WO2005111165A1 - 接着フィルムの製造方法 - Google Patents
接着フィルムの製造方法 Download PDFInfo
- Publication number
- WO2005111165A1 WO2005111165A1 PCT/JP2005/007970 JP2005007970W WO2005111165A1 WO 2005111165 A1 WO2005111165 A1 WO 2005111165A1 JP 2005007970 W JP2005007970 W JP 2005007970W WO 2005111165 A1 WO2005111165 A1 WO 2005111165A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- precursor
- polyamic acid
- adhesive film
- polyimide
- solution
- Prior art date
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000002243 precursor Substances 0.000 claims abstract description 75
- 229920001721 polyimide Polymers 0.000 claims abstract description 71
- 239000004642 Polyimide Substances 0.000 claims abstract description 60
- 229920006259 thermoplastic polyimide Polymers 0.000 claims abstract description 53
- 239000010410 layer Substances 0.000 claims abstract description 44
- 239000000126 substance Substances 0.000 claims abstract description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- 239000012024 dehydrating agents Substances 0.000 claims abstract description 29
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 229920005575 poly(amic acid) Polymers 0.000 claims description 83
- 238000000034 method Methods 0.000 claims description 54
- 239000002253 acid Substances 0.000 claims description 24
- 238000001125 extrusion Methods 0.000 claims description 12
- 150000001408 amides Chemical class 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 9
- 238000007796 conventional method Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 43
- 230000015572 biosynthetic process Effects 0.000 description 38
- 238000003786 synthesis reaction Methods 0.000 description 34
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 30
- 239000010408 film Substances 0.000 description 29
- -1 aromatic diamine disulfide Chemical class 0.000 description 18
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- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 14
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 12
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N furo[3,4-f][2]benzofuran-1,3,5,7-tetrone Chemical compound C1=C2C(=O)OC(=O)C2=CC2=C1C(=O)OC2=O ANSXAPJVJOKRDJ-UHFFFAOYSA-N 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
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- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 10
- 150000004984 aromatic diamines Chemical class 0.000 description 9
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- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 6
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- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 5
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- IJJNNSUCZDJDLP-UHFFFAOYSA-N 4-[1-(3,4-dicarboxyphenyl)ethyl]phthalic acid Chemical compound C=1C=C(C(O)=O)C(C(O)=O)=CC=1C(C)C1=CC=C(C(O)=O)C(C(O)=O)=C1 IJJNNSUCZDJDLP-UHFFFAOYSA-N 0.000 description 2
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- WUPRYUDHUFLKFL-UHFFFAOYSA-N 4-[3-(4-aminophenoxy)phenoxy]aniline Chemical compound C1=CC(N)=CC=C1OC1=CC=CC(OC=2C=CC(N)=CC=2)=C1 WUPRYUDHUFLKFL-UHFFFAOYSA-N 0.000 description 2
- KMKWGXGSGPYISJ-UHFFFAOYSA-N 4-[4-[2-[4-(4-aminophenoxy)phenyl]propan-2-yl]phenoxy]aniline Chemical compound C=1C=C(OC=2C=CC(N)=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OC1=CC=C(N)C=C1 KMKWGXGSGPYISJ-UHFFFAOYSA-N 0.000 description 2
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
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- OBKARQMATMRWQZ-UHFFFAOYSA-N naphthalene-1,2,5,6-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 OBKARQMATMRWQZ-UHFFFAOYSA-N 0.000 description 1
- KQSABULTKYLFEV-UHFFFAOYSA-N naphthalene-1,5-diamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1N KQSABULTKYLFEV-UHFFFAOYSA-N 0.000 description 1
- DOBFTMLCEYUAQC-UHFFFAOYSA-N naphthalene-2,3,6,7-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C=C2C=C(C(O)=O)C(C(=O)O)=CC2=C1 DOBFTMLCEYUAQC-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 150000008039 phosphoramides Chemical class 0.000 description 1
- CLYVDMAATCIVBF-UHFFFAOYSA-N pigment red 224 Chemical compound C=12C3=CC=C(C(OC4=O)=O)C2=C4C=CC=1C1=CC=C2C(=O)OC(=O)C4=CC=C3C1=C42 CLYVDMAATCIVBF-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 125000000101 thioether group Chemical group 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003739 xylenols Chemical class 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
- C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09J179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2479/00—Presence of polyamine or polyimide
- C09J2479/08—Presence of polyamine or polyimide polyimide
- C09J2479/086—Presence of polyamine or polyimide polyimide in the substrate
-
- 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]
- Y10T428/31725—Of polyamide
- Y10T428/31728—Next to second layer of polyamide
Definitions
- the present invention relates to an adhesive film provided with an adhesive layer containing a thermoplastic polyimide on at least one surface of a highly heat-resistant polyimide layer.
- the flexible laminate has a structure in which a circuit made of metal foil is formed on an insulating film.
- the flexible laminate is made of various insulating materials, uses a flexible insulating film as a substrate, and heats and compresses a metal foil on the surface of the substrate via various adhesive materials. It is manufactured by a method of bonding together.
- a polyimide film or the like is preferably used as the insulating film.
- a thermosetting adhesive such as an epoxy-based or acrylic-based adhesive is generally used (hereinafter, FPC using these thermosetting adhesives is also referred to as a three-layer FPC).
- thermosetting adhesive has an advantage that bonding at a relatively low temperature is possible.
- the required characteristics such as heat resistance, flexibility, and electrical reliability become stricter, it will be difficult to cope with a three-layer FPC using a thermosetting adhesive.
- an FPC using a metal layer directly on an insulating film or using a thermoplastic polyimide for an adhesive layer hereinafter, also referred to as a two-layer FPC.
- This two-layer FPC has better characteristics than the three-layer FPC, and demand is expected to grow in the future.
- a flexible metal-clad laminate used for a two-layer FPC is manufactured by casting a polyamic acid, which is a precursor of polyimide, onto a metal foil, applying the polyamic acid, and then imidizing the polyamic acid, a sputtering method, and a plating method.
- Examples include a metallizing method in which a metal layer is directly provided on a polyimide film, and a laminating method in which a polyimide film and a metal foil are bonded via a thermoplastic polyimide.
- the laminating method has a wider range of applicable metal foil thickness than the casting method The equipment cost is lower than that of the metallizing method.
- a hot roll laminating device or a double belt press device for continuously laminating while feeding out a roll-shaped material is used as a device for performing lamination.
- an adhesive film in which a thermoplastic polyimide layer is provided on at least one surface of a polyimide film is widely used.
- a coating method comprising applying a solution-state thermoplastic polyimide or a precursor thereof to one or both surfaces of a base polyimide film and drying the coated polyimide film. And laminating a thermoplastic polyimide film on one or both sides of the base polyimide film by heating and laminating.
- a co-extrusion single-cast coating method for forming for example, Patent Documents 1 and 2.
- the co-extrusion one-cast coating method has the advantage that the productivity and product yield are higher than other methods because the number of necessary steps is small.
- the conventional co-extrusion one-cast coating method has been studied on the premise of a so-called thermal curing method in which imidization is substantially performed only by heating.
- the heat curing method has a problem in that productivity is low because the steps of volatilization / removal of a solvent and imidization in the film forming step are extremely long.
- the low productivity leads to an increase in the total cost. Therefore, the conventional co-extrusion single-cast coating method cannot always provide an adhesive film at the cost required by the factory. there were.
- Patent Document 1 Japanese Patent No. 2946416
- Patent Document 2 JP-A-7-214637
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a method for producing an adhesive film having a remarkably high productivity as compared with a conventional method.
- the present invention provides at least one of the heat-resistant polyimide layers by a co-extrusion single-cast coating method.
- a method for producing an adhesive film by laminating an adhesive layer containing a thermoplastic polyimide on a surface, comprising a precursor solution of a highly heat-resistant polyimide and a solution containing a thermoplastic polyimide or a precursor of a thermoplastic polyimide.
- the present invention relates to a method for producing an adhesive film, characterized by including a chemical dehydrating agent and a catalyst in a solution containing a body.
- a preferred embodiment is characterized in that 0.5 to 5 mol of the chemical dehydrating agent is contained per 1 mol of the amide acid unit in the polyamic acid contained in the solution containing the chemical dehydrating agent and the catalyst. And a method for producing the adhesive film.
- a further preferred embodiment is characterized in that 0.05 to 3 mol of the catalyst is contained per 1 mol of the amic acid unit in the polyamic acid contained in the solution containing the chemical dehydrating agent and the catalyst. And a method for producing the adhesive film.
- the productivity of the adhesive film can be dramatically improved as compared with the conventional method, and the adhesive film can be provided at a low cost.
- the adhesive film according to the present invention is characterized in that an adhesive layer containing a thermoplastic polyimide is provided on at least one surface of a highly heat-resistant polyimide layer.
- the highly heat-resistant polyimide layer according to the present invention can be formed by using a force that can be formed by using various polyimide materials. In the process of processing using the adhesive film, or at the temperature usually exposed in the form of the final product. If it is preferable that the non-thermoplastic polyimide resin is not easily thermally deformed, it is preferable that the non-thermoplastic polyimide resin contains 90 wt% or more.
- the molecular structure and thickness are not particularly limited.
- any known method can be used.
- aromatic dianhydride and aromatic diamine are substantially used.
- a solution is prepared by dissolving an equimolar amount in an organic solvent and stirring the resulting solution under controlled temperature conditions until the polymerization of the acid dianhydride and diamine is completed.
- These polyamic acid solutions are usually 5 to 35 wt%, preferably 10 to 30 wt%. Obtained in concentration. When the concentration is in this range, an appropriate molecular weight and solution viscosity can be easily obtained.
- the polymerization method all known methods and a method combining them can be used.
- the characteristic of the polymerization method in the polymerization of polyamic acid lies in the order of adding the monomers, and by controlling the order of adding the monomers, it is possible to control various physical properties of the high heat-resistant polyimide obtained. Therefore, in the present invention, any method of adding a monomer may be used for the polymerization of polyamic acid.
- Typical polymerization methods include the following. That is,
- a polymerization method which can be favorably performed using a polyamic acid obtained by using any of the above polymerization methods is not particularly limited.
- a diamine component having a rigid structure represented by paraphenylenediamine / substituted benzidine is used. It is preferable to use a polymerization method for obtaining a prepolymer. By using this method, a polyimide film having a high elastic modulus and a small coefficient of hygroscopic expansion tends to be easily obtained.
- the molar ratio of diamine having a rigid structure and acid dianhydride used in the preparation of prepolymer is 100: 70 to: LOO: 99 or 70: 100 to 99: 1100, and further, 100: 75 to: LOO: 90 or 75: 100-90: 100 children. If the specific force is below the above range, the effect of improving the elastic modulus and the coefficient of hygroscopic expansion cannot be obtained.If the specific force is beyond the above range, adverse effects such as an excessively small thermal expansion coefficient and a small tensile elongation may occur. is there.
- Suitable acid anhydrides that can be suitably used in the present invention include pyromellitic dianhydride, 2,3,6,7-naphthalenetetracarboxylic dianhydride, 3,3 ', 4,4, -biphene -Letetracarbonic dianhydride, 1,2,5,6 naphthalenetetracarboxylic dianhydride, 2,2 ', 3,3,1-biphenyltetracarboxylic dianhydride, 3,3', 4 4,1-benzophenonetetracarboxylic dianhydride, 4,4'-oxyphthalic dianhydride, 2,2 bis (3,4 dicarboxyphenyl) propane dianhydride, 3,4,9,10 perylene Tetracarboxylic dianhydride, bis (3,4 dicarboxyphenyl) propane dianhydride, 1,1-bis (2,3 dicarboxyphenyl) ethane dianhydride, 1,1 bis (3,4 di Carboxypheny
- the preferred amounts of 3,3 ', 4,4'-benzophenonetetracarboxylic dianhydride and ⁇ or 4,4'oxyphthalic dianhydride are as follows. It is 60 mol% or less, preferably 55 mol% or less, more preferably 50 mol% or less, based on the total acid dianhydride. 3,3 ', 4,4'-Benzophenonetetracarboxylic dianhydride and / or 4,4'-oxyphthalic acid dianhydride capacity If this range is exceeded, the glass transition temperature of the highly heat-resistant polyimide layer Is undesirably too low, or the storage modulus at high temperatures becomes too low, making the film formation itself difficult.
- the preferred amount is 40 to: L00 mol%, more preferably 45 to: L00 mol%, and particularly preferably 50 to L00 mol%.
- Suitable diamines that can be suitably used in the polyamic acid composition of the precursor of the highly heat-resistant polyimide according to the present invention include 4,4′-diaminodiphenylpropane and 4,4′-diaminodiphenyl Phenylmethane, benzidine, 3,3'-dicyclobenzidine, 3,3'-dimethylbenzidine, 2,2 'dimethinolebenzidine, 3,3'dimethoxybenzidine, 2,2'dimethoxybenzidine, 4, 4'-diaminodiphenylsulfide, 3,3'-diaminodiphenylsulfone, 4,4'diaminodiphenylsulfone, 4,4'oxydianiline, 3,3'oxydianiline, 3,4'oxydianiline, 1,5 diamino naphthalene, 4, 4 'diamino diphenyl di-ethyl silane, 4, 4' diamino diphenyl si
- diamines having a so-called rigid structure typified by diaminobenzenes and benzidines and diamines having a flexible structure such as an ether group, a sulfone group, a ketone group, and a sulfide group
- a rigid structure is obtained.
- the use ratio of diamine having a structure and a flexible structure is 80Z20 to 20Z80, preferably 70 ⁇ 30 to 30 ⁇ ⁇ 70, particularly preferably 60,40 to 30/70 in a molar ratio.
- the use ratio of diamin having a rigid structure exceeds the above range, the tensile elongation of the obtained layer tends to decrease, and if it is below this range, the glass transition temperature becomes too low or the storage elastic modulus at high temperature becomes low. It is not preferable because it may have adverse effects such as making the film formation difficult due to too low a temperature.
- the high heat-resistant polyimide layer used in the present invention is not limited to the above-mentioned range, but may be an aromatic acid diamine so as to have a desired property within the above-mentioned range. It is particularly preferable to determine and use the kind and the mixing ratio of the hydrate and the aromatic diamine.
- any solvent can be used as long as it dissolves the polyamic acid.
- sulfoxide-based solvents such as dimethyl sulfoxide and getyl sulfoxide, and ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylformamide, ⁇ ⁇ ⁇ , ⁇ Formamide solvents such as getyl formamide, ⁇ , ⁇ Acetamide solvents such as dimethylacetamide, ⁇ , ⁇ Jethyl acetoamide, and pyrrolidone solvents such as ⁇ -methyl 2-pyrrolidone and ⁇ Bu1-2-piperidone , Phenol, o-, m-, or p-Phenol solvents such as cresol, xylenol, halogenated phenol, and catechol; ether solvents such as tetrahydrofuran, dioxane, and dioxolan; and alcohol solvents such as methanol, ethanol, and but
- Butyl There cellosolve such as mouth cellosolve, Kisamechiru phosphoramides the tooth, I -, etc. Petit port Rataton can be mentioned, but it is desirable to use them alone or as a mixture, further xylene, aromatic hydrocarbons such as toluene Can also be used.
- formamide solvents such as ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylformamide and ⁇ , ⁇ ⁇ ethylformamide can be particularly preferably used.
- water is preferably removed as much as possible to promote the decomposition of the polyamic acid.
- Fillers can also be added for the purpose of improving various properties of the film such as slidability, thermal conductivity, conductivity, corona resistance, and loop stiffness. Any filler may be used, but preferred examples include silica, titanium oxide, alumina, silicon nitride, boron nitride, calcium hydrogen phosphate, calcium phosphate, and mica.
- the particle size of the filler is not particularly limited since it is determined by the properties of the film to be modified and the type of filler to be added, but generally the average particle size is 0.05 to 100 m. It is preferably 0.1 to 75 m, more preferably 0.1 to 50 m, and particularly preferably 0.1 to 25 / 1 ⁇ . If the particle size is below this range, the modifying effect will appear. If it exceeds this range, the surface properties may be significantly impaired, or the mechanical properties may be greatly reduced. Also, the number of fillers to be added is not particularly limited because it is determined by the properties of the film to be modified / the particle size of the filler.
- the amount of filler added is 0.01 to 100 parts by weight of polyimide, 100 parts by weight of L, preferably 0.01 to 90 parts by weight, and more preferably 0.02 to 80 parts by weight. . If the amount of filler is less than this range, the effect of the modification by the filler is less likely to appear, and if it exceeds this range, the mechanical properties of the film may be significantly impaired. Filler of filler is
- a method of preparing a dispersion containing a filler and mixing this with a polyamic acid organic solvent solution, etc.! / A method of mixing a dispersion containing a filler with a polyamic acid solution may be used.
- a method of mixing immediately before film formation is preferable because contamination by a filler in a production line is minimized.
- a dispersant, a thickener and the like can be used within a range that does not affect the physical properties of the film.
- thermoplastic polyimide contained in the adhesive layer thermoplastic polyimide, thermoplastic polyamideimide, thermoplastic polyetherimide, thermoplastic polyesterimide, and the like can be suitably used.
- thermoplastic polyesterimide is particularly preferably used from the viewpoint of low moisture absorption characteristics.
- the thermoplastic polyimide in the present invention has a range of 150 to 300 ° C.
- the Tg can be determined from the value of the inflection point of the storage modulus measured by a dynamic viscoelasticity measuring device (DMA).
- DMA dynamic viscoelasticity measuring device
- the polyamic acid as a precursor of the thermoplastic polyimide is not particularly limited, and any known polyamic acid can be used.
- known raw materials and reaction conditions can be used (for example, see Examples described later).
- an inorganic or organic filler may be added.
- the co-extrusion one-cast coating method according to the present invention refers to a two-layer coating of a precursor solution of a highly heat-resistant polyimide and a solution containing a thermoplastic polyimide or a solution containing a precursor of a thermoplastic polyimide.
- a method for producing a film comprising the steps of simultaneously supplying to an extruder having the above-mentioned extrusion die and extruding both solutions as at least two-layered thin films from a discharge port of the die.
- the two solutions extruded from an extrusion die having two or more layers are continuously extruded onto a smooth support, and then the multilayer solution on the support is formed.
- a multilayer film having self-supporting properties By volatilizing at least a part of the solvent of the thin film, a multilayer film having self-supporting properties can be obtained. Further, the multilayer film is peeled off from the support, and finally, the multilayer film is subjected to a sufficient heat treatment at a high temperature (250 to 600 ° C.) to substantially remove the solvent and to imidize. By proceeding, the desired adhesive film is obtained.
- the imidization ratio may be intentionally lowered and Z or a solvent may be left.
- the method is not particularly limited, but the method using heating and Z or blowing is the simplest method. If the temperature at the time of the heating is too high, the solvent will rapidly evaporate, and traces of the evaporation will cause micro defects to be finally formed in the obtained adhesive film. Preferably, it is below ° C.
- extrusion molding dies having two or more layers those having various structures can be used.
- a T-die for producing a film for a plurality of layers can be used.
- a feed block ⁇ dice and a multi-male dice are particularly preferably used.
- the method for producing an adhesive film according to the present invention is characterized in that a solution of a precursor of a highly heat-resistant polyimide and a solution containing a thermoplastic polyimide or a solution containing a precursor of a thermoplastic polyimide are used.
- a chemical dehydrating agent and a catalyst this method is hereinafter referred to as a chemical curing method.
- polyimide is a precursor of polyimide, that is, dehydration conversion from polyamic acid.
- a thermal curing method using only heat and a chemical curing method using a chemical dehydrating agent By using the chemical curing method as in the present invention, it is possible to significantly improve productivity in producing a polyimide resin as compared with the heat curing method.
- a dehydration ring-closing agent for various polyamic acids can be used, and aliphatic acid anhydrides, aromatic acid anhydrides, ⁇ , N'-dialkylcarpo- imides, lower fatty acids
- a group halide, a halogenated lower aliphatic acid anhydride, diaryl sulfonic acid, a logenide, a thionyl halide or a mixture of two or more thereof can be preferably used.
- aliphatic acid anhydrides and aromatic acid anhydrides work well.
- catalyst widely refers to a component having an effect of promoting the dehydration ring-closing effect of a chemical dehydrating agent on polyamic acid.
- a chemical dehydrating agent for example, an aliphatic tertiary amine, an aromatic tertiary amine, or a heterocyclic tertiary amine is used. be able to.
- nitrogen-containing heterocyclic compounds such as imidazole, benzimidazole, isoquinoline, quinoline, and j8-picoline are particularly preferred.
- the preferred amount of the chemical dehydrating agent is 0.5 to 5 mol, preferably 0.7 to 4 mol, per 1 mol of the amide acid unit in the polyamic acid contained in the solution containing the chemical dehydrating agent and the catalyst. It is mor.
- the preferred amount of the catalyst is 0.05 to 3 mol, preferably 0.2 to 2 mol, per 1 mol of the amic acid unit in the polyamic acid contained in the solution containing the chemical dehydrating agent and the catalyst. .
- the dehydrating agent and the catalyst are below the above ranges, the chemical imidization is insufficient, and the material may be broken during firing or the mechanical strength may be reduced. Also these If the amount exceeds the above range, imidization proceeds too quickly, and it may be difficult to cast into a film, which is not preferable.
- the finally obtained adhesive film has a metal foil adhered to at least one surface by a lamination method. Therefore, in consideration of the form in which the metal foil is adhered to at least one surface, that is, the dimensional stability when processed into a flexible metal-clad laminate, the thermal expansion coefficient of the adhesive film should be controlled as follows. Is preferred.
- the coefficient of thermal expansion of the polyimide film exceeds the above range, the coefficient of thermal expansion when the adhesive film is formed into an adhesive film becomes too large than that of the metal foil. The difference may increase, and the dimensional change of the resulting flexible metal-clad laminate may increase. If the coefficient of thermal expansion is lower than the above range, the thermal expansion coefficient of the adhesive film is too small compared to the metal foil, so the difference in thermal behavior during lamination also increases, and the dimensional change of the resulting flexible metal-clad laminate May be large.
- each layer of the adhesive film may be appropriately adjusted so as to have a total thickness according to the application, and the tensile elastic modulus in the longitudinal direction and the width direction of the obtained adhesive film is 5.0 to: L lGPa, preferably 5.5 to: LOGPa is preferred. If the tensile modulus is less than the above range, the laminate tends to be affected by the tension during lamination, so that different thermal stresses occur in the MD and TD directions, and the dimensional change of the resulting flexible metal-clad laminate may increase. is there. Conversely, if the tensile modulus exceeds the above range, the resulting flexible metal-clad laminate may have poor flexibility. Generally, since the tensile elastic modulus of the adhesive layer is smaller than that of the high heat-resistant polyimide layer, the bow I tension elastic modulus of the adhesive film tends to decrease as the thickness ratio of the adhesive layer increases.
- the thermal expansion coefficient of the adhesive film is within a range of ⁇ 6 ppmZ ° C at 200 to 300 ° C.
- the coefficient of thermal expansion of the adhesive film can be adjusted by changing the thickness ratio between the highly heat-resistant polyimide layer and the adhesive layer.
- the metal foil is not particularly limited, but when the flexible metal-clad laminate of the present invention is used for electronic equipment and electrical equipment, for example, copper or copper alloy, stainless steel, The alloy, nickel or a nickel alloy (including a 42 alloy), aluminum or an aluminum alloy foil can be used.
- copper foils such as rolled copper foils and electrolytic copper foils are often used, but they can also be preferably used in the present invention.
- a protective layer, a heat-resistant layer, or an adhesive layer may be applied to the surface of these metal foils.
- N, N dimethylformamide (hereinafter, also referred to as DMF) cooled to 10 ° C, 4,4, oxidiarin (hereinafter, also referred to as ODA) per 239 kg, 6.9 kg, p-phenylenediamine (hereinafter, also referred to as p-PDA) 6.2 kg, 2,2 bis [4- (4-aminophenoxy) phenyl] propane (hereinafter also referred to as BAPP) 9.
- PMDA pyromellitic dianhydride
- BTDA benzophenonetetracarbonic dianhydride
- the mixture was stirred for 1 hour to obtain a polyamic acid solution of a precursor of a highly heat-resistant polyimide having a solid content concentration of 18% by weight and a rotational viscosity at 23 ° C. of 3,500 boise.
- the mixture was stirred for 1 hour to obtain a polyamic acid solution of a precursor of a highly heat-resistant polyimide having a solid content of 18% by weight and a rotational viscosity at 23 ° C. of 3400 vise.
- the polyamic acid solution of the precursor of the highly heat-resistant polyimide obtained in Synthesis Example 1 was made to contain the following chemical dehydrating agent and catalyst.
- Chemical dehydrating agent 2 moles of acetic anhydride per mole of amide acid amide of polyamide acid, a precursor of high heat-resistant polyimide
- Chemical dehydrating agent 2 moles of acetic anhydride per 1 mole of amide acid amide of polyamide acid, a precursor of thermoplastic polyimide
- the respective polyamic acid solutions are successively arranged in the order that the outer layer is a polyamic acid solution of a precursor of a thermoplastic polyimide and the inner layer is a polyamic acid solution of a precursor of a highly heat-resistant polyimide solution. And cast it on a stainless steel endless belt running 20 mm below the T-die.
- the self-supporting gel film was peeled off from the endless belt and fixed on a tenter clip.300 ° CX, 30 ° C, 400 ° CX, 50 ° C, 450 ° CX After drying for 10 minutes, an adhesive film comprising 4 ⁇ m of each thermoplastic polyimide layer and 17 m of a high heat-resistant polyimide layer was obtained.
- Example 1 was repeated except that the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 3 was used instead of the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 1.
- An adhesive film was prepared in the same procedure as in 1.
- Example 1 was repeated except that the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 4 was used instead of using the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 1.
- An adhesive film was prepared in the same procedure as in 1.
- Example 1 was repeated except that the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 5 was used instead of using the polyamic acid solution of the precursor of the high heat-resistant polyimide obtained in Synthesis Example 1.
- An adhesive film was prepared in the same procedure as in 1.
- an adhesive film was prepared in the same procedure as in Example 1.
- the polyamic acid solution of the precursor of the high heat-resistant polyimide contains a chemical dehydrating agent, so that the power of the polyamide acid solution of the thermoplastic polyimide precursor is increased. It is presumed that the heat-resistant polyimide precursor was also transferred to a sufficiently self-supporting gel film.
- the polyamic acid solution of the precursor of the highly heat-resistant polyimide obtained in Synthesis Example 1 was made to contain the following chemical dehydrating agent and catalyst.
- thermoplastic polyimide The polyamic acid solution of the body contains a chemical dehydrating agent, so that the power of the polyamic acid solution of the precursor of the high heat-resistant polyimide is reduced. It is presumed that the film was transferred to a sufficiently self-supporting gel film.
- the polyamic acid solution of the precursor of the highly heat-resistant polyimide obtained in Synthesis Example 1 and the polyamic acid solution of the precursor of the thermoplastic polyimide obtained in Synthesis Example 6 were formed from a three-layer multi-hold T-die to form an outer layer. Each polyamic acid solution was continuously extruded in the order that the polyamic acid solution of the precursor of the thermoplastic polyimide and the inner layer became the polyamic acid solution of the precursor of the high heat-resistant polyimide solution, and then traveled 20 mm below the T-die. Te! /, Cast on a stainless steel endless belt.
- the polyamic acid solution of the precursor of the highly heat-resistant polyimide obtained in Synthesis Example 1 and the polyamic acid solution of the precursor of the thermoplastic polyimide obtained in Synthesis Example 6 were formed from a three-layer multi-hold T-die to form an outer layer. Each polyamic acid solution was continuously extruded in the order that the polyamic acid solution of the precursor of the thermoplastic polyimide and the inner layer became the polyamic acid solution of the precursor of the high heat-resistant polyimide solution, and then traveled 20 mm below the T-die. Te! /, Cast on a stainless steel endless belt.
- the self-supporting gel film After heating this resin film at 130 ° C for 600 seconds, the self-supporting gel film is peeled off from the endless belt and fixed to a tenter clip, 300 ° C for 300 seconds, 400 ° C for 300 seconds, and 450 ° C for By drying and imidizing in 60 seconds (heating time: 1260 seconds in total), The desired adhesive film was obtained. However, the resulting adhesive film has numerous cracks, and the adhesive film cannot be used as an adhesive film for a two-layer FPC.
- the polyamic acid solution of the precursor of the highly heat-resistant polyimide obtained in Synthesis Example 1 and the polyamic acid solution of the precursor of the thermoplastic polyimide obtained in Synthesis Example 6 were formed from a three-layer multi-hold T-die to form an outer layer. Each polyamic acid solution was continuously extruded in the order that the polyamic acid solution of the precursor of the thermoplastic polyimide and the inner layer became the polyamic acid solution of the precursor of the high heat-resistant polyimide solution, and then traveled 20 mm below the T-die. Te! /, Cast on a stainless steel endless belt.
- the self-supporting gel film After heating this resin film at 130 ° C for 600 seconds, the self-supporting gel film is peeled off from the endless belt and fixed to a tenter clip, and 200 ° C for 300 seconds, 300 ° C for 300 seconds, and 400 ° C for 400 seconds
- the target adhesive film was obtained by drying and imidizing at 300 ° C. and 450 ° C. for 60 seconds (calorie heat time: total 1560 seconds).
- the method for manufacturing an adhesive film of the example can provide an adhesive film in an extremely short manufacturing time as compared with the method for manufacturing the adhesive film of the comparative example.
- the productivity of the adhesive film can be dramatically improved as compared with the conventional co-extrusion single-cast coating method using a thermal curing method.
- the adhesive film can be provided at low cost.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Adhesive Tapes (AREA)
- Moulding By Coating Moulds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
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CN200580016000XA CN1957051B (zh) | 2004-05-18 | 2005-04-27 | 粘合薄膜的制造方法 |
US11/601,267 US7678315B2 (en) | 2004-05-18 | 2006-11-17 | Process for producing adhesive film |
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US11/601,267 Continuation-In-Part US7678315B2 (en) | 2004-05-18 | 2006-11-17 | Process for producing adhesive film |
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JP (2) | JPWO2005111165A1 (ja) |
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US20070158869A1 (en) | 2007-07-12 |
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US7678315B2 (en) | 2010-03-16 |
TWI379879B (en) | 2012-12-21 |
CN1957051B (zh) | 2010-12-22 |
JP2013032532A (ja) | 2013-02-14 |
JPWO2005111165A1 (ja) | 2008-03-27 |
CN1957051A (zh) | 2007-05-02 |
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