- the foil having a thickness of about 5 ⁇ m or less is preferably used as a foil with a carrier.
- the polyimide film of the present invention and other resin films, metals such as copper, or chip members such as IC chips can be bonded together using an adhesive.
- a known adhesive can be used according to the application, such as an adhesive excellent in insulation and adhesion reliability, an adhesive excellent in conductivity and adhesion reliability by pressure bonding such as ACF, etc., and a thermoplastic adhesive Agents and thermosetting adhesives.
- the adhesive examples include adhesives of polyimide type, polyamide type, polyimide amide type, acrylic type, epoxy type, urethane type and the like, and adhesives containing two or more of these, and in particular, acrylic type and epoxy type. It is preferable to use a urethane-based or polyimide-based adhesive.
- the metallization method is a method of providing a metal layer different from metal plating or lamination of metal foil, and known methods such as vacuum evaporation, sputtering, ion plating, electron beam and the like can be used.
- Metals used for the metallizing method include metals such as copper, nickel, chromium, manganese, aluminum, iron, molybdenum, cobalt, tungsten, vanadium, titanium, tantalum, or alloys of these metals, or oxides or metals of these metals. Although metal compounds, such as carbides, etc. can be used, it is not particularly limited to these materials.
- the thickness of the metal layer formed by the metallization method can be appropriately selected according to the purpose of use, and is preferably in the range of 1 to 500 nm, more preferably 5 to 200 nm, because it is practically suitable.
- the number of metal layers formed by the metallizing method can be appropriately selected according to the purpose of use, and may be one, two, or three or more layers.
- the metal laminated polyimide film obtained by the metallizing method can provide metal plating layers, such as copper and tin, on the surface of a metal layer by well-known wet plating methods, such as electrolytic plating or electroless plating.
- the 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 90 ° peel strength is 0.3 N / mm or more, further 0.4 N / mm or more, particularly 0.5 N / mm.
- the copper laminated polyimide film which is the above can be obtained.
- the polyimide film of the present invention is an insulating substrate material such as FPC, TAB, COF or metal wiring substrate, cover substrate such as metal wiring, chip member such as IC chip, liquid crystal display, organic electroluminescence display, electronic paper, solar It can be suitably used as a base material for batteries and the like.
- the polyimide metal laminate of the present invention can be manufactured by removing a part of the metal layer on one side or both sides of the film by a known method such as etching to produce a wiring member having a metal wiring formed on the film upper part.
- the wiring member be formed in a direction perpendicular to the extending direction, in which most of the metal wiring or the connection portion with the IC chip or the vicinity thereof is formed in order to improve the accuracy with respect to thermal expansion.
- the wiring member can be used by mounting or connecting at least one or more chip members such as IC chips.
- the wiring member can be used by laminating members that cover other wires.
- chip members such as IC chips may include known chip members such as semiconductor chips such as silicon chips, and semiconductor chips having various functions for driving liquid crystal displays, systems, memories, etc. I can do it.
- the polyimide film of the present invention can be mounted with a resistor, a capacitor, etc. in addition to the metal layer.
- a polyimide metal laminate produced using a polyimide film having a smaller linear expansion coefficient in the width direction than the linear expansion coefficient in the length direction manufactured by the manufacturing method of the present invention has a wiring having metal wiring at least in the length direction. It is preferably used for a member.
- a metal layer is formed, a part of the metal layer is removed, and the length is mainly
- a metal wiring can be formed in a direction to manufacture a wiring member, which is particularly excellent when used for connection with 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 method.
- IR-ATR is measured using ZnSe using FT / IR-4100 manufactured by Jasco, and the peak at 1560.13 cm -1 to 1432.85 cm -1 The area was X1, and the peak area of 1798.30 cm -1 to 1747.19 cm -1 was X2.
- the imidization ratio of the self-supporting film according to the following formula (2) was calculated. In the measurement, both sides of the film were measured, and the average of both sides was taken as the imidation ratio. (The peak area was determined using software built into the device.)
- the completely imidized film is one heated at 480 ° C. for 5 minutes. In the film, the cast support side is A-face, and the gas side is B-face.
- the peak area of 1560.13 cm -1 to 1432.85 cm -1 is X1
- the peak area of 1798.30 cm -1 to 1747.19 cm -1 is X2
- the area ratio (X1 / X2) of the side A of the self-supporting film is a1
- the area ratio (X1 / X2) of the side B of the self-supporting film is b1
- the area ratio (X1 / X2) of the A side of the film completely imidized is a2
- Let the area ratio (X1 / X2) on the B surface side of the film completely imidized be b2.
- Linear expansion coefficient measurement method (linear expansion coefficient in the width direction): Average linear expansion at 50 ° C. to 200 ° C. when heated at a rate of 20 ° C./min using TMA / SS 6100 manufactured by Seiko Instruments Inc. The coefficients were measured.
- Peel strength (90 ° peel strength): 2 to 10 mm wide sample in an air conditioned environment at a temperature of 23 ° C. according to the method A described in the peel strength of copper foil according to JIS ⁇ C6471. It measured using the piece.
- Example 1 (Production of stretched polyimide film)
- the polyimide precursor solution (X) of Reference Example 1 obtained as a dope for a base film is continuously cast on a stainless steel substrate (support) so that the film thickness after drying by heating is 35 ⁇ m, and 140 ° C.
- the film was dried by hot air and peeled off from the support to obtain a self-supporting film.
- the surface of the self-indicating film in contact with the support was coated with the polyimide precursor solution (Y) of Reference Example 2 using a die coater such that the thickness after drying was 0.5 ⁇ m, and after coating
- the self-supporting film is heated in a heating furnace, the temperature is gradually raised from 200 ° C. to 575 ° C.
- the self-supporting film contained 32% by mass of the solvent, and the imidation ratio was 25%.
- Example 1 In the same manner as in Example 1 using the obtained stretched polyimide film, a copper-plated laminated polyimide film in which a copper plating layer was formed on the film surface was obtained.
- the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured in the same manner as in Example 1. The results are shown in Table 1.
- Reference Example 1 The polyimide precursor solution (X) of Reference Example 1 obtained as a dope for a base film is continuously cast on a stainless steel substrate (support) so that the film thickness after drying by heating is 35 ⁇ m, and 140 ° C. The film was dried by hot air and peeled off from the support to obtain a self-supporting film. On the surface of this self-indicating film in contact with the support, an amount of 7 g / m 2 of N, N-dimethylacetamide containing 3% by mass of ⁇ -phenylaminopropyltrimethoxysilane not containing a polyimide precursor is die-coated Was coated and dried, and the self-supporting film after coating was gradually heated from 200 ° C.
- the unstretched polyimide film was manufactured continuously.
- a copper-plated laminated polyimide film having a copper plating layer formed on the film surface was obtained in the same manner as in Example 1 using the obtained unstretched polyimide film.
- the adhesion strength (90 ° peel strength) of the copper-plated laminated polyimide film was measured in the same manner as in Example 1. The results are shown in Table 1.
- the difference in 90 ° peel strength between the MD direction and the TD direction is larger in the comparative example 1 having a larger linear expansion coefficient difference.
- Example 1 when Example 1 is compared with Comparative Example 1, Example 1 has a smaller difference in 90 ° peel strength between the MD direction and the TD direction than Comparative Example 1, and the adhesion anisotropy decreases. ing.
- Example 1 even if it did not contain a surface treating agent, the metal layer excellent in adhesiveness was formed by the metallizing method.
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Abstract
Description
ポリイミド層(a)は、下記化学式(1)の構造を有する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ることを特徴とするポリイミドフィルムに関する。
好ましくは本発明の第一のポリイミドフィルムは、
(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)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ポリイミドフィルムの製造方法に関する。
(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。
1)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などのジアミノジフェニルエーテル類、
2)1,3-ビス(3-アミノフェノキシ)ベンゼン、1,4-ビス(3-アミノフェノキシ)ベンゼン、1,3-ビス(4-アミノフェノキシ)ベンゼン、1,4-ビス(4-アミノフェノキシ)ベンゼンなどのビス(アミノフェノキシ)ベンゼン類、
3)4,4’-ビス(4-アミノフェノキシ)ビフェニル、4,4’-ビス(3-アミノフェノキシ)ビフェニルなどのビス(アミノフェノキシ)ビフェニル類、
4)4,4’-ビス(4-アミノフェノキシ)ジフェニルメタン、4,4’-ビス(3-アミノフェノキシ)ジフェニルメタンなどのビス(アミノフェノキシ)ジフェニルメタン類、
5)4,4’-ビス(4-アミノフェノキシ)ジフェニルプロパン、4,4’-ビス(3-アミノフェノキシ)ジフェニルプロパンなどのビス(アミノフェノキシ)ジフェニルプロパン類、
を挙げることができ、これらは単独でも、又は2種以上でも用いることができる。
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。
1)単独のポリイミドフィルムの場合に、ガラス転移温度が200℃以上、さらに好ましくは300℃以上か、確認不可能であるもの、
2)特に線膨張係数(50~200℃)(MD)が5×10-6~20×10-6cm/cm/℃であるもの、
3)引張弾性率(MD、ASTM-D882)が300kg/mm2以上であるもの、
4)非熱可塑性ポリイミド、
などの特徴を挙げることができる。
(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、好ましくはこれらの酸成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含む酸成分と、
(2)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、m-トリジン及び4,4’-ジアミノベンズアニリドより選ばれる成分を少なくとも1種含むジアミン成分、好ましくはこれらのジアミン成分を少なくとも70モル%以上、さらに好ましくは80モル%以上、より好ましくは90モル%以上含むジアミン成分とから得られるポリイミドなどを用いることができる。
1)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物と、p-フェニレンジアミン或いは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、
2)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と、p-フェニレンジアミン或いは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、
3)ピロメリット酸二無水物と、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、
4)3,3’,4,4’-ビフェニルテトラカルボン酸二無水物とp-フェニレンジアミンとを主成分(合計100モル%中の50モル%以上)として得られるものが、プリント配線板、フレキシブルプリント基板、TABテープ等の電子部品の素材として好適に用いられ、広い温度範囲にわたって優れた機械的特性を有し、長期耐熱性を有し、耐加水分解性に優れ、熱分解開始温度が高く、加熱収縮率と線膨張係数が小さく、難燃性に優れるために好ましい。
2,3,3’,4’-ビフェニルテトラカルボン酸二無水物、3,3’,4,4’-ベンゾフェノンテトラカルボン酸二無水物、ビス(3,4-ジカルボキシフェニル)エーテル二無水物、ビス(3,4-ジカルボキシフェニル)スルフィド二無水物、ビス(3,4-ジカルボキシフェニル)スルホン二無水物、ビス(3,4-ジカルボキシフェニル)メタン二無水物、2,2-ビス(3,4-ジカルボキシフェニル)プロパン二無水物、2,2-ビス(3,4-ジカルボキシフェニル)-1,1,1,3,3,3-ヘキサフルオロプロパン二無水物、2,2-ビス[(3,4-ジカルボキシフェノキシ)フェニル]プロパン二無水物、などの酸二無水物成分を用いることができる。
m-フェニレンジアミン、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スルフィド、3,4’-ジアミノジフェニルスルフィド、4,4’-ジアミノジフェニルスルフィド、3,3’-ジアミノジフェニルスルホン、3,4’-ジアミノジフェニルスルホン、4,4’-ジアミノジフェニルスルホン、3,3’-ジアミノベンゾフェノン、4,4’-ジアミノベンゾフェノン、3,4’-ジアミノベンゾフェノン、3,3’-ジアミノジフェニルメタン、4,4’-ジアミノジフェニルメタン、3,4’-ジアミノジフェニルメタン、2,2-ジ(3-アミノフェニル)プロパン、2,2-ジ(4-アミノフェニル)プロパン、などのジアミン成分を用いることができる。
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)が得られるポリイミド溶液(a)または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、加熱してイミド化する第二工程を含む方法、
又は、
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)が得られるポリイミド溶液(a)または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、加熱して必要ならイミド化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する、
などを挙げることができる。
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。
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)を添加した後、均一に混合して、ポリイミド前駆体溶液(Y)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(Y)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。
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(Y)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。
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。
Claims (10)
- ポリイミド層(a)は、さらに酸成分を含み、ピロメリット酸二無水物及び3,3’,4,4’-ビフェニルテトラカルボン酸二無水物より選ばれる少なくとも1種を酸成分100モル%中50~100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に記載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または請求項2に記載のポリイミドフィルム。 - ポリイミド層(a)は、化学式(1)の構造を有する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1~3のいずれか1項に記載のポリイミドフィルム。
- 化学式(1)の構造を有するジアミンは、ジアミノジフェニルエーテル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1~5のいずれか1項に記載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1~6のいずれか1項に記載のポリイミドフィルム。
- ポリイミド層(a)の表面に、直接または接着剤層を介して金属層を積層して用いることを特徴とする請求項1~7のいずれか1項に記載のポリイミドフィルム。
- 請求項1~8のいずれか1項に記載のポリイミドフィルムのポリイミド層(a)の表面に、直接または接着剤層を介して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1~8のいずれか1項に記載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)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ポリイミドフィルムの製造方法。
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US13/264,492 US20120034455A1 (en) | 2009-04-14 | 2010-04-14 | Polyimide film, method for producing the same, and metal-laminated polyimide film |
JP2011509324A JP5621767B2 (ja) | 2009-04-14 | 2010-04-14 | 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 |
CN201080026427.9A CN102458849B (zh) | 2009-04-14 | 2010-04-14 | 聚酰亚胺膜、它们的制造方法和金属层叠聚酰亚胺膜 |
KR1020117026697A KR101733254B1 (ko) | 2009-04-14 | 2010-04-14 | 폴리이미드 필름, 이의 제조 방법, 및 금속 적층 폴리이미드 필름 |
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US7128843B2 (en) * | 2003-04-04 | 2006-10-31 | Hrl Laboratories, Llc | Process for fabricating monolithic membrane substrate structures with well-controlled air gaps |
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CN104151822A (zh) * | 2013-05-14 | 2014-11-19 | 昆山杉木电子科技有限公司 | 一种聚酰亚胺薄膜的制备方法 |
JP6411478B2 (ja) * | 2014-05-12 | 2018-10-24 | 株式会社Screenホールディングス | ポリイミドフィルムの製造方法、電子機器の製造方法および塗膜の剥離方法 |
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