WO2008156186A1 - 光学フィルム - Google Patents
光学フィルム Download PDFInfo
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- WO2008156186A1 WO2008156186A1 PCT/JP2008/061379 JP2008061379W WO2008156186A1 WO 2008156186 A1 WO2008156186 A1 WO 2008156186A1 JP 2008061379 W JP2008061379 W JP 2008061379W WO 2008156186 A1 WO2008156186 A1 WO 2008156186A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/16—Aliphatic-aromatic or araliphatic polycarbonates
- C08G64/1608—Aliphatic-aromatic or araliphatic polycarbonates saturated
-
- 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
- C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
- C08G64/16—Aliphatic-aromatic or araliphatic polycarbonates
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- 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
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
- C09K2323/03—Viewing layer characterised by chemical composition
- C09K2323/031—Polarizer or dye
-
- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133637—Birefringent elements, e.g. for optical compensation characterised by the wavelength dispersion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31507—Of polycarbonate
Definitions
- the present invention relates to an optical film.
- the present invention relates to an optical film having desired wavelength dispersion characteristics, a low photoelastic constant, and high heat resistance.
- the optical film is used as a retardation film and a protective film for a polarizing plate.
- the retardation film is used in liquid crystal display devices and the like, and has functions such as color compensation, viewing angle expansion, and antireflection.
- As the retardation film a ⁇ 4 plate and a ⁇ ⁇ 2 plate are known, and polycarbonate, polyethersulfone, and polysulfone are used as the material.
- the ⁇ 4 plate and ⁇ 2 plate made of these materials have the property that the phase difference increases as the wavelength becomes shorter. For this reason, the wavelength that can function as the ⁇ 4 plate and the ⁇ 2 plate is limited to a specific wavelength.
- Patent Document 1 Japanese Patent Laid-Open No. 2-102084.
- This method requires a step of bonding a plurality of retardation films, a step of adjusting the bonding angle, and the like, and has a problem in productivity.
- the entire thickness of the retardation film is increased, there is a problem in that the light transmittance is lowered and increased.
- Patent Document 2 a method of controlling the wavelength in a wide band with a single film without performing such lamination.
- Patent No. 3 3 2 5 5 60: Patent Document 2 This is a method using a polycarbonate copolymer comprising a unit having a positive refractive index anisotropy and a unit having a negative refractive index anisotropy.
- this polycarbonate copolymer contains a unit derived from fluorene-based bisphenol, the melting temperature is high, and there is a problem that a gel product due to decomposition is easily generated during melt processing.
- the glass transition temperature (T g) is high, and a high temperature is required for film stretching. It requires special processing equipment different from the above.
- T g glass transition temperature
- Patent Document 3 a polycarbonate copolymer having a low photoelastic constant using an aliphatic diol for use in an optical fiber, an optical disk or the like has already been proposed (Patent No. 3160209: Patent Document 3).
- Patent Document 3 does not discuss film stretching or wavelength dispersion.
- the photoelastic constant of the polycarbonate copolymer described in this document needs to be further reduced when used as a protective film for a retardation film or a polarizing plate.
- a retardation film made of a polycarbonate copolymer containing a fluorene-based bisphenol skeleton has also been proposed (International Publication No. 01Z009649, Pamphlet: Patent Document 5, JP-A-2006-323254, Patent Document 6).
- Patent Document 7 A polarizing plate protective film made of a polycarbonate copolymer containing a fluorene-based bisphenol skeleton has also been proposed (Patent No. 3995387: Patent Document 7).
- Patent Document 1 Japanese Patent Laid-Open No. 2-120804
- Patent Document 2 Japanese Patent No. 3325560
- Patent Document 3 Japanese Patent No. 3160209
- Patent Document 4 International Publication No.06Z041190
- Patent Document 5 International Publication No. 01/009649
- Patent Document 6 Japanese Unexamined Patent Publication No. 2006-323254
- Patent Document 7 Japanese Patent No. 3995387 Disclosure of the invention
- An object of the present invention is to provide an optical film that exhibits reverse wavelength dispersion that decreases as the retardation becomes shorter, and has a low photoelastic constant.
- the present inventor has found that a polycarbonate copolymer of a diol having a fluorene structure in the side chain and an aliphatic diol is excellent in melt processability and can be easily stretched. Further, the stretched film from the polycarbonate copolymer showed reverse wavelength dispersibility that became smaller as the retardation became shorter, and the photoelastic constant was found to be low, thus completing the present invention.
- the present invention has the following formula:
- R 2 each independently represent a hydrogen atom, a hydrocarbon group or a halogen atom that may contain an aromatic group having 1 to 10 carbon atoms
- R 3 and R 4 each independently represent carbon.
- R 5 to R 8 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
- R (450), R (550) and R (650) represent retardation values in the film plane at wavelengths of 450 nm, 550 nm and 650 nm, respectively.
- the present invention provides the following formulas (2) and (3)
- the optical film satisfying the above is included.
- the present invention also provides the following formulas (4) to (6)
- the optical film satisfying the above is included.
- the present invention also provides the following formula (7)
- the optical film of the present invention comprises a polycarbonate copolymer containing the unit (A) and the unit (B).
- the unit (A) is represented by the following formula.
- R 2 each independently represent a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 10 carbon atoms, or a halogen atom.
- the hydrocarbon group includes an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 10 carbon atoms, and a carbon number of 1 to An alkenyl group of 10 is mentioned.
- the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom.
- R 3 and R 4 each independently represent a hydrocarbon group that may contain an aromatic group having 1 to 10 carbon atoms.
- the hydrocarbon group is preferably an alkylene group having 1 to 10 carbon atoms, more preferably an alkylene group having 1 to 4 carbon atoms, and more preferably an ethylene group.
- P and q represent the number of repetitions of one (R 3 — ⁇ ) — and ( ⁇ —R 4 ) —, respectively.
- p and Q are each independently an integer of 0 or more, preferably an integer of 0 to 20, more preferably an integer of 0 to 12, even more preferably an integer of 0 to 8, particularly preferably 0.
- n each independently represents an integer of 0 to 4.
- the unit (A) is represented by the following formula (hereinafter sometimes referred to as the unit (A 1)).
- R 2 is the same as unit (A).
- the unit (A1) is 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis (4-hydroxy_3-methylphenyl) fluorene, 9,9-bis (4-hydroxy-3-ethylphenyl) fluorene, 9,9-bis (4-hydroxyl-3-n-propylphenyl) fluorene, 9,9-bis (4-hydroxy-1-isopropylphenyl) fluorene, 9,9-bis (4-hydroxy-1-3_n— Butylphenyl) Fluorene, 9,9-bis (4-hydroxy-1-3-sec-butylphenyl) Fluorene, 9,9-bis (4-hydroxy-3--tert-propylphenyl) fluorene, 9,9-bis (4-hydroxy) Units derived from 1-cyclohexylphenyl) fluorene, 9,9-bis (4-hydroxy-3-phenylphenyl) fluorene, etc. It is.
- the compounds for deriving these units (A1) can be
- the polycarbonate copolymer containing the unit (A2) The b value of a solution dissolved in 0 ml measured at an optical path length of 30 mm is preferably 6.0 or less, more preferably 5.5 or less, and even more preferably 5.0 or less. If this b value is within the above range, the optical film formed from the polycarbonate copolymer has good hue and high strength.
- 9,9-bis (4-hydroxy-3-methylphenyl) fluorene the raw material of the unit (A 2), is obtained by the reaction of o-cresol and fluorenone.
- Low 9,9-bis (4-hydroxy-1-3-methylphenyl) fluorene can be obtained by removing impurities.
- unreacted o-cresol is distilled off, and the residue is dissolved in an alcohol-based, ketone-based or benzene derivative-based solvent.
- the product crystallized from the filtrate can be filtered to obtain purified 9,9_bis (4-hydroxy-3-methylphenyl) fluorene.
- impurities to be removed include 2,4′-dihydroxy form, 2,2′-dihydroxy form and impurities of unknown structure.
- the alcohol solvent used for such purification is preferably a lower alcohol such as methanol, ethanol, propanol, or bubutanol.
- ketone solvent lower aliphatic ketones such as acetone, methyl ethyl ketone, methyl isopropyl ketone, and cyclohexanone, and mixtures thereof are preferable.
- benzene derivative solvent toluene, xylene, benzene and a mixture thereof are preferable.
- the amount of the solvent used is sufficient if it is sufficiently soluble in the fluorene compound, and is usually about 2 to 10 times the amount of the fluorene compound.
- the activated clay commercially available powdery or granular silica-alumina is used as the main component.
- activated carbon commercially available powdered or granular materials are used.
- the unit (A) is represented by the following formula (hereinafter sometimes referred to as the unit (A 3)).
- the unit (A3) is 9,9-bis [4 (2-hydroxyethoxy) phenyl] fluorene, 9,9-bis [4 (3-hydroxypropoxy) phenyl] fluorene, 9,9-bis [ 4- (4-Hydroxybutoxy) phenyl] fluorene, 9, 9-bis [4 (2-hydroxyethoxy) —3-methylphenyl] fluorene, 9,9-bis [2- (2-hydroxyethoxy) —Methylphenyl] fluorene, 9, 9-bis [4 (2-hydroxyethoxy) 1 3-ethylphenyl] fluorene, 9, 9 bis [4- (2-hydroxyethoxy) 1-3 —propylphenyl] Fluorene, 9,9-bis [4 (2-hydroxyethoxy) -1-3-isopropylphenyl] fluorene, 9, 9-bis [4- (2-hydroxyethoxy) -1-3-n-butylphenyl] fluorene, 9, 9
- 9,9-bis [4-1- (2-hydroxyethoxy) phenyl] fluorene 9,9-bis [4- (2-hydroxyethoxy) -1-3-methylphenyl] fluorene ⁇ and the like are preferable.
- a unit (A4) derived from 9,9-bis [4 (2-hydroxyethoxy) phenyl] fluorene (BPEF) represented by
- the compounds that derive these units (A3) may be used alone or in combination of two or more. It can also be used.
- the compound from which the unit (A3) is derived is obtained by reacting 9,9-bis (hydroxyphenyl) fluorenes with compounds corresponding to the groups R 3 and R 4 (alkylene oxide, halo-alcohol etc.) Is obtained.
- 9,9-bis [4- (2-hydroxyethoxy) phenyl] fluorene is obtained by adding ethylene oxide to 9,9-bis (4-hydroxyphenyl) fluorene.
- 9,9-bis [4-1- (3-hydroxypropoxy) phenyl] fluorene for example, reacts 9, 9-bis [4-hydroxyphenyl] fluorene with 3-chloropropanol under alkaline conditions Can be obtained.
- 9,9-bis (hydroxyphenyl) fluorene can be obtained by reaction of fluorenone (9-fluorenone, etc.) with the corresponding phenol.
- 9,9-bis (4-hydroxyphenyl) fluorene can be obtained, for example, by the reaction of phenol with 9-fluorenone.
- R 5 to R 8 each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
- the alkyl group is preferably an alkyl group having 1 to 3 carbon atoms.
- a methyl group is particularly preferable.
- Unit (B) is a unit derived from a dihydroxy compound having a spiro ring having a low photoelastic constant and high heat resistance.
- Unit (B) is 3,9-bis (1,1,1-dimethyl-2-hydroxyethyl) -2,4,8,10-tetraoxaspiro [5,5] undecane, 3,9-bis (1, 1-jetyl-2-hydroxyethyl) -2,4,8,10-tetraoxaspiro [5,5] undecane), 3,9-bis (1,1-dipropyl-1-2-hydroxychetyl) -2, 4, 8 , 10-Tetraoxaspiro [5, 5] Undecane isotropic force, unit force derived from S. (Unit (B l))
- the molar ratio (AZ B) of the unit (A) to the unit (B) is from 10Z90 to 9010.
- the molar ratio (AZB) is less than 10Z90, the glass transition temperature of the polycarbonate copolymer is lower than 110 and the heat resistance is lowered.
- the molar ratio (AZB) exceeds 90Z10, the glass transition temperature of the polycarbonate copolymer becomes high, which causes a problem in workability.
- the photoelastic constant exceeds 30 X 10- 12 P a- 1.
- the molar ratio (AZB) is measured and calculated by proton NMR of JNM-AL400 manufactured by JEOL.
- the glass transition temperature (Tg) of the polycarbonate copolymer is preferably 110 to 170, and more preferably 110 to 160. If the glass transition temperature (T g) is lower than 11 ot :, the heat resistance stability is poor, and the retardation value may change over time and affect the display quality. On the other hand, if the glass transition temperature (Tg) is higher than 170, it is difficult to form a melt film by using too high a viscosity.
- the glass transition temperature (T g) is measured using a 2910 type DSC manufactured by TI Instruments Japan Co., Ltd. at a heating rate of 20 V / min.
- the absolute value of photoelastic constant of the polycarbonate one Bok copolymer preferably 3 OX 10 one 12 P a- 1 or less, more preferably 25 X 10- 12 P a- 1 or less, more preferably 20 X 10- 12 P a— 1 or less. And the absolute value is larger than 30 X 10- 12 P a -1, a large birefringence due to stress, light omission when used as a retardation film Oko It is not preferable.
- the photoelastic constant is measured using a Spectroellips ome ter M-220 manufactured by JASCO Corporation by cutting a 50 mm long and 10 mm wide test piece from the film.
- the temperature (Td) of 5% weight loss due to heat of the polycarbonate copolymer is preferably 380 or more, more preferably 400 or more. 5% weight loss temperature
- the 5% weight loss temperature (Td) was 1111 11 at 20 m under a nitrogen flow of 40 m 1 in using TGA 951 Tera mo gravi me tricana 1 yzer manufactured by DUPONT. Measure thermogravimetrically at the speed and determine the temperature when the 5% weight is reduced.
- the polycarbonate copolymer can be produced by melt polymerization of a full orange hydroxy component, an aliphatic diol component and a carbonic acid diester.
- Examples of the carbonic acid diester include esters such as an aryl group having 6 to 12 carbon atoms and an aralkyl group which may be substituted. Specific examples include diphenyl carbonate, ditolyl carbonate, bis (black phenyl) carbonate, and m-cresyl carbonate. Of these, diphenyl carbonate is particularly preferred.
- the amount of diphenyl carbonate to be used is preferably 0.97 to 1.10 mol, more preferably 1.00 to 1.06 mol, per 1 mol of the total dihydroxy compound.
- a polymerization catalyst can be used in order to increase the polymerization rate.
- the polymerization catalyst include alkali metal compounds, alkaline earth metal compounds, nitrogen-containing compounds, and metal compounds.
- organic acid salts organic acid salts, inorganic salts, oxides, hydroxides, hydrides, alkoxides, quaternary ammonium hydroxides, and the like of alkali metals and alkaline earth metals are preferably used.
- alkali metal compounds include sodium hydroxide, potassium hydroxide, cesium hydroxide, lithium hydroxide, sodium bicarbonate, sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, sodium acetate, potassium acetate, cesium acetate, lithium acetate.
- Alkaline earth metal compounds include magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate, magnesium diacetate, calcium diacetate, strontium diacetate, diacetate Barium etc. is mentioned.
- nitrogen-containing compounds include alkyl such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide, Quaternary ammonium hydroxides having aryl groups and the like are listed.
- alkyl such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide, Quaternary ammonium hydroxides having aryl groups and the like are listed.
- tertiary amines such as triethylamine, dimethylpentylamine, and triphenylamine
- imidazoles such as 2-methylimidazole, 2-phenylimidazole, and benzimi
- bases or basic salts such as ammonia, tetramethylammonium borohydride, tetraptylammonium borohydride, tetraptylammonium tetraphenylporate, tetraphenylammonium tetraphenylate, etc.
- the metal compound include a zinc aluminum compound, a germanium compound, an organic tin compound, an antimony compound, a manganese compound, a titanium compound, and a zirconium compound. These compounds may be used alone or in combination of two or more.
- the amount of the polymerization catalyst preferably with respect to the diol component per mol of 1 X 1 0 one 9 ⁇ 1 X 1 0- 2 equivalents, preferably 1 X 1 0- 8 ⁇ : LX 1 0- 5 equivalents, and more preferably rather it is selected in the range of 1 X 1 cr 7 ⁇ i X 1 0- 3 eq.
- the melt polycondensation reaction is carried out by distilling a monohydroxy compound produced by stirring with heating in an inert gas atmosphere and under reduced pressure, as is conventionally known.
- the reaction temperature is usually in the range of 120 to 35, and in the latter stage of the reaction, the reaction is carried out by increasing the degree of vacuum of the system to 10 to 0.1 Torr to facilitate the distillation of the monohydroxy compound produced.
- a catalyst deactivator can be added at a later stage of the reaction.
- a known catalyst deactivator is effectively used. Among them, sulfonic acid ammonium salt and phosphonium salt are preferable.
- salts of dodecylbenzenesulfonic acid such as tetrabutylphosphonium salt of dodecylbenzenesulfonic acid, and salts of paratoluenesulfonic acid such as paratoluenesulfonic acid tetraptylammonium salt are preferable.
- esters of sulfonic acid methyl benzenesulfonate, ethyl benzenesulfonate, butyl benzenesulfonate, octyl benzenesulfonate, phenyl benzenesulfonate, methyl paratoluenesulfonate, ethyl paratoluenesulfonate, paratoluenesulfonic acid Butyl, octyl p-toluenesulfonate, phenyl-toluenesulfonate, etc. are preferably used.
- dodecylbenzenesulfonic acid tetrabutylphosphonium salt is most preferably used.
- the amount of these catalyst deactivators used is preferably 0 per mole of the catalyst when at least one polymerization catalyst selected from Al-rich metal compounds and Z- or Al-rich earth metal compounds is used. It can be used in a proportion of 5 to 50 mol, more preferably in a proportion of 0.5 to 10 mol, and still more preferably in a proportion of 0.8 to 5 mol.
- This optical film is a film used for optical applications.
- Specific examples include a retardation film, a Bracel substrate film, a polarizing plate protective film, an antireflection film, a brightness enhancement film, an optical disk protective film, and a diffusion film.
- a retardation film and a polarizing plate protective film are preferable.
- Examples of the method for producing an optical film include known methods such as a solution casting method, a melt extrusion method, a heat pressing method, and a calendar method.
- the melt extrusion method is preferable from the viewpoint of productivity.
- a method in which a resin is extruded using a T die and sent to a cooling roll is preferably used.
- the temperature at this time is determined by the molecular weight, Tg, melt flow characteristics, etc. of the poly-bonate copolymer, but it is in the range of 180 to 35, and in the range of 20 to 30. Is more preferable. If it is lower than 1800, the viscosity will be high, and polymer orientation and stress strain will tend to remain, which is not preferable. On the other hand, if it is higher at 3500, problems such as thermal deterioration, coloring, and die line (stripe) from the T-die are likely to occur.
- the polycarbonate copolymer used in the present invention has good solubility in an organic solvent
- a solution casting method can also be applied.
- the solution casting method methylene chloride, 1,2-dichloroethane, 1,1,2,2-tetrachloroethane, dioxolane, dioxane and the like are preferably used as the solvent.
- the amount of residual solvent in the film used in the solution casting method is preferably 2% by weight or less, more preferably 1% by weight or less. If it exceeds 2% by weight, if the residual solvent is large, the glass transition temperature of the film is remarkably lowered, which is not preferable from the viewpoint of heat resistance.
- the thickness of the unstretched optical film of the present invention is preferably in the range of 30 to 400 im, more preferably in the range of 40 to 300 m.
- a film When such a film is further stretched to obtain a retardation film, it may be appropriately determined within the above range in consideration of a desired retardation value and thickness of the optical film.
- the unstretched optical film thus obtained is stretched and oriented to form a retardation film.
- Stretching methods include longitudinal uniaxial stretching, transverse uniaxial stretching using ten tenn etc., or a combination of them. Known methods such as combined simultaneous biaxial stretching and sequential biaxial stretching can be used. Also, it is preferable to carry out continuously in terms of productivity, but it may be carried out batchwise.
- the stretching temperature is preferably in the range of (Tg-2O) to (Tg + 50), more preferably (at Tg_10) to (Tg + 30) with respect to the glass transition temperature (Tg) of the polycarbonate copolymer. In the range). This temperature range is preferable because the molecular motion of the polymer is appropriate, relaxation due to stretching is unlikely to occur, orientation is easily suppressed, and a desired Re value is easily obtained.
- the draw ratio is the force determined by the desired retardation value.
- the stretching may be performed in one stage or in multiple stages.
- the Tg in the case of stretching a film obtained by the solution casting method means a glass transition temperature containing a trace amount of solvent in the film.
- the optical film of the present invention is characterized in that in the visible light region having a wavelength of 400 to 800 nm, the retardation in the film plane becomes smaller as the wavelength becomes shorter. That is, the following formula (1)
- R (450), R (550) and R (650) represent retardation values in the film plane at wavelengths of 450 nm, ⁇ 0 nm, and 650 nm, respectively.
- the in-plane retardation value R is defined by the following equation, and is a characteristic that expresses the phase lag between the X direction of light transmitted in the direction perpendicular to the film and the Y direction perpendicular thereto.
- n x is a refractive index in a slow axis (highest refractive index axis) in the film plane
- n y is a refractive index of n x and the vertical direction in the film plane
- d is the thickness of the film is there.
- the thickness of the optical film of the present invention is preferably in the range of 20 to 200 m, more preferably 20 to 150 im. If it is this range, it is desired by stretching. A retardation value is easily obtained, and film formation is also easy and preferable.
- the optical film of the present invention has a low photoelastic constant of the polycarbonate copolymer constituting it. Therefore, the change of the phase difference with respect to the stress is small, and the liquid crystal display device provided with such a phase difference film has excellent display stability.
- the optical film of the present invention has high transparency.
- the total light transmittance of the optical film of the present invention having a thickness of 100 / m is preferably 85% or more, more preferably 88% or more.
- the haze value of the optical film of the present invention is preferably 5% or less, more preferably 3% or less.
- the film of the present invention can be used for a retardation film.
- the present invention includes a liquid crystal display device provided with the retardation film.
- the present invention includes a circularly polarizing film comprising the film of the present invention and a polarizing layer.
- the present invention includes a display element using the above circularly polarizing film as an antireflection film.
- Preferred embodiments of the film of the present invention include the following film (I) to film (V I).
- Film (I) has the following formulas (2) and (3)
- the film (I) is suitably used for a retardation film such as a liquid crystal display device.
- the film (I) more preferably satisfies the following conditions.
- Film (I) Particularly preferably satisfies the following conditions. 0. 7 ⁇ R (4 ⁇ 0) / R (550) ⁇ 0. 88 (2-3) 1. 04 ⁇ R (650) / R (550) ⁇ 1.20 (3— 3) Film (I)
- the retardation value R (55 0) in the film plane at a wavelength of 550 nm is preferably R (550)> 50 nm.
- Film (I) can be used as a wide-band ⁇ / 4 plate or ⁇ / 2 plate without lamination.
- R and R 2 , m and n are as described above ;
- R 5 to R 8 are as described above.
- the molar ratio (A1 / B) between the unit (A1) and the unit (B) is 10Z90 or more and less than 40 60, and the absolute value of the photoelastic constant is 20 X 1 0— It is preferably 12 Pa 1 or less.
- the molar ratio (A 1 / B) between the unit (A1) and the unit (B) is more preferably 20-80 or more and less than 40Z60.
- the polycarbonate copolymer of film (I) has the following formula:
- the molar ratio (A2 / B 1) of the unit (A2) to the unit (B 1) is preferably 10 Z90 or more and less than 40/60, more preferably 20Z80 or more and less than 40 60.
- Film (I I) has the following formulas (2) and (3)
- the film (I I) is suitably used for retardation films such as liquid crystal display devices.
- the film (I I) more preferably satisfies the following conditions.
- Film (II) is More preferably, the following conditions are satisfied.
- p and q each independently represent an integer of 1 or more.
- R 2 , R 3 , R 4 , m and n are as described above.
- R 5 to R 8 are as described above.
- the molar ratio of unit (A3) to unit (B) (A3 no B) is in the range of 10 90 or more and less than 65 no 35, and the absolute value of the photoelastic constant is 25 it is preferable that the X 10- 12 P a 1 or less.
- the mole ratio (A3ZB) of the unit (A3) to the unit (B) is more preferably 20Z80 to 60Z40.
- the polycarbonate copolymer of film (I I) has the following formula:
- Unit (A4) and the following formula It is preferable that the unit (B1) represented by these is included.
- the molar ratio (A4ZB 1) between the unit (A4) and the unit (B 1) is preferably 10 to 90 or more and less than 65 to 35, more preferably 20Z80 to 60Z40.
- the film (I I I) more preferably satisfies the following conditions.
- Film (I I I) is excellent in transparency.
- the film (I I I) has low optical anisotropy. That is, the film (I I I) has an in-plane retardation value close to zero at a wavelength of 400 to 800 nm. Therefore, it can be used for a protective film for a polarizing plate of a liquid crystal display device.
- the polycarbonate copolymer of film I I I) has the following formula:
- R 2 , m and n are as described above.
- R 5 to R 8 are as described above.
- the molar ratio of unit (A1) to unit (B) (A1 B) is 40Z60 or more and less than 60/40, and the absolute value of the photoelastic constant is 25 X 1 0 It is preferably 1 12 Pa- 1 or less.
- the molar ratio (A 1 / B) between the unit (A1) and the unit (B) is preferably 45 55 to 55Z45.
- the unit (B1) represented by these is included.
- the molar ratio (A2ZB 1) of the unit (A2) to the unit (B 1) is preferably 40Z60 or more and less than 60Z40, more preferably 45/55 to 55/45.
- Film (IV) satisfies the following conditions (4) to (6).
- the film (IV) more preferably satisfies the following conditions.
- Film (IV) is excellent in transparency. Film (IV) has low optical anisotropy. That is, film (IV) is filled at a wavelength of 400 to 800 nm. The in-plane phase difference value is close to zero. Therefore, it can be used as a protective film for a polarizing plate of a liquid crystal display device.
- the polycarbonate copolymer of film (IV) has the following formula:
- p and q each independently represent an integer of 1 or more.
- R 2 , R 3 , R 4 , m and n are as described above.
- R 5 to R 8 are as described above.
- the molar ratio (A3Z B) between unit (A3) and unit (B) is 65 35 or more and less than 82/18, and the absolute value of the photoelastic constant is 30 X 1 0 It is preferably 1 12 Pa- 1 or less.
- the molar ratio (A3 / B) of the unit (A3) to the unit (B) is preferably 65Z35-8020.
- the polycarbonate copolymer has the following formula:
- the unit (B1) represented by these is included.
- the molar ratio (A4ZB 1) of the unit (A4) to the unit (B 1) is preferably 65/35 or more and less than 82X18, more preferably 65 35 to 80Z20.
- Film (V) preferably satisfies the following conditions.
- Film (V) has negative birefringence, so it is in the order of in-plane switching (IP s> mode LCDs. Suitable for phase difference film.
- the polycarbonate copolymer of film V has the following formula:
- R, R 2 , m and n are as described above.
- R 5 to R 8 are as described above.
- the molar ratio (A1Z B) between unit (A1) and unit (B) is 60Z40 or more and 90Z10 or less, and the absolute value of photoelastic constant is 30 X 1 0 1 12 P a- 1 is preferably 1 or less.
- the molar ratio (A 1 / B) between the unit (A1) and the unit (B) is preferably 65Z35 to 90Z10.
- the polycarbonate copolymer of film (V) has the following formula:
- the unit (A 2) represented by
- the molar ratio (A2ZB 1) of the unit (A2) to the unit (B 1) is preferably 60Z40 or more and 9010 or less, more preferably eszss sozi 0.
- Film (VI) preferably satisfies the following conditions.
- Film (VI) has negative birefringence, making it an in-plane switching (IPS) mode liquid crystal display retardation film. Is suitable.
- IPS in-plane switching
- the polycarbonate copolymer of film (VI) has the following formula:
- p and q each independently represent an integer of 1 or more.
- R 2 , R 3 , R 4 , m and n are as described above.
- R S to R 8 are as described above.
- the molar ratio (A3 / B) between unit (A3) and unit (B) is 82 18 or more and 90/10 or less, and the absolute value of the photoelastic constant is 30 X 1 0 It is preferable that 12 Pa is 1 or less.
- the polycarbonate copolymer of film (VI) has the following formula:
- the unit (B1) represented by these is included.
- the molar ratio (A4ZB 1) of the unit (A4) to the unit (B 1) is preferably 82 18 or more and 90 or 10 or less.
- parts means “parts by weight”.
- the resins used and the evaluation methods used in the examples are as follows.
- a specimen of 50 mm length and 10 mm width was cut out from the film, and the photoelastic constant was measured using Spectroe 1 1 ips ome ter M—220 manufactured by JASCO Corporation. Was measured.
- a 100 mm long and 70 mm wide test piece was cut from the film and stretched 2.0 times at a stretching temperature of Tg + l Ot: and the resulting film was Spectroe 1 1 ips ome ter M— manufactured by JASCO Corporation. 220 was used to measure the retardation wavelength dispersion.
- Measurement was performed using a 2910 type DSC manufactured by Ti-A Instruments Japan Co., Ltd. under a nitrogen atmosphere at a heating rate of 20 t: / min.
- JNM-AL400 manufactured by JEOL Ltd. was measured by proton NMR, and the polymer composition ratio was calculated.
- the viscosity average molecular weight was measured in a solution of 20 by dissolving 0.7 g of a polycarbonate resin in 10 OmL of methylene chloride.
- the obtained specific viscosity (7 sp ) was inserted into the following equation.
- the temperature was raised to 260 at a rate of Zhr at 20 and held at that temperature for 10 minutes, and then the degree of vacuum was reduced to 133 Pa or less over 1 hour.
- the reaction was carried out with stirring for a total of 6 hours.
- 4 times mole of the catalyst amount of tetrabutyl phosphonate salt of dodecylbenzenesulfonate was added to deactivate the catalyst, then discharged from the bottom of the reaction tank under nitrogen pressure, cooled with a water tank and cut with a pelletizer. To obtain pellets.
- the composition ratio was measured by NMR.
- a T-die with a width of 150 mm and a lip width of 500 m was attached to a 15 ⁇ biaxial extrusion kneader manufactured by Technobel Co., Ltd., and the resulting polycarbonate copolymer was made transparent by film forming.
- An extruded film was obtained.
- a sample with a size of 5 Omm ⁇ 10 mm was cut out from the portion having a thickness of 66 ⁇ 0.8 jam near the center of the obtained film, and the photoelastic constant was measured using the sample.
- Example 2 Except for using 103.37 parts of spiroglycol, 22.68 parts of BCF and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic-aliphatic copolymer polycarbonate. .
- the composition ratio was measured by NMR.
- Example 1 a film (thickness 60 ⁇ 0. was prepared in the same manner as in Example 1.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times with Tg + l 2 O to obtain a stretched film having a length of 20 Omm ⁇ width of 57 mm and a thickness of 42 // m, and retardation measurement and wavelength dispersion were measured. The results are shown in Table 1.
- Example 2 The same procedure as in Example 1 was performed, except that 97.29 parts of spiroglycol, 30.24 parts of BCF and 89.29 parts of diphenyl carbonate were used, to obtain an aromatic monoaliphatic copolymer polycarbonate.
- the composition ratio was measured by NMR.
- Example 1 a film (thickness 61 ⁇ 0.7 m) was prepared in the same manner as in Example 1.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- it was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 42 / m, and the retardation measurement and the wavelength dispersion were measured. The results are shown in Table 1.
- An aromatic-aliphatic copolymer polycarbonate was obtained in the same manner as in Example 1, except that 85.12 parts of spiroglycol, 45.36 parts of BCF, and 89.29 parts of diphenyl carbonate were used.
- the resulting pellets had a viscosity average molecular weight of 19,000.
- the composition ratio was measured by NMR.
- this copolymer was dissolved in methylene chloride to prepare a dope having a solid concentration of 19% by weight.
- a cast film (thickness 61 ⁇ 0.8 m) was produced from this dope solution by a known method.
- the resulting film had a viscosity average molecular weight of 19,000, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- Example 2 In the same manner as in Example 1, the film was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 43 / m, and retardation measurement and wavelength dispersion were measured. The results are shown in Table 1 and Table 2. Show.
- Example 2 Except for using 80.26 parts of spiroglycol, 51.41 parts of BCF and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic monoaliphatic copolymer polycarbonate. It was. The viscosity average molecular weight of the obtained pellet was 19,200. The composition ratio was measured by NMR.
- Example 1 a film (thickness 75 ⁇ 0.8 / m) was prepared in the same manner as in Example 1.
- the resulting film had a viscosity average molecular weight of 19,100, and the difference in viscosity average molecular weight between the pellet and the film was almost 100.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched by 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Ommx a width of 57 mm and a thickness of 45 / zm, and retardation measurement and wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Example 2 Except for using 77.82 parts of spiroglycol, 54.43 parts of BCF and 89.29 parts of diphenyl carbonate, the same procedure as in Example 1 was carried out, and the aromatic monoaliphatic copolymer power I got a Ponate.
- the viscosity average molecular weight of the obtained pellets was 19,600.
- the composition ratio was measured by NMR.
- a film (thickness 70 ⁇ 0. was prepared in the same manner as in Example 1.
- the viscosity average molecular weight of the obtained film was 19,400, and the difference in viscosity average molecular weight between the pellet and the film was almost 200.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1. In the same manner as in Example 1, it was uniaxially stretched at 2.0 times with Tg + 10, length 20 Omm ⁇ width 57 mm, thickness 42 A stretched film was obtained, and retardation measurement and wavelength dispersion were measured, and the results are shown in Tables 1 and 2.
- Example 2 Except for using 75.39 parts of spiroglycol, 57.46 parts of BCF, and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic-aliphatic copolymer polycarbonate. .
- the resulting pellets had a viscosity average molecular weight of 19,400.
- the composition ratio was measured by NMR.
- a film (thickness 78 ⁇ 0. was prepared in the same manner as in Example 1.
- the viscosity average molecular weight of the obtained film was 19,400, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 200 mm ⁇ width of 57 mm and a thickness of 42 m. Phase difference measurement and wavelength dispersion were measured, and the results are shown in Tables 1 and 2.
- An aromatic-aliphatic copolymer polycarbonate was obtained in the same manner as in Example 1, except that 72.97 parts of spiroglycol, 60.49 parts of BCF, and 89.29 parts of diphenyl carbonate were used.
- the viscosity average molecular weight of the obtained pellets was 19,200.
- the composition ratio was measured by NMR.
- Example 2 a film (thickness 6 7 ⁇ 0.8 xm) was produced in the same manner as in Example 1.
- the viscosity average molecular weight of the obtained film was 19,200, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 1 Ot: to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 42 m, and the retardation measurement and the wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Spiroglycol 85 13 parts, 9, 9 one bis [4 one (2-hydroxy ethoxide B) Fluorene (hereinafter abbreviated as BPEF) 52. 63 parts, diphenyl carbonate 89. 29 parts were used in the same manner as in Example 1, except that aromatic monoaliphatic copolymer polystrength was used. I got a bonnet. The composition ratio was measured by NMR.
- Example 1 a film (thickness 66 ⁇ 0.8 / zm) was prepared in the same manner as in Example 1.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times with Tg + l Ot: to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 47 m, and retardation measurement and wavelength dispersion were measured. The results are shown in Table 1.
- Example 2 Except for using 72.96 parts of spiroglycol, 70.16 parts of BPEF, 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic monoaliphatic copolymer polycarbonate. .
- the resulting pellets had a viscosity average molecular weight of 18,800.
- the composition ratio was measured by NMR.
- Example 1 a film (thickness 102 ⁇ 0.7 / m) was produced in the same manner as in Example 1.
- the resulting film had a viscosity average molecular weight of 18,600, and the difference in viscosity average molecular weight between the pellet and the film was almost 200.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Ommx a width of 57 mm and a thickness of 68, and the retardation measurement and the wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Example 2 Except for using 66.88 parts of spiroglycol, 78.93 parts of BPEF and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic monoaliphatic copolymer polycarbonate. .
- the viscosity average molecular weight of the obtained pellet was 17,700.
- the composition ratio was measured by NMR. ⁇ Manufacture of optical films>
- a film (thickness 98 ⁇ 0.8 / zm) was prepared in the same manner as in Example 1.
- the viscosity average molecular weight of the obtained film was 17,400, and the difference in viscosity average molecular weight between the pellet and the film was almost 300.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times at Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 61 m, and retardation measurement and wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Example 2 Except for using 60.8 parts of spiroglycol, 87.7 parts of BPEF, 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was carried out to obtain an aromatic monoaliphatic copolymer polystreptone. .
- the viscosity average molecular weight of the obtained pellet was 18,800.
- the composition ratio was measured by NMR.
- a film (thickness 88 ⁇ 0.8 / zm) was prepared in the same manner as in Example 1.
- the viscosity average molecular weight of the obtained film was 18,600, and the difference between the viscosity average molecular weight of the pellet and the film was almost 200.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 59 / im, and retardation measurement and wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Aromatic-aliphatic copolymerization was carried out in exactly the same manner as in Example 1, except that 54.72 parts of spiroglycol, 96.47 parts of BPEF, and 89.29 parts of diphenyl carbonate were used. Polycarbonate was obtained. The resulting pellets had a viscosity average molecular weight of 19,200. The composition ratio was measured by NMR.
- Example 4 a film (thickness 93 ⁇ 0.8 / m) was prepared in the same manner as in Example 4.
- the viscosity average molecular weight of the obtained film was 19,200, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1. In the same manner as in Example 1, it was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 200 mm ⁇ a width of 57 mm and a thickness of 60 m, and the retardation measurement and the wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Example 2 The same procedure as in Example 1 was performed, except that 48.64 parts of spiroglycol, 105.24 parts of BPEF, and 89.29 parts of diphenyl carbonate were used to obtain an aromatic monoaliphatic copolymer polycarbonate.
- the viscosity average molecular weight of the obtained pellet is 1
- Example 4 a film (thickness 162 soil, 0.7 m) was prepared in the same manner as in Example 4.
- the viscosity average molecular weight of the obtained film was 19,200, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 98 m, and the retardation measurement and the wavelength dispersion were measured. The results are shown in Tables 1 and 2.
- Example 2 Except for using 64.46 parts of spiroglycol, 71.03 parts of BCF and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was carried out to prepare an aromatic monoaliphatic copolymer polycarbonate. Obtained. The composition ratio was measured by NMR.
- Example 4 a film (thickness 67 ⁇ 0. '8 / m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + l Ot: to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 47 / m, and the retardation measurement and the wavelength dispersion were measured. Table 3 shows the results. Shown in
- An aromatic monoaliphatic copolymer polycarbonate was obtained in the same manner as in Example 1 except that 60.81 parts of spiroglycol, 75.61 parts of BCF, and 89.29 parts of diphenyl carbonate were used.
- the composition ratio was measured from NMR.
- Example 4 a film (thickness 66 ⁇ 0.8 m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was stretched 2.0 times at Tg + 10 at 2.0 times to obtain a stretched film having a length of 20011111, a width of 5711111, and a thickness of 47 m, and the retardation measurement and the wavelength dispersion were measured.
- the results are shown in Table 3.
- An aromatic monoaliphatic copolymer polycarbonate was obtained in the same manner as in Example 1 except that 57.16 parts of spiroglycol, 80.15 parts of BCF, and 89.29 parts of diphenyl carbonate were used.
- the composition ratio was measured by NMR.
- Example 4 a film (thickness 68 ⁇ 0.8 ⁇ m) was produced in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1. Similar to Example 1
- Example 2 The same procedure as in Example 1 was conducted, except that 24.32 parts of spiroglycol, 140.34 parts of BPEF, and 89.29 parts of diphenyl carbonate were used, to obtain an aromatic monoaliphatic copolymer polycarbonate.
- the composition ratio was measured by NMR. Manufacturing of optical film>
- Example 4 a film (thickness 67 soil, 0.8 m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times with Tg + l 2 O to obtain a stretched film having a length of 20 Omm ⁇ a width of 57 mm and a thickness of 47 im, and the retardation measurement and wavelength dispersion were measured. The results are shown in Table 3.
- An aromatic-aliphatic copolymer polycarbonate was obtained in the same manner as in Example 1 except that 36.48 parts of spiroglycol, 122.80 parts of BPEF, and 89.29 parts of diphenyl carbonate were used.
- the composition ratio was measured by NMR.
- Example 4 a film (thickness 68 ⁇ 0.8 m) was produced in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- it was uniaxially stretched at 2.0 times with Tg + l O: length 2 ⁇ Omm x width 57 mm, thickness
- Example 2 Except for using 12.16 parts of spiroglycol, 136.1 part of BCF and 89.29 parts of diphenyl carbonate, the same procedure as in Example 1 was performed to obtain an aromatic monoaliphatic copolymer polycarbonate. It was. The composition ratio was measured by NMR.
- Example 4 a film (thickness 68 ⁇ 0.8 m) was produced in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1. Similar to Example 1
- Aromatic-aliphatic copolymerization was carried out in exactly the same manner as in Example 1, except that 18.24 parts of spiroglycol, 128.54 parts of BCF, and 89.29 parts of diphenyl carbonate were used. Polycarbonate was obtained. The composition ratio was measured by NMR.
- Example 4 a film (thickness 67 soil, 0.8 m) was produced in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + lO: to obtain a stretched film having a length of 20 Omm x a width of 57 mm and a thickness of 47 / m, and the retardation measurement and wavelength dispersion were measured. The results are shown in Table 4.
- Example 2 Except for using 24.32 parts of spiroglycol, 120.98 parts of BCF and 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was carried out, and the aromatic-aliphatic copolymer poly Power-bonate was obtained. The composition ratio was measured from NMR.
- Example 4 a film (thickness 67 ⁇ 0.8 ⁇ m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- it was uniaxially stretched 2.0 times with Tg + l Ot, length 20 Omm x width 57 mm, thickness
- Example 2 Except for using 12.16 parts of spiroglycol, 157.88 parts of BPEF, 89.29 parts of diphenyl carbonate, the same operation as in Example 1 was performed to obtain an aromatic monoaliphatic copolymer polycarbonate. It was. The composition ratio was measured by NMR.
- a film (thickness 6 8 ⁇ 0.8 ⁇ m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times with Tg + lO: to obtain a stretched film having a length of 20 Omm x a width of 57 mm and a thickness of 47 zzm, and the retardation measurement and wavelength dispersion were measured. The results are shown in Table 4.
- Example 4 a film (thickness 6 7 ⁇ 0.8 m) was produced in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1. Similar to Example 1
- the film was uniaxially stretched 2.0 times at Tg + l Ot: to obtain a stretched film having a length of 20 Omm x a width of 57 mm and a thickness of 47 m, and the retardation measurement and wavelength dispersion were measured.
- the results are shown in Table 4.
- Polycarbonate resin obtained from 2,2-bis (4-hydroxyphenyl) propane (BPA) (Panlite AD-5503 manufactured by Teijin Chemicals Ltd. (viscosity average molecular weight 1 5, 2 0 0)) ) And a film (thickness 74 (soil 0.8) tim) was prepared in the same manner as in Example 1.
- the resulting film had a viscosity average molecular weight of 15,100, and the difference between the viscosity average molecular weight of the pellet and the film was almost 100.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 1 O: in the same manner as in Example 1 to obtain a stretched film having a length of 20 Omm, a width of 56 mm, and a thickness of 41 / m, retardation measurement, wavelength Dispersibility was measured.
- the results are shown in Table 1, Table 2, and Table 3.
- the film photoelastic constant is as high as 8 0 X 1 0- 12 P a- 1, a large birefringence due to stress. Therefore, retardation film As a result, light leakage occurs, which is not preferable.
- wavelength dispersion is positive dispersion, ⁇ / 4 is not achieved in a wide band, and color loss is a problem.
- a film (thickness 1 64 ( ⁇ 0.8) m) was prepared in the same manner as in Example 4.
- the resulting film had a viscosity average molecular weight of 38,200, and there was no difference in the viscosity average molecular weight between the pellet and the film.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched at 2.0 times with Tg + 10 as in Example 1 to obtain a stretched film having a length of 20 Omm x a width of 56 mm and a thickness of lOO ⁇ m, retardation measurement, wavelength dispersion Was measured.
- the results are shown in Tables 1 and 2.
- the film has a high photoelastic constant 42 X 1 0- 12 P a- 1 , large heard birefringence due stress. Therefore, light leakage occurs when used as a retardation film, which is not preferable.
- a film (thickness 78 ( ⁇ 0.8) rn) was prepared in the same manner as in Example 1.
- the resulting film had a viscosity average molecular weight of 14,600, and the difference in viscosity average molecular weight between the pellet and film was 1,700.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- it was uniaxially stretched at 2.0 times with Tg + 10 to obtain a stretched film having a length of 20 Omm ⁇ width of 57 mm and a thickness of 48 / zm, and retardation measurement and wavelength dispersion were measured.
- Tables 1 and 2 The results are shown in Tables 1 and 2.
- This film has a low 5% weight loss temperature of 3 ⁇ 6, which is not preferable because of the decrease in molecular weight during film formation. Also, since it is a ternary copolymer, the compositional deviation of the monomer containing fluorene is large, which is not preferable.
- a film (thickness 164 ( ⁇ 0.8) urn) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times at Tg + 10 in the same manner as in Example 1 to obtain a stretched film having a length of 200 mm ⁇ width of 56 mm and a thickness of 100 xm, and the retardation measurement and wavelength dispersion were measured. .
- the results are shown in Table 3.
- the film photoelastic constant is as high as 44X 10- 12 P a- 1, a large birefringence due to stress. Therefore, light leakage occurs when used as a retardation film, which is not preferable.
- Example 4 a film (thickness 164 (soil 0.8) m) was prepared in the same manner as in Example 4.
- the photoelastic constant of the obtained film was evaluated in the same manner as in Example 1.
- the film was uniaxially stretched 2.0 times at Tg + 10 at Tg + 10 to obtain a stretched film of length 200 mm x width 56 mm, thickness 100 // m, phase difference measurement, wavelength dispersion It was measured.
- Table 4 This film has a high photoelastic constant of 42X10 1 1 2 Pa- 1 and large birefringence due to stress. Therefore, light leakage occurs when used as a retardation film, which is not preferable.
- Table 1
- the polycarbonate copolymer is excellent in melt processability, an optical film showing desired wavelength dispersibility can be obtained by stretching.
- the optical film of the present invention exhibits reverse wavelength dispersion that decreases as the retardation becomes shorter, and has a low photoelastic constant.
- the optical film of the present invention can be widened with a single sheet.
- the optical film of the present invention is extremely useful as a protective film for retardation films for liquid crystal display devices, organic EL displays and the like. Therefore, the optical film of the present invention is suitably used for a liquid crystal display device, an optical pickup, an optical recording medium, a light emitting element, an optical arithmetic element, an optical communication element, and an evening panel.
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Polyesters Or Polycarbonates (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
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Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020097025271A KR101513317B1 (ko) | 2007-06-19 | 2008-06-17 | 광학 필름 |
US12/452,180 US8877304B2 (en) | 2007-06-19 | 2008-06-17 | Optical film |
CN2008800145323A CN101680987B (zh) | 2007-06-19 | 2008-06-17 | 光学膜 |
AT08765790T ATE543112T1 (de) | 2007-06-19 | 2008-06-17 | Optische folie |
KR1020147026801A KR20140121894A (ko) | 2007-06-19 | 2008-06-17 | 광학 필름 |
EP20080765790 EP2163922B1 (en) | 2007-06-19 | 2008-06-17 | Optical film |
JP2009520573A JP5119250B2 (ja) | 2007-06-19 | 2008-06-17 | 光学フィルム |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-161134 | 2007-06-19 | ||
JP2007161134 | 2007-06-19 | ||
JP2007202113 | 2007-08-02 | ||
JP2007-202113 | 2007-08-02 |
Publications (1)
Publication Number | Publication Date |
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WO2008156186A1 true WO2008156186A1 (ja) | 2008-12-24 |
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ID=40156342
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/061379 WO2008156186A1 (ja) | 2007-06-19 | 2008-06-17 | 光学フィルム |
Country Status (8)
Country | Link |
---|---|
US (1) | US8877304B2 (ja) |
EP (1) | EP2163922B1 (ja) |
JP (1) | JP5119250B2 (ja) |
KR (2) | KR101513317B1 (ja) |
CN (1) | CN101680987B (ja) |
AT (1) | ATE543112T1 (ja) |
TW (1) | TWI417315B (ja) |
WO (1) | WO2008156186A1 (ja) |
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Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6335619A (ja) * | 1986-07-30 | 1988-02-16 | Hitachi Ltd | 光デイスク |
JPH02120804A (ja) | 1988-10-31 | 1990-05-08 | Nitto Denko Corp | 積層位相差板 |
JPH08311191A (ja) * | 1995-05-22 | 1996-11-26 | Mitsubishi Gas Chem Co Inc | 電子写真感光体バインダー用コポリカーボネート重合体 およびその製造方法 |
JPH10101787A (ja) * | 1996-09-30 | 1998-04-21 | Teijin Ltd | ポリカーボネートおよびその製造方法 |
WO2001009649A1 (fr) | 1999-07-29 | 2001-02-08 | Teijin Limited | Film de dephasage, composite de film de dephasage et dispositif d'affichage de cristaux liquides utilisant ceux-ci |
JP3160209B2 (ja) | 1996-01-30 | 2001-04-25 | 帝人株式会社 | オキサスピロウンデカン基を含有するポリカーボネート共重合体およびその製造法 |
JP2001296423A (ja) * | 2000-04-13 | 2001-10-26 | Teijin Ltd | 偏光板保護用透明フィルム及びそれを用いてなる偏光板 |
JP2002048919A (ja) * | 2000-04-25 | 2002-02-15 | Teijin Ltd | 位相差フィルム |
JP3325560B2 (ja) | 1998-10-30 | 2002-09-17 | 帝人株式会社 | 位相差フィルム及びそれを用いた光学装置 |
JP2003294942A (ja) * | 2002-03-29 | 2003-10-15 | Teijin Ltd | 位相差フィルム及びその製造方法 |
JP2003329840A (ja) * | 2002-05-16 | 2003-11-19 | Teijin Ltd | 熱安定性に優れた位相差フィルム、及び偏光変換素子 |
JP2004067990A (ja) * | 2002-06-12 | 2004-03-04 | Mitsubishi Gas Chem Co Inc | ポリカーボネート共重合体 |
WO2006041190A1 (ja) | 2004-10-14 | 2006-04-20 | Teijin Limited | 光弾性定数の低いポリカーボネート及びそれからなるフィルム |
JP2006323254A (ja) | 2005-05-20 | 2006-11-30 | Teijin Ltd | 液晶表示装置およびそれに用いられる光学フィルム |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03160209A (ja) | 1989-11-17 | 1991-07-10 | Matsushita Electric Ind Co Ltd | 排ガス浄化装置 |
EP0787756B1 (en) | 1996-01-30 | 2000-04-26 | Teijin Limited | Polycarbonate copolymer containing oxaspiroundecane group and production process therefor |
-
2008
- 2008-06-17 AT AT08765790T patent/ATE543112T1/de active
- 2008-06-17 KR KR1020097025271A patent/KR101513317B1/ko active IP Right Grant
- 2008-06-17 EP EP20080765790 patent/EP2163922B1/en not_active Not-in-force
- 2008-06-17 JP JP2009520573A patent/JP5119250B2/ja active Active
- 2008-06-17 WO PCT/JP2008/061379 patent/WO2008156186A1/ja active Application Filing
- 2008-06-17 KR KR1020147026801A patent/KR20140121894A/ko not_active Application Discontinuation
- 2008-06-17 US US12/452,180 patent/US8877304B2/en active Active
- 2008-06-17 CN CN2008800145323A patent/CN101680987B/zh active Active
- 2008-06-19 TW TW97122830A patent/TWI417315B/zh not_active IP Right Cessation
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6335619A (ja) * | 1986-07-30 | 1988-02-16 | Hitachi Ltd | 光デイスク |
JPH02120804A (ja) | 1988-10-31 | 1990-05-08 | Nitto Denko Corp | 積層位相差板 |
JPH08311191A (ja) * | 1995-05-22 | 1996-11-26 | Mitsubishi Gas Chem Co Inc | 電子写真感光体バインダー用コポリカーボネート重合体 およびその製造方法 |
JP3160209B2 (ja) | 1996-01-30 | 2001-04-25 | 帝人株式会社 | オキサスピロウンデカン基を含有するポリカーボネート共重合体およびその製造法 |
JPH10101787A (ja) * | 1996-09-30 | 1998-04-21 | Teijin Ltd | ポリカーボネートおよびその製造方法 |
JP3325560B2 (ja) | 1998-10-30 | 2002-09-17 | 帝人株式会社 | 位相差フィルム及びそれを用いた光学装置 |
WO2001009649A1 (fr) | 1999-07-29 | 2001-02-08 | Teijin Limited | Film de dephasage, composite de film de dephasage et dispositif d'affichage de cristaux liquides utilisant ceux-ci |
JP2001296423A (ja) * | 2000-04-13 | 2001-10-26 | Teijin Ltd | 偏光板保護用透明フィルム及びそれを用いてなる偏光板 |
JP3995387B2 (ja) | 2000-04-13 | 2007-10-24 | 帝人株式会社 | 偏光板保護用透明フィルム及びそれを用いてなる偏光板 |
JP2002048919A (ja) * | 2000-04-25 | 2002-02-15 | Teijin Ltd | 位相差フィルム |
JP2003294942A (ja) * | 2002-03-29 | 2003-10-15 | Teijin Ltd | 位相差フィルム及びその製造方法 |
JP2003329840A (ja) * | 2002-05-16 | 2003-11-19 | Teijin Ltd | 熱安定性に優れた位相差フィルム、及び偏光変換素子 |
JP2004067990A (ja) * | 2002-06-12 | 2004-03-04 | Mitsubishi Gas Chem Co Inc | ポリカーボネート共重合体 |
WO2006041190A1 (ja) | 2004-10-14 | 2006-04-20 | Teijin Limited | 光弾性定数の低いポリカーボネート及びそれからなるフィルム |
JP2006323254A (ja) | 2005-05-20 | 2006-11-30 | Teijin Ltd | 液晶表示装置およびそれに用いられる光学フィルム |
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Also Published As
Publication number | Publication date |
---|---|
EP2163922A1 (en) | 2010-03-17 |
KR20140121894A (ko) | 2014-10-16 |
ATE543112T1 (de) | 2012-02-15 |
TWI417315B (zh) | 2013-12-01 |
JPWO2008156186A1 (ja) | 2010-08-26 |
KR20100020458A (ko) | 2010-02-22 |
EP2163922B1 (en) | 2012-01-25 |
CN101680987B (zh) | 2012-02-08 |
US20100104777A1 (en) | 2010-04-29 |
US8877304B2 (en) | 2014-11-04 |
KR101513317B1 (ko) | 2015-04-17 |
TW200916502A (en) | 2009-04-16 |
JP5119250B2 (ja) | 2013-01-16 |
EP2163922A4 (en) | 2010-07-14 |
CN101680987A (zh) | 2010-03-24 |
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