WO2016158825A1 - ポリイミドフィルム、ポリイミドワニス、ポリイミドフィルムを用いた製品、及び、積層体 - Google Patents
ポリイミドフィルム、ポリイミドワニス、ポリイミドフィルムを用いた製品、及び、積層体 Download PDFInfo
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- WO2016158825A1 WO2016158825A1 PCT/JP2016/059835 JP2016059835W WO2016158825A1 WO 2016158825 A1 WO2016158825 A1 WO 2016158825A1 JP 2016059835 W JP2016059835 W JP 2016059835W WO 2016158825 A1 WO2016158825 A1 WO 2016158825A1
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- PNADWYBJSASGIY-UHFFFAOYSA-N Cc(cc1)ccc1S(c(cc1)ccc1I)(=O)=O Chemical compound Cc(cc1)ccc1S(c(cc1)ccc1I)(=O)=O PNADWYBJSASGIY-UHFFFAOYSA-N 0.000 description 2
- 0 CC(C)(C)c1ccc(C(C)(C)*)cc1 Chemical compound CC(C)(C)c1ccc(C(C)(C)*)cc1 0.000 description 1
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- 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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- C08J5/18—Manufacture of films or sheets
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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
- 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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- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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Definitions
- the present invention relates to a polyimide film, a polyimide varnish, a product using the polyimide film, and a laminate.
- PET film polyethylene terephthalate film
- COP film cycloolefin film
- the PET film described above has the disadvantage that the optical properties are inferior and the visibility is poor, and the COP film is inferior in toughness.
- polyimide resin has excellent properties such as heat oxidation resistance, heat resistance, heat radiation resistance, low temperature resistance, and chemical resistance. Yes.
- JP 2006-137881 A Japanese translation of PCT publication 2010-510378 JP 2007-246820 A International Publication No. 2012/11820 Pamphlet Japanese Patent No. 4778659 EP 2032632 Specification US Pat. No. 3,666,709
- YI yellow degree
- Patent Document 1 a polyimide film is obtained by adding pyridine as an imidization catalyst and acetic anhydride as a dehydrating agent to a polyimide precursor and drying it, but the polyimide obtained by the residual imidization catalyst There was a problem that coloration and turbidity were likely to remain on the film.
- polyimide resins having an aromatic ring such as polyimide composed of pyromellitic dianhydride and diaminodiphenyl ether, are colored brown or yellow, have low transmittance in the visible light region, and are transparent.
- the retardation of the polyimide film (hereinafter referred to as Rth) is as low as possible.
- Rth the retardation of the polyimide film
- the polyimide film can be used as, for example, a touch panel material or a film substrate for a flexible device, and is desired to be a material having excellent toughness.
- the composition of polyimide for reducing YI and Rth and improving toughness is not disclosed in each patent document or non-patent document.
- polyimide has poor solubility in a solvent due to high aromatic ring density, and it has been difficult to obtain a polyimide film directly from a polyimide solution. Accordingly, a polyimide having a high solubility in a solvent and excellent workability has been desired as the polyimide constituting the polyimide film.
- the present invention has been made in view of the above-mentioned problems, and is a colorless and transparent polyimide film having low YI and Rth and excellent toughness, a polyimide varnish for producing a polyimide film, a product using the polyimide film, And it aims at providing a laminated body.
- Another object of the present invention is to provide a polyimide film that has higher alignment accuracy of elements and the like during device manufacture.
- the polyimide film in the present invention contains a polyimide represented by the following general formula (1), and as A in the general formula (1), a structure represented by the following general formula (A-1) and the following general formula Any one or more of the structures represented by (A-2), the following general formula (A-3), and the following general formula (A-4).
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- X is a divalent organic group selected from the following general formula (X-1) to the following general formula (X-3).
- a is 0 or 1.
- the polyimide film in the present invention contains a polyimide represented by the following general formula (1), and includes a structure represented by the following general formula (A-1) as A in the general formula (1).
- (Rth) is 50 nm or less in terms of a film thickness of 15 ⁇ m, the elongation at break of the film is 10% or more, and the thermal expansion coefficients ⁇ 1 and ⁇ 2 satisfy the following formula (I): And 0.95 ⁇ ⁇ 2 / ⁇ 1 ⁇ 1.05 (I) ⁇ 1 : coefficient of thermal expansion below the glass transition point of the first measurement film ⁇ 2 : coefficient of thermal expansion below the glass transition point of the second measurement film
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- the polyimide varnish in the present invention is a polyimide varnish in which a polyimide represented by the following general formula (1) is dispersed or dissolved in a solvent, and A in the general formula (1) is represented by the following general formula (A-1) And a structure represented by the following general formula (A-5), and a ratio thereof (a structure represented by the general formula (A-1) / a general formula (A-5)) In the range of 2/8 to 6/4 on a molar basis, and B represented by the general formula (1) includes a structure represented by the following general formula (B-5) It is characterized by that.
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- the product according to the present invention is characterized by using the polyimide film described above.
- the laminate in the present invention is characterized by having the polyimide film described above and a transparent electrode layer.
- the polyimide film of the present invention is colorless and transparent, has low YI and Rth, and is excellent in toughness. Moreover, in this invention, it is possible to manufacture the product and laminated body which used the polyimide film provided with the desired characteristic.
- the alignment accuracy of the elements installed on the film can be improved.
- the polyimide film according to the present embodiment contains a polyimide represented by the following general formula (1).
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- the polyimide contained in the polyimide film can be produced from acid dianhydride and diamine as raw materials.
- a in the general formula (1) can be obtained from a diamine.
- a in the general formula (1) a structure represented by the following general formula (A-1) (hereinafter, also referred to as “structure A1”), and a general formula (A-2) Any one of the structures represented by the following general formula (A-3) and the following general formula (A-4) (hereinafter also referred to as “structure A2”) or more (hereinafter, Also called “first polyimide film”).
- X is a divalent organic group selected from the following general formula (X-1) to the following general formula (X-3).
- a is 0 or 1.
- the structure represented by the general formula (A-1) is derived from 3,3′-diaminodiphenylsulfone (hereinafter, also referred to as 3,3′-DDS), and is derived from the general formula (A-2).
- And (X-1) in combination (corresponding to the general formula (A-5)) is 4,4′-diaminodiphenylsulfone (4,4′-DiaminoDiphenyl Sulfone: hereinafter 4
- the structure represented by the combination of the general formula (A-2) and (X-2) derived from 4′-DDS is ⁇ , ⁇ ′-bis (4-aminophenyl) -1,4-diisopropyl
- the structure derived from benzene (hereinafter also referred to as BAPDB) and represented by a combination of the general formula (A-2) and (X-3) is 4,4′-bis (4-aminophenoxybiphenyl)
- the polyimide in the present embodiment includes, as A in the general formula (1), a structure represented by the general formula (A-1) (derived from 3,3′-diaminodiphenylsulfone) as an essential repeating unit, As a repeating unit to be combined with the structure of the general formula (A-1), any one of the structures represented by the general formula (A-2), the general formula (A-3), and the general formula (A-4) Including more than seeds.
- a in the general formula (1) a structure represented by the general formula (A-1) (derived from 3,3′-diaminodiphenylsulfone) as an essential repeating unit, As a repeating unit to be combined with the structure of the general formula (A-1), any one of the structures represented by the general formula (A-2), the general formula (A-3), and the general formula (A-4) Including more than seeds.
- the coloring of polyimide is derived from the formation of a charge transfer complex (CT complex) between polyimide molecules.
- CT complex charge transfer complex
- the structures represented by the general formulas (A-1) to (A-4) are considered to inhibit the formation of a CT complex between polyimide molecules due to bending of the main chain.
- the structures represented by the general formulas (A-1) and (A-5) can weaken the electron donating property of the N atom of the imide group due to the electron withdrawing property of the SO 2 group, and a CT complex is formed. This is particularly preferable.
- absorption of visible light of aromatic polyimide also causes polyimide coloring. It is considered that the alicyclic structures of the general formulas (A-3) and (A-4) can reduce the absorption of visible light as compared with the aromatic polyimide.
- the solubility of a polyimide improves by disordering the orientation of a polyimide.
- the structures represented by the general formulas (A-1) to (A-4) are considered to exhibit solubility because the orientation of the polyimide molecules is disturbed due to the bending of the main chain.
- the structure represented by the general formula (A-1) is excellent in dissolution because the orientation of the polyimide molecules is significantly disturbed by the bent structure of the SO 2 group and the bent structure resulting from the bond at the 3rd and 3 ′ positions. It is thought to express sex.
- the polyimide contained in the polyimide film in the present embodiment includes a structure represented by the general formula (A-1) as A in the general formula (1), a general formula (A-2), and a general formula. (A-3) and any one or more of the structures represented by formula (A-4).
- the inventors have increased the molecular weight of polyimide by copolymerizing the structure represented by the general formula (A-1) and the structure represented by the general formula (A-5).
- the toughness of the resulting film was successfully improved specifically.
- at least one selected from the structures represented by the general formulas (A-2), (A-3) and (A-4) has at least the structure represented by the general formula (A-1).
- the same effect is exhibited with polyimide having a structure of more than one species.
- the structural unit represented by the general formula (A-1) can be obtained from the 3,3′-DDS component.
- the structure represented by the general formula (A-1) is a site for expressing solubility in a solvent.
- the structural unit represented by the general formula (A-5) can be obtained from 4,4'-DDS.
- the structure represented by the general formula (A-5) has a glass transition temperature (Tg) in a polyimide film obtained by heating and drying a varnish (resin composition) obtained by dissolving the polyimide of this embodiment in a solvent. Is a site for expressing the temperature in the range of 250 to 350 ° C.
- the structural unit represented by the general formula (A-1) is preferably introduced from the viewpoint of the solubility of the polyimide.
- the structural unit represented by the general formula (A-5) is prepared from the viewpoint of a high glass transition temperature (Tg).
- Tg glass transition temperature
- the structure represented by the general formula (A-1) and the general formula (A-5) have a structure in which the SO 2 group is bent, and the bent structure is fixed because of the sp2 orbit. Therefore, it is considered that the structure represented by the general formula (A-1) and the aromatic group contained in the general formula (A-5) do not line up in one direction and exist randomly.
- the composition ratio (structure A1 / structure A2) between the structure A1 and the structure A2 is 2/8 to 8/2 in terms of molar ratio from the viewpoint of further improving the toughness of the polyimide film. preferable.
- the structure A2 has the structure represented by the general formula (A-5)
- the structure A1 and the structure represented by the general formula (A-5) (hereinafter also referred to as “structure A21”)
- the composition ratio (Structure A1 / Structure A21) is preferably in the range of 2/8 to 6/4, more preferably in the range of 3/7 to 4/6. That is, the structure A1 is preferably 20% by mole or more and 60% or less when the total amount of A in the general formula (1) is 100% by mole.
- the structure A21 is preferably 40 mol% or more and 80% mol% or less when the total amount of A in the general formula (1) is 100 mol%.
- the composition ratio of structure A1 to structure A22 is preferably 5/5 to 8/2 in terms of molar ratio.
- the general formula (A-1) and the general formula (A) are within the range in which the desired elongation at break can be expressed, and more preferably within the range in which the target glass transition temperature (Tg) can be expressed.
- Tg target glass transition temperature
- a small amount of structural units other than the structural unit represented by -5) can be contained. That is, the polyimide according to the present embodiment may include a structural unit derived from a diamine component other than 4,4′-DDS and 3,3′-DDS as long as the performance is not impaired. For example, an aromatic diamine having 6 to 30 carbon atoms can be mentioned as a preferred embodiment.
- TFMB 2,2′-bis (trifluoromethyl) benzidine
- 1,4-diaminobenzene 1,4-diaminobenzene
- 4-aminobenzenesulfonic acid-4-aminophenyl ester 4-aminobenzenesulfonic acid-3- Aminophenyl ester, 3-aminobenzenesulfonic acid-3-aminophenyl ester
- 2-aminobenzenesulfonic acid-2-aminophenyl ester 2,2'-dimethyl 4,4'-diaminobiphenyl
- 1,3-diaminobenzene 4-aminophenyl 4′-aminobenzoate, 4,4′-diaminobenzoate, 4,4 ′-(or 3,4′-, 3,3′-, 2,4 ′-) diaminodiphenyl ether, 4,4 '-(Or 3,3'-) diaminodiphenyl sul
- 9,9-bis (4-aminophenyl) fluorene and 9,9-bis (4-aminophenoxyphenyl) fluorene can be introduced when adjusting Rth because the fluorene skeleton has a negative intrinsic birefringence. it can.
- the introduction of can suppress the formation of a CT complex between polyimide molecules, and can be introduced to reduce the YI of the film.
- TFMB 2,2'-bis (trifluoromethyl) benzidine
- B in the general formula (1) will be described.
- the structural unit can be obtained from an acid dianhydride.
- the structural unit derived from the acid dianhydride component contained in the polyimide may be the same molecule or a molecule having a different structure.
- the structural unit represented by B is preferably a structural unit represented by general formula (B-1) to general formula (B-4).
- B in the general formula (1) includes at least one of the structures represented by the following general formula (B-1) to the following general formula (B-4).
- Y is any one of structures selected from the following general formula (Y-1) to the following general formula (Y-3).
- a structure represented by a combination of general formulas (B-1) and (Y-1) (corresponding to the structure of general formula (B-5)) is 4,4′-oxydiphthalic dianhydride (hereinafter, The structure represented by the combination of the general formula (B-1) and the general formula (Y-2) derived from ODPA is 4,4 ′-(hexafluoroisopropylidene) diphthalic dianhydride (hereinafter, referred to as “ODPA”).
- ODPA 4,4 ′-(hexafluoroisopropylidene) diphthalic dianhydride
- the structure represented by the combination of the general formula (B-1) and the general formula (Y-3) is derived from 9,9-diphenylfluorenic dianhydride (hereinafter also referred to as DPFLDA),
- the structure represented by the general formula (B-2) is derived from hydroxypyromellitic dianhydride (hereinafter also referred to as HPMDA), and the structure represented by the general formula (B-3) is bicyclo [2,2, 2] Oct-7-ene-2,3,5,6-tetracarboxylic
- the structure represented by the general formula (B-4) derived from dianhydride (hereinafter also referred to as BODA) is 1,3,3a, 4,5,9b-hexahydro-5- (tetrahydro-2,5-dioxo -3-furanyl) naphtho [1,2-c] furan-1,3-dione (hereinafter also referred to as TDA).
- DPFLDA can be introduced when adjusting Rth because the fluorene skeleton has a negative intrinsic birefringence.
- the polyimide according to the present embodiment has a configuration derived from an acid dianhydride component other than the structural unit represented by the general formula (B-1) to the general formula (B-4) as long as the performance is not impaired. Units may be included.
- aromatic tetracarboxylic dianhydride having 8 to 36 carbon atoms aliphatic tetracarboxylic dianhydride having 6 to 50 carbon atoms, and alicyclic tetracarboxylic dianhydride having 6 to 36 carbon atoms It is preferable that it is a compound selected from these.
- the number of carbons herein includes the number of carbons contained in the carboxyl group.
- Examples of the aliphatic tetracarboxylic dianhydride having 6 to 50 carbon atoms include ethylene tetracarboxylic dianhydride and 1,2,3,4-butanetetracarboxylic dianhydride.
- Examples of alicyclic tetracarboxylic dianhydrides having 6 to 36 carbon atoms include 1,2,3,4-cyclobutanetetracarboxylic dianhydride (hereinafter also referred to as CBDA), cyclopentanetetracarboxylic dianhydride, Cyclohexane-1,2,3,4-tetracarboxylic dianhydride, 3,3 ′, 4,4′-bicyclohexyltetracarboxylic dianhydride, carbonyl-4,4′-bis (cyclohexane-1,2 -Dicarboxylic acid) dianhydride, methylene-4,4'-bis (cyclohexane-1,2-dicarboxylic acid) dianhydride, 1,2-ethylene-4,4'-bis (cyclohexane-1,2-dicarboxylic acid) Acid) dianhydride, 1,1′-ethylidene-4,4′-bis (cyclohexane-1,2-dicar
- the general formula (Y-1) and the general formula (Y-2) are the solubility of the polyimide in the solvent, and the yellowness and retardation (Rth) of the polyimide film. It is preferable from the viewpoint of reduction.
- the general formula (Y-3) has negative intrinsic birefringence, a reduction in yellowness and retardation (Rth) when a polyimide film is formed, a reduction in coefficient of thermal expansion (CTE), And it is preferable from a viewpoint of an improvement of a glass transition temperature (Tg).
- the general formulas (B-2) to (B-4) are preferable from the viewpoints of solubility of polyimide in a solvent and reduction in yellowness when a polyimide film is formed.
- the component including a structure represented by the following general formula (B-5) is particularly preferable to use as a component.
- the general formula (B-5) is preferably 50 mol% or more, more preferably 80 mol% or more, and may be 100 mol% with respect to the entire acid dianhydride.
- the polyimide according to the present embodiment mainly includes a unit 1 represented by the following general formula (5) and a unit 2 represented by the following general formula (6).
- the content of units other than unit 1 and unit 2 is preferably less than the content of unit 1 and unit 2.
- These units may be bonded alternately or in a permutation in the polymer chain, and these units may be bonded at random.
- the weight average molecular weight (Mw) of the polyimide is preferably 10,000 or more, more preferably 25,000 or more, and 30,000 from the viewpoint of obtaining a high elongation at break and low Rth in the polyimide film.
- the above is particularly preferable.
- the weight average molecular weight (Mw) of a polyimide is 1,000,000 or less, It is more preferable that it is 500,000 or less, It is especially preferable that it is 250,000 or less.
- the weight average molecular weight is 1,000,000 or less, the solubility in a solvent is good, and the film can be applied without bleeding at a desired film thickness during processing such as coating to obtain a low Rth film. Can do.
- the weight average molecular weight is preferably 30,000 or more.
- the weight average molecular weight refers to a molecular weight measured by gel permeation chromatography using polystyrene having a known number average molecular weight as a standard.
- the polyimide varnish in the present embodiment is used as a varnish (resin composition) obtained by dissolving it in a solvent, for example, as a raw material for producing a film or a film. Therefore, the polyimide varnish in the present embodiment is a polyimide varnish obtained by dispersing or dissolving the polyimide represented by the general formula (1) in a solvent.
- a in the general formula (1) includes a structure represented by the general formula (A-1) and a structure represented by the general formula (A-5), and these composition ratios (the above general formula ( The structural unit represented by A-1) / the structural unit represented by the general formula (A-5)) is in the range of 2/8 to 6/4 in molar ratio.
- B represented by the general formula (1) includes a structure represented by the following general formula (B-5).
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- the polyimide in the present embodiment is excellent in solubility in a solvent. Therefore, by using the polyimide of this embodiment, a varnish having desired characteristics can be obtained by a simple process. According to the polyimide varnish of the present embodiment, since the polyimide is appropriately dissolved, when the varnish is applied on the application surface, a film having excellent smoothness can be formed without becoming a lump. For this reason, while being able to form the resin layer of uniform thickness, high toughness can be obtained.
- the polyimide varnish is prepared by dissolving the acid dianhydride component and the diamine component in a solvent, for example, an organic solvent, adding an azeotropic solvent such as toluene, and removing water generated during imidization out of the system. By removing it, it can be produced as a polyimide solution containing polyimide and a solvent (also called polyimide varnish).
- a solvent for example, an organic solvent
- an azeotropic solvent such as toluene
- the reaction conditions are not particularly limited.
- the reaction temperature is 0 ° C. to 180 ° C.
- the reaction time is 3 to 72 hours.
- an inert atmosphere such as argon or nitrogen is preferable during the reaction.
- the solvent is not particularly limited as long as it is a solvent that dissolves polyimide.
- Known reaction solvents include phenol solvents such as m-cresol, amide solvents such as N-methyl-2-pyrrolidone (NMP), N, N-dimethylformamide (DMF), N, N-dimethylacetamide ( DMAc), for example, ⁇ -butyrolactone (GBL), ⁇ -valerolactone, ⁇ -caprolactone, ⁇ -crotonolactone, ⁇ -hexanolactone, ⁇ -methyl- ⁇ -butyrolactone, ⁇ -valerolactone, ⁇ -acetyl- ⁇ -butyrolactone, ⁇ -hexanolactone, sulfoxide solvents such as N, N-dimethyl sulfoxide (DMSO), ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone
- An additive may be appropriately added to the polyimide varnish in the present embodiment.
- a substance exhibiting a negative birefringence may be added in order to adjust the Rth of the film.
- examples thereof include inorganic particles such as strontium carbonate and organic compounds such as polystyrene, polyvinyl naphthalene, polymethyl methacrylate, cellulose triacetate, and fluorene derivatives.
- additives include leveling agents for improving film coatability, dispersants and surfactants, surfactants for adjusting release properties and adhesion from film supports, and adhesion aids.
- Agents flame retardants for imparting flame retardancy to films, and the like.
- antioxidants for example, antioxidants, UV inhibitors, light stabilizers, plasticizers, waxes, fillers, pigments, dyes, foaming agents, antifoaming agents, dehydrating agents, antistatic agents, antibacterial agents, antifungal agents, etc. Is mentioned.
- the additive added to the polyimide varnish may be contained in the film as it is.
- FIG. 1 is a schematic cross-sectional view showing a polyimide film according to the present embodiment.
- the polyimide film 10 according to the present embodiment has, for example, a structure in which a resin composition layer 12 is formed on the surface of a support 11.
- the support 11 may not be provided.
- a support film self-supporting film
- the supporting film means a film having a breaking elongation of 5% or more.
- the peeled film has a breaking elongation of 5% or more, it corresponds to a supportable film.
- the measuring method of breaking elongation can use the method as described later (Evaluation of breaking elongation and breaking strength).
- the resin composition layer 12 constituting the polyimide film 10 is formed by forming a polyimide varnish (resin composition) containing polyimide and a solvent on the surface of the support 11 by coating or the like, and then heating the polyimide varnish. It can be obtained by evaporating the solvent. More specifically, as described above, a polyimide solution obtained by dissolving and reacting an acid dianhydride component and a diamine component in an organic solvent can be formed on the support 11.
- a polyimide varnish (resin composition) is formed on the surface of the support 11 by coating or the like, temporarily dried until the film is not sticky, and then peeled off from the support 11 and further heated. It can also be obtained by evaporating the solvent. In this case, even if there is no support 11, it becomes a supportable film (self-supporting film).
- the support 11 may be, for example, an alkali glass substrate, an alkali-free glass substrate (Eagle XG (registered trademark), manufactured by Corning), a metal substrate such as a copper substrate, an aluminum substrate, or a SUS substrate, or Upilex (registered).
- (Trademark) film manufactured by Ube Industries
- Kapton registered trademark
- polycarbonate film metal film such as copper foil, aluminum foil, SUS foil, etc.
- heating and drying of the polyimide varnish can be performed without the support 11, and the type of the support 11 is not particularly limited.
- the substrate is basically a structure that is highly rigid and unsuitable for bending, and the film or the film substrate is flexible and can be bent.
- the solubility of the polyimide in the solvent is good, and even if the polyimide varnish is applied on the support, temporarily dried, and the support is removed, the polyimide film can maintain its self-supporting property. . Therefore, the polyimide film after temporary drying is heated in a free state not supported by the support, and a polyimide film having a solvent content of 3% by mass or less can be obtained in a state where the orientation of the polymer is small.
- the solvent By applying a temperature of 150 to 350 ° C. to the polyimide varnish in an inert gas atmosphere, the solvent can be removed to form the polyimide film 10, but drying can also be performed in an air atmosphere. Yes, it is not particularly limited.
- the solvent is, for example, m-cresol, NMP, DMF, DMAc, GBL, DMSO, acetone, diethyl acetate, etc.
- GBL a solvent
- the solvent is almost removed by heating and drying on the polyimide varnish as described above
- the content of GBL in the polyimide film from the viewpoint of not damaging the desired physical properties, such as being able to obtain the desired YI, Rth, and toughness Is preferably smaller than 3% by mass, more preferably smaller than 1% by mass, and still more preferably 0.5% by mass or less.
- at least about 0.01% by mass of GBL is left as the remaining amount.
- examples of the method for forming the polyimide varnish include known coating methods such as spin coating, slit coating, slot die coating, and blade coating.
- the polyimide film in the present embodiment has excellent toughness.
- breaking elongation and breaking strength are measured as indices of toughness.
- the structure is represented by the general formula (A-1) and the general formula (A-5).
- the molecular weight of the polyimide is lowered and the toughness of the film is lowered only from the 4,4′-DDS component (structure represented by the general formula (A-5)) derived from the diamine component.
- the present embodiment is an isomer derived from the 4,4′-DDS component, and derived from the 3,3′-DDS component having a structure in which the monomer skeleton is bent as viewed from the 4,4′-DDS component (
- the amount derived from the 3,3′-DDS component is less than the amount derived from the 4,4′-DDS component.
- the toughness can be improved while increasing the molecular weight.
- the yellowness (YI) of the polyimide film according to the present embodiment can be set to 5.0 or less.
- the film thickness of the polyimide film is preferably in the range of 0.1 ⁇ m to 30 ⁇ m, and more preferably in the range of 1 ⁇ m to 20 ⁇ m.
- a film substrate for a flexible device When used for a film substrate for a flexible device, it is preferably in the range of 1 ⁇ m to 10 ⁇ m, more preferably in the range of 1 ⁇ m to 5 ⁇ m, from the viewpoint of improving bending resistance by thinning the device.
- a film having a thickness of less than 10 ⁇ m can be prepared by, for example, stretching a polyimide film having a thickness of 10 ⁇ m or more.
- a polyimide varnish is applied on the support, and even if the support is removed, temporary drying is performed until the polyimide film can have a self-supporting property.
- the above-described PET film polyimide film such as Kapton (registered trademark of Toray DuPont), Upilex (registered trademark of Ube Industries), metal foil, or the like can be used.
- the amount of the solvent remaining in the film is preferably 10 to 20% by mass from the viewpoints of the film self-supporting property and stretchability.
- the temporarily dried polyimide film can be prepared by stretching 1.5 to 5 times by biaxial stretching while heating at 150 ° C. to 250 ° C. with the support attached or peeled from the support. it can.
- the stretching may be simultaneous biaxial stretching or sequential biaxial stretching, but simultaneous biaxial stretching is preferred from the viewpoint of low Rth of the film.
- the temporarily dried polyimide film after stretching is then subjected to main drying and dried until the residual solvent becomes 3% by mass or less.
- the yellowness (YI) can be adjusted to 2.0 or less.
- it can suppress to low yellowness, ie, a colorless and transparent polyimide film can be obtained.
- colorless and transparent in the present embodiment refers to a state in which the total light transmittance of the film is 80% or more, the haze is 2 or less, and the yellowness (YI) is 5.0 or less. Therefore, the polyimide film of this Embodiment can be used suitably for the use of a touch panel or a display.
- a touch panel element is produced on at least one of the upper and lower surfaces of the substrate film, and the surface of the substrate film or the substrate film Even when the side facing the surface is a viewing surface, it does not adversely affect the color and brightness of the screen.
- the retardation (Rth) of the polyimide film according to the embodiment of the present invention can be set to 100 nm or less, preferably 50 nm or less, and more preferably 20 nm or less in terms of a converted value with a film thickness of 15 ⁇ m.
- Rth may be negative but is preferably greater than ⁇ 5 nm.
- the acid dianhydride and diamine skeleton used in general high heat-resistant polyimide resins have high flatness and aromatic ring density, and are coated on a glass substrate and dried. It is generally known that the orientation of the polyimide chain with respect to the two-dimensional plane direction occurs, the anisotropy is observed in the in-plane direction and the out-of-plane refractive index, and the retardation (Rth) increases.
- a method for reducing the anisotropy of the refractive index a method of suppressing the molecular orientation during drying by introducing a bent structure, or a method of diluting the concentration of an aromatic ring having a high electron density is known. .
- Patent Document 4 there is a method of obtaining a colorless and transparent film having a small anisotropy by using a polyimide into which a bending group such as 4,4′-diaminodiphenylsulfone is introduced as a diamine.
- a polyimide into which a bending group such as 4,4′-diaminodiphenylsulfone is introduced as a diamine.
- a method of forming a polyimide film via a polyamic acid film prepared from a polyamic acid solution which is a precursor soluble in a solvent It was general. At this time, the polyamic acid film was inferior in strength, and it was difficult to make a self-supporting film, so that there was a problem that handling properties deteriorated.
- the polyimide film in the present embodiment can be a self-supporting film having low yellowness and retardation (Rth) and excellent toughness.
- the polyimide film of this Embodiment can be used with sufficient handling property, for example as a use of a touch panel or a display.
- the retardation (Rth) can be lowered, for example, when the polyimide resin according to the present embodiment is used as a substrate film of a transparent electrode film, a touch panel element is produced on at least one of the upper and lower surfaces of the substrate film and visually recognized. Even if it is a surface, it does not adversely affect the rainbow unevenness of the screen.
- the structure represented by the general formula (A-1) and the general formula (A-5) have a structure in which the SO 2 group is bent, and the bent structure is fixed because of the sp2 orbit. . Therefore, it is considered that the structure represented by the general formula (A-1) and the aromatic group contained in the general formula (A-5) do not line up in one direction and exist randomly. That is, if the structure represented by the general formula (A-1) and the general formula (A-5) are present in the polyimide skeleton, the difference in refractive index between the in-plane direction and the out-of-plane direction is small, and Rth can be reduced. .
- the polyimide film of this embodiment can be used as a substitute for glass in the same way as PET film and COP film. Furthermore, since the polyimide film of this embodiment is excellent in toughness, it can be used as a foldable display or curved surface. It can be used for a display body following the above.
- FIG. 2 is a schematic cross-sectional view showing the laminate according to the present embodiment.
- the laminate 20 according to the present embodiment is provided with a transparent electrode layer 21 on the surface of the polyimide film 10.
- the laminate 20 according to the present embodiment can be obtained by forming the transparent electrode layer 21 on the surface of the polyimide film 10 with a sputtering apparatus.
- the polyimide film 10 has a laminated structure of the support 11 and the resin composition layer 12, but may be a single layer of the resin composition layer 12.
- the laminate according to the present embodiment may have transparent electrode layers on both sides of the polyimide film. At this time, it is preferable to have at least one or more transparent electrode layers 21 on both surfaces.
- an undercoat layer for imparting smoothness, a hard coat layer for imparting surface hardness, an index matching layer for improving visibility, and a gas barrier property Other layers such as a gas barrier layer may be included.
- the hard coat layer for imparting surface hardness and the index matching layer for improving visibility may be laminated on the transparent electrode layer and the polyimide film.
- the polyimide film 10 manufactured using the polyimide according to this embodiment is colorless and transparent, has a low yellowness (YI), and is excellent in toughness. Furthermore, preferably, since the retardation (Rth) is small and the glass transition temperature (Tg) is suitable for the transparent electrode manufacturing process, the laminate 20 of the present embodiment is applied to a touch panel material such as a transparent electrode film. Suitable for use.
- the film forming step of the transparent electrode layer 21 on the surface of the polyimide film 10 is performed in a low temperature range of, for example, 80 to 100 ° C. It is preferable to perform sputtering at a higher temperature to form the transparent electrode layer 21 having a low specific resistance.
- the transparent electrode layer 21 can be formed on both surfaces of the polyimide film 10. Thereby, for example, touch panel elements can be arranged on both sides.
- the temperature at which the transparent electrode layer 21 is formed is high in the glass transition temperature (Tg) of the polyimide film 10 constituting the film formation surface, problems such as shrinkage and breakage of the polyimide film occur in a high temperature region.
- Tg glass transition temperature
- the polyimide film 10 according to the present embodiment has a high glass transition temperature (Tg) of about 250 ° C. or higher (based on a film thickness of 15 ⁇ m) and is excellent in heat resistance.
- the transparent electrode layer 21 having a low specific resistance can be formed by sputtering the surface of the polyimide film 10 of the present embodiment, for example, at about 150 to 250 ° C.
- the polyimide according to the present embodiment preferably has a breaking strength of 100 MPa or more on the basis of the thickness of 15 ⁇ m of the polyimide film from the viewpoint of improving the yield when forming the transparent electrode layer 21.
- the polyimide film according to the present embodiment has a glass transition temperature (Tg) of 250 ° C. or more based on the film thickness of 15 ⁇ m as described above. Is preferred.
- the polyimide film of the present embodiment contains a polyimide represented by the following general formula (1), and includes a structure represented by the following general formula (A-1) as A in the general formula (1) ( Hereinafter, also referred to as “second polyimide film”).
- a film including the structure represented by the general formula (A-1) is preferable because the polymer tends to exist isotropically in the in-plane direction and the out-of-plane direction.
- a in the general formula (1) is a structure represented by the following general formula (A-1)
- the total amount of A in the general formula (1) is 100 mol%. It is preferable that it is more than mol% and 80% or less.
- A is a divalent organic group
- B is a tetravalent organic group
- n is 2 or more.
- the polyimide film of the present embodiment may have a structure other than the structure represented by the general formula (A-1).
- the structural unit described in the above-mentioned ⁇ Polyimide> section can be mentioned.
- the diamine component in the chapter ⁇ A> in the general formula (1) and the acid dianhydride component in the ⁇ B> in the general formula (1) described above are used. Those listed can be used.
- the polyimide film of this embodiment has a retardation (Rth) of 50 nm or less in terms of a converted value with a film thickness of 15 ⁇ m.
- the polyimide film of the present embodiment has a breaking elongation of 10% or more and thermal expansion coefficients ⁇ 1 and ⁇ 2 satisfy the following formula (I). 0.95 ⁇ ⁇ 2 / ⁇ 1 ⁇ 1.05 (I) ⁇ 1 : coefficient of thermal expansion below the glass transition point of the first measurement film ⁇ 2 : coefficient of thermal expansion below the glass transition point of the second measurement film
- ⁇ 1 and ⁇ 2 can be defined by carrying out a thermal cycle test using TMA (Thermo Mechanical Analysis) as follows.
- the glass transition point of the film is determined by the following measurement.
- TMA is measured in the range of 50 ° C. to 350 ° C. with a film width of 3 mm, a film length of 20 mm, a heating rate of 10 ° C./min, a tensile load of 49 mN.
- the inflection point of the thermal expansion coefficient in the range of 50 ° C. to 350 ° C. of the measured TMA chart is defined as the glass transition point.
- the measurement range of the thermal cycle is 50 ° C. to 200 ° C.
- the thermal expansion coefficient is a value of 100 ° C. to 150 ° C. in the temperature raising step.
- the thermal expansion coefficient of the heating step of the first cycle in the measurement and alpha 1 the thermal expansion coefficient of the second cycle of the heating process and alpha 2.
- the measurement range of the thermal cycle is 50 ° C. to 250 ° C.
- the thermal expansion coefficient is a value of 100 ° C. to 200 ° C. in the temperature raising step.
- the thermal expansion coefficient of the heating step of the first cycle in the measurement and alpha 1 the thermal expansion coefficient of the second cycle of the heating process and alpha 2.
- the measurement range of the thermal cycle is 50 ° C. to 300 ° C.
- the thermal expansion coefficient is a value of 100 ° C. to 250 ° C. in the temperature raising step.
- the thermal expansion coefficient of the heating step of the first cycle in the measurement and alpha 1 the thermal expansion coefficient of the second cycle of the heating process and alpha 2.
- the measurement range of the thermal cycle is 50 ° C. to 350 ° C.
- the thermal expansion coefficient is 100 ° C. to 300 ° C. Value.
- the film width is 3 mm
- the film length is 20 mm
- the temperature rising rate of TMA is 10 ° C./min
- the temperature falling rate is 10 ° C./min
- the tensile load is 49 mN.
- Nx and Ny indicate the planar direction
- Nz indicates the refractive index in the thickness direction
- d indicates the thickness (nm) of the sample.
- the retardation (Rth) of the polyimide film according to the present embodiment is a converted value with a film thickness of 15 ⁇ m, and is 50 nm or less, more preferably 20 nm or less. Rth may be negative but is preferably greater than ⁇ 5 nm.
- Low Rth means that the refractive index has little anisotropy.
- the polyimide film according to the present embodiment is used as a substrate film of a display element, it is preferable because of excellent screen visibility. . Specifically, for example, reduction of rainbow unevenness when viewed through polarized sunglasses.
- the low Rth is due to the low anisotropy of the electron density in the film, suggesting that the polymer isotropically exists in the in-plane direction and out-of-plane direction of the film. Since the orientation of the polymer is low, the film has no directionality and is considered to exhibit isotropic properties not only in optical properties but also in mechanical properties (such as elastic modulus and thermal expansion coefficient). If the elastic modulus of the film and the expansion and contraction due to heat are isotropic, the deformation of the film upon application of force or heat in the device manufacturing process is isotropic, so that the positioning accuracy is considered to be improved.
- the elongation at break of the film is 10% or more from the viewpoint of improvement in workability when it is a self-supporting film and bending resistance when it is used as a film substrate of a flexible device.
- strain remaining in the film can be estimated from the thermal expansion coefficient alpha 1, alpha 2 was measured by the following method for example, this time, the thermal expansion coefficient alpha 1 was measured, alpha 2 satisfy the above formula (I) Is preferred.
- the thermal expansion coefficients ⁇ 1 and ⁇ 2 satisfy the formula (I) indicates that there is little distortion remaining in the film. It is preferable that the thermal expansion coefficients ⁇ 1 and ⁇ 2 satisfy the formula (I) from the viewpoint that the generation of wrinkles on the film is small even during the heating process. In addition, if the film has a small residual strain, even if the film is temporarily deformed when heat is applied in the device manufacturing process, the film returns to its original shape with high accuracy after cooling, so that the positioning accuracy is considered to be improved.
- the polyimide film of this embodiment can improve the positioning accuracy of elements and the like mounted on the film. That is, for example, when the element is mounted on the film while feeding out the polyimide film of the present embodiment with a roll-to-roll, the film is not torn even in a heating environment, so that the film is not broken. Since the isotropic and recoverability of deformation is excellent, the element can be mounted on the film with high positioning accuracy.
- production method 1 As a first production method, there is a production method in which a polyimide precursor solution is cast on a support and then heated, dried and imidized to form a polyimide film (referred to as production method 1).
- production method 2-1 there is a production method in which a polyimide solution (polyimide varnish) is cast on a support and dried to form a polyimide film (referred to as production method 2-1).
- the second manufacturing method forms a film from a polyimide solution that has been imidized in advance, after the temporary drying, it can be peeled off from the support and dried to form a polyimide film. 2-2).
- the production method of the first polyimide film is not particularly limited, and a conventionally known production method of polyimide film can be applied.
- the first production method (Production method 1) or the second production method (Production method 2-1 and Production method 2-2) can be applied, but the second production method without an imidization step after casting is preferred.
- the second production method (Production method 2-1 and Production method 2-2) is preferable in order to obtain a low Rth.
- the film is peeled off from the support and dried.
- Production method 2-2 is preferred. The production method 2-2 will be described below.
- a polyimide varnish can be apply
- a support body since it forms into a film from the polyimide solution imidized previously, after performing temporary drying, a support body can be removed and a self-supporting film of polyimide can be obtained. Therefore, by heating the temporarily dried polyimide film in a free state not supported by the support, a polyimide film can be obtained in a state where the orientation of the polymer is small, and the converted value with a film thickness of 15 ⁇ m is 50 nm or less. The low Rth can be realized. Moreover, the elongation at break of the film can be 10% or more. In addition, the residual strain of the polyimide film can be reduced, and the above-mentioned ratio of thermal expansion coefficient ( ⁇ 2 / ⁇ 1 ) can be kept in the range of 0.95 to 1.05.
- the residual strain of the polyimide film tends to increase due to strain due to a difference in expansion from the support.
- the polyamic acid film is inferior in strength to the polyimide film imidized from the polyamic acid film which is a polyimide precursor, a support is necessary and it is difficult to obtain a self-supporting film after temporary drying.
- the residual distortion of the polyimide film tends to increase.
- the polyimide film of the present embodiment can be used as a substitute for glass in the same manner as PET film and COP film. As described above, the polyimide film of this embodiment can achieve a low Rth. In addition, since the film has high elongation, even if the polyimide film of the present embodiment is used for a foldable display body or a display body that follows a curved surface, the film is not damaged and is easy to use.
- the polyimide film and the laminate in the present embodiment can be used as a substrate film such as a surface protective film, a color filter, and a TFT, and an insulating protective film.
- These polyimide films and laminates include, for example, displays with touch panel functions, organic EL lighting, flexible displays, smartphones, tablet terminals, foldable smartphones and tablet terminals, other flexible devices, organic EL lighting with curved surfaces, It can be suitably used for products such as organic EL displays.
- a flexible device means a flexible display, a flexible solar cell, a flexible touch panel, flexible lighting, a flexible battery etc., for example.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) were measured by gel permeation chromatography (GPC) under the following conditions.
- GPC gel permeation chromatography
- N N-dimethylformamide
- 24.8 mol / L lithium bromide monohydrate manufactured by Wako Pure Chemical Industries, Ltd.
- the dried sample length was 3 ⁇ 50 mm, and the polyimide film was pulled at a speed of 100 mm / min using a tensile tester (manufactured by A & D Co., Ltd .: RTG-1210), and the breaking elongation and breaking strength were measured.
- the yellowness (YI), total light transmittance evaluation The yellowness (YI value) and total light transmittance of the polyimide film were measured using a D65 light source manufactured by Nippon Denshoku Industries Co., Ltd. (Spectrophotometer: SE600). Unless otherwise specified, measurement was performed on a film having a thickness of 15 ⁇ 1 ⁇ m as a sample.
- the glass transition temperature (Tg) and linear expansion coefficient (CTE) in the temperature range of 50 to 350 ° C. were measured by thermomechanical analysis using a polyimide film cut to a size of 3 mm ⁇ 20 mm as a test piece. .
- a test piece in a temperature range of 50 to 350 ° C. using Seiko Instruments Inc. (EXSTAR 6000) as a measuring device under conditions of a tensile load of 49 mN, a heating rate of 10 ° C./min, and a nitrogen stream (flow rate of 100 ml / min). The elongation was measured.
- the inflection point of the obtained chart was determined as the glass transition temperature, and the linear expansion coefficient (CTE) of the polyimide film at 100 to 200 ° C. was determined.
- the measurement range of the thermal cycle was 50 ° C. to 200 ° C.
- the thermal expansion coefficient was a value of 100 ° C. to 150 ° C. in the temperature raising step.
- the thermal expansion coefficient in the temperature raising step in the first cycle was ⁇ 1
- the thermal expansion coefficient in the temperature raising step in the second cycle was ⁇ 2 .
- the measurement range of the thermal cycle was 50 ° C. to 250 ° C.
- the thermal expansion coefficient was a value of 100 ° C. to 200 ° C. in the temperature raising step.
- the thermal expansion coefficient in the temperature raising step in the first cycle was ⁇ 1
- the thermal expansion coefficient in the temperature raising step in the second cycle was ⁇ 2 .
- the measurement range of the thermal cycle was 50 ° C. to 300 ° C.
- the thermal expansion coefficient was a value of 100 ° C. to 250 ° C. in the temperature raising step.
- the thermal expansion coefficient in the temperature raising step in the first cycle was ⁇ 1
- the thermal expansion coefficient in the temperature raising step in the second cycle was ⁇ 2 .
- the measurement range of the thermal cycle is 50 ° C. to 350 ° C.
- the thermal expansion coefficient is 100 ° C. to 300 ° C. Value.
- Evaluation criteria were as ⁇ when alpha 1 / alpha 2 ratio is ⁇ a range of 0.95 to 1.05, greater than 0.95 or less than 1.05.
- L 1 and L 2 were measured in a clean room at 25 ° C. and 50% RH.
- the heat treatment was carried out in a hot air drying oven at 200 ° C. for 10 minutes with the four sides of the film held at a force of 1 kg / m and cooled to room temperature.
- the evaluation criteria were ⁇ when ⁇ was 20 ⁇ m or less, ⁇ when within 20 to 40 ⁇ m, and ⁇ when 40 ⁇ m or more. Next, the manufacturing conditions will be specifically described.
- Example 1-1 While introducing nitrogen gas into a 500 mL separable flask equipped with a stirring bar and having a Dean-Stark tube and a reflux tube at the top, 13.4 g (55.44 mmol) of 4,4′-DDS and 3.44 g of 3,3′-DDS ( 13.86 mmol) and 50.00 g of NMP were added. Then, 21.71 g (70.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 22.28 g of NMP and 26.02 g of toluene were added at room temperature, and the temperature was raised to 160 ° C. The mixture was heated to reflux for 1 hour to perform imidization.
- ODPA 4,4′-oxydiphthalic anhydride
- polyimide varnish a polyimide NMP solution (hereinafter also referred to as polyimide varnish).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 below shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-2-1 To a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, while introducing nitrogen gas, 12.4 g (48.51 mmol) of 4,4′-DDS and 3,3′-DDS 5.16 g (20.79 mmol) and GBL 50.00 g were added. Then, 21.71 g (70.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 22.28 g of GBL and 26.02 g of toluene were added at room temperature, and the temperature was raised to an internal temperature of 160 ° C. The mixture was heated to reflux for 1 hour to perform imidization.
- ODPA 4,4′-oxydiphthalic anhydride
- polyimide varnish a polyimide GBL solution
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Example 1-2-2 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- Table 2 shows the test results of the polyimide film which was peeled from the Upilex film as the support and dried for 20 minutes at 250 ° C. in a state of being fixed to the SUS metal frame with Kapton tape.
- Example 1-2-3 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- Table 2 shows the test results of polyimide films obtained by peeling the resin composition layer from the Upilex film as a support and drying it in an IR drying furnace at an IR temperature of 270 ° C. for 10 minutes.
- Example 1-2-4 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- the resin composition layer is peeled off from the Upilex film as a support, and the film surface is 270 ° C. at an IR temperature in an IR drying furnace while applying a tension of 4 kg / m uniaxially to the film.
- Table 2 The test results of the polyimide film dried for 10 minutes are shown in Table 2 below.
- Example 1-3-1 Except for changing 4,4′-DDS to 10.32 g (41.58 mmol) and 3,3′-DDS to 6.90 g (27.72 mmol) and setting the reaction time at 180 ° C. to 7 hours, A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-3-2 A polyimide varnish was obtained in the same manner as in Example 1-3-1, except that the reaction time at 180 ° C. was changed to 5 hours.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-3-3 A polyimide varnish was obtained in the same manner as in Example 1-3-2.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- the resin composition layer was peeled off from the Upilex film as a support, and the test results of the polyimide film dried for 10 minutes at an IR temperature at which the film surface becomes 270 ° C. in an IR drying furnace are shown in Table 2 below. Shown in
- Example 1-3-4 A polyimide varnish was obtained in the same manner as in Example 1-3-2.
- the composition here is shown in Table 1 below. Further, the weight average molecular weight (Mw), the number average molecular weight (Mn) of the polyimide in the obtained polyimide varnish, and 10 minutes at 150 ° C. at 50 ° C. on a PET film (Cosmo Shine 100A4100) as a support. After partial drying, the resin composition layer is peeled off from the PET film as a support, and the film surface is 270 ° C. at an IR temperature of 270 ° C. while applying a tension of 4 kg / m uniaxially to the film. The test results of the polyimide film dried for a minute are shown in Table 2 below.
- Example 1-3-5 A polyimide varnish was obtained in the same manner as in Example 1-3-2.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- the resin composition layer was peeled off from the PET film as a support, and the thickness was about 10 wt.
- a polyimide film containing% solvent was obtained. The film was simultaneously biaxially stretched at 200 ° C. with a tension of 4 kg / m and then dried at 270 ° C. for 20 minutes to obtain a polyimide film having a thickness of 4.4 ⁇ m.
- Table 2 The test results are shown in Table 2 below.
- Example 1-4 Polyimide varnish as in Example 1-2-1 except that 4,4′-DDS was changed to 8.61 g (34.65 mmol) and 3,3′-DDS was changed to 8.61 g (34.65 mmol).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 below shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-5 Polyimide varnish similar to Example 1-2-1, except that 4,4′-DDS was changed to 6.89 g (27.72 mmol) and 3,3′-DDS was changed to 10.34 g (41.58 mmol) Got.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-6 A polyimide varnish was obtained in the same manner as in Example 1-4, except that 4,4′-ODPA was changed to 15.27 g (70.00 mmol) of pyromellitic dianhydride (PMDA).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-7 Polyimide as in Example 1-4, except that 4,4′-ODPA was changed to 20.59 g (70.00 mmol) of 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride (BPDA) A varnish was obtained.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-8 Polyimide varnish as in Example 1-4, except that 4,4′-ODPA was changed to 31.09 g (70.00 mmol) of 4,4 ′-(hexafluoroisopropylidene) diphthalic dianhydride (6FDA) Got.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-9 A polyimide varnish was obtained in the same manner as in Example 1-8, except that 4,4′-DDS was changed to 13.77 g (55.44 mmol) and 3,3′-DDS 3.44 g (13.86 mmol).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 below shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-10 A polyimide varnish was obtained in the same manner as in Example 1-8 except that 6.4 g (27.72 mmol) of 4,4′-DDS was changed to 10.34 g (41.58 mmol) of 3,3′-DDS. It was.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-11 Into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 1.81 (15.84 mmol) of trans-1,4-cyclohexyldiamine (CHDA) was introduced while introducing nitrogen gas. 15.73 g (63.36 mmol) of 3-DDS and 50.00 g of NMP were added. Subsequently, 24.82 g (80.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 28.67 g of NMP and 27.14 g of toluene were added at room temperature, and the temperature was raised to 160 ° C.
- CHDA trans-1,4-cyclohexyldiamine
- ODPA 4,4′-oxydiphthalic anhydride
- polyimide varnish The composition here is shown in Table 1 below.
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-12 Into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, while introducing nitrogen gas, 4.93 g (34.65 mmol) of 1,4-bis (aminomethyl) cyclohexane (14BAC) was introduced. Then, 8.61 g (34.65 mmol) of 3,3′-DDS and 50.00 g of GBL were added. Subsequently, 21.71 g (70.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 15.46 g of GBL and 26.02 g of toluene were added at room temperature, and the temperature was raised to 160 ° C.
- ODPA 4,4′-oxydiphthalic anhydride
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-13 Into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 5.13 g (33.25 mmol) of bis (aminomethyl) norbornane (BANBDA) was added while introducing nitrogen gas. -8.26 g (33.25 mmol) of DDS and 50.00 g of GBL were added. Then, 21.71 g (70.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 15.19 g of GBL and 24.90 g of toluene were added at room temperature, and then the temperature was raised to 160 ° C.
- ODPA 4,4′-oxydiphthalic anhydride
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-14 While introducing nitrogen gas into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 5.11 g (13.86 mmol) of 4,4′-bis (4-aminophenoxybiphenyl) (BAPB) ), 13.77 g (55.44 mmol) of 3,3-DDS and 50.00 g of GBL were added. Then, 21.71 g (70.00 mmol) of 4,4′-oxydiphthalic anhydride (ODPA), 22.28 g of GBL and 25.63 g of toluene were added at room temperature, and the temperature was increased to 160 ° C.
- BAPB 4,4′-bis (4-aminophenoxybiphenyl)
- polyimide varnish The composition here is shown in Table 1 below.
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-15 ⁇ , ⁇ '-bis (4-aminophenyl) -1,4-diisopropylbenzene (BAPDB) was introduced into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top while introducing nitrogen gas. To 11.94 g (34.65 mmol), 8.61 g (34.65 mmol) of 3,3′-DDS and 50.00 g of GBL were added.
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-16 While introducing nitrogen gas into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 8.4 g (34.65 mmol) of 4,4′-DDS and 8.61 g of 3,3′-DDS (34.65 mmol) and 50.00 g of GBL were added.
- polyimide varnish a polyimide GBL solution (hereinafter also referred to as polyimide varnish).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 1-17 While introducing nitrogen gas into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 8.4 g (34.65 mmol) of 4,4′-DDS and 8.61 g of 3,3′-DDS (34.65 mmol) and 50.00 g of GBL were added.
- polyimide varnish a polyimide GBL solution
- Mw weight average molecular weight
- Mn number average molecular weight
- Upilex film as a support body for 10 minutes at 150 degreeC
- Example 1-18 While introducing nitrogen gas into a 500 mL separable flask equipped with a stirring bar equipped with a Dean-Stark tube and a reflux tube at the top, 8.4 g (34.65 mmol) of 4,4′-DDS and 8.61 g of 3,3′-DDS (34.65 mmol) and 50.00 g of GBL were added.
- polyimide varnish a polyimide GBL solution (hereinafter also referred to as polyimide varnish).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- Example 2-1 A polyimide varnish was obtained in the same manner as in Example 1-1.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film with the support peeled off after drying for 20 minutes.
- Example 2-2-1 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film with the support peeled off after drying for 20 minutes.
- Example 2-2-2 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below. Further, the weight average molecular weight (Mw), number average molecular weight (Mn) of the polyimide in the obtained polyimide varnish, and Upilex film as a support are 10 minutes at 50 ° C., 10 minutes at 150 ° C., 250 ° C.
- Table 2 below shows the test results of the polyimide film with the support peeled off after drying for 20 minutes.
- Example 2-2-3 A polyimide varnish was obtained in the same manner as in Example 1-2-1.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-3-1 A polyimide varnish was obtained in the same manner as in Example 1-3-1.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film with the support peeled after drying for 1 hour.
- Example 2-3-2 A polyimide varnish was obtained in the same manner as in Example 1-3-2.
- the composition here is shown in Table 1 below.
- Table 2 shows the test results of the polyimide film after drying for 10 minutes at an IR temperature at which the film surface becomes 270 ° C. in an IR drying furnace.
- Example 2-3-3 A polyimide varnish was obtained in the same manner as in Example 1-3-2.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-4 A polyimide varnish was obtained in the same manner as in Example 1-4.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-5 A polyimide varnish was obtained in the same manner as in Example 1-5.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-6 A polyimide varnish was obtained in the same manner as in Example 1-6.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-7 A polyimide varnish was obtained in the same manner as in Example 1-7.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-8 A polyimide varnish was obtained in the same manner as in Example 1-8.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-9 A polyimide varnish was obtained in the same manner as in Example 1-9.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-10 A polyimide varnish was obtained in the same manner as in Example 1-10.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-11 A polyimide varnish was obtained in the same manner as in Example 1-11.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-12 A polyimide varnish was obtained in the same manner as in Example 1-12.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-13 A polyimide varnish was obtained in the same manner as in Example 1-13.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-14 A polyimide varnish was obtained in the same manner as in Example 1-14.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-15 A polyimide varnish was obtained in the same manner as in Example 1-15.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-16 A polyimide varnish was obtained in the same manner as in Example 1-16.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-17 A polyimide varnish was obtained in the same manner as in Example 1-17.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- Example 2-18 A polyimide varnish was obtained in the same manner as in Example 1-18.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- polyimide varnish a polyimide GBL solution (hereinafter also referred to as polyimide varnish).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film which was peeled off from the Upilex film as a support and dried at 270 ° C. for 20 minutes while being fixed to a SUS metal frame with Kapton tape.
- the weight average molecular weight (Mw) of the polyamic acid in the obtained polyamic acid varnish, a number average molecular weight (Mn), and 10 minutes at 150 degreeC for 10 minutes at 50 degreeC on the Upilex film as a support body 270 Table 2 below shows the test results of the polyimide film with the support peeled off after drying for 1 hour at ° C.
- polyamic acid varnish a polyamic acid GBL solution (hereinafter also referred to as polyamic acid varnish).
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 below shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 1 hour.
- Comparative Example 1-2 A polyamic acid varnish was obtained in the same manner as in Comparative Example 1-1.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- the resin composition layer was peeled off from the glass substrate (Corning Eagle) as a support, and dried at 270 ° C. for 1 hour in a state of being fixed to a SUS metal frame with Kapton tape. The film was broken and no film was obtained.
- polyimide GBL solution After the reaction for 12 hours, the oil bath was removed and the temperature was returned to room temperature to obtain a polyimide GBL solution.
- the composition here is shown in Table 1 below.
- Mw weight average molecular weight
- Mn number average molecular weight
- Table 2 shows the test results of the polyimide film in a state where the support was peeled off after drying at 270 ° C. for 20 minutes.
- the polyimide according to the present invention has high solubility in a solvent, and the polyimide film obtained from the polyimide is colorless and transparent, and is excellent in toughness and thermophysical properties.
- 3,3'-DDS in the polyimide production is preferably 20 mol% or more and 80 mol% or less of the total diamine component (Example 1 and Example 2).
- the molar ratio of 3,3′-DDS to 4,4′-DDS in the preparation of polyimide is preferably 2/8 to 6/4 (Examples 1-1 to 1-10, Examples 2-1 to Example 2-10) and 2/8 to 5/5 were found to be more preferable (Example 1-1 to Example 1-4, Example 1-6 to Example 1).
- Example 1-1 to Example 1-2-4, Example 1-9, Example 2-1 to Example 2- 2-4, Example 2-9 Each component of the above 3,3′-DDS and 4,4′-DDS has the structure represented by the general formula (A-1) contained in the polyimide and the general formula (A-5). Equal relationship with the molar ratio of the structure represented. That is, the molar ratio of the structure represented by the general formula (A-1) to the structure represented by the general formula (A-5) is preferably 2/8 to 6/4. More preferably, it is ⁇ 5 / 5.
- Examples 1-1 to 1-5 and Examples 2-1 to 2-5 using ODPA as an acid dianhydride are PMDA or BPDA as an acid dianhydride. Yellowness (YI) and retardation (Rth) could be made smaller than those of Examples 1-6 and 2-6 and Examples 1-7 and 2-7 used.
- Examples 1-1 to 1-5 and 2-1 to 2-5 using ODPA as the acid dianhydride are examples 1-8 using 6FDA as the acid dianhydride. As compared with Examples 1-10 and 2-8 to 2-10, it was found that the tensile elongation and fracture strength were higher and the toughness was excellent.
- the polyimide contains a structure represented by the general formula (B-5) selected as B in the general formula (1).
- the structure A represented by the general formula (1) includes a structure represented by the general formula (A-1) and the general formula (A-5), and a structure represented by the general formula (1).
- B includes the general formula (B-5), and the molar ratio of the structure represented by the general formula (A-1) to the structure represented by the general formula (A-5) is 2/8 to 4 It is preferable to adjust to the range of / 6. This corresponds to Example 1-1 to Example 1-3-4 and Example 2-1 to Example 2-3-4. Thereby, while being able to obtain a colorless and transparent polyimide film, it is excellent in toughness and high glass transition temperature (Tg) can be obtained.
- Tg high glass transition temperature
- Example 1-2-2 in which ODPA is used and the molar ratio between the structure represented by the general formula (A-1) and the structure represented by the general formula (A-5) is 3: 7 is the same.
- Example 2-2-2 was compared with Example 1-2-1, Example 1-2-3, Example 1-2-4, Example 2-2-1, and Example 2-2-3.
- the remaining amount of GBL is small.
- the remaining amount of GBL is preferably less than 1% by mass and more preferably 0.5% by mass or less.
- Example 1-1 to Example 1-18 in which the ratio of ⁇ 1 / ⁇ 2 is in the range of 0.95 to 1.05 the positional deviation ⁇ can be set to 20 ⁇ m or less, and the positional deviation can be reduced. I found that it can be made smaller.
- the polyimide film prepared in Example 4 was attached to a Kapton film (film thickness: 155 ⁇ m) substrate with tape so as not to bend.
- the polyimide film on the Kapton film substrate was heated to 200 ° C. by a sputtering apparatus to form an ITO layer having a thickness of 15 nm. After the ITO film is formed, the polyimide film is taken out for each Kapton film substrate, then the polyimide film is turned over, the surface side with the ITO layer is opposed to the Kapton film substrate, and the Kapton film substrate is again formed. Pasted.
- an ITO layer having a film thickness of 15 nm was formed again by a sputtering apparatus under the condition of 200 ° C., and a film (laminated body) in which transparent electrode layers were laminated on both surfaces was obtained.
- the film laminated with the obtained transparent electrode layer had no warp and could be handled well.
- FIG. 3 is a 1 H-NMR spectrum of the ODPA-DDS copolymer.
- FIG. 4 is a 13 C-NMR spectrum of the ODPA-DDS copolymer.
- the polyimide GBL solution was dissolved in a deuterated DMSO solution so that the polyimide solid content concentration was 15 wt%, and the proton nuclear magnetic resonance spectrum of the resulting solution was made by JEOL Ltd., JNM- Using a GSX400 FT-NMR apparatus, the 1 H-NMR spectrum was measured by integrating 16 times, and the 13 C-NMR spectrum was measured by integrating 1000 times.
- the polyimide film containing the polyimide of the present invention and a laminate using the polyimide film are suitable as a substrate for a semiconductor substrate, a TFT-LCD insulating film, an electrode protective film, etc., and a flexible and biased substrate in addition to application to a touch panel material. Can be used.
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Abstract
Description
0.95 ≦ α2/α1 ≦ 1.05 (I)
α1:測定1回目のフィルムのガラス転移点以下の熱膨張係数
α2:測定2回目のフィルムのガラス転移点以下の熱膨張係数
本実施の形態に係るポリイミドフィルムは、下記一般式(1)で表されるポリイミドを含有する。
ポリイミドフィルムに含有されるポリイミドは、酸二無水物とジアミンとを原料に生成することができる。一般式(1)のAは、ジアミンから得ることができる。また本実施の形態では、一般式(1)におけるAとして、下記一般式(A-1)で表される構造(以下、「構造A1」ともいう。)と、下記一般式(A-2)、下記一般式(A-3)、及び、下記一般式(A-4)で表される構造のうちいずれか1種(以下、「構造A2」ともいう。)以上と、を含む(以下、「第一のポリイミドフィルム」ともいう)。
次に、一般式(1)のBについて説明する。一般式(1)のBは、当該構造単位は、酸二無水物から得ることができる。
上述のような本実施の形態に係るポリイミドは、これを溶媒に溶解したワニス(樹脂組成物)として、例えばフィルムや膜の製造原料として用いられる。よって本実施の形態におけるポリイミドワニスは、一般式(1)で表されるポリイミドを溶媒に分散又は溶解したポリイミドワニスである。また、一般式(1)中のAが、一般式(A-1)で表される構造及び、一般式(A-5)で表される構造を含み、これらの組成比(前記一般式(A-1)で表される構造単位/前記一般式(A-5)で表される構造単位)が、モル比で、2/8~6/4の範囲内である。更に、一般式(1)で表されるBが、下記一般式(B-5)で表される構造を含む。
図1は、本実施の形態に係るポリイミドフィルムを示す断面概略図である。本実施の形態に係るポリイミドフィルム10は、例えば、支持体11の表面上に樹脂組成物層12が形成された構造である。なお支持体11はなくてもよい。本実施の形態においては支持体11がなくても支持性のあるフィルム(自立フィルム)となることが、フィルム基板としての強度を保持する観点から好ましい。尚、支持性のあるフィルムとは5%以上の破断伸度を有するフィルムのことを示している。積層体になっているフィルムについては、剥がしたフィルムが5%以上の破断伸度を有している場合、支持性のあるフィルムに該当する。
図2は、本実施の形態に係る積層体を示す断面概略図である。本実施の形態に係る積層体20は、ポリイミドフィルム10の表面上に透明電極層21を設けている。
本実施の形態のポリイミドフィルムは、下記一般式(1)で表されるポリイミドを含有し、前記一般式(1)におけるAとして、下記一般式(A-1)で表される構造を含む(以下、「第二のポリイミドフィルム」ともいう)。
0.95 ≦ α2/α1 ≦ 1.05 (I)
α1:測定1回目のフィルムのガラス転移点以下の熱膨張係数
α2:測定2回目のフィルムのガラス転移点以下の熱膨張係数
Rth=Δn×d
Δn={(Nx+Ny)/2-Nz}
ここで、Nx、Nyは平面方向、Nzは厚み方向の屈折率を指し、dはサンプルの厚み(nm)を指す。
以下に本実施の形態におけるポリイミドフィルムと製法について説明する。
以下に製法2-2について説明する。
本実施の形態におけるポリイミドフィム及び積層体は、前述したように、表面保護フィルム、カラーフィルター、TFT、などの基板フィルム、絶縁保護膜として用いることができる。これらのポリイミドフィム及び積層体は、例えば、タッチパネル機能を備えたディスプレイ、有機EL照明、フレキシブルディスプレイ、スマートフォン、タブレット端末、折り曲げが可能なスマートフォンやタブレット端末、その他フレキシブルデバイス、曲面を有する有機EL照明や有機ELディスプレイなど、の製品に好適に利用することができる。ここで、フレキシブルデバイスとは、例えば、フレキシブルディスプレイ、フレキシブル太陽電池、フレキシブルタッチパネル、フレキシブル照明、フレキシブルバッテリーなどをいう。
重量平均分子量(Mw)及び、数平均分子量(Mn)は、ゲルパーミエーションクロマトグラフィー(GPC)にて、下記の条件により測定した。溶媒としては、N,N-ジメチルホルムアミド(和光純薬工業社製、高速液体クロマトグラフ用)を用い、測定前に24.8mol/Lの臭化リチウム一水和物(和光純薬工業社製、純度99.5%)及び63.2mol/Lのリン酸(和光純薬工業社製、高速液体クロマトグラフ用)を加えたものを使用した。また、重量平均分子量を算出するための検量線は、スタンダードポリスチレン(東ソー社製)を用いて作成した。
カラム:TSK-GEL SUPER HM-H
流速:0.5mL/分
カラム温度:40℃
ポンプ:PU-2080(JASCO社製)
検出器:RI-2031Plus(RI:示差屈折計、JASCO社製)
UV-2075Plus(UV-Vis:紫外可視吸光計、JASCO社製)
乾燥したサンプル長3×50mm、ポリイミドフィルムを引っ張り試験機(株式会社A&D社製:RTG-1210)を用いて、速度100mm/minで引張り、破断伸度及び破断強度を測定した。
ポリイミドフィルムを、日本電色工業株式会社製(Spectrophotometer:SE600)にてD65光源を用い、黄色度(YI値)及び全光線透過率を測定した。なお、特に記載のない限り、サンプルとして15±1μmの膜厚のフィルムについて測定を行った。
ポリイミドフィルムを、王子計測機器株式会社製の位相差測定装置(KOBRA-WR)を用いて、波長589nmにおけるΔnを測定し、下記式によって厚み15μm換算のRthを算出した。
Rth=Δn×d
Δn={(Nx+Ny)/2-Nz}
ここで、Nx、Nyは平面方向、Nzは厚み方向の屈折率を指す。
ここで、dは、サンプルの厚みを指す。本測定においてはd=15μmとしてRthを算出した。
温度50~350℃の範囲におけるガラス転移温度(Tg)、及び線膨張係数(CTE)の測定は、ポリイミドフィルムを3mm×20mmの大きさにカットしたものを試験片として、熱機械分析により行った。測定装置としてセイコーインスツル株式会社製(EXSTAR6000)を用い、引張荷重49mN、昇温速度10℃/分及び窒素気流下(流量100ml/分)の条件で、温度50~350℃の範囲における試験片伸びの測定を行った。得られたチャートの変曲点をガラス転移温度として求め、100~200℃におけるポリイミドフィルムの線膨張係数(CTE)を求めた。
ポリイミドフィルムを3mm×20mmの大きさにカットしたものを試験片として、熱機械分析により行った。測定装置としてセイコーインスツル株式会社製(EXSTAR6000)を用い、引張荷重49mN、昇温速度10℃/分及び窒素気流下(流量100ml/分)とするとともに、以下に示す条件で測定を行った。
フィルムの位置ずれ性δは以下の方法により測定した。
まず、ポリイミドフィルムの中心に100mm×100mmの正方形を描き、加熱処理前のその正方形の4辺の長さの平均値をL1とした。4辺の長さは0.001mm単位まで測定した。同様に加熱処理後の正方形の4辺の長さの平均値をL2としその差の絶対値を位置ずれ性δ(=|L1-L2|)と定義した。
続いて、製造条件ついて具体的に説明する。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDS13.77g(55.44mmol)、3,3’-DDS3.44g(13.86mmol)、NMP50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、NMP22.28g、トルエン26.02gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドNMP溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDSを12.05g(48.51mmol)に、3,3’-DDSを5.16g(20.79mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL22.28g、トルエン26.02gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、250℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後に、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、IR乾燥炉でフィルム表面が270℃となるIR温度で10分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で1時間乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、フィルムに一軸方向に4kg/mの張力をかけながら、IR乾燥炉でフィルム表面が270℃となるIR温度で10分乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを10.32g(41.58mmol)に、3,3’-DDSを6.90g(27.72mmol)に変更し、180℃での反応時間を7時間とした以外は、実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
180℃での反応時間を5時間とした以外は、実施例1-3-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-2と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で1時間乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、IR乾燥炉でフィルム表面が270℃となるIR温度で10分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-2と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのPETフィルム(コスモシャイン100A4100)上で50℃にて10分、150℃で10分乾燥した後に、樹脂組成物層を支持体としてのPETフィルム上から剥離し、フィルムに一軸方向に4kg/mの張力をかけながら、IR乾燥炉でフィルム表面が270℃となるIR温度で10分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-2と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのPETフィルム(コスモシャイン100A4100)上で50℃にて10分、100℃で10分乾燥した後に、樹脂組成物層を支持体としてのPETフィルム上から剥離し、厚み11μmの約10wt.%の溶媒を含有するポリイミドフィルムを得た。該フィルムを200℃で4kg/mの張力で同時二軸延伸を行った後、270℃20分間乾燥を行い、厚み4.4μmのポリイミドフィルムを得た。試験結果を以下の表2に示す。
4,4’-DDSを8.61g(34.65mmol)に、3,3’-DDSを8.61g(34.65mmol)に変更した以外は、実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを6.89g(27.72mmol)に、3,3’-DDSを10.34g(41.58mmol)に変更した以外は、実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAをピロメリット酸二無水物(PMDA)15.27g(70.00mmol)に変更した以外は、実施例1-4と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAを3,3’,4,4’-ビフェニルテトラカルボン酸二無水物(BPDA)20.59g(70.00mmol)に変更した以外は、実施例1-4と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAを4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸二無水物(6FDA)31.09g(70.00mmol)に変更した以外は、実施例1-4と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを13.77g(55.44mmol)に、3,3’-DDS3.44g(13.86mmol)に変更した以外は、実施例1-8と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを6.89g(27.72mmol)に、3,3’-DDSを10.34g(41.58mmol)に変更した以外は、実施例1-8と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながらtrans-1,4-シクロヘキシルジアミン(CHDA)を1.81(15.84mmol)、3,3-DDSを15.73g(63.36mmol)、NMP50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)24.82g(80.00mmol)、NMP28.67g、トルエン27.14gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。3時間反応後、オイルバスを外して室温に戻し、ポリイミドNMP溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら1,4-ビス(アミノメチル)シクロヘキサン(14BAC)を4.93g(34.65mmol)に、3,3’-DDSを8.61g(34.65mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL15.46g、トルエン26.02gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。4時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながらビス(アミノメチル)ノルボルナン(BANBDA)5.13g(33.25mmol)に、3,3’-DDSを8.26g(33.25mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL15.19g、トルエン24.90gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。6時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-ビス(4-アミノフェノキシビフェニル)(BAPB)5.11g(13.86mmol)に、3,3-DDSを13.77g(55.44mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL22.28g、トルエン25.63gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。6時間反応後、オイルバスを外して室温に戻し、ポリイミドNMP溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながらα,α’-ビス(4-アミノフェニル)-1,4-ジイソプロピルベンゼン(BAPDB)を11.94g(34.65mmol)に、3,3’-DDSを8.61g(34.65mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL28.47g、トルエン26.99gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。6時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDS8.61g(34.65mmol)に、3,3’-DDS8.61g(34.65mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)10.86g(35.00mmol)、ヒドロキシピロメリット酸二無水物(HPMDA)7.85g(35.00mmol)、GBL16.69g、トルエン24.41gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDS8.61g(34.65mmol)に、3,3’-DDS8.61g(34.65mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)を17.37g(56.00mmol)、1,3,3a,4,5,9b-ヘキサヒドロ-5-(テトラヒドロ―2,5-ジオキソ-3-フラニル)ナフト[1,2-c]フラン-1,3-ジオン(TDA)4.20g(14.00mmol)、GBL22.02g、トルエン26.07gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDS8.61g(34.65mmol)に、3,3’-DDS8.61g(34.65mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)17.37g(56.00mmol)、ビシクロ[2,2,2]オクト-7-エン-2,3,5,6-テトラカルボン酸二無水物(BODA)3.47g(14.00mmol)、GBL20.67g、トルエン25.58gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、250℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-2-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で1時間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-2と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、IR乾燥炉でフィルム表面が270℃となるIR温度で10分間乾燥した後、支持体を剥離したポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-3-2と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-4と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-5と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてガラス基板(コーニングEagle)上での50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-6と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-7と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-8と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-9と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-10と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-11と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-12と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-13と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-14と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-15と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-16と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-17と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
実施例1-18と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら2,2’-ビス(トリフルオロメチル)ベンジジン(TFMB)9.51g(29.70mmol)に、3,3’-DDSを7.37g(29.70mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)9.31g(30.00mmol)、4,4’-(ヘキサフルオロイソプロピリデン)ジフタル酸二無水物(6FDA)13.33g(30.00mmol)、GBL20.69g、トルエン25.87gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。6時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液(以下、ポリイミドワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分乾燥した後、樹脂組成物層を支持体としてのUpilexフィルム上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で20分間乾燥したポリイミドフィルムの試験結果を以下の表2に示す。
参考例1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDSを12.05g(48.51mmol)に、3,3’-DDSを5.16g(20.79mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL22.28gを室温で加えた後、内温50℃まで昇温し、50℃で12時間反応後、オイルバスを外して室温に戻し、ポリアミック酸GBL溶液(以下、ポリアミック酸ワニスともいう)を得た。
500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDSを10.32g(41.58mmol)に、3,3’-DDSを6.90g(27.72mmol)、GBL50.00gを加えた。続いて4,4’-オキシジフタル酸無水物(ODPA)21.71g(70.00mmol)、GBL22.28gを室温で加えた後、内温50℃まで昇温し、50℃で12時間反応後、オイルバスを外して室温に戻し、ポリアミック酸GBL溶液(以下、ポリアミック酸ワニスともいう)を得た。ここでの組成を以下の表1に示す。また、得られたポリポリアミック酸ワニス中のポリアミック酸の重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのUpilexフィルム上で50℃にて10分、150℃で10分、270℃で1時間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら4,4’-DDS17.21g(69.30mmol)、GBL50.00gを加えた。続いて4,4’-ODPA21.71g(70.00mmol)、GBL22.28g、トルエン26.02gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。その結果、反応3時間経過後にポリイミドワニスが白濁したため、オイルバスを外して室温に戻し、ポリイミドワニスを得た。なお、3時間経過後も重合を続けたところ、分子量は増加しなかった。ここでの組成を以下の表1に示す。また、得られたワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
比較例1-1と同様にポリアミック酸ワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリアミック酸中のポリアミック酸の重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分した後、樹脂組成物層を支持体としてのガラス基板(コーニングEagle)上から剥離し、SUS金枠にカプトンテープで固定した状態で、270℃で1時間乾燥したところ、イミド化の収縮により破膜しフィルムが得られなかった。
ディーン・スターク管及び還流管を上部に備えた撹拌棒付き500mLセパラブルフラスコに、窒素ガスを導入しながら3,3’-DDS17.21g(69.30mmol)、GBL50.00gを加えた。続いて4,4’-ODPA21.71g(70.00mmol)、GBL22.28g、トルエン26.02gを室温で加えた後、内温160℃まで昇温し、160℃で1時間加熱還流を行い、イミド化を行った。イミド化完了後、180℃まで昇温し、トルエンを抜き出しながら反応を続けた。12時間反応後、オイルバスを外して室温に戻し、ポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を表2に示す。
4,4’-ODPAをPMDA15.27g(70.00mmol)に変更した以外は、比較例1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを3,3’-DDS17.21g(69.30mmol)に変更した以外は、比較例3と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAを3,3’,4,4’-BPDA20.59g(70.00mmol)に変更した以外は、比較例1と同様にポリイミドワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を表2に示す。
4,4’-DDSを3,3’-DDS17.21g(69.30mmol)に変更した以外は、比較例5と同様にワニスを得た。ここでの組成を以下の表1に示す。また、得られたポリイミドワニス中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を表2に示す。
4,4’-ODPAを6FDA31.09g(70.00mmol)に、3,3’-DDSを4,4’-DDSに変更した以外は、比較例2と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを3,3’-DDSに変更した以外は、比較例7と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAをHPMDA15.69g(70.00mmol)に、3,3’-DDSを4,4’-DDSに変更した以外は、比較例2と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを3,3’-DDSに変更した以外は、比較例9と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAをTDA21.01g(70.00mmol)に、3,3’-DDSを4,4’-DDSに変更した以外は、比較例2と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを3,3’-DDSに変更した以外は、比較例11と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAをBODA17.37g(70.00mmol)に、3,3’-DDSを4,4’-DDSに変更した以外は、比較例2と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを3,3’-DDSに変更した以外は、比較例13と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSをCHDA7.91g(69.30mmol)に変更した以外は、比較例1と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-ODPAを4,4’-BPDA20.60g(70.00mmol)に変更した以外は、比較例15と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSを14-BAC9.86g(69.30mmol)に変更した以外は、比較例1と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSをBANBDA10.69g(69.30mmol)に変更した以外は、比較例1と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSをBAPB25.53g(69.30mmol)に変更した以外は、比較例1と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
4,4’-DDSをBAPDB23.87g(69.30mmol)に変更した以外は、比較例1と同様にポリイミドGBL溶液を得た。ここでの組成を以下の表1に示す。また、得られたポリイミドGBL溶液中のポリイミドの重量平均分子量(Mw)、数平均分子量(Mn)、及び、支持体としてのガラス基板(コーニングEagle)上で50℃にて10分、150℃で10分、270℃で20分間乾燥した後、支持体を剥離した状態のポリイミドフィルムの試験結果を以下の表2に示す。
カプトンフィルム(膜厚155μm)基材上に実施例4で作製したポリイミドフィルムをたわみがないようにテープで張り付けた。スパッタリング装置により、前記カプトンフィルム基材上のポリイミドフィルムを200℃に加熱し、膜厚15nmのITO層を成膜した。ITO成膜後、カプトンフィルム基材ごとにポリイミドフィルムを取り出し、続いて、ポリイミドフィルムを裏に返して、ITO層のある面側を、カプトンフィルム基材に対向させて、再びカプトンフィルム基材に張り付けた。そして再びスパッタリング装置により、200℃の条件で膜厚15nmのITO層を成膜し、両面に透明電極層を積層したフィルム(積層体)を得た。得られた透明電極層を積層したフィルムは反りがなく、良好に取扱い可能であった。
Claims (14)
- 前記一般式(A-1)で表される構造と、前記一般式(A-5)で表される構造の比(一般式(A-1)で表される構造/一般式(A-5)で表される構造)が、モル基準で2/8~6/4の範囲内であることを特徴とする請求項2に記載のポリイミドフィルム。
- フィルムの膜厚が1μm以上5μm以下であることを特徴とする請求項1から請求項6のいずれかに記載のポリイミドフィルム。
- 前記ポリイミドの重量平均分子量(Mw)が、30,000以上であることを特徴とする請求項1から請求項7のいずれかに記載のポリイミドフィルム。
- 黄色度(YI)が5.0以下であることを特徴とする請求項1から請求項8のいずれかに記載のポリイミドフィルム。
- γ-ブチロラクトンの含有量が3質量%よりも小さいことを特徴とする請求項1から請求項9のいずれかに記載のポリイミドフィルム。
- 請求項1から請求項10のいずれかに記載のポリイミドフィルムを用いたことを特徴とする製品。
- 請求項1から請求項10のいずれかに記載のポリイミドフィルムと、透明電極層とを有することを特徴とする積層体。
- 前記透明電極層を、前記ポリイミドフィルムの両面に、少なくともそれぞれ1層以上有することを特徴とする請求項13に記載の積層体。
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TWI588182B (zh) | 2017-06-21 |
KR20190130066A (ko) | 2019-11-20 |
EP3279237A4 (en) | 2018-04-04 |
US20180086939A1 (en) | 2018-03-29 |
KR20170103946A (ko) | 2017-09-13 |
KR102052150B1 (ko) | 2019-12-05 |
EP3279237A1 (en) | 2018-02-07 |
JP6622287B2 (ja) | 2019-12-18 |
JP6817389B2 (ja) | 2021-01-20 |
JP2020001393A (ja) | 2020-01-09 |
CN107428934A (zh) | 2017-12-01 |
US11078378B2 (en) | 2021-08-03 |
JPWO2016158825A1 (ja) | 2018-01-11 |
KR102181466B1 (ko) | 2020-11-23 |
TW201700542A (zh) | 2017-01-01 |
CN107428934B (zh) | 2020-10-02 |
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