WO2018230123A1 - エステル樹脂、反可塑化剤、セルロースエステル樹脂組成物、光学フィルム及び液晶表示装置 - Google Patents
エステル樹脂、反可塑化剤、セルロースエステル樹脂組成物、光学フィルム及び液晶表示装置 Download PDFInfo
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- WO2018230123A1 WO2018230123A1 PCT/JP2018/015023 JP2018015023W WO2018230123A1 WO 2018230123 A1 WO2018230123 A1 WO 2018230123A1 JP 2018015023 W JP2018015023 W JP 2018015023W WO 2018230123 A1 WO2018230123 A1 WO 2018230123A1
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- ester resin
- acid
- residue
- glycol
- optical film
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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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/78—Benzoic acid esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- 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
Definitions
- the present invention relates to an ester resin suitable as an antiplasticizer for a resin for optical materials, a cellulose ester resin containing the ester resin, an optical film obtained using the resin composition, and a liquid crystal display device using the same.
- TAC triacetyl cellulose resin
- TAC is hard and brittle, there is a problem that when it is formed into a film, the strength is insufficient and breakage easily occurs. Moreover, since TAC has high moisture permeability and dimensional change due to moisture absorption is likely to occur, it is necessary to suppress moisture absorption by additives, and various additives have been provided (see, for example, Patent Document 1).
- the problem to be solved by the present invention is particularly excellent in the balance of strength, moisture permeability and optical properties when processed into a film, and is suitable as an antiplasticizer for optical resins. It is to provide an ester resin that can be used, a resin composition containing the ester resin, an optical film obtained using the resin composition, and a liquid crystal display device using the optical film.
- the present invention provides the following general formula (1) B- (GA) n -GB (1)
- B is a monocarboxylic acid residue
- G is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue
- A is a dicarboxylic residue
- the total mole of A 20 mol% or more of the number is an isophthalic acid residue
- n is the number of repetitions
- G and A may be the same or different for each repetition
- a plurality of B and G may be the same or different .
- the ester resin characterized by these, the resin composition containing this, the optical film obtained using this composition, and the liquid crystal display device using the said optical film are provided.
- an ester resin that has an excellent balance of strength, moisture resistance and optical properties when processed into a film, and can be suitably used as an antiplasticizer for optical resins.
- the specific ester resin particularly in an optical film containing a cellulose ester resin, it is possible to achieve both improvement in elastic modulus, suppression of moisture transmission, and maintenance of optical properties, and as an optical film used in a liquid crystal display device It can be used suitably.
- the ester resin of the present invention has the following general formula (1) B- (GA) n -GB (1)
- B is a monocarboxylic acid residue
- G is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue
- A is a dicarboxylic residue
- the total mole of A 20 mol% or more of the number is an isophthalic acid residue
- n is the number of repetitions
- G and A may be the same or different for each repetition
- a plurality of B and G may be the same or different .
- It is represented by.
- B in the general formula (1) is a monocarboxylic acid residue, and specifically includes an aryl monocarboxylic acid residue or an aliphatic monocarboxylic acid residue.
- the “carboxylic acid residue” refers to a group other than —OH in the carboxy group.
- the aryl monocarboxylic acid residue is an aryl monocarboxylic acid residue having 6 to 12 carbon atoms, which is easy to obtain raw materials, easy to esterify, and mixed with a cellulose ester resin described later.
- benzoic acid dimethylbenzoic acid, trimethylbenzoic acid, tetramethylbenzoic acid, ethylbenzoic acid, propylbenzoic acid, butylbenzoic acid
- examples thereof include cumic acid, para-tert-butylbenzoic acid, orthotoluic acid, metatoluic acid, p-toluic acid, ethoxybenzoic acid, propoxybenzoic acid, anisic acid, naphthoic acid and the like.
- a residue of benzoic acid, p-toluic acid, or dimethylbenzoic acid is preferable, and a residue of benzoic acid is more preferable.
- the number of carbon atoms does not include the carbon atom in the carboxy group. Further, it may be a residue such as nicotinic acid or furoic acid having an aromaticity, which may have a substituent.
- the aliphatic monocarboxylic acid residue is an aliphatic monocarboxylic acid residue having 1 to 8 carbon atoms, which is mixed with raw material availability, ease of esterification reaction, and cellulose ester resin described later. In particular, it is preferable from the viewpoint of easily balancing moisture resistance, elastic modulus, and optical properties.
- residues such as acetic acid, propionic acid, butanoic acid, hexanoic acid, octanoic acid, octylic acid, and the like can be mentioned. More than one species may be present, and acetic acid is particularly preferred.
- the number of carbon atoms does not include the carbon atom in the carboxy group.
- G in the general formula (1) is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue.
- the glycol residue refers to a group after removing a hydrogen atom from a hydroxyl group.
- the alkylene glycol residue is preferably an alkylene glycol residue having 2 to 12 carbon atoms from the viewpoint of more easily exhibiting the effects of the present invention.
- ethylene glycol, 1,2-propylene glycol, 1 3-propanediol, 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl 1,3-propanediol (neopentyl glycol), 2,2-diethyl-1,3-propanediol (3,3-dimethylolpentane), 2-n-butyl-2-ethyl-1,3-propane Diol (3,3-dimethylolheptane), 3-methyl-1,5-pentanediol, 1,6-hexanediol, 2, , 4-trimethyl 1,3-pent
- those having 3 or less carbon atoms that do not include a branch between OH groups are preferable, among which ethylene glycol, It is preferably a residue of 1,2-propylene glycol, 1,3-propanediol, 1,2-butanediol, 2-methyl-1,3-propanediol, and includes ethylene glycol and 1,2-propylene glycol. More preferably, it is a residue.
- the oxyalkylene glycol residue is preferably an oxyalkylene glycol residue having 4 to 12 carbon atoms from the viewpoint of more easily expressing the effects of the present invention.
- diethylene glycol, triethylene glycol, tetraethylene glycol And residues such as dipropylene glycol and tripropylene glycol may be used alone or in combination of two or more.
- the aryl glycol residue is preferably an aryl glycol residue having 6 to 18 carbon atoms from the viewpoint of more easily exhibiting the effects of the present invention.
- hydroquinone, resorcin, bisphenol A, alkylene oxide of bisphenol A examples include residues such as adducts, bisphenol F, alkylene oxide adducts of bisphenol F, biphenols, alkylene oxide adducts of biphenols, etc., which may be used alone or in combination of two or more.
- a in the general formula (1) is a dicarboxylic acid residue, specifically, an alkylenedicarboxylic acid residue (A1) or an aryldicarboxylic acid residue (A2). It is essential that the number of moles of isophthalic acid residues in is 20 mol% or more.
- the dicarboxylic acid residue refers to a group excluding —OH in the carboxy group.
- the ester resin represented by the general formula (1) by using a large amount of isophthalic acid as a raw dicarboxylic acid, when mixed with the optical resin described later, the optical resin, particularly the cellulose ester resin, is used. When it is processed into a film without plasticizing it, the elastic modulus is improved and moisture permeability is imparted, and the optical properties inherent to the optical resin are not impaired, and the thinning proceeds. It can use suitably for an optical film use.
- the number of moles of isophthalic acid residues in the dicarboxylic acid residue is 20 mol% or more.
- the rate is preferably in the range of 25 to 100 mol%.
- the alkylene dicarboxylic acid residue (A1) which may be present together with the isophthalic acid residue, is an alkylene dicarboxylic acid residue having 2 to 12 carbon atoms, so that the effects of the present invention are further exhibited.
- residues such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, 1,2-dicarboxycyclohexane, 1,2-dicarboxycyclohexene
- residues such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, 1,2-dicarboxycyclohexane, 1,2-dicarboxycyclohexene
- succinic acid, adipic acid, and 1,2-dicarboxycyclohexane is preferable, and an adipic acid residue is most preferable because an optical film having more excellent moisture resistance can be obtained.
- aryl dicarboxylic acid residue (A2) that may be present together with the isophthalic acid residue
- examples of the aryl dicarboxylic acid residue (A2) that may be present together with the isophthalic acid residue include, for example, phthalic acid, terephthalic acid, 1,4-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 2 , 6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid and the like, and may be used alone or in combination of two or more.
- a residue of phthalic acid and terephthalic acid is preferable, and a residue of phthalic acid is most preferable because an optical film having higher strength can be obtained.
- the ester resin represented by the general formula (1) wherein B, G, and A are the same, and n, that is, a mixture of compounds that differ only in the number of repetitions, or It may be a mixture of compounds in which B, G, A and n in the general formula (1) are different.
- n a mixture of compounds that differ only in the number of repetitions, or It may be a mixture of compounds in which B, G, A and n in the general formula (1) are different.
- n that is, a mixture of compounds that differ only in the number of repetitions, or It may be a mixture of compounds in which B, G, A and n in the general formula (1) are different.
- n 0 component, so-called diester compound, to a specific content, it is suitably placed in the gap between the resin for optical materials, particularly the cellulose ester resin, and as a result, the effect of suppressing moisture permeability is manifested.
- the content of components having n of 3 or more compatibility with the optical material resin can be ensured, and transparency that can be used as an optical film can be more effectively maintained.
- the GPC measurement in the present invention was performed under the following conditions.
- [GPC measurement conditions] Measuring device: Tosoh Corporation high-speed GPC device "HLC-8320GPC” Column: “TSK GARDCOLUMN SuperHZ-L” manufactured by Tosoh Corporation + “TSK gel SuperHZM-M” manufactured by Tosoh Corporation + “TSK gel SuperHZM-M” manufactured by Tosoh Corporation + “TSK gel SuperHZ-2000” manufactured by Tosoh Corporation "TSK gel SuperHZ-2000” manufactured by Tosoh Corporation Detector: RI (differential refractometer) Data processing: “EcoSEC Data Analysis version 1.07” manufactured by Tosoh Corporation Column temperature: 40 ° C Developing solvent: Tetrahydrofuran Flow rate: 0.35 mL / min Sample to be measured: A sample obtained by dissolving 7.5 mg of a sample in 10 ml of tetrahydrofuran and filtering the obtained solution through a microfilter
- B is a residue of benzoic acid and acetic acid
- G is ethylene glycol, 1,2-propylene glycol, 1,3-propanediol, , 2-butanediol, 2-methyl-1,3-propanediol residue, which may have both
- A1 is succinic acid, adipic acid, 1,2-dicarboxycyclohexane residue
- A2 is phthalic acid
- B is a benzoic acid residue
- G is a residue of ethylene glycol or 1,2-propylene glycol
- A1 which may be present together
- the adipic acid residue, A2 is a phthalic acid residue.
- the weight average molecular weight of the ester resin of the present invention is preferably in the range of 350 to 1200, particularly preferably in the range of 350 to 800, from the viewpoint of achieving compatibility and film properties. Further, the average value of the repeating number n in the general formula (1) is preferably in the range of 0.2 to 3 from the viewpoint of achieving both compatibility and film physical properties.
- the weight average molecular weight and the average value of n are also values measured by the GPC measurement.
- the acid value of the ester resin of the present invention is preferably 5 or less, more preferably 1 or less, from the viewpoint of better compatibility with the resin for optical materials.
- the hydroxyl value of the ester resin is preferably 50 or less, and more preferably 20 or less.
- the ester resin of the present invention is produced, for example, by subjecting the above raw materials to an esterification reaction in the presence of an esterification catalyst as necessary, for example, within a temperature range of 180 to 250 ° C. for 10 to 25 hours. be able to.
- an esterification catalyst as necessary, for example, within a temperature range of 180 to 250 ° C. for 10 to 25 hours. be able to.
- conditions, such as temperature of esterification reaction and time are not specifically limited, You may set suitably.
- the monocarboxylic acid and dicarboxylic acid the acid itself may be used as a raw material, or an esterified product, an acid chloride, an anhydride of dicarboxylic acid, or the like may be used as a raw material.
- esterification catalyst examples include titanium catalysts such as tetraisopropyl titanate and tetrabutyl titanate; tin catalysts such as dibutyltin oxide; and organic sulfonic acid catalysts such as p-toluenesulfonic acid.
- the amount of the esterification catalyst used may be set as appropriate, but usually it is preferably used in the range of 0.001 to 0.1 parts by mass with respect to 100 parts by mass of the total amount of raw materials.
- the properties of the ester resin of the present invention vary depending on factors such as the weight average molecular weight and the combination of raw materials, but are usually liquid, solid, paste, etc. at room temperature.
- an ester resin there is a method of reacting a monocarboxylic acid with a compound having a hydroxyl group at the terminal obtained by using the above-mentioned alkylene glycol, oxyalkylene glycol or aryl glycol and dicarboxylic acid.
- the alkylene glycol, oxyalkylene glycol or aryl glycol, dicarboxylic acid and monocarboxylic acid may be charged into the reaction system in a lump and reacted with each other, or alkylene glycol, oxyalkylene glycol or aryl glycol and dicarboxylic acid may be reacted.
- a sequential reaction in which a monocarboxylic acid is further charged into the reaction system may be used.
- the ester resin obtained above may be used as it is as the ester resin of the present invention as long as the content of the isophthalic acid residue specified in the present invention is 20 mol% or more, or by the GPC measurement described above.
- the raw material used for the ester resin and the raw material of the diester compound prepared separately may be the same or different. At this time, it is necessary to adjust so that 20 mol% or more of the total mole number of A in the mixed ester resin becomes an isophthalic acid residue.
- B2-G2-B2 (2) (In the formula, B2 is an aryl monocarboxylic acid residue or an aliphatic monocarboxylic acid residue, G2 is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue, and a plurality of B2 are the same or different. May be.)
- B2 in the general formula (2) is an aryl monocarboxylic acid residue or an aliphatic monocarboxylic acid residue.
- the “carboxylic acid residue” refers to a group other than —OH in the carboxy group.
- the aryl monocarboxylic acid residue is an aryl monocarboxylic acid residue having 6 to 12 carbon atoms, which is easy to obtain raw materials, easy to esterify, and mixed with a cellulose ester resin described later.
- benzoic acid dimethylbenzoic acid, trimethylbenzoic acid, tetramethylbenzoic acid, ethylbenzoic acid, propylbenzoic acid, butylbenzoic acid, cumin
- examples thereof include acid, para-tert-butylbenzoic acid, orthotoluic acid, metatoluic acid, p-toluic acid, ethoxybenzoic acid, propoxybenzoic acid, anisic acid, naphthoic acid and the like, and they may be used alone or in combination of two or more.
- a residue of benzoic acid, p-toluic acid, or dimethylbenzoic acid is preferable, and a residue of benzoic acid is more preferable.
- the number of carbon atoms does not include the carbon atom in the carboxy group. Further, it may be a residue such as nicotinic acid or furoic acid having an aromaticity, which may have a substituent.
- the aliphatic monocarboxylic acid residue is an aliphatic monocarboxylic acid residue having 1 to 8 carbon atoms, which is mixed with raw material availability, ease of esterification reaction, and cellulose ester resin described later.
- residues such as acetic acid, propionic acid, butanoic acid, hexanoic acid, octanoic acid, octylic acid, and the like. It may have both of the above, and is particularly preferably a residue of acetic acid.
- the number of carbon atoms does not include the carbon atom in the carboxy group.
- G in the general formula (1) is an alkylene glycol residue, an oxyalkylene glycol residue or an aryl glycol residue.
- the glycol residue refers to a group after removing a hydrogen atom from a hydroxyl group.
- the alkylene glycol residue is preferably an alkylene glycol residue having 2 to 12 carbon atoms from the viewpoint of more easily exhibiting the effects of the present invention.
- ethylene glycol, 1,2-propylene glycol, 1 3-propanediol, 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 2,2-dimethyl 1,3-propanediol (neopentyl glycol), 2,2-diethyl-1,3-propanediol (3,3-dimethylolpentane), 2-n-butyl-2-ethyl-1,3-propane Diol (3,3-dimethylolheptane), 3-methyl-1,5-pentanediol, 1,6-hexanediol, 2, , 4-trimethyl 1,3-pent
- 1,2-propylene glycol 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 2-methyl-1,3-propane It is preferably a residue of diol or 1,5-pentanediol.
- the oxyalkylene glycol residue is preferably an oxyalkylene glycol residue having 4 to 12 carbon atoms from the viewpoint of more easily expressing the effects of the present invention.
- diethylene glycol, triethylene glycol, tetraethylene glycol And residues such as dipropylene glycol and tripropylene glycol may be used alone or in combination of two or more.
- the aryl glycol residue is preferably an aryl glycol residue having 6 to 18 carbon atoms from the viewpoint of more easily exhibiting the effects of the present invention.
- hydroquinone, resorcin, bisphenol A, alkylene oxide of bisphenol A examples include residues such as adducts, bisphenol F, alkylene oxide adducts of bisphenol F, biphenols, alkylene oxide adducts of biphenols, etc., which may be used alone or in combination of two or more.
- B2 is a residue of benzoic acid or acetic acid
- G is 1,2-propylene glycol, 1,3-propanediol
- 1,2- The residue is preferably a residue of butanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, 1,5-pentanediol, diethylene glycol or dipropylene glycol.
- the diester compound (II) may be synthesized or commercially available.
- a plurality of compounds made of different raw materials may be used as the compound (II).
- the ester resin of the present invention obtained by such a method should be excellent in the balance of moisture permeability, elastic modulus and optical properties of the resulting film by blending it with the resin for optical materials. It can be used as a so-called antiplasticizer, and can be particularly suitably used as an optical film.
- the resin for optical material is not particularly limited as long as it is highly transparent and can be processed into a film shape.
- the range is from 1 to 50 parts by mass, preferably from 1 to 30 parts by mass, and more preferably from 5 to 20 parts by mass.
- cellulose ester resin examples include those obtained by esterifying part or all of the hydroxyl groups of cellulose obtained from cotton linter, wood pulp, kenaf, etc. Among them, cellulose obtained from cotton linter A film obtained by using a cellulose ester resin obtained by esterifying is preferable because it can be easily peeled off from a metal support constituting a film production apparatus described later, and the production efficiency of the film can be further improved.
- cellulose ester resin examples include cellulose acetate, cellulose acetate propionate, cellulose acetate butyrate, cellulose acetate phthalate, and cellulose nitrate.
- cellulose acetate is used. Is preferable because a film having excellent mechanical properties and transparency can be obtained.
- These cellulose ester resins may be used alone or in combination of two or more.
- the cellulose acetate preferably has a polymerization degree in the range of 250 to 400, and an acetylation degree in the range of 54.0 to 62.5% by mass, preferably 58.0 to 62.5. More preferably, it is in the range of mass%. If the cellulose acetate has a polymerization degree and an acetylation degree within a range, a film having excellent mechanical properties can be obtained. In the present invention, it is more preferable to use so-called cellulose triacetate.
- the acetylation degree said by this invention is the mass ratio of the acetic acid produced
- the number average molecular weight of the cellulose acetate is preferably in the range of 70,000 to 300,000, and more preferably in the range of 80,000 to 200,000. When the number average molecular weight of the cellulose acetate is within this range, a film having excellent mechanical properties can be easily obtained.
- the optical film in the present invention uses the cellulose ester resin composition containing the ester resin of the present invention and the cellulose ester resin, and uses a resin composition containing other various additives as necessary. Also good.
- an unstretched optical film can be extruded using an extruder equipped with a T die, a circular die, or the like.
- a resin composition obtained by melting and kneading the ester resin, cellulose ester resin, and other additives in advance can be used. However, it can be extruded as it is.
- additives examples include other modifiers other than the ester resin of the present invention, thermoplastic resins, ultraviolet absorbers, matting agents, deterioration inhibitors (for example, antioxidants, peroxide decomposers, radical prohibitions). Agents, metal deactivators, acid scavengers, etc.) and dyes.
- tricresyl phosphate tricresyl phosphate
- cresyl diphenyl phosphate dimethyl phthalate
- thermoplastic resin is not particularly limited, and examples thereof include polyester resins other than the ester resin of the present invention, polyester ether resins, polyurethane resins, epoxy resins, and toluenesulfonamide resins.
- the ultraviolet absorber is not particularly limited, and examples thereof include oxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, benzophenone compounds, cyanoacrylate compounds, nickel complex compounds, and the like.
- the ultraviolet absorber is preferably used in the range of 0.01 to 2 parts by mass with respect to 100 parts by mass of the cellulose ester resin.
- Examples of the matting agent include silicon oxide, titanium oxide, aluminum oxide, calcium carbonate, calcium silicate, aluminum silicate, magnesium silicate, calcium phosphate, kaolin, and talc.
- the matting agent is preferably used in the range of 0.1 to 0.3 parts by mass with respect to 100 parts by mass of the cellulose ester resin.
- the type and amount of the dye are not particularly limited as long as they do not impair the object of the present invention.
- the optical film is obtained by casting a resin solution obtained by dissolving the cellulose ester resin composition in an organic solvent on a metal support, and then the organic solvent. It can also be obtained by forming by a so-called solution casting method (solvent casting method) by distilling off and drying.
- solution casting method solvent casting method
- the resulting film can exhibit substantially optical isotropy.
- the film showing optical isotropy can be used for an optical material such as a liquid crystal display, and is particularly useful as a protective film for a polarizing plate.
- the film obtained by the said method cannot form an unevenness
- the solution casting method generally includes a first step in which the cellulose ester resin composition is dissolved in an organic solvent, and the resulting resin solution is cast on a metal support, and in the cast resin solution.
- Examples of the metal support used in the first step include endless belt-shaped or drum-shaped metal supports, for example, stainless steel with a mirror-finished surface can be used. .
- the drying method in the second step is not particularly limited.
- it is included in the cast resin solution by applying air in a temperature range of 30 to 50 ° C. to the upper surface and / or the lower surface of the metal support.
- Examples thereof include a method of evaporating 50 to 80% by mass of an organic solvent to form a film on the metal support.
- the third step is a step in which the film formed in the second step is peeled off from the metal support and is heated and dried under a temperature condition higher than that in the second step.
- a heat drying method for example, a method in which the temperature is raised stepwise under a temperature condition of 100 to 160 ° C. is preferable because good dimensional stability can be obtained.
- the organic solvent remaining in the film after the second step can be almost completely removed by heating and drying under the temperature condition.
- the organic solvent can be recovered and reused.
- the organic solvent that can be used when the resin composition is mixed and dissolved in an organic solvent is not particularly limited as long as it can dissolve them.
- organic halogen compounds such as methylene chloride and dioxolanes are preferably used.
- a poor solvent such as methanol, ethanol, 2-propanol, n-butanol, cyclohexane, cyclohexanone together with the good solvent in order to improve the production efficiency of the film.
- the concentration of the cellulose ester resin in the resin solution is preferably 10 to 50% by mass, more preferably 15 to 35% by mass.
- the unstretched optical film obtained by the above-described method is stretched by uniaxially stretching in the mechanical flow direction and transversely uniaxially stretching in the direction orthogonal to the mechanical flow direction, as necessary.
- the obtained optical film can be obtained.
- the stretched film biaxially stretched can be obtained by stretching by a sequential biaxial stretching method of roll stretching and tenter stretching, a simultaneous biaxial stretching method by tenter stretching, a biaxial stretching method by tubular stretching, or the like.
- the draw ratio is preferably 0.1% or more and 1000% or less in at least one direction, more preferably 0.2% or more and 600% or less, and more preferably 0.3% or more and 300% or less. Especially preferred. By designing in this range, a stretched optical film preferable in terms of birefringence, heat resistance and strength can be obtained.
- the optical film of the present invention is excellent in moisture permeation resistance, transparency and elastic modulus, so that it can be used for an optical film of a liquid crystal display device, for example.
- the optical film of the liquid crystal display device include a protective film for a polarizing plate, a retardation film, a reflective film, a viewing angle improving film, an antiglare film, an antireflective film, an antistatic film, and a color filter.
- a protective film for polarizing plates preferably as a protective film for polarizing plates.
- the film thickness of the optical film is preferably in the range of 20 to 120 ⁇ m, more preferably in the range of 25 to 100 ⁇ m, and particularly preferably in the range of 25 to 80 ⁇ m.
- a film thickness in the range of 25 to 80 ⁇ m is suitable for reducing the thickness of the liquid crystal display device, and has sufficient film strength and Rth stability. Excellent performance such as moisture permeability resistance can be maintained.
- the optical film of the present invention is characterized in that the elastic modulus is higher than when no ester resin is blended.
- a polyester resin blended for the purpose of enhancing the processability of cellulose ester resin is sometimes referred to as “plasticizer”, but the ester resin of the present invention is more optical than plasticizing effect. From the viewpoint of improving the strength of the resin for materials, it has a performance different from the conventional one in that it is used as an antiplasticizer.
- the polarizing plate protective film can be adjusted to a desired Rth without causing bleed under high temperature and high humidity, so that it can be used widely in various liquid crystal display systems depending on the application. Can do.
- liquid crystal display method examples include IPS (In-Plane Switching), TN (Twisted Nematic), VA (Vertically Aligned), and OCB (Optical Compensatory Bend).
- IPS In-Plane Switching
- TN Transmission Nematic
- VA Very Aligned
- OCB Optical Compensatory Bend
- An example is Optically Compensatory Bend).
- the optical film according to the present invention includes, as an optical material, a polarizing plate protective film used for a display such as a liquid crystal display device, a plasma display, an organic EL display, a field emission display, a rear projection television, a quarter wavelength plate, and a half. It can be suitably used for a retardation film such as a wave plate, a viewing angle control film, a liquid crystal optical compensation film, a display front plate and the like.
- the resin composition of the present invention is also used in the fields of optical communication systems, optical switching systems, and optical measurement systems, such as waveguides, lenses, optical fibers, optical fiber substrates, coating materials, LED lenses, and lens covers. It can also be used.
- Example 1 In a 2-liter three-necked flask, 412 g of 1,2-propylene glycol (hereinafter abbreviated as “PG”) as a glycol component, 374 g of isophthalic acid (hereinafter abbreviated as “IPA”) as a dicarboxylic acid component, and benzoic acid as a monocarboxylic acid component 611 g (hereinafter abbreviated as “BzA”) and 0.08 g of tetraisopropyl titanate (hereinafter abbreviated as “TIPT”) as a catalyst were charged, and the temperature was gradually raised to 230 ° C. in a nitrogen stream from a nitrogen introduction tube. A condensation reaction was performed at 230 ° C.
- PG 1,2-propylene glycol
- IPA isophthalic acid
- BzA benzoic acid
- TIPT tetraisopropyl titanate
- ester resin (1) of the present invention was a pale yellow liquid at room temperature, had an acid value of 0.12, a hydroxyl value of 10.0, and a weight average molecular weight of 590.
- Example 2 The ester resin was synthesized in the same manner as in Example 1 using PG 412 g as the glycol component, 280 g of IPA as the dicarboxylic acid component, 82 g of adipic acid (hereinafter abbreviated as “AA”), BzA611 g and 0.08 g of TIPT as the monocarboxylic acid component. 2) was obtained.
- the obtained ester resin (2) was a light yellow liquid at room temperature, had an acid value of 0.07, a hydroxyl value of 0.0, and a weight average molecular weight of 780.
- Example 3 The ester resin (3) was obtained by synthesizing in the same manner as in Example 1 using PG 412 g as the glycol component, IPA 187 g and AA 164 g as the dicarboxylic acid component, and BzA 611 g and TIPT 0.08 g as the monocarboxylic acid component.
- the obtained ester resin (3) was a light yellow liquid at room temperature, an acid value of 0.05, a hydroxyl value of 1.1, and a weight average molecular weight of 670.
- Example 4 The ester resin (4) was obtained by synthesizing in the same manner as in Example 1 using PG 412 g as the glycol component, IPA 94 g and AA 245 g as the dicarboxylic acid component, and BzA 611 g and TIPT 0.08 g as the monocarboxylic acid component.
- the obtained ester resin (4) was a light yellow liquid at room temperature, an acid value of 0.08, a hydroxyl value of 5.4, and a weight average molecular weight of 620.
- Example 5 Synthesis is carried out in the same manner as in Example 1 using 412 g of 1,3-propanediol (hereinafter abbreviated as “13PD”) as the glycol component, IPA 280 g and AA 82 g as the dicarboxylic acid component, and BzA611 g and TIPT 0.08 g as the monocarboxylic acid component.
- 13PD 1,3-propanediol
- IPA 280 g and AA 82 g the dicarboxylic acid component
- BzA611 g and TIPT 0.08 g the monocarboxylic acid component.
- the obtained ester resin (5) was a pale yellow liquid at room temperature, an acid value of 0.11, a hydroxyl value of 8.9, and a weight average molecular weight of 640.
- 2MPD 2-methyl-1,3-propanediol
- Comparative Example 1 A 2 liter three-necked flask was charged with PG 437 g as a glycol component, 180 g phthalic acid (hereinafter abbreviated as “PA”) as a dicarboxylic acid component, AA 178 g, BzA 659 g and TIPT 0.09 g as a monocarboxylic acid component, and a nitrogen stream from a nitrogen introduction tube The temperature was gradually raised to 220 ° C. A condensation reaction was carried out at 220 ° C. for 13 hours, and it was confirmed that the acid value was 1.0 or less. Excess glycol was removed at 195 ° C. under reduced pressure to obtain an ester resin (1 ′) for comparison. The obtained ester resin (1 ′) was a pale yellow liquid at room temperature, had an acid value of 0.09, a hydroxyl value of 1.2, and a weight average molecular weight of 640.
- PA phthalic acid
- Comparative Example 2 A polyester resin (2 ′) for comparison was obtained by synthesizing in the same manner as in Comparative Example 1 using PG313 g, AA262 g, BzA436 g and TIPT 0.10 g as the glycol component.
- the obtained polyester resin for comparison (2 ′) was a pale yellow liquid at room temperature, had an acid value of 0.50, a hydroxyl value of 12.6, and a weight average molecular weight of 610.
- Comparative Example 3 A polyester resin for comparison (3 ′) was obtained by synthesizing in the same manner as in Comparative Example 1 using PG 460 g, dimethyl terephthalate 466 g, BzA 586 g, and TIPT 0.09 g as the glycol component.
- the obtained polyester resin for comparison (3 ′) was a light yellow viscous liquid at room temperature, had an acid value of 0.24, a hydroxyl value of 5.4, and a weight average molecular weight of 650.
- the Rth value at a wavelength of 590 nm was measured using a birefringence measuring device (KOBRA-WR, manufactured by Oji Scientific Instruments) in an environment where the optical film was 23 ° C. and the relative humidity was 55%.
- Measurement was performed according to the method described in JIS Z 0208.
- the measurement conditions were a temperature of 40 ° C. and a relative humidity of 90%. It represents that it is excellent in moisture permeability resistance, so that the value obtained is small.
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Abstract
Description
B-(G-A)n-G-B (1)
〔式(1)中、Bはモノカルボン酸残基であり、Gはアルキレングリコール残基、オキシアルキレングリコール残基又はアリールグリコール残基であり、Aはジカルボン残基であって、Aの合計モル数の20モル%以上がイソフタル酸残基であり、nは繰り返し数であり、繰り返しごとにG、Aは同一でも異なっていてもよく、また複数あるB、Gは同一でも異なっていてもよい。〕
で表されることを特徴とするエステル樹脂とこれを含む樹脂組成物、並びに該組成物を用いて得られる光学用フィルム、及び当該光学用フィルムを用いた液晶表示装置を提供するものである。
B-(G-A)n-G-B (1)
〔式(1)中、Bはモノカルボン酸残基であり、Gはアルキレングリコール残基、オキシアルキレングリコール残基又はアリールグリコール残基であり、Aはジカルボン残基であって、Aの合計モル数の20モル%以上がイソフタル酸残基であり、nは繰り返し数であり、繰り返しごとにG、Aは同一でも異なっていてもよく、また複数あるB、Gは同一でも異なっていてもよい。〕
で表されることを特徴とする。
[GPC測定条件]
測定装置:東ソー株式会社製高速GPC装置「HLC-8320GPC」
カラム:東ソー株式会社製「TSK GURDCOLUMN SuperHZ-L」+東ソー株式会社製「TSK gel SuperHZM-M」+東ソー株式会社製「TSK gel SuperHZM-M」+東ソー株式会社製「TSK gel SuperHZ-2000」+東ソー株式会社製「TSK gel SuperHZ-2000」
検出器:RI(示差屈折計)
データ処理:東ソー株式会社製「EcoSEC Data Analysis バージョン1.07」
カラム温度:40℃
展開溶媒:テトラヒドロフラン
流速:0.35mL/分
測定試料:試料7.5mgを10mlのテトラヒドロフランに溶解し、得られた溶液をマイクロフィルターでろ過したものを測定試料とした。
試料注入量:20μl
標準試料:前記「HLC-8320GPC」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
東ソー株式会社製「A-300」
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
東ソー株式会社製「F-288」
本発明のエステル樹脂におけるn=0成分とnが3以上の成分の面積%は、次のようにして算出することができる。エステル樹脂のGPC測定を行って、検出されたピークに対応する各成分のポリスチレン換算分子量を求め、検出されたピーク面積の比から検出されたピークに対応する各成分の含有割合(面積分率)を算出した。
B2-G2-B2 (2)
(式中、B2はアリールモノカルボン酸残基または脂肪族モノカルボン酸残基であり、G2はアルキレングリコール残基、オキシアルキレングリコール残基又はアリールグリコール残基であり、複数あるB2は同一でも異なっていてもよい。)
2リットル3つ口フラスコに、グリコール成分として1,2-プロピレングリコール(以下「PG」と略す)412g、ジカルボン酸成分としてイソフタル酸(以下「IPA」と略す)374g、モノカルボン酸成分として安息香酸(以下「BzA」と略す)611g及び触媒であるテトライソプロピルチタネート(以下「TIPT」と略す)0.08gを仕込み、窒素導入管より窒素気流下、段階的に230℃まで昇温した。230℃で8時間縮合反応させ、酸価が1.0以下になったことを確認した。減圧下、195℃にて過剰のグリコールを除去することで本発明のエステル樹脂(1)を得た。得られたエステル樹脂(1)は、常温で淡黄色液体であり、酸価が0.12、水酸基価10.0であり、重量平均分子量は590であった。GPC測定におけるn=0成分は、29面積%、(n≧3)/(n=0)は1.0であった。
グリコール成分としてPG412g、ジカルボン酸成分としてIPA280g、アジピン酸(以下「AA」と略す)82g、モノカルボン酸成分としてBzA611g及びTIPT0.08gを用いて実施例1と同様にして合成することでエステル樹脂(2)を得た。得られたエステル樹脂(2)は、常温で淡黄色液体であり、酸価が0.07、水酸基価0.0であり、重量平均分子量は780であった。GPC測定におけるn=0成分は、24面積%、(n≧3)/(n=0)は1.1であった。
グリコール成分としてPG412g、ジカルボン酸成分としてIPA187g、AA164g、モノカルボン酸成分としてBzA611g及びTIPT0.08gを用いて実施例1と同様にして合成することでエステル樹脂(3)を得た。得られたエステル樹脂(3)は、常温で淡黄色液体であり、酸価が0.05、水酸基価1.1であり、重量平均分子量は670であった。GPC測定におけるn=0成分は、25面積%、(n≧3)/(n=0)は1.1であった。
グリコール成分としてPG412g、ジカルボン酸成分としてIPA94g、AA245g、モノカルボン酸成分としてBzA611g及びTIPT0.08gを用いて実施例1と同様にして合成することでエステル樹脂(4)を得た。得られたエステル樹脂(4)は、常温で淡黄色液体であり、酸価が0.08、水酸基価5.4であり、重量平均分子量は620であった。GPC測定におけるn=0成分は、31面積%、(n≧3)/(n=0)は0.7であった。
グリコール成分として1,3‐プロパンジオール(以下「13PD」と略す)412g、ジカルボン酸成分としてIPA280g、AA82g、モノカルボン酸成分としてBzA611g及びTIPT0.08gを用いて実施例1と同様にして合成することでエステル樹脂(5)を得た。得られたエステル樹脂(5)は、常温で淡黄色液体であり、酸価が0.11、水酸基価8.9であり、重量平均分子量は640であった。GPC測定におけるn=0成分は、29面積%、(n≧3)/(n=0)は0.8であった。
グリコール成分として2‐メチル‐1,3‐プロパンジオール(以下「2MPD」と略す)488g、ジカルボン酸成分としてIPA280g、AA82g、モノカルボン酸成分としてBzA611g及びTIPT0.08gを用いて実施例1と同様にして合成することでエステル樹脂用(6)を得た。得られたエステル樹脂(6)は、常温で淡黄色液体であり、酸価が0.11、水酸基価12.6であり、重量平均分子量は560であった。GPC測定におけるn=0成分は、40面積%、(n≧3)/(n=0)は0.4であった。
2リットル3つ口フラスコに、グリコール成分としてPG437g、ジカルボン酸成分としてフタル酸(以下「PA」と略す)180g、AA178g、モノカルボン酸成分としてBzA659g及びTIPT0.09gを仕込み、窒素導入管より窒素気流下、段階的に220℃まで昇温した。220℃で13時間縮合反応させ、酸価が1.0以下になったことを確認した。減圧下、195℃にて過剰のグリコールを除去することで比較対照用のエステル樹脂(1’)を得た。得られたエステル樹脂(1’)は、常温で淡黄色液体であり、酸価が0.09、水酸基価1.2であり、重量平均分子量は640であった。
グリコール成分としてPG313g、AA262g、BzA436g及びTIPT0.10gを用いて比較例1と同様にして合成することで比較対象用ポリエステル樹脂(2’)を得た。得られた比較対象用ポリエステル樹脂(2’)は、常温で淡黄色液体であり、酸価は0.50、水酸基価12.6で、重量平均分子量は610であった。
グリコール成分としてPG460g、テレフタル酸ジメチル466g、BzA586g及びTIPT0.09gを用いて比較例1と同様にして合成することで比較対象用ポリエステル樹脂(3’)を得た。得られた比較対象用ポリエステル樹脂(3’)は、常温で淡黄色粘調液体であり、酸価は0.24、水酸基価5.4で、重量平均分子量は650であった。
<セルロースエステル光学フィルムの調整>
トリアセチルセルロース樹脂(株式会社ダイセル製「LT-35」)100部、エステル樹脂(1)~(6)、エステル樹脂(1’)~(3’)10部を、メチレンクロライド810部及びメタノール90部からなる混合溶剤に加えて溶解し、セルロースエステル樹脂組成物であるドープ液を調製した。比較例7はエステル樹脂を配合せず、トリアセチルセルロース樹脂のみを混合溶剤に溶解させて、ドープ液とした。これらのドープ液をガラス板上に厚さ0.8mmまたは0.5mmとなるように流延し、室温で16時間乾燥させた後、50℃で30分、さらに120℃で30分乾燥させることで、本発明の光学フィルム(60μmまたは40μm)を得た。得られたフィルムについて、下記に従い物性を測定し、その結果を表1に示した。
装置:(株)島津製作所製オートグラフAG-IS
試験片:150mm×10mm,厚み40μmの短冊形
チャック間:100mm
試験速度 :10mm/min
弾性率が大きい程、硬いフィルムであることを表す。
光学フィルムを23℃で相対湿度が55%の環境下、複屈折測定装置(KOBRA-WR,王子計測器(株)製)を用いて波長590nmにおけるRth値を測定した。
JIS Z 0208に記載の方法に従い、測定した。測定条件は、温度40℃、相対湿度90%で行なった。得られる値が小さい程、耐透湿性に優れることを表す。
Claims (11)
- 下記一般式(1)
B-(G-A)n-G-B (1)
〔式(1)中、Bはモノカルボン酸残基であり、Gはアルキレングリコール残基、オキシアルキレングリコール残基又はアリールグリコール残基であり、Aはジカルボン残基であって、Aの合計モル数の20モル%以上がイソフタル酸残基であり、nは繰り返し数であり、繰り返しごとにG、Aは同一でも異なっていてもよく、また複数あるB、Gは同一でも異なっていてもよい。〕
で表されることを特徴とするエステル樹脂。 - GPC測定における面積比率で前記一般式(1)中のn=0成分が10~50%であり、且つnが3以上の成分の面積%とn=0成分の面積%との比(n≧3)/(n=0)が3以下である請求項1記載のエステル樹脂。
- 前記一般式(1)中のBが、炭素原子数6~12のアリールモノカルボン酸残基又は炭素原子数1~8の脂肪族モノカルボン酸残基であり、Gが炭素原子数2~12のアルキレングリコール残基、炭素原子数4~12のオキシアルキレングリコール残基又は炭素数6~18のアリールグリコール残基であり、nの平均値が0.2~3である請求項1又は2記載のエステル樹脂。
- 前記エステル樹脂の重量平均分子量が350~1200の範囲である請求項1~3の何れか1項記載のエステル樹脂。
- 前記一般式(1)中のBが酢酸、安息香酸、パラトルイル酸及びジメチル安息香酸からなる群から選ばれる1種以上の残基であり、Gがエチレングリコール、1,2-プロピレングリコール、1,3-プロパンジオール、1,2-ブタンジオール及び2-メチルペンチルグリコールからなる群から選ばれる1種以上の残基であり、Aがコハク酸、アジピン酸、ジカルボキシシクロヘキサン、フタル酸、テレフタル酸及びイソフタル酸からなる群から選ばれる1種以上の残基であって、且つAの合計モル数の20モル%以上がイソフタル酸である請求項1~4の何れか1項記載のエステル樹脂。
- 前記一般式(1)中のAの合計モル数の25~100モル%がイソフタル酸である請求項1~5の何れか1項記載のエステル樹脂。
- 光学材料用樹脂の反可塑化剤である請求項1~6のいずれか1記載のエステル樹脂。
- 請求項1~6の何れか1項記載のエステル樹脂とセルロースエステル樹脂とを含有することを特徴とするセルロースエステル樹脂組成物。
- 請求項8記載のセルロースエステル樹脂組成物を含有することを特徴とする光学フィルム。
- 偏光板保護用である請求項9記載の光学フィルム。
- 請求項9又は10の光学フィルムを有することを特徴とする液晶表示装置。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020197032876A KR102483672B1 (ko) | 2017-06-14 | 2018-04-10 | 광학 재료용 수지의 반가소화제, 셀룰로오스에스테르 수지 조성물, 광학 필름 및 액정 표시 장치 |
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| WO2020045028A1 (ja) * | 2018-08-30 | 2020-03-05 | Dic株式会社 | エステル樹脂、反可塑化剤、セルロースエステル樹脂組成物、光学フィルム及び液晶表示装置 |
| WO2020049948A1 (ja) * | 2018-09-05 | 2020-03-12 | Dic株式会社 | エステル樹脂、反可塑化剤、セルロースエステル樹脂組成物、光学フィルム及び液晶表示装置 |
| JP2021080419A (ja) * | 2019-11-22 | 2021-05-27 | Dic株式会社 | 光学材料用樹脂組成物、光学フィルム及び画像表示装置 |
| CN113423777A (zh) * | 2019-02-08 | 2021-09-21 | Dic株式会社 | 光学材料用树脂组合物、光学薄膜和显示装置 |
| JP2023038896A (ja) * | 2021-09-07 | 2023-03-17 | Dic株式会社 | 延伸フィルム、光学フィルムおよび表示装置 |
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| JP7842379B2 (ja) | 2021-09-07 | 2026-04-08 | Dic株式会社 | 延伸フィルム、光学フィルムおよび表示装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110770204B (zh) | 2022-05-31 |
| CN110770204A (zh) | 2020-02-07 |
| TWI761527B (zh) | 2022-04-21 |
| KR20200018404A (ko) | 2020-02-19 |
| KR102483672B1 (ko) | 2023-01-03 |
| TW201905078A (zh) | 2019-02-01 |
| JP6614469B2 (ja) | 2019-12-04 |
| JPWO2018230123A1 (ja) | 2019-11-07 |
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