WO2008072495A1 - ポリアミドイミド樹脂、それから得られる無色透明フレキシブル金属張積層体および配線板 - Google Patents
ポリアミドイミド樹脂、それから得られる無色透明フレキシブル金属張積層体および配線板 Download PDFInfo
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- WO2008072495A1 WO2008072495A1 PCT/JP2007/073292 JP2007073292W WO2008072495A1 WO 2008072495 A1 WO2008072495 A1 WO 2008072495A1 JP 2007073292 W JP2007073292 W JP 2007073292W WO 2008072495 A1 WO2008072495 A1 WO 2008072495A1
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- polyamide
- general formula
- colorless
- film
- flexible metal
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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
- 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
- B32B15/04—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
- B32B15/088—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 polyamides
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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
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/14—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
- B32B5/147—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces by treatment of the 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/14—Polyamide-imides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of 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 C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
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- 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
- B32B2255/06—Coating on the layer surface on metal 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
- B32B2255/10—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
- B32B2255/26—Polymeric 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
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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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
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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
- B32B2307/54—Yield strength; Tensile strength
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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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
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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
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
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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
- H05K1/0393—Flexible materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0108—Transparent
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0154—Polyimide
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0335—Layered conductors or foils
- H05K2201/0355—Metal foils
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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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/06—Lamination
- H05K2203/065—Binding insulating layers without adhesive, e.g. by local heating or welding, before lamination of the whole PCB
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Definitions
- the present invention relates to a polyamide-imide resin, a flexible metal-clad laminate having excellent heat resistance, flexibility and sufficient colorless transparency, and a colorless and transparent flexible printed wiring board using the same.
- a flexible metal laminate used as a material for a flexible printed circuit board a three-layer flexible metal-clad laminate composed of a wholly aromatic polyimide film / adhesive / copper foil is generally known, and is used for general purposes. It is mainly used.
- a two-layer flexible metal-clad laminate composed only of polyimide and copper foil without using an adhesive is also known, which is called a metalizing type in which copper is directly formed on a polyimide film by plating.
- Known as a casting type where polyimide varnish is applied to copper foil, or a laminate type where thermoplastic polyimide and copper foil are bonded together by thermal deposition it is known for electronic devices that require flexibility and small space.
- it is widely used for parts for example, device mounting boards for display devices such as liquid crystal displays and plasma displays, inter-board relay cables for mobile phones and digital cameras and portable game machines, and operation switch board.
- the flexible printed circuit board and the flexible metal laminate that is a material of the flexible printed circuit board need to be colorless and transparent like glass.
- Commercially available wholly aromatic polyimides (Avical, etc. manufactured by Kanechi Co., Ltd.) used in flexible printed wiring boards and flexible metal laminates, are charge transfer complexes within and between molecules. Transparent to yellowish brown color due to the formation of It is difficult to apply to applications that require colorless transparency such as a film substrate.
- Patent Document 1 includes an aromatic dianhydride such as pyromellitic dianhydride and 3,3 ′, 4,4 ′ biphenyltetracarboxylic dianhydride and trans 1,4 diaminocyclohexane.
- aromatic dianhydride such as pyromellitic dianhydride and 3,3 ′, 4,4 ′ biphenyltetracarboxylic dianhydride and trans 1,4 diaminocyclohexane.
- a polyimide obtained by imidizing a formed polyimide precursor (polyamic acid) has been proposed.
- the polyimide exhibits high heat resistance and high transparency, but has a problem that it has low flexibility and lack of flexibility due to high rigidity and linearity of the main chain skeleton of the polyimide.
- Patent Document 2 a highly flexible alicyclic diamine such as 4,4'-methylenebis (cyclohexylamine) and 3,3 ', 4,4' monobenzophenonetetracarboxylic dianhydride.
- a colorless and transparent copolymer polyimide formed from a specific aromatic acid dianhydride such as 3,3 ′, 4,4 ′ diphenylsulfonetetracarboxylic dianhydride has been proposed.
- the obtained polyimide has a glass transition temperature of! /, And the deviation is less than 270 ° C, and it is difficult to say that the heat resistance is sufficiently satisfied.
- the coefficient of thermal expansion is high.
- the proposed polyimide must be heat-treated at a high temperature after molding (after coating) in the form of polyamic acid, which is a poorly soluble precursor.
- productivity has been reduced, and expensive equipment is required, resulting in high manufacturing costs.
- Patent Document 1 JP 2002-161136 A
- Patent Document 2 Japanese Patent Laid-Open No. 7-10993
- the present invention has been made against the background of power and the problems of the prior art. That is, the present invention can inexpensively produce a flexible metal-clad laminate having excellent heat resistance, flexibility, low thermal expansion, and sufficient colorless transparency, and a flexible printed wiring board using the same. Is an issue. Means for solving the problem
- this invention consists of the following structures.
- Polyamideimide resin characterized by being not less than / g and not more than 2.5 dl / g.
- the polyamideimide resin according to (1) which has an alicyclic structure containing a structure represented by the following general formula (2) and has a logarithmic viscosity of 0.8 dl / g or more and 2.5 dl / g or less.
- Rl and R2 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- the ratio of the unit represented by the following general formula (3) and the general formula (4) to the unit represented by the general formula (3) / the unit represented by the general formula (4) is 99 ⁇ 9 /
- the polyamideimide resin according to (1) which has an alicyclic structure in a range of 0.;! To 50/50 and has a logarithmic viscosity of 0.8 dl / g or more and 2.5 dl / g or less.
- R3 and R4 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R5 and R6 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R7 is an alkyl group having 1 to 3 carbon atoms or an aryl group.
- X may be an ether group, a sulfone group, an alkyl group having 1 to 3 carbon atoms or an aryl group, m is an integer of 0 to 2, and n is It is an integer from 1 to 3.
- the ratio of the unit represented by the general formula (5) and the unit represented by the general formula (6) is 99 ⁇ 9/0.
- the polyamideimide resin according to (1) having an alicyclic structure in a range of! To 50/50 and a logarithmic viscosity of 0.8 dl / g or more and 2.5 dl / g or less.
- R8 and R9 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R10 and R11 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- the polyamideimide resin according to any one of (1) to (4) has a glass transition temperature of 250 ° C. or higher and the polyamideimide resin is molded into a dry film thickness of 12.5 ⁇
- the colorless and transparent flexible printed wiring board according to (8) which is prepared from the alicyclic group-containing polyamideimide resin according to any one of (1) to (5) as a coverlay material.
- the colorless and transparent flexible printed wiring board according to (8) prepared using the colorless and transparent polyamide-imide film described in (6) as a coverlay film.
- the flexible metal-clad laminate of the present invention and the flexible printed wiring board using the same can have excellent heat resistance, flexibility, low thermal expansion, and sufficient colorless transparency. Therefore, it can be used in a wide range of fields for electronic devices. It is particularly suitable as a transparent film substrate used for liquid crystal displays and the like, and contributes greatly to the industrial world. BEST MODE FOR CARRYING OUT THE INVENTION
- the polyamide-imide resin used in the production of the flexible metal-clad laminate and the flexible printed board of the present invention needs to have cyclohexane tricarboxylic acid anhydride as a main component as an acid component.
- the use of an acid component mainly composed of another aromatic acid dianhydride component has the desired heat resistance, flexibility, low thermal expansion property, and flexible metal tension that has sufficient colorless transparency. It is difficult to obtain a laminate and a flexible printed circuit board!
- polyamideimide resin composed of repeating units of the following general formula (1).
- the polyamideimide resin can be obtained by condensation reaction of cyclohexanetricarboxylic acid anhydride or its chloride with amine components such as diamine and diisocyanate as an acid component.
- the cyclohexanetricarboxylic acid anhydride may contain an aliphatic hydrocarbon substituent such as a methyl group or an ethyl group, or a halogenous substituent such as chlorine or fluorine.
- the acid component of the polyamideimide resin is an alicyclic cyclohexanetricarboxylic acid anhydride
- colorless transparency can be exhibited, and the amine component can be freely selected. This has the great advantage that the range of molecular design for obtaining the desired resin properties can be expanded, compared to the case where the resin transparency is exhibited using an alicyclic amine component.
- amine component if 0-tolidine isocyanate or naphthalene diisocyanate is selected as the amine component, a polyamide-imide resin that is colorless and transparent and excellent in heat resistance and low thermal expansion can be obtained.
- an alicyclic cyclohexane is used as the acid component as in the present invention, rather than selecting an alicyclic type as the amine component and an aromatic type as the acid component to exhibit the transparency of the resin. Selecting tricarboxylic acid has the advantage that the degree of polymerization of polyamideimide is likely to increase.
- Examples of the amine component used in the present invention include 2,2,1bis (trifluoromethinole) benzidine, p-phenylenediamine, m-phenylenediamine, 2,4-diaminotonole. 2,5 diaminotonolene, 2,4 diaminoxylene, 2,4-diaminodurene, 4,4, diaminodiphenylmethane, 4,4, -methylenebis (2 methylaniline), 4 4,4, -methylenebis (2,6 dimethylaniline), 4,4'-methylenebis (2,6 dimethylaniline), 3,4'-diaminodiphenyl ether, 3, 3 ,
- 1,4 naphthalenediamine, 1,5-naphthalenediamine, 2,6-naphthalenediamine, 2,7— are particularly preferred amine components from the viewpoint of improving heat resistance and low thermal expansion.
- It is an amin component having a naphthalene skeleton such as naphthalenediamine, more preferably 3, 3 'dimethyl-4,4'-diaminobiphenyl, 3,3' dimethyl-4, 4'-diaminobiphenyl, 2, 2, 1-dimethyl-4,4'-diaminobiphenyl, 2, 2, 1-jetyl-4 , 4'-diaminobiphenyl, 3,3,1-dimethoxy-1,4'-diaminobiphenyl, 3,3, -diethoxy-4,4'-diaminobiphenyl, etc.
- Rl and R2 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- a more preferred embodiment includes the following general formula (3) and general formula (4) as structural units, and the molar ratio of the structural units of general formula (3) and general formula (4).
- Equation (3) / Equation (4) 99.
- R3 and R4 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R5 and R6 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R7 is an alkyl group having 1 to 3 carbon atoms or an aryl group.
- X may be an ether group, a sulfone group, an alkyl group having 1 to 3 carbon atoms or an aryl group, m is an integer of 0 to 2, and n is It is an integer from 1 to 3.
- the unit of the general formula (4) is obtained by copolymerizing a dicarboxylic acid component such as isophthalic acid, terephthalic acid, biphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, diphenyl sulfone dicarboxylic acid as the acid component.
- a dicarboxylic acid component such as isophthalic acid, terephthalic acid, biphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, diphenyl sulfone dicarboxylic acid as the acid component.
- a dicarboxylic acid component such as isophthalic acid, terephthalic acid, biphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, diphenyl sulfone dicarboxylic acid as the acid component.
- Preferred are terephthalic acid and biphenyl dicarboxylic acid.
- R8 and R9 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- R10 and R11 are each hydrogen, an alkyl group having 1 to 3 carbon atoms, or an aryl group, and may contain nitrogen, oxygen, sulfur, or halogen.
- the unit of the general formula)) is obtained by the force S obtained by copolymerizing a trimellitic anhydride component as an acid component.
- the polyamide-imide resin of the present invention can be synthesized by an ordinary method, for example, isocyanate method, acid chloride method, low temperature solution polymerization method, room temperature solution polymerization method, etc.
- the preferred production method is an isocyanate method in which a polymer is obtained by a decarboxylation reaction.
- Solvents for producing a solution of the polyamideimide resin used in the present invention include, for example, N methyl 2-pyrrolidone, N, N, monodimethylformamide, N, N, monodimethylacetamide, 1, 3 dimethyl-2. Imidazolidinone, tetramethylurea, sulfolane, dimethyl Rulsulfoxide, ⁇ -butyral rataton, cyclohexanone, cyclopentanone, etc., preferably N-methyl-2-pyrrolidone. When these solvents are used as polymerization solvents, they can be used as they are as solutions for producing the flexible metal-clad laminate described later.
- hydrocarbon organic solvents such as toluene and xylene
- ether organic solvents such as diglyme, triglyme and tetrahydrofuran
- ketone organic solvents such as methyl ethyl ketone and methyl isobutyl ketone.
- the molecular weight of the polyamide-imide resin used in the present invention is from 0.8 to 2.5 dl / g in N-methyl-2-pyrrolidone (polymer concentration 0.5 g / dl) at a logarithmic viscosity at 30 ° C. Those having a molecular weight corresponding to are more preferred, those having a molecular weight corresponding to 0.9 to 2.3 dl / g, more preferably 1.0 force, etc. 2. equivalent to Odl / g. It has a molecular weight. If the logarithmic viscosity is less than 0.8 dl / g, the mechanical properties may be insufficient. If the logarithmic viscosity exceeds 2.5 dl / g, the solution viscosity becomes high, so that the forming process into a flexible metal-clad laminate is not possible. Since it may become difficult, it is not preferable.
- the logarithmic viscosity is controlled by adjusting the molar ratio of the acid component to the amine component. For example, it can be achieved by appropriately adjusting the molar ratio of the acid component and the amine component in consideration of the reaction between the isocyanate and the solvent.
- lubricants silicone, talc, silicone, etc.
- adhesion promoters flame retardants (phosphorus, triazine, aluminum hydroxide, etc.), stabilizers (antioxidants, UV absorbers, polymerization inhibitors, etc.), MMA activity Agents, organic and inorganic fillers (talc, titanium oxide, fluoropolymer fine particles, pigments, dyes, calcium carbide, etc.), silicone compounds, fluorine compounds, isocyanate compounds, block isocyanate compounds, acrylic resins, Resins such as urethane resin, polyester resin, polyamide resin, epoxy resin, phenol resin, and organic compounds, or these curing agents, inorganic compounds such as silicon oxide, titanium oxide, calcium carbonate, and iron oxide are used in the present invention. Range that does not interfere with the purpose Can be used together.
- the cyclohexanetricarboxylic acid anhydride used in the present invention includes cis isomers, trans isomers, axial isomers, and equatorial isomers, which can be separated and purified according to known methods such as distillation and recrystallization. These mixing ratios are not particularly limited.
- cyclohexanetricarboxylic dianhydride is essential, but other acid components can be used in combination as long as the effects of the present invention are not impaired.
- 2,2'-bis (trifnoreolomethyl) benzidine p-phenylenediamine, m-phenylenediamine, 2,4 diaminotonolene, 2,5 diaminotonolene, 2,4 diaminoxylene 2,4 diaminodurene, 4,4'-diaminodiphenylmethane, 4,4, -methylenebis (2 methylaniline), 4,4, -methylenebis (2 ethylenaniline), 4,4'-methylenebis (2,6 dimethylaniline), 4 , 4'-methylenebis (2, 6-jetylaniline), 3, 4'-diaminodiphenyl ether, 3, 3'-diaminodiphenylenoate, 2,4, -diaminodiphenolatenore, 4, 4, diamino Dipheninoles Norehon, 3, 3'-Diaminodiphenylsulfone, 4, 4'-Diaminobenzophen
- the flexible metal-clad laminate of the present invention is obtained by applying the polyamideimide solution obtained by the above polymerization directly on a metal foil, drying and curing, and using the polyamideimide solution. First, a film is produced and then laminated with a metal foil via an adhesive.
- a conventionally known method can be used without any particular limitation. For example, a polyamideimide solution coated on a metal foil with a desired thickness is dried at a temperature of 40 ° C to 180 ° C, and then in an atmosphere of an inert gas such as nitrogen or in a vacuum.
- the flexible metal-clad laminate of the present invention can be obtained by heat treatment at a temperature of 200 ° C. to 400 ° C.
- the two non-metallic foil sides of the two flexible printed boards obtained, or the non-metallic foil side of the obtained flexible printed board and the copper foil are bonded together using an adhesive, and a double-sided type flexible printed board is obtained.
- the method for obtaining a metal-clad laminate by first producing a film using a polyamideimide solution and laminating it with a metal foil via an adhesive is not particularly limited. Can be used.
- the polyamide-imide solution is applied on a support such as an endless belt, drum, carrier film, etc., and the coating film is dried at a temperature of 40 ° C. to 180 ° C. In some cases, the film is peeled off from the support.
- a polyamide-imide film is produced by treating at a temperature of 200 ° C. to 400 ° C., and the film and the metal foil are bonded to each other by a method such as heat lamination with an adhesive, whereby the metal-clad laminate of the present invention. Is obtained.
- the polyamide-imide resin used in the production of the flexible metal-clad laminate may be a polyamide-amide acid as a precursor.
- conditions such as temperature can be controlled in each of the above drying and curing steps. Can be manufactured.
- a copper foil, an aluminum foil, a steel foil, a nickel foil, and the like can be used, and a composite metal foil obtained by compounding these with other metals such as zinc and chromium compounds.
- the treated metal foil can also be used.
- the thickness of metal foil For example, 1-50 m metal foil can be used conveniently.
- a metal foil having a tensile strength of preferably 350 N / mm 2 or more, more preferably 550 N / mm 2 or more is recommended.
- the adhesive used in forming the flexible printed circuit board is not particularly limited, and acrylonitrile butadiene rubber (NBR) adhesive, polyamide adhesive, polyester adhesive, polyester urethane adhesive Can use adhesives such as adhesives, epoxy resins, acrylic resins, polyimide resins, polyamideimide resins, and polyesterimide resins. From the viewpoint of colorless transparency and flex resistance, polyester and polyester urethane resins, or The thickness of the adhesive layer preferred by the resin composition in which an epoxy resin is blended with these resins is preferably about 5 to 30 111.
- NBR acrylonitrile butadiene rubber
- the thickness of the adhesive layer that is preferred is a polyimide resin system, a polyamide-imide resin system, or a resin composition in which an epoxy resin is blended with these resins. ⁇ 111 is preferred.
- the thickness of the adhesive is not particularly limited as long as it does not hinder the performance of the flexible printed circuit board. However, if the thickness is too thin, sufficient adhesiveness may be difficult to obtain. If the thickness is too thick, processability (dryability, coatability), etc. may be reduced.
- the thickness of the polyamideimide layer can be selected from a wide range. Generally, the thickness after drying is 5 to 100 m, preferably 10 to 10 m. About 50 111. If the thickness is less than 5 m, the mechanical properties such as film strength and handling properties are inferior. On the other hand, if the thickness exceeds 100 m, the properties such as flexibility and workability (drying properties, coating properties), etc. Tends to decrease.
- the glass transition temperature of the polyamideimide layer is preferably 250 ° C or higher, more preferably 280 ° C or higher, and further preferably 300 ° C or higher. Below 250 ° C, there is a risk of malfunction due to solder heat resistance.
- the flexible metal-clad laminate of the present invention may be subjected to a surface treatment as necessary. For example, surface treatment such as hydrolysis, low-temperature plasma, physical roughening, and easy adhesion coating treatment can be performed.
- the light transmittance of the film at a wavelength of 500 nm needs to be 80% or more. More preferably, it is 85% or more, and most preferably 90% or more. If the light transmittance is 80% or less, the transparency when using this resin as a flexible printed wiring board is not sufficient, and the characteristics as a transparent substrate used in liquid crystal displays etc. are sufficiently satisfied. There is a fear that it does not come. In order to further improve the transparency of the polyamideimide resin, increasing the ratio of cyclohexanetricarboxylic anhydride relative to the total acid component is an example.
- the coefficient of thermal expansion of the polyamideimide resin used in the present invention is preferably 1 ppm or more and 40 ppm or less, more preferably 5 ppm or more and 35 ppm or less, and further preferably 10 ppm or more and 30 ppm or less. If it is less than lppm or exceeds 40ppm, there is a large difference in the coefficient of thermal expansion when combining polyamideimide resin and metal layer (for example, copper: thermal expansion coefficient 18ppm) or metal oxide layer. This is preferable because body distortion, cracking, etc. may occur.
- This coefficient of thermal expansion is achieved by appropriately selecting the structure and composition of the resin of the present invention, for example, by increasing the ratio of 0-tolidine isocyanate and naphthalenediocyanate to all amine components.
- a flexible printed wiring board having excellent heat resistance, flexibility, and sufficient colorless transparency can be obtained.
- it can manufacture using a conventionally well-known process. For example, a cover film with an adhesive is first prepared by laminating an adhesive layer on a film of polyimide or the like. On the other hand, a desired circuit is put on the metal foil surface of the flexible metal laminate of the present invention, followed by etching and washing / drying to produce a flexible metal laminate substrate subjected to circuit processing. By attaching the cover film with adhesive obtained in this way and the flexible metal laminate subjected to circuit processing, it is possible to obtain the flexible printed wiring board of the present invention.
- the film used for producing the cover film with an adhesive is not particularly limited, but is preferably an alicyclic group-containing polyimide resin film or an alicyclic group-containing polyamideimide from the viewpoint of heat resistance and colorless transparency.
- a resin film is preferably used, and more preferably a film made of a polyamiimide resin used for the flexible metal laminate of the present invention, which is excellent in heat resistance and colorless transparency flexibility.
- a method of coating the circuit surface a method of applying a liquid coating agent to a wiring board by a screen printing method can also be applied.
- a liquid coating agent a force capable of using a conventionally known epoxy-based polyimide ink is particularly preferable from the viewpoint of heat resistance and the like.
- an alicyclic group-containing polyimide is preferable from the viewpoint of heat resistance and colorless transparency.
- Resin and alicyclic group-containing polyamideimide resin are preferably used, and more preferably, a polyamideimide resin used for the flexible metal laminate of the present invention, which is excellent in heat resistance, colorless transparency and flexibility.
- the flexible printed wiring board of the present invention has a light transmittance of 50% or more at a wavelength of 500 nm in a non-circuit portion after coverlay film bonding or liquid coating application, curing / drying, and preferably 60%. % Or more, more preferably 70% or more, and most preferably 100%. If the light transmittance is less than 50%, the transparency cannot be said to be sufficient, and the characteristics as a transparent film substrate used for a liquid crystal display or the like may not be sufficiently satisfied. Increasing the light transmittance can be achieved by using a large amount of cyclohexanetricarboxylic acid anhydride as the acid component of the polyamideimide resin.
- the resin of the present invention or the film of the present invention is preferably used.
- VI represents the solution viscosity measured with an Ubbelohde type viscosity tube
- V2 represents the solvent viscosity measured with an Ubbe mouth type viscosity tube
- VI and V2 represent the polymer solution and solvent (N Methyl 2-pyrrolidone) was determined from the time it took to pass through the viscosity tube capillary
- V3 is the polymer concentration (g / dl).
- Tg TMA (Thermo-mechanical analysis / manufactured by Rigaku Corporation) 3 ⁇ 4
- the glass transition point of the resin film layer obtained by etching away the metal foil of the flexible metal-clad laminate of the present invention by the I tension load method is as follows: Measured with The film was measured in a nitrogen film at a heating rate of 10 ° C / min, once heated to the inflection point, and then cooled to room temperature. Load: 5g
- Thermal expansion coefficient TMA (Thermomechanical analysis / manufactured by Rigaku Corporation)
- the thermal expansion coefficient of the resin film layer obtained by etching away the metal foil of the flexible metal-clad laminate of the present invention by the tensile load method is as follows: Measured with The film was measured for a film that was once heated to an inflection point in nitrogen at a heating rate of 10 ° C./min and then cooled to room temperature.
- Solder heat resistance A metal foil of a flexible metal-clad laminate was etched by a subtractive method to produce a circuit pattern with a width of lmm (35% ferric chloride solution). 25 ° C, 65% After adjusting the humidity (humidity) for 24 hours and cleaning the flux, it was immersed in a 300 ° C jet solder bath for 20 seconds, and observed for abnormal appearance such as peeling and swelling.
- Adhesive strength 1? 241 (1? Ji- ⁇ [-650, 2.4.9 (A))
- the bond strength between the circuit pattern and the polyimide resin layer was measured. It was measured.
- Film strength, elongation, and elastic modulus A 10 mm wide and 100 mm long sample was made from a resin film obtained by etching away metal foil, and a tensile tester (trade name “Tensilon Tensile Tester” , Manufactured by Toyo Baldwin Co., Ltd.) at a tensile rate of 20 mm / min and a distance between chucks of 40 mm.
- a tensile tester trade name “Tensilon Tensile Tester” , Manufactured by Toyo Baldwin Co., Ltd.
- the polyamideimide solution obtained as described above was applied to an electrolytic copper foil having a thickness of 18 m (trade name “F WLj, manufactured by Furukawa Circuit Foil Co., Ltd.) using a knife coater and the thickness strength after solvent removal. Then, it was dried to a temperature of 100 ° C. for 5 minutes to obtain an initially dried flexible metal-clad laminate, and then the initially dried laminate was coated with an outer diameter of 6 inches.
- F WLj manufactured by Furukawa Circuit Foil Co., Ltd.
- the polyamideimide solution obtained as described above was applied to an electrolytic copper foil having a thickness of 18 m (trade name “F WLj, manufactured by Furukawa Circuit Foil Co., Ltd.) using a knife coater and the thickness strength after desolvation. Then, it was dried to a temperature of 100 ° C. for 5 minutes to obtain an initially dried flexible metal-clad laminate, and then the initially dried laminate was coated with an outer diameter of 6 inches.
- the polyamideimide solution obtained as described above was used as an electrolytic copper foil (trade name “F” WLj, manufactured by Furukawa Circuit Foil Co., Ltd.) was coated using a knife coater to a thickness of 5 m after desolvation. Next, it was dried at a temperature of 100 ° C. for 5 minutes to obtain an initially dried flexible metal-clad laminate.
- F electrolytic copper foil
- the dried laminate is wound around an aluminum can with an outer diameter of 6 inches so that the coated surface is on the outside, and then in an inert oven under nitrogen flow (flow rate: 20 L / min) at 200 ° C for 1 hour, 250 ° Heat treatment was performed stepwise for 1 hour at C and then for 30 minutes at 300 ° C to produce laminates, and the various properties shown in Table 1 were evaluated.
- the polyamideimide solution is coated on a 100 m thick releasable polyester film with a dry thickness of 12.5 m, dried at 100 ° C for 5 minutes, and then peeled off from the releasable polyester film. did.
- the peeled film is fixed to an iron frame, and heat-treated in stages in an inert oven under nitrogen flow (flow rate: 20 L / min) at 200 ° C for 1 hour, 250 ° C for 1 hour, and 300 ° C for 30 minutes.
- flow rate 20 L / min
- polyamideimide films were prepared, and various properties having the contents shown in Tables 1 and 2 were evaluated. The results are shown in Tables 1 and 2.
- the polyamideimide solution obtained as described above was subjected to a thickness force after desolvation using an 18-m-thick electrolytic copper foil (trade name “F WLj, manufactured by Furukawa Circuit Foil Co., Ltd.) using a knife coater. Then, it was dried to a temperature of 100 ° C. for 5 minutes to obtain an initially dried flexible metal-clad laminate, and then the initially dried laminate was coated with an outer diameter of 6 inches.
- an 18-m-thick electrolytic copper foil (trade name “F WLj, manufactured by Furukawa Circuit Foil Co., Ltd.) using a knife coater. Then, it was dried to a temperature of 100 ° C. for 5 minutes to obtain an initially dried flexible metal-clad laminate, and then the initially dried laminate was coated with an outer diameter of 6 inches.
- the peeled film is fixed to an iron frame, and heat-treated in stages in an inert oven under nitrogen flow (flow rate: 20 L / min) at 200 ° C for 1 hour, 250 ° C for 1 hour, and 300 ° C for 30 minutes.
- flow rate 20 L / min
- polyamideimide films were prepared, and various properties having the contents shown in Tables 1 and 2 were evaluated. The results are shown in Tables 1 and 2.
- Example 6 trimellitic anhydride 19.0 g (0.10 mol), O-tolidine diisocyanate 21. lg (0.08 mol), toluene diisocyanate 3 ⁇ 5 g (0.02 Except that)
- a polyamideimide resin was prepared.
- the logarithmic viscosity of the obtained polyamideimide was 1.5 dl / g.
- a flexible metal-clad laminate and a film were prepared, and various properties having the contents shown in Tables 1 and 2 were evaluated. As a result, the light transmittance was significantly reduced. The results are shown in Tables 1 and 2.
- a polyamideimide resin was prepared in the same manner as in Example 6 except that 25.lg (0.095 mol) of O-tolidine diisocyanate was used.
- the logarithmic viscosity of the resulting polyamideimide is
- Example 1 1 CHT / TMA / TODI 0.9 300 33 160 1 9 4.0 55
- a flexible metal-clad laminate manufactured in Example 2 was coated with Toyobo Co., Ltd. adhesive, KW (polyester urethane / epoxy system; Toyobo Co., Ltd. KW) with a comma coater. The coating was applied to 15 m and dried at 80 ° C for 3 minutes and 150 ° C for 3 minutes to obtain a copper-clad laminate with an adhesive.
- Toyobo Co., Ltd. adhesive KW (polyester urethane / epoxy system; Toyobo Co., Ltd. KW) with a comma coater.
- the coating was applied to 15 m and dried at 80 ° C for 3 minutes and 150 ° C for 3 minutes to obtain a copper-clad laminate with an adhesive.
- Example 9 the matte surface (treated surface) of electrolytic copper foil (FWL manufactured by Furukawa Circuit Foil Co., Ltd.) and the adhesive surface of the above copper-clad laminate with adhesive are stacked on top of each other, temperature 160 ° C, pressure 20Kgf Roll lamination was performed under the conditions of / cm2 and a passing speed of 3 m / min. Subsequently, after-curing was performed under conditions of 100 ° C. for 16 hours to obtain a double-sided flexible metal-clad laminate having no curling and good appearance. Next, various characteristics shown in Table 3 were evaluated. The results are shown in Table 3. [0070] Example 9
- a polyamideimide solution was prepared in the same manner as in Example 6 except that 7.9 g (0.04 monole) of cyclohexanetriforce norevonic anhydride and 11.5 g (0.06 mol) of trimellitic anhydride were used. The logarithmic viscosity of the obtained polyamideimide was 1.2 dl / g.
- a flexible metal-clad laminate and a film were prepared, and various characteristics shown in Tables 1 and 2 were evaluated. The results are shown in Tables 1 and 2.
- Photosensitive resist is laminated on the copper foil surface of the flexible metal-clad laminate produced in Example 9. Then, a necessary pattern (an evaluation pattern described in IPC-FC241, JIS Z 3197, or JIS C 5016) was transferred by exposure, printing, and development with a mask film. Next, using a 35% cupric chloride solution at 40 ° C., the copper foil was removed by etching, the resist used for circuit formation was removed with alkali, and circuit processing was performed on both sides of the substrate.
- a necessary pattern an evaluation pattern described in IPC-FC241, JIS Z 3197, or JIS C 5016
- an ink based on the coating agent HR15ET manufactured by Toyobo Co., Ltd. (alicyclic polyamideimide resin 10) was applied to the entire surface of both sides of the substrate by screen printing so that the film thickness would be 10 m.
- the transmittance of the non-circuit portion of the obtained flexible printed wiring board was 80%, and it was excellent and colorless and transparent.
- a flexible printed wiring board was prepared in the same manner as in Example 12 except that the cover coating ink was changed to Toyobo Co., Ltd. cover coat ink AS710 (aromatic amide-imide resin). The transmittance of the non-circuit portion of the obtained flexible printed wiring board was yellowish brown.
- the polyamide-imide film produced in Example 1 was coated with a polyester urethane adhesive (KW manufactured by Toyobo Co., Ltd.) with a comma coater so that the thickness after drying would be 15 m, and at 80 ° C. The film was dried for 3 minutes at 150 ° C for 3 minutes to obtain a film with an adhesive.
- a polyester urethane adhesive KW manufactured by Toyobo Co., Ltd.
- the adhesive film adhesive is applied on both sides of the base material of the double-sided flexible metal-clad laminate of Example 9 and on the circuit surfaces (both sides) of the substrate subjected to circuit processing in the same manner as in Example 12.
- a printed wiring board was obtained.
- the transmittance of the non-circuit portion of the obtained flexible printed wiring board was 85%, and it was excellent in colorless and transparent properties.
- Comparative Example 7 12.5 m of commercially available aromatic polyimide film (Abical NPI manufactured by Kanechi Co., Ltd.) was used in place of the polyamideimide film used in the production of the adhesive film produced in Example 13. In the same way as in 13, a flexible printed wiring board with coverlay processing on both sides was obtained. The light transmittance of the non-circuit portion of the obtained wiring board was 20%, and satisfactory colorless transparency was not obtained.
- a flexible metal-clad laminate having excellent heat resistance, flexibility, low thermal expansion, and sufficient colorless transparency and a colorless transparent flexible printed wiring board using the same can be obtained at low cost.
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Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020097013661A KR101229722B1 (ko) | 2006-12-12 | 2007-12-03 | 폴리아미드이미드 수지, 이것으로부터 얻어지는 무색 투명 플렉시블 금속 피복 적층체 및 배선판 |
EP20070832919 EP2103641B1 (en) | 2006-12-12 | 2007-12-03 | Polyamide-imide resin, colorless transparent flexible metal laminate made of the same, and wiring board |
ES07832919T ES2456691T3 (es) | 2006-12-12 | 2007-12-03 | Resina de poliamida, material laminar metálico flexible, incoloro y transparente obtenido a partir de la misma y placa de circuitos |
CN2007800455715A CN101589089B (zh) | 2006-12-12 | 2007-12-03 | 聚酰胺酰亚胺树脂、从该树脂得到的无色透明柔性贴金属层叠体及布线板 |
US12/518,302 US8222365B2 (en) | 2006-12-12 | 2007-12-03 | Polyamideimide resin, as well as a colorless and transparent flexible metal-clad laminate and circuit board obtained therefrom |
JP2008549245A JP5273545B2 (ja) | 2006-12-12 | 2007-12-03 | ポリアミドイミド樹脂、それから得られるフレキシブル金属張積層体および配線板 |
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JP2006334860 | 2006-12-12 | ||
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PCT/JP2007/073292 WO2008072495A1 (ja) | 2006-12-12 | 2007-12-03 | ポリアミドイミド樹脂、それから得られる無色透明フレキシブル金属張積層体および配線板 |
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US (1) | US8222365B2 (ja) |
EP (1) | EP2103641B1 (ja) |
JP (1) | JP5273545B2 (ja) |
KR (1) | KR101229722B1 (ja) |
CN (1) | CN101589089B (ja) |
ES (1) | ES2456691T3 (ja) |
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JP2008195828A (ja) * | 2007-02-13 | 2008-08-28 | Hitachi Chem Co Ltd | 接着剤組成物及びこれを用いた接着フィルム |
JP2010024314A (ja) * | 2008-07-17 | 2010-02-04 | Dic Corp | 熱硬化性樹脂組成物 |
JP2010053216A (ja) * | 2008-08-27 | 2010-03-11 | Dic Corp | 熱硬化性樹脂組成物 |
WO2010074014A1 (ja) * | 2008-12-25 | 2010-07-01 | Dic株式会社 | ポリイミド樹脂、硬化性ポリイミド樹脂組成物及び硬化物 |
WO2010098296A1 (ja) * | 2009-02-27 | 2010-09-02 | Dic株式会社 | ポリイミド樹脂、ポリイミド樹脂の製造方法、ポリイミド樹脂組成物及びその硬化物 |
WO2010106359A2 (en) | 2009-03-16 | 2010-09-23 | Sun Chemical B.V. | Liquid coverlays for flexible printed circuit boards |
WO2010137548A1 (ja) * | 2009-05-29 | 2010-12-02 | Dic株式会社 | 熱硬化性樹脂組成物およびその硬化物 |
JP2011011455A (ja) * | 2009-07-02 | 2011-01-20 | Toyobo Co Ltd | 積層体およびその製造方法 |
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US9125307B2 (en) | 2011-11-22 | 2015-09-01 | Panasonic Intellectual Property Management Co., Ltd. | Flexible metal-cladded base material, method for producing flexible metal-cladded base material, printed wiring board, multilayer flexible printed wiring board, and flex-rigid printed wiring board |
US9365694B2 (en) | 2012-07-27 | 2016-06-14 | Samsung Electronics Co., Ltd. | Composition including polyimide block copolymer and inorganic particles, method of preparing same, article including same, and display device including the article |
EP2690124A3 (en) * | 2012-07-27 | 2014-05-21 | Samsung Electronics Co., Ltd | Composition Comprising Polyimide Block Copolymer And Inorganic Particles, Method Of Preparing The Same, Article Including The Same, And Display Device Including The Article |
JP2014150133A (ja) * | 2013-01-31 | 2014-08-21 | Panasonic Corp | 樹脂付き金属箔、プリント配線板、及びプリント配線板の製造方法 |
JP2014205828A (ja) * | 2013-03-21 | 2014-10-30 | 東洋紡株式会社 | ポリエステルイミド樹脂フィルム、並びにこれに用いる樹脂および樹脂組成物 |
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Also Published As
Publication number | Publication date |
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TWI429686B (zh) | 2014-03-11 |
ES2456691T3 (es) | 2014-04-23 |
JPWO2008072495A1 (ja) | 2010-03-25 |
EP2103641A1 (en) | 2009-09-23 |
EP2103641B1 (en) | 2014-04-02 |
US20100018756A1 (en) | 2010-01-28 |
US8222365B2 (en) | 2012-07-17 |
KR101229722B1 (ko) | 2013-02-04 |
CN101589089A (zh) | 2009-11-25 |
CN101589089B (zh) | 2012-07-18 |
KR20090094831A (ko) | 2009-09-08 |
TW200837101A (en) | 2008-09-16 |
EP2103641A4 (en) | 2012-08-08 |
JP5273545B2 (ja) | 2013-08-28 |
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