WO2005118686A1 - 可溶性ポリイミド及びこれを使用した光学補償部材 - Google Patents
可溶性ポリイミド及びこれを使用した光学補償部材 Download PDFInfo
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- WO2005118686A1 WO2005118686A1 PCT/JP2005/009318 JP2005009318W WO2005118686A1 WO 2005118686 A1 WO2005118686 A1 WO 2005118686A1 JP 2005009318 W JP2005009318 W JP 2005009318W WO 2005118686 A1 WO2005118686 A1 WO 2005118686A1
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- polyimide
- soluble
- birefringence
- formula
- organic solvent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1039—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors comprising halogen-containing substituents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/16—Polyester-imides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
- C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
Definitions
- the present invention relates to a soluble polyimide having high transparency and high birefringence of a polyimide layer obtained by casting and drying a polyimide solution dissolved in an organic solvent, and a polyimide solution using the same.
- the present invention relates to a coating liquid, a laminated member, and an optical compensation member.
- a retardation plate for optical compensation is generally used.
- Patent Document 2 discloses a polyimide resin which is appropriately dissolved in methylethylketone (MEK) on a support such as PMMA (polymethylmethacrylate) for coating a polyimide.
- MEK methylethylketone
- PMMA polymethylmethacrylate
- Patent Document 3 discloses a polyimide resin having a birefringence of 0.001 to 0.2, but a polyimide resin having a birefringence of 0.04 or more has a coloring power, Or, it is not suitable as a soluble polyimide that can be coated on a support such as PMMA depending on the solubility of the organic solvent.
- a polyimide solution having high solubility in an organic solvent of a polyimide is cast on a polymer support, and then dried, and a polyimide layer obtained can be provided with a high birefringence and a low coloring property. Liimide resin was not found.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-344856
- Patent Document 2 Special Table 2000—511296
- Patent Literature 3 Japanese Patent Publication No. Hei 8—511812
- a polyimide solution obtained by casting a polyimide solution dissolved in an organic solvent and then drying the resulting polyimide layer has high birefringence and high transparency, and a polyimide solution using the same. And a coating liquid, a laminated member, and an optical compensation member.
- a solid solution containing 5% or more of a solid component is soluble in an organic solvent. It is intended to provide a soluble polyimide having an in-plane and thickness direction birefringence of 0.04 or more and 0.15 or less.
- the present invention can solve the above problems by the following.
- the solid component is soluble in an organic solvent in an amount of 5% or more.
- a polyimide solution dissolved in the solvent is cast, and then dried. Soluble polyimide of not less than 04 and not more than 0.15.
- R 5 hydrogen, a halogen element, a halogenated alkyl group, an aromatic group
- R 6 hydrogen, a halogen element, a halogenated alkyl group, an aromatic group, wherein R and R are the same but different Even
- the soluble polyimide of the present invention is soluble in an organic solvent in a solid component content of 5% or more. After casting a polyimide solution dissolved in the organic solvent, the polyimide layer obtained by drying is 0% in birefringence. 04 or more and 0.15 or less.
- the retardation film can be thinned by using the soluble polyimide in a retardation application for the purpose of optical compensation.
- the gist of the polyimide resin according to the present invention is that the polyimide component is soluble in an organic solvent in an amount of 5% or more of a solid component, and is obtained by casting a polyimide solution dissolved in the solvent and then drying.
- the soluble polyimide can be used as an optical compensation member.
- TAC triacetyl cellulose
- TAC triacetyl cellulose
- the organic solvent is an organic solvent in which polyimide is dissolved in a polyimide layer forming step in which a polyimide solution is cast on a support having high molecular weight and dried.
- the organic solvent is not particularly limited as long as it is a solvent that dissolves polyimide.
- the influence on the polymer-based support for example, dissolution and swelling to such an extent that the properties and uniformity are impaired
- amide solvents such as NMP (N-methylpyrrolidone) and DMF (N, N-dimethylformamio); ester solvents such as ethyl acetate; halogen solvents such as chloroform and dichloromethane; dioxolane; Ether solvents such as ethers, ketone solvents such as MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone) and cyclohexanone, and aromatic hydrocarbon solvents such as toluene and xylene can be used.
- the non-solvent or the non-solvent may be used without dissolving the polyimide.
- a poor solvent may be appropriately used as a mixed solvent.
- the organic solvent in which the polyimide is dissolved is chloroform, dichloromethane, etc.
- Halogen solvents, ether solvents such as dioxolane, and getyl ether, and ketone solvents such as MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), and cyclohexanone have high molecular weight in the polyimide layer forming process. It is more preferable because it has less effect on the body.
- Ether solvents such as dioxolan and getyl ether, MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), cyclohexanone
- MEK methyl ethyl ketone
- MIBK methyl isobutyl ketone
- cyclohexanone Ketone solvents such as MEK (methyl ethyl ketone), MIBK (methyl isobutyl ketone), and cyclohexanone are more preferred.
- various supports can be used, but a support having a high molecular force in terms of light weight and the like, and further, a support made of an organic polymer used for optical applications. Can be suitably used.
- Specific materials constituting the support include, for example, PMMA, TAC (or celluloses), PET (polyethylene terephthalate), PC (polycarbonate) and the like.
- PMMA, TAC (or celluloses), PET, and TAC (or celluloses) can be preferably used.
- the support is in the form of a film from the viewpoint of weight reduction and the like.
- the thickness of the polyimide layer formed on the support is preferably 1 ⁇ m or more and less than 40 ⁇ m, more preferably 1 ⁇ m or more and less than 20 ⁇ m. This is more preferable because the optical compensation member can be made thin.
- the polyimide layer is preferably a polyimide molded article having a residual solvent amount of less than 1% obtained by casting a polyimide solution dissolved in an organic solvent and then drying.
- the in-plane and thickness direction birefringence of the polyimide layer is the difference between the in-plane refractive index and the thickness direction refractive index, and is preferably 0.04 or more and 0.15 or less. More preferably, it is 0.05 or more and 0.15 or less. If the in-plane and the birefringence in the thickness direction of the polyimide layer are less than 0.04, it is necessary to increase the thickness of the polyimide layer when it is used for a retardation film. It may be. If the birefringence in the plane and in the thickness direction exceeds 0.15, it may be difficult to control the thickness of the polyimide layer in applications where uniform birefringence properties are required.
- the birefringence in the plane and in the thickness direction is not a value when the thickness is specified, but it is more preferable that the birefringence is achieved at a thickness of 1 ⁇ m or more and less than 40 ⁇ m. At least 1 ⁇ m, less than 30 ⁇ m, and more than 5 ⁇ m, less than 25 ⁇ m, especially at 20 ⁇ m It's done! /, It's preferable! / ,.
- the acid dianhydride that can be suitably used for the soluble polyimide of the present invention may partially depend on the structure of diamine, but can impart solubility to an organic solvent to the synthesized polyimide, Further, those capable of imparting birefringence and transparency to the polyimide layer are preferable. However, it is difficult to impart all of the above-mentioned solubility, birefringence and transparency using one kind of acid dianhydride. It is preferable to use both an acid dianhydride having an acid dianhydride and an acid dianhydride having a site for imparting birefringence to a polyimide layer (however, the above-described sites are introduced into one molecule, and one type of acid dianhydride is used).
- solubility imparting portion and the birefringence imparting portion exhibit the solubility and birefringence of the soluble polyimide.
- the solubility-imparting site is considered to be the solubility-imparting site because the solubility-imparting site does not contribute to the birefringence of the polyimide at all.
- the birefringence-imparting site which is considered to be a birefringence-imparting site because the birefringence contribution is greater than the solubility of polyimide.
- Examples of the acid dianhydride that imparts solubility to polyimide include bis (2,3-dicarboxyphenyl) sulfone dianhydride and bis (2,3-dicarboxyphenyl) sulfide dianhydride.
- Examples of the acid dianhydride that imparts birefringence to polyimide include, for example, pyromellitic dianhydride, 2,5-difluoropyromellitic dianhydride, and 2-fluoropyromellitate.
- pyromellitic dianhydride 3,3 ', 4,4'-biphenyltetracarboxylic dianhydride
- p-biphenylbis (trimellitic acid monoester) Acid anhydride) is preferred.
- diamines that can be used in the present invention a combination with the acid dianhydride used is preferable.
- the polyimide can be made soluble by the synthesized polyimide, or the polyimide layer can be made birefringent or transparent.
- the polyimide layer can be made birefringent or transparent.
- diamines are preferable in view of the surface power of imparting birefringence to the synthesized polyimide layer and the molded polyimide layer. It is preferable to select 2,2'-bis (trifluoromethyl) -4,4, -diaminobiphenyl from the viewpoint of imparting solubility to the synthesized polyimide.
- X is large and y is small, the birefringence is small, and the composition ratio is
- composition ratio is X: y is larger than 95: 5 and X is larger and y is smaller, the birefringence becomes smaller and the composition ratio becomes smaller.
- the solubility of the polyimide in an organic solvent or the transparency when formed into a film becomes poor.
- the weight average molecular weight of the soluble polyimide is preferably 30,000 or more and 200,000 or less as measured by GPC in terms of PEG (polyethylene glycol). If the weight average molecular weight is less than 30,000, there may be a problem in durability. Further, if the weight average molecular weight is 200,000 or more, the solubility in an organic solvent is reduced, so that it may be difficult to use the soluble polyimide in an application in which the soluble polyimide is dissolved in the organic solvent.
- the imidation ratio of the soluble polyimide is preferably 80% or more. If it is less than 80%, it is not preferable in terms of transparency and birefringence. It is preferably at least 90%, more preferably at least 95%, even more preferably at least 99%.
- the method includes three steps of (1) polymerization of polyamic acid, (2) imidization of polyamic acid, and (3) precipitation of polyimide resin, and an example will be described for each (but not limited thereto).
- the acid dianhydride is dispersed in the reaction solvent in which diamine is dissolved, and completely dissolved by stirring. Polymerization by dissolving and dispersing the acid dianhydride in the reaction solvent and then dispersing or dispersing it in the reaction solvent, and then polymerizing using diamine.Polymerization by reacting a mixture of acid dianhydride and diamine in the reaction solvent Although there are methods and the like, a known polymerization method may be used.
- the reaction time is preferably about 1 hour to 5 hours.
- the reaction is preferably performed until the viscosity of the polyamic acid solution becomes 5 Pa's or more, more preferably 1 OPa's or more, and most preferably 20 Pa's or more. If the viscosity of the polyamic acid solution is too low, the handleability may decrease.
- the above viscosity is kept at 23 ° C in a water bath kept at 23 ° C, and it can be measured with a B-type viscometer with a rotor of No. 7 and a rotation speed of 4 rpm.
- the reaction device preferably has a temperature adjusting device for controlling the reaction temperature.
- the reaction solution temperature is preferably 60 ° C or less, and more preferably 40 ° C or less. Is preferred in terms of controlling
- the solvent used for the polymerization of the polyamic acid is preferably a solvent capable of dissolving the acid dianhydride and diamines used, and is preferably a solvent capable of dissolving the further formed polyamic acid. Is preferred.
- urea such as N, N-dimethylethyl perylene, dimethyl sulfoxide, diphenyl sulfone, sulfoxide or sulfones such as tetramethyl sulfone, N, N-dimethylacetamide (DMAc)
- Amides such as N, N-dimethylformamide (DMF), N, N, -getylacetamide, N-methyl-2-pyrrolidone (NN), ⁇ -butyl ratatatone, hexamethylphosphoric triamide, Aprotic solvents such as phorylamides, alkyl halides such as chloroform, methylene chloride, etc .
- aromatic hydrocarbons such as benzene and toluene
- phenols such as phenol and tarezole
- Ethers such as athenole and ⁇ -creso-noremethinole
- the polyamic acid is dissolved in the reaction solvent in an amount of 5 to 50 wt%, preferably 10 to 40 wt%, in terms of handling surface strength.
- the molar ratio of the acid dianhydride to the diamine used in the polymerization reaction of the polyamic acid solution is preferably 0.9 or more and 1.5 or less, as calculated by the following equation. It is more preferably 0.95 or more and 1.3 or less, particularly preferably 0.99 or more and 1.2 or less. Preferred in reducing acid dihydrate in the reaction.
- the method for imidizing polyamic acid will be described.
- Various known methods can be used as the method for imidizing the polyamic acid.
- a thermal imidation method in which a ring is thermally dehydrated and a chemical imidation method using a dehydrating agent can be used.
- the thermal imidization method is performed by adding an azeotropic solvent such as toluene which azeotropes with water generated during the imidization reaction to the polyamic acid solution, and then heating.
- an imidization accelerator can be used in combination.
- the chemical imidization method is preferable in that the imidization reaction proceeds more quickly than the thermal imidization method and the decomposition of the polyamic acid upon heating is suppressed and imidization can be performed.
- an imidization accelerator In the chemical imidation method, it is preferable to use an imidization accelerator since the reaction is completed in a short time.
- Various tertiary amines can be used as the imidization accelerator, but in particular, heterocyclic tertiary amines such as pyridine, quinoline, and isoquinoline can be used to obtain a polyimide having a high imidation ratio.
- heterocyclic tertiary amines such as pyridine, quinoline, and isoquinoline can be used to obtain a polyimide having a high imidation ratio.
- the temperature at the time of imidization is from 40 ° C to the boiling point of the reaction solvent used in the imidization, more preferably from 50 ° C to the boiling point of the reaction solvent used in the imidation, and the heating time is 0.5-
- the temperature is lower than 0 ° C, the imidation ratio may be low, which is not preferable. On the other hand, heating at 150 ° C. or less is preferable to prevent coloring of the polyimide.
- aliphatic acid anhydrides such as acetic anhydride may be used.
- aromatic acid anhydrides Use of acetic anhydride is suitable for the precipitation process of polyimide resin. /.
- the amount of the imidani-dani promoting agent added to the polyamic acid is 0.5 to 5, more preferably 1 to 5, and still more preferably 2 to 4, when the number of moles of the polyamic acid is 1.
- the force used for S is preferred. If the amount of the imidani-driing promoter is less than the above range, imidization may not proceed sufficiently. On the other hand, if it is too large, the imidation ratio tends to decrease due to the poor solvent used in the precipitation of the polyimide resin powder.
- the amount of the dehydrating agent added to the polyamic acid is preferably 1.2 to 4.0 when the number of moles of the polyamic acid is 1. If the amount of the dehydrating agent is less than 1.2, imidization may not proceed sufficiently, while if it is more than 4, the molecular weight may be reduced or coloring may be caused.
- the method for depositing imide resin is described.
- Various known methods can be selected as a method for depositing the polyimide resin from the solution containing the polyimide resin obtained as described in (1) and (2) above.
- the method of introducing the poor solvent into the polyimide resin solution includes a method of pouring it in droplets and a method of putting it in a thread form, and the method is particularly limited as long as the polyimide resin precipitates in the poor solvent. Not something.
- the shape at the time of precipitation can be precipitated in various forms such as a thread, powder, and flake. Further, these can be used after being pulverized if necessary.
- the poor solvent for the polyimide resin used in the present invention is not particularly limited, but is preferably miscible with the reaction solvent used as the solvent for dissolving the polyimide resin, for example, water, methyl alcohol, Ethyl alcohol, isopropyl alcohol, ethylene glycol, triethylene glycol, 2-butyl alcohol, 2-propyl alcohol, 2-hexynoleanolonecore, cyclopentinoleanolonecore, cyclohexenoleanolonecore, pheno And t-butyl alcohol.
- the reaction solvent used as the solvent for dissolving the polyimide resin for example, water, methyl alcohol, Ethyl alcohol, isopropyl alcohol, ethylene glycol, triethylene glycol, 2-butyl alcohol, 2-propyl alcohol, 2-hexynoleanolonecore, cyclopentinoleanolonecore, cyclohexenoleanolonecore, pheno And t-butyl alcohol.
- secondary or tertiary alcohols such as ethyl alcohol, cyclohexyl alcohol, and t-butyl alcohol stabilize the imidation ratio of the obtained polyimide resin to a high level
- 2-propyl is preferable from the viewpoint of Alcohols are more preferred.
- the amount of the poor solvent is preferably at least twice, more preferably at least three times, the amount of the polyimide resin solution.
- the method for drying the solidified resin according to the present invention may be vacuum drying or hot air drying.
- coloring during drying may be a problem, so it is desirable to carry out at 150 ° C or less.
- the soluble polyimide of the present invention can be used for forming a polyimide coating solution obtained by dissolving a polyimide solution in a solvent, and further using the polyimide solution for forming a laminated member, an optical compensation member and the like.
- the laminated member, the optical compensation member and the like may be unstretched or formed with stretching. When performing stretching, it is preferable to perform stretching before or during drying because the Tg of the soluble polyimide is relatively high.
- a reaction vessel equipped with a glass separable flask as a reaction vessel, two paddle blades as a stirring device in the separable flask, and a cooling device having a cooling capacity of 20.9 kjZmin. was used to produce a polyamic acid.
- a nitrogen gas which had been passed through silica gel and dehydrated was passed at 0.05 LZmin to carry out the polymerization reaction in order to prevent water from being mixed.
- the viscosity of the polyamic acid solution was kept for 1 hour in a water bath kept at 23 ° C, and the viscosity at that time was measured with a B-type viscometer using a rotor of No. 7 and a rotation speed of 4 rpm.
- the charged concentration of the aromatic diamine conjugate and the aromatic tetracarboxylic dianhydride was 30% by weight based on the total reaction solution.
- the polyimide slurry was taken out, and 5 L of 2-propyl alcohol was added thereto to completely extract the solid content. Then, the solid content was heated and dried at 100 ° C. by a vacuum drying device, and was taken out as a polyimide resin.
- the polyimide was dispersed in DMF and MIBK so that the solid content was 15%, and the polyimide resin was completely dispersed in the solution.Then, the temperature was maintained at 23 ° C for 24 hours. It was placed in a room and the force of complete dissolution was confirmed. Completely dissolved is indicated by ⁇ , and completely dissolved is indicated by X, and is shown in Table 1.
- the solubility of the soluble polyimide of the present invention is not limited to the solubility in the specific solvent.
- Polyimide resin was dissolved in MIBK or DMF to prepare a polyimide solution containing 10% by weight of polyimide.
- the MIBK solution was used for the polyimide dissolved in MIBK
- the DMF solution was used for the polyimide dissolved only in DMF.
- the direction having the largest refractive index in the plane was defined as the X direction
- the direction perpendicular to the X direction was defined as the Y direction
- the thickness direction was defined as the Z direction.
- a trapezoidal piece was cut out parallel to the X and Y directions, and a sample for birefringence measurement with a height of the trapezoidal piece (hereinafter, referred to as d) of about 200 to 300 / ⁇ was obtained. Obtained.
- the birefringence was measured using a D line ( ⁇ : 589 nm) of a sodium lamp. Stand a sample for measuring the birefringence of a trapezoidal piece as shown in Fig. 2 (length of the lower side> length of the upper side), and apply monochromatic polarized light from below the sample in the X and Z directions or the Y and Z directions. Illuminate perpendicular to the direction. Monochromatic polarized light was incident at an angle of 45 ° to the Z-direction side of the measurement sample, and the slope of the measurement sample was observed from above (A in the figure) under the cross-col.
- the birefringence can also be calculated for the phase difference when the height (d) of the measurement sample is the optical path length. In this way, the birefringence of the two birefringence measurement samples was calculated.
- the interference fringes appearing on the slope are not observed almost parallel to the thickness direction, a major factor is that the cross section of the sample becomes oblique! If the interference fringes are not observed almost parallel to the thickness direction, it is necessary to prepare the sample again.
- the birefringence in the plane and in the thickness direction (may be simply referred to as birefringence in the present invention) in the present invention was calculated by the following equation.
- the refractive indexes in the X, Y, and Z directions are n, n, and n.
- Birefringence (An + ⁇ ) / 2
- the polyimide film used in the birefringence measurement was measured with an ultraviolet-visible absorption spectrophotometer CiASCO Ubset-30).
- the coloring amount N is represented by the following formula:
- Thickness of polyimide resin film (// m)
- A 5: Produced in the same manner as in Example 1 except that 5) was used.
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- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
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- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
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Abstract
Description
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| JP2004163897 | 2004-06-01 | ||
| JP2004-163897 | 2004-06-01 |
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| CN102604385B (zh) * | 2012-03-27 | 2013-07-24 | 清华大学 | 一种无色高透明柔性聚酰亚胺薄膜及其制备方法 |
| JP7076939B2 (ja) * | 2016-07-19 | 2022-05-30 | 株式会社ジャパンディスプレイ | 光配向膜用ワニス及び液晶表示装置 |
| CN112334511B (zh) * | 2018-06-28 | 2023-06-20 | 株式会社钟化 | 聚酰亚胺树脂及其制造方法、以及聚酰亚胺薄膜及其制造方法 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137881A (ja) * | 2004-11-12 | 2006-06-01 | Kaneka Corp | 可溶性ポリイミド及び光学補償部材 |
| KR101569222B1 (ko) | 2007-10-26 | 2015-11-13 | 닛신보 홀딩스 가부시키 가이샤 | 카르보디이미드 변성 가용성 폴리아미드, 그 제조 방법 및 카르보디이미드 변성 가용성 폴리아미드 용액 |
| JP2014501301A (ja) * | 2010-12-31 | 2014-01-20 | コーロン インダストリーズ インク | 透明ポリイミドフィルムおよびその製造方法 |
| WO2016010003A1 (ja) * | 2014-07-17 | 2016-01-21 | 旭化成イーマテリアルズ株式会社 | 樹脂前駆体及びそれを含有する樹脂組成物、ポリイミド樹脂膜、樹脂フィルム及びその製造方法 |
| JP2017019264A (ja) * | 2015-07-07 | 2017-01-26 | 律勝科技股▲分▼有限公司 | ポリイミド樹脂を含有する金属積層板及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2005118686A1 (ja) | 2008-04-03 |
| TW200609271A (en) | 2006-03-16 |
| CN1961031A (zh) | 2007-05-09 |
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