WO2006109753A1 - ポリイミドフィルムの製造方法およびポリイミドフィルム - Google Patents
ポリイミドフィルムの製造方法およびポリイミドフィルム Download PDFInfo
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- WO2006109753A1 WO2006109753A1 PCT/JP2006/307505 JP2006307505W WO2006109753A1 WO 2006109753 A1 WO2006109753 A1 WO 2006109753A1 JP 2006307505 W JP2006307505 W JP 2006307505W WO 2006109753 A1 WO2006109753 A1 WO 2006109753A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1067—Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
- C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating
- C23C14/025—Metallic sublayers
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
- C23C14/205—Metallic material, boron or silicon on organic substrates by cathodic sputtering
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/584—Non-reactive treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use 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 C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12639—Adjacent, identical composition, components
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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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
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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
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/269—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension including synthetic resin or polymer layer or component
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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.]
Definitions
- the present invention relates to a method for producing a polyimide film.
- the present invention is also useful as an electric 'electronic material, a structural material, a precision molding material, a thermal control material, etc. in a wide range of fields such as electric' electronic device field, semiconductor field, aerospace / space field and nuclear field.
- the present invention relates to a polyimide film and a copper-clad polyimide film suitable as an insulating film for COF.
- a polyimide film is manufactured by first producing a self-supporting film of a polyimide precursor solution, heating it, and imidizing it.
- the self-supporting film is obtained by casting and applying a polyimide precursor solution on a support such as a stainless steel substrate or a stainless steel belt, to a degree such that it becomes self-supporting (meaning a step before the usual curing step), for example 100 — Manufactured by heating at 180 ° C for about 60 minutes.
- the support when the support is scratched or the like, it is transferred to the self-supporting film and the film surface is scratched.
- the opposite side of the film not in contact with the support tends to have a relatively large surface roughness.
- the polyimide film from which the self-supporting film strength with scratches is obtained is scratched, and the self-supporting film power from which the surface roughness is large is also high in surface roughness. The surface roughness is small, with few scratches, etc./ A method for producing a polyimide film is required.
- polyimide films have a problem that even if metal deposition or sputtering is performed to form a metal layer, a laminate having a large peel strength can not be obtained.
- a heat resistant surface treatment agent (coupling agent) is applied to the surface of the solidified film (such as the above-mentioned self-supporting film) giving the polyimide film or the polyimide film.
- a method for producing a polyimide film was proposed, in which the film is heated and dried (Patent Documents 6 to 11).
- the polyimide precursor solution also causes curling in the polyimide film due to shrinkage of the substrate when the solvent is distilled off and when it is imidized, etc. It is considered to be a thing.
- various polyimide precursor varnishes are cast, for example, by a multilayer extruder, and the linear expansion coefficient of the surface and the inside of the polyimide precursor is controlled in the thickness direction to curl the polyimide film. It is known that the difference in linear expansion coefficient between a convex surface and a concave surface can be alleviated and curls can be removed effectively.
- Patent Document 1 Japanese Patent Application Laid-Open No. 4 261466
- Patent Document 2 Japanese Patent Application Laid-Open No. 6-073209
- Patent Document 3 Japanese Patent Application Publication No. 7-503984
- Patent Document 4 Japanese Patent Application Laid-Open No. 59-86634
- Patent Document 5 JP-A-2-134241
- Patent Document 6 Japanese Patent Publication No. 6-002828
- Patent Document 7 Japanese Patent Application Laid-Open No. 6-336533
- Patent Document 8 Japanese Patent Application Laid-Open No. 7-273466
- Patent Document 9 JP-A-8-120098
- Patent Document 10 JP-A-8-134234
- Patent Document 11 JP-A-9-03221.
- An object of the present invention is to provide a method for producing a polyimide film excellent in surface smoothness, having a small surface roughness with few surface scratches.
- Another object of the present invention is to provide good adhesion, sputtering and metal deposition properties while maintaining excellent properties such as thermal properties, physical properties and electrical properties of aromatic polyimide films. It is an object of the present invention to provide a method for producing a single-layer polyimide film with controlled curl. Another object is to provide a copper-clad polyimide film using the polyimide film obtained by this method.
- the present invention relates to the following matters.
- the polyimide film according to the above-mentioned 8 which has a curling force O measured on a 10 cm square sample of the film, in the range of 0 to 130 mm.
- a copper-clad polyimide film obtained by forming a sputtered base metal layer and a copper plating layer on the surface of the polyimide film described in 8 above, to which the organic solvent solution of the coupling agent is applied at the time of production.
- the underlying metal layer is composed of a 1 to 30 nm thick NiZCr alloy layer and a 100 to 1000 nm thick sputter copper layer,
- an organic liquid is applied to both sides of a self-supporting film of a polyimide precursor solution, and this is heated and imidized to produce a polyimide film.
- a polyimide film with few scratches can be obtained, and the surface roughness of the obtained polyimide film can be reduced.
- a polyimide film excellent in surface smoothness can be obtained.
- the polyimide film when a coupling agent is applied to the surface of a self-supporting film in order to improve the adhesion of the polyimide film, the polyimide film may be curled, and in particular a single layer polyimide film. In the case of precise curl control is difficult.
- a coating solution of an organic solvent is applied to one side of a self-supporting film to improve adhesion, and an organic liquid is applied to the other side.
- the organic liquid may be an organic solvent solution of a coupling agent.
- the curling of the polyimide film is controlled by controlling the application amount of the organic liquid.
- FIG. 1 shows the relationship between the amount of applied solvent and the amount of curling in Example 1.
- FIG. 2 shows the amount of applied solvent and the amount of curling in Example 2. It is a diagram illustrating the relationship Best mode for carrying out the invention
- a self-supporting film of a polyimide precursor solution is prepared. Then, an organic liquid is applied to both sides of this self-supporting film, and then heated and imidized to produce a polyimide film.
- a self-supporting film of a polyimide precursor solution is cast on a support after adding an imido type catalyst, an organophosphorus compound and inorganic fine particles, if necessary, to an organic solvent solution of a polyimide precursor giving a polyimide. It is manufactured by applying and heating to the extent that it becomes self-supporting (meaning the step before the usual curing process).
- polyimide precursor those produced from aromatic tetracarboxylic acid dianhydride and aromatic diamine are preferable.
- BPDA 3, 3, 4, 4, 4-biphenyltetracarboxylic acid dianhydride
- PPD para-diazole amine
- Preferred is a polyimide precursor produced from (4) and optionally, 4,4'-diaminodiphenyl ether (hereinafter also simply referred to as DADE).
- DADE 4,4'-diaminodiphenyl ether
- PPD / DADE molar ratio
- pyromellitic dianhydride (hereinafter sometimes simply referred to as PMDA), or 3, 3 ', 4, 4-biphenyltetracarboxylic dianhydride and pyromellitic dianhydride And aromatic tetracarboxylic acid dianhydrides, and benzenediamine which is a polyimide precursor prepared from aromatic diamines such as biphenyldiamine are also preferable.
- aromatic diamine it is preferable to use noraf elendiamine, or aromatic diamine having PPD / DADE of 90/10 to LO / 90, or tolidine (ortho form, meta form).
- BPDA / P The MDA is preferably 0/100 to 90/10.
- a polyimide precursor produced from pyromellitic dianhydride and para-phase di-diamine and 4,4'-diaminodiphenyl ether.
- DADE / PPD is preferably 90ZlO to 10Z90.
- the synthesis of the polyimide precursor is achieved by random polymerization or block polymerization of approximately equimolar aromatic tetracarboxylic acid dianhydride and aromatic diamine in an organic solvent. May also be mixed with the reaction conditions was keep two or more polyimide precursors in which either of these two components is excessive, the respective polyimide precursor solution together.
- the polyimide precursor solution thus obtained can be used as it is or, if necessary, removing the solvent or covering it to produce a self-supporting film.
- organic solvent of the polyimide precursor solution examples include ⁇ -methyl-2 pyrrolidone, ⁇ , ⁇ -dimethyl formamide, ⁇ , ⁇ ⁇ ⁇ ⁇ dimethylacetoamide, ⁇ , ⁇ and diphenyl acetamide. These organic solvents may be used alone or in combination of two or more.
- the polyimide precursor solution may be coated with an imidization catalyst, an organic phosphorus-containing compound, an inorganic fine particle, etc., if necessary.
- the imidation catalyst a substituted or unsubstituted nitrogen-containing heterocyclic compound, a noble metal oxide compound of the nitrogen-containing heterocyclic compound, a substituted or unsubstituted amino acid complex, an aromatic carbonized compound having a hydroxyl group Hydrogen compounds or aromatic heterocyclic compounds may be mentioned, and in particular, lower groups such as 1,2-dimethylimidazole, ⁇ ⁇ ⁇ methylimidazole, ⁇ ⁇ ⁇ benzyl 2-methylimidazole, 2-methylimidazole, 2-ethylimidazole, 5methylbenzimidazole and the like Alkylimidazole, benzimidazole such as 2-benzimidazole, 2-methylimidazole, isoquinoline, 3, 5-dimethylpyridine, 3, 4-dimethylpyridine, 2, 5 dimethylpyridine, 2, 4 dimethylpyridine, 4- 4-propylpyridine And the like can be suitably used.
- the amount of the imidization catalyst used is
- organic phosphorus-containing compound for example, monobasic phosphoric acid ester, monooctyl Phosphate ester, monolauryl phosphate ester, monomyristyl phosphate ester, monocetyl phosphate ester, monostearyl phosphate ester, monophosphate ester of triethylene glycol monotridecyl ether, monophosphoric acid of tetraethylenediaryl monolauryl ether Ester, monophosphate of diethylene glycol monostearyl ether, dicaprol phosphate, dioctyl phosphate, dicapryl phosphate, dilauryl phosphate, dimyristyl phosphate, dicetyl phosphate, distearyl phosphate, tetraethylene diaryl mononeo Dilinic acid ester of pentyl ether, diphosphoric acid ester of triethylene glycol monotridecyl ether, tetraethylene glycol Call diphosphate of monolau
- ammonia monomethyl amine, monoethyl amine, monopropyl amine, monobutyl amine, dimethyl amine, jetamine, dipropyl amine, dibutylamine, trimethylamine, triethylamine, tripropylamine, tributylamine, monoethanolamine, diethanol And ethanolamine and the like.
- inorganic fine particles fine particles of titanium oxide powder, silicon dioxide (silica) powder, magnesium oxide powder, aluminum oxide powder (alumina) powder, inorganic oxide powder such as zinc oxide powder, fine particles Inorganic nitride powders such as calcium nitride powder and titanium nitride powder, inorganic carbide powders such as calcium carbide powder, and inorganic salt powders such as fine particle calcium carbonate powder, calcium sulfate powder and barium sulfate powder it can. These inorganic fine particles may be used in combination of two or more. In order to uniformly disperse these inorganic fine particles, a means known per se can be applied.
- the self-supporting film of the polyimide precursor solution is composed of the organic solvent solution of the polyimide precursor as described above, or a polyimide precursor solution composition obtained by adding an imidization catalyst, an organic phosphorus-containing compound, inorganic fine particles, etc.
- the material is cast-coated on a support, to a degree such that it becomes self-supporting (meaning a step before the usual curing step), for example, a degree capable of peeling from the support, and the temperature is 100 to 180. It is manufactured by heating for 5 to 60 minutes at ° C.
- the polyimide precursor solution preferably contains about 10 to 30% by mass of the polyimide precursor. Also, As the polyimide precursor solution, one having a polymer concentration of about 8 to 25% by mass is preferable.
- a support for example, a stainless steel substrate, a stainless steel belt or the like is used.
- the peeled self-supporting film needs to apply an organic liquid substantially uniformly, preferably uniformly, to both surfaces of the film. Therefore, a self-supporting film is a film capable of applying an organic liquid almost uniformly, preferably uniformly, on both sides of the film, and heating such as heating temperature or heating time is required to obtain a film in such a state. It is necessary to select the conditions appropriately. In order to obtain such a film, it is necessary to control the solvent contained in the self-supporting film and the imidization of the polyimide precursor.
- the self-supporting film has a heating loss in the range of 20 to 40% by mass, and further a heating loss in the range of 20 to 40% by mass and an imidization coefficient in the range of 8 to 40%.
- the mechanical properties of the film are sufficient to make it easy to apply the organic liquid to the upper surface of the self-supporting film cleanly, and the polyimide film obtained after imidization has foaming, cracks, crazes, cracks, cracking and the like. Not observed !, preferred for!
- the heat loss of the above self-supporting film is a value obtained by drying the film to be measured at 420 ° C. for 20 minutes and using the weight W1 before drying and the weight W2 after drying according to the following equation It is.
- Heat loss (mass%) ⁇ (W1 ⁇ W2) / Wl ⁇ ⁇ 100
- the imidization ratio of the above-mentioned self-supporting film can be determined by the method using a Karl Fischer moisture meter described in JP-A-9-316199, for example, measured by IR (ATR).
- the imidation ratio can be calculated by using the ratio of the vibration band peak area of the film and the full cure product.
- vibration band peaks symmetrical stretching vibration bands of imidocarbo group, benzene ring framework stretching vibration bands, and the like can be used.
- the organic liquid is applied to both sides of the self-supporting film thus obtained.
- a polyimide film excellent in surface smoothness can be obtained.
- the organic liquid is not particularly limited as long as it is liquid, but the same organic solvent as the polyimide precursor solution is suitably used.
- Organic liquid is a mixture of two or more organic compounds, in solution It may be.
- the coated amount of the organic liquid is preferably 1 to 50 g Zm 2 and more preferably 2 to 30 g Zm 2 on the side of the self-supporting film in contact with the support and on the opposite side. 3 to 20 g Z m 2 is particularly preferred.
- the application amount of the organic liquid may be the same or different on both sides.
- Application of the organic liquid can be carried out using a known method, for example, gravure coating, spin coating, silk screen, dip coating, spray coating, bar coating, knife coating, roll coating Known coating methods such as a method, a blade coating method, and a die coating method can be mentioned.
- an organic solvent solution of a coupling agent it is preferable to apply an organic solvent solution of a coupling agent to the self-supporting film.
- the coating amount of the organic solvent solution of Katsupuri ring agent to 50 g / m 2 is preferred instrument 2 to 30 g / m 2 and more preferably tool 3 ⁇ 20GZm 2 is particularly preferred.
- Examples of coupling agents include silane coupling agents and titanate coupling agents.
- Examples of silane coupling agents include ⁇ -glycidoxypropyltrimethoxysilane, ⁇ -glycidoxypropyljetoxysilane, 13 (3,4 epoxycyclohexyl) epoxytrisilanes such as tiltly methoxysilane, boule Vinylsilanes such as trichlorosilane, biortris (j8-methoxyethoxy) silane, vinyltriethoxysilane, vinyltrimethoxysilane, acrylic silanes such as ⁇ -methacryloxypropyltrimethoxysilane, ⁇ - ⁇ -(aminoethyl)- ⁇ -Aminopropyltrimethoxysilane, ⁇ - ⁇ - (Aminoethyl) - ⁇ -Aminopropylmethyldimethoxysilane, ⁇ -Aminopropyltriethoxysilane, ⁇ -
- titanate coupling agent isopropyl triisostearoyl titanate, isopropyl tridecyl benzene sulfo-l titanate, isopropyl tris (diocyl pyrophosphate) titanate, tetraisopropyl bis (diocyl phosphite) titanate, tetra ( 2, 2-Dioxyloxymethyl 1-butyl) bis (di tridecyl) phosphite toitanate, bis (dioctyl pyrophosphate) oxyacetate titanate, bis ( Dithiocylpyrophosphates) ethylene titanate, isopropyl trioctanoyl titanate, isopropyl tritamyl phenyl titanate and the like.
- silane coupling agents in particular ⁇ -aminopropyl monotriethoxysilane, (- ⁇ - (amino ethinole)- ⁇ -aminopropyl monotriethoxysilane, ⁇ (aminocarbo)- ⁇ -amino propyltriethoxysilane, ⁇ - [j8- (Hue - Ruamino) Echinore] Y over ⁇ amino propyl triethoxysilane, Nyu- Hue - Honoré ⁇ Aminopuropi Le triethoxysilane, such as ⁇ phenyl one ⁇ - ⁇ amino propyl trimethoxy silane
- An aminosilane coupling agent is preferred, and among them, particularly preferred is benzene- ⁇ -aminopropyltrimethoxysilane.
- the organic solvent of the coupling agent solution may be the same as the organic solvent of the polyimide precursor solution (the solvent contained in the self-supporting film).
- the organic solvent solution of the coupling agent has a content of the coupling agent of not less than 0.5% by mass, preferably 1 to 1: LOO% by mass, particularly preferably 3 to 60% by mass, still more preferably 5 to 5%. It is preferably 55% by mass.
- the water content is preferably 20% by mass or less, more preferably 10% by mass or less, and particularly preferably 5% by mass or less.
- the rotational viscosity (the solution viscosity measured by a rotational viscometer at a measurement temperature of 25 ° C.) of the organic solvent solution of the coupling agent is preferably 10 to 50000 centipoise.
- the coupling agent may be added to the amide solvent at a concentration of 0.5% by mass or more, particularly preferably 1 to 60% by mass, and more preferably 3 to 55% by mass. Those having low viscosity (particularly, rotational viscosity of 10 to 5000 centipoise) which are uniformly dissolved are preferable.
- the organic solvent solution of the coupling agent is applied to one side of the self-supporting film, and the other side is coated with an organic liquid containing no coupling agent.
- the other side is coated with an organic liquid containing no coupling agent.
- cups are formed on both sides of the self-supporting film. Apply an organic solvent solution of the ring agent.
- applying the organic solvent solution of the coupling agent on one side do not include the coupling agent, but apply the organic solvent solution of the coupling agent on both sides of the applied amount of organic liquid. In the case, it is possible to control the curl by changing the application amount of one of the solutions.
- the organic liquid containing no coupling agent used here is preferably the same organic solvent as the organic solvent solution of the coupling agent, but it is not particularly limited.
- the application amount of the organic liquid for controlling the curl can be determined as follows.
- an organic solvent solution of a coupling agent is applied to one surface of the self-supporting film.
- the coating amount thereof is preferably 1 to 50 g Zm 2 .
- the other side is coated with various amounts of an organic liquid (organic liquid containing no coupling agent, or an organic solvent solution of a coupling agent).
- the film is dried by heating to produce a polyimide film, and the amount of curling of the obtained polyimide film is measured.
- the coating amount of the organic solvent solution of the coupling agent is made constant, and the coating amount of the organic liquid on the other surface is changed to manufacture a polyimide film, and the curl amount is measured to apply the organic liquid.
- Determine the relationship between the amount and the curl amount Specifically, the relationship between the amount of applied organic liquid and the amount of curl is plotted in the figure, and a straight line (or curve) connecting the plots is created.
- the relationship between the coating amount of the coupling agent organic solvent solution, the coating amount of the organic liquid on the other surface, and the curling amount is determined, a polyimide film having the necessary curling amount can be obtained.
- the coating amount of the organic liquid on the other side corresponding to the coating amount of the organic solvent solution of the coupling agent is required. By adopting this value, it becomes possible to determine the coating amount of the organic liquid corresponding to the film thickness and the coating amount of the coupling agent, and it is possible to obtain a polyimide film with improved adhesion and controlled curl. it can.
- a self-supporting film coated with an organic liquid on both sides is heat-treated in the following manner to obtain a polyimide film.
- the heat treatment is carried out by gradually carrying out the imidization of the polymer and the evaporation 'of the solvent at a temperature of about 100 to 400 ° C for about 0.1 to 5 hours, particularly 0.2 to 3 hours. Is appropriate.
- the heat treatment is stepwise carried out at a relatively low temperature of about 100-170 ° C. for a primary heat treatment for about 1-30 minutes, and then at a temperature of 170-220 ° C. for about 1-30 minutes. It is preferable to perform the second heat treatment and then the third heat treatment at a high temperature of 220 to 400 ° C. for about 1 to 30 minutes.
- the fourth high-temperature heat treatment may be performed at a high temperature of 400 to 550 ° C.
- the polyimide film obtained by the present invention has a thickness of about 5 to 125 ⁇ m, preferably 7.
- It is about 5 to 125 ⁇ m, preferably 10 to LOO ⁇ m, and more preferably 10 to 38 ⁇ m.
- a polyimide film having a small surface roughness can be obtained by applying an organic liquid on both sides of a self-supporting film.
- Rms square mean roughness
- Ra arithmetic mean roughness
- Polyimide films having Rmax (maximum height difference) of 60 nm or less on both sides can be obtained.
- Rms is 2.
- Ra is 1.5 nm or less
- Rmax is 30 nm or less.
- the surface roughness of the polyimide film can be measured by atomic force microscopy (AFM).
- an organic solvent solution of a coupling agent is coated on one side of a self-supporting film to improve adhesion, and an organic liquid on the other side (organic solvent of coupling agent)
- an organic liquid on the other side organic solvent of coupling agent
- the measurement of curl is performed as follows.
- the film is less than 550 mm in width, it will be a 10 cm square in the center of the film Leave the cut polyimide film at room temperature and place the convex surface on the lower side, and measure the curl height (Al, A2, A3, A4) of each vertex lifted up on the measurement table, and the average of 4 points The curl height was also calculated by the following equation.
- the curl represents the curl to the side (B side) of the side where the self-supporting film of the polyimide precursor solution is in contact with the support by + value, and the curl to the opposite side (eight side) by-value. Represent.
- the surface coated with the organic solvent solution of the coupling agent has improved adhesiveness, sputtering property and metal deposition property. Therefore, using a polyimide film produced by applying an organic solvent solution of a tensioning agent on at least one side of a self-supporting film, the metal layer used in the metallization method is applied to the surface on which the coupling agent is applied.
- a metal plating layer such as is formed, a metal-clad polyimide film such as copper having sufficient peeling strength can be obtained.
- a polyimide film preferably a long polyimide film having a curl measured on a 10 cm square sample of the film within a range of 0 to 130 mm can be used.
- An undercoating metal layer can be provided on the surface to which the coupling agent has been applied by a metallizing method.
- Metallizing is a method of providing a metal layer different from metal plating and metal foil lamination, and known methods such as vacuum deposition, sputtering, ion plating, electron beam and the like can be used.
- Examples of metals used in the metallization method include copper, nickel, chromium, manganese, aluminum, iron, molybdenum, cobalt, metals such as tungsten, vanadium, titanium, tantalum, or alloys thereof, or metals thereof.
- the metal oxides, the carbides of those metals, and the like can be used. The force is not particularly limited to these materials.
- the thickness of the metal layer formed by the metallizing method can be appropriately selected depending on the purpose of use, and is preferably in the range of 1 to 500 nm, more preferably 5 to 200 nm. Preferred to
- the number of metal layers formed by the metallizing method may be appropriately selected depending on the purpose of use, and may be one, two, or three or more layers.
- the metal layer such as copper or tin can be provided on the surface of the metal layer by a known wet plating method such as electrolytic plating or electroless plating.
- the film thickness of the metal laminated layer such as copper plating is preferably in the range of 1 ⁇ m to 9 ⁇ m because a metal laminated polyimide film is suitable for practical use.
- the metal layer provided by the metallization method may be, for example, two layers of a NiZCr alloy layer of 1 to 30 nm in thickness and a sputtered copper layer of 100 to 1000 nm, and further, a copper plating of 1 to 9 ⁇ m in thickness. Layers can be provided.
- the evaluation method of the film other than the measurement of curl is as follows.
- Peel Strength The copper-clad polyimide film was measured for 90 ° peel strength at a tensile speed of 50 mm Z min.
- the polymerization tank is covered with a predetermined amount of N, N-dimethylacetoamide, and then with 3,3 ', 4,4,4-biphenyltetracarboxylic acid dianhydride, followed by paraphenylamine.
- the logarithmic viscosity of the polymer (measurement temperature: 30 ° C., concentration: 0.5 g / 100 ml solvent, solvent: N, N-dimethylacetoamide) is 1.60, and the polymer concentration is allowed to polymerize at 30 ° C. for 10 hours.
- the polyimide precursor solution was 18% by mass.
- this polyimide precursor solution 0.1 part by mass of a monostearyl phosphate ester triethanolamine salt and 0.5 parts by mass of an average particle diameter of 0.8 m in a ratio of 0.1 part by mass with respect to 100 parts by mass of the polyimide precursor Colloidal silica was added and uniformly mixed to obtain a polyimide precursor solution composition.
- This polyimide precursor solution composition The tumbling viscosity was 3000 boise.
- the polyimide precursor solution composition obtained in Reference Example 1 was continuously extruded from a slit of a T-die mold onto a smooth metal support of a drying oven to form a thin film on the support. After heating the thin film at 120 to 160 ° C. for 10 minutes, the support was also peeled off to obtain a self-supporting film.
- the curling amount for each solvent coating amount (coating amount of N, N dimethyl acetoamide on side A) determined for this polyimide film is shown below.
- Solvent application amount OgZm 2 curl amount: 1 lmm
- Solvent application amount l lgZm 2 curl amount: 6 mm
- Solvent application amount 18 g Zm 2 curl amount: 2 mm.
- the relationship between the coating amount and the curling amount is illustrated in FIG.
- the amount of solvent required to obtain -8 mm force is 7 g Zm 2 .
- a long polyimide film having an average film thickness of 34 m was continuously produced in the same manner as in the above-mentioned method for producing a polyimide film, except that 7 g of Zm 2 was employed as a solvent coating amount.
- the curl value determined for this polyimide film was ⁇ 8 mm, and the curl was controlled.
- the polyimide precursor solution composition obtained in Reference Example 1 was continuously extruded from a slit of a T-die mold onto a smooth metal support of a drying oven to form a thin film on the support. After heating the thin film at 120 to 160 ° C. for 10 minutes, the support was also peeled off to obtain a self-supporting film.
- the curling amount for each solvent coating amount (coating amount of N, N dimethyl acetoamide on side B) determined for this polyimide film is shown below.
- Solvent application amount OgZm 2 curl amount: + 3 mm
- Solvent application amount l lgZm 2 curl amount: — 16 mm
- Solvent application amount 18 g Zm 2 curl amount: 26 mm.
- the relationship between the coating amount and the curling amount is illustrated in FIG.
- the amount of solvent required to obtain -8 mm force is 7 g Zm 2 .
- a long polyimide film having an average film thickness of 34 m was continuously produced in the same manner as in the above-mentioned method for producing a polyimide film, except that 7 g of Zm 2 was used as the solvent coating amount.
- the curl value determined for this polyimide film was -9 mm, and the curl was controlled.
- a 5-nm-thick NiZCr (mass ratio: 8Z2) layer and a 400-nm-thick Cu layer are formed as a sputter underlayer metal layer by a conventional method, and a copper plating of 9 ⁇ m in thickness is formed thereon.
- a copper-clad polyimide film was obtained.
- the 90 ° peel strength of this copper-clad polyimide film was measured and found to be 1.05 kgf Zcm.
- the polyimide precursor solution composition obtained in Reference Example 1 was continuously extruded from a slit of a T-die mold onto a smooth metal support of a drying oven to form a thin film on the support. After heating the thin film at 120 to 160 ° C. for 10 minutes, the support was also peeled off to obtain a self-supporting film.
- the A surface of the self-supporting film Do contact with the support surface on the side), on the B surface (the surface of contact with the support side), 4 mass 0/0 at a concentration of the silane coupling agent (
- a solution of N, N-dimethylacetoamide containing N-phenyl y-aminopropyl trimethoxysilane was applied at 7 g Zm 2 and dried with a hot air at 80 to 120 ° C. Then, both ends in the width direction of the dried film are held and inserted into a continuous heating furnace, and the film is heated and imidized under the condition that the maximum heating temperature in the furnace is about 500 ° C.
- a continuous polyimide film having a width of 34 mm and a width of 524 mm was continuously produced.
- the surface roughness of this polyimide film is measured in an atomic force microscope (AFM) measurement range 5
- a polyimide film was produced in the same manner as in Example 3 except that a N, N-dimethylacetamide solution of a silane coupling agent was not coated on the A side and B side of the self-supporting film, and the surface roughness was measured. Was measured. The results are shown in Table 1.
- the unit of Rms, Ra and Rmax in Table 1 is nm.
- the polyimide film of Example 3 produced by applying the N, N-dimethylacetamide solution of a silane coupling agent to the A side and B side of the self-supporting film is an organic self-supporting film.
- all of Rms, Ra, and Rmax on the A side and the B side were smaller, and the film surface was smoother.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
Claims
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US11/911,081 US8415024B2 (en) | 2005-04-07 | 2006-04-07 | Process for producing polyimide film, and polyimide film |
CN2006800184634A CN101184795B (zh) | 2005-04-07 | 2006-04-07 | 聚酰亚胺膜的制备方法及聚酰亚胺膜 |
JP2007512991A JP5109657B2 (ja) | 2005-04-07 | 2006-04-07 | ポリイミドフィルムの製造方法およびポリイミドフィルム |
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JP (1) | JP5109657B2 (ja) |
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KR101242342B1 (ko) * | 2007-07-27 | 2013-03-11 | 우베 고산 가부시키가이샤 | 폴리이미드 필름 및 배선 기판 |
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JPWO2010116976A1 (ja) * | 2009-04-09 | 2012-10-18 | Jx日鉱日石金属株式会社 | 2層銅張積層板及びその製造方法 |
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JP2015196779A (ja) * | 2014-04-02 | 2015-11-09 | 住友金属鉱山株式会社 | ポリイミドフィルムおよびその製造方法 |
JP2017186466A (ja) * | 2016-04-07 | 2017-10-12 | コニカミノルタ株式会社 | ポリイミドフィルム、その製造方法、及び有機エレクトロルミネッセンス表示装置 |
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US11965110B2 (en) | 2021-01-11 | 2024-04-23 | Nexflex Co., Ltd. | Polyimide varnish composition for flexible substrate and polyimide film using same |
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JP5109657B2 (ja) | 2012-12-26 |
KR100967326B1 (ko) | 2010-07-05 |
US8415024B2 (en) | 2013-04-09 |
CN101184795B (zh) | 2012-03-28 |
US20090297837A1 (en) | 2009-12-03 |
KR20070120553A (ko) | 2007-12-24 |
CN101184795A (zh) | 2008-05-21 |
JPWO2006109753A1 (ja) | 2008-11-20 |
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