WO2009142193A1 - アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 - Google Patents
アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 Download PDFInfo
- Publication number
- WO2009142193A1 WO2009142193A1 PCT/JP2009/059173 JP2009059173W WO2009142193A1 WO 2009142193 A1 WO2009142193 A1 WO 2009142193A1 JP 2009059173 W JP2009059173 W JP 2009059173W WO 2009142193 A1 WO2009142193 A1 WO 2009142193A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- formula
- dye
- substituent
- compound
- Prior art date
Links
- FJKBWIAATVEZQX-LZFZKRRQSA-N C/N=N\c(cc1)ccc1/N=N/c(cc1)ccc1N Chemical compound C/N=N\c(cc1)ccc1/N=N/c(cc1)ccc1N FJKBWIAATVEZQX-LZFZKRRQSA-N 0.000 description 1
- 0 Cc(c(N=Nc(ccc(OC)c1)c1S(O)(=O)=O)c1)cc(**)c1OCCCCS(O)(=O)=O Chemical compound Cc(c(N=Nc(ccc(OC)c1)c1S(O)(=O)=O)c1)cc(**)c1OCCCCS(O)(=O)=O 0.000 description 1
- AQESGHBHCJZINL-KNTJUELISA-N Cc(cc(c(C)c1)/N=N\c(c(S(O)(=O)=O)cc2cc(Nc(cc3)ccc3OC)ccc22)c2O)c1/N=N\c(c(OCCCS(O)(=O)=O)c1)cc(C)c1/N=N\c1cc(C(O)=O)cc(C(O)=O)c1 Chemical compound Cc(cc(c(C)c1)/N=N\c(c(S(O)(=O)=O)cc2cc(Nc(cc3)ccc3OC)ccc22)c2O)c1/N=N\c(c(OCCCS(O)(=O)=O)c1)cc(C)c1/N=N\c1cc(C(O)=O)cc(C(O)=O)c1 AQESGHBHCJZINL-KNTJUELISA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/04—Disazo dyes from a coupling component "C" containing a directive amino group
- C09B31/043—Amino-benzenes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/16—Trisazo dyes
-
- 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
- G02F1/133528—Polarisers
Definitions
- the present invention relates to a novel azo compound and a salt thereof, a dye-based polarizing film containing the same, and a polarizing plate.
- a polarizing plate having a light transmission / shielding function is a basic component of a display device such as a liquid crystal display (LCD) together with a liquid crystal having a light switching function.
- LCD liquid crystal display
- This LCD can be used in a wide range of applications from small devices such as calculators and watches to notebook computers, word processors, liquid crystal projectors, liquid crystal TVs, car navigation systems, and indoor and outdoor measuring devices. Since it is used under a wide range of conditions from low humidity to high humidity and low light quantity to high light quantity, a polarizing plate having high polarization performance and excellent durability has been demanded.
- polarizing films are made of stretched and oriented polyvinyl alcohol or derivatives thereof, or polarizing film base materials such as polyene films obtained by orienting polyene by dehydrochlorination of polyvinyl chloride films or dehydration of polyvinyl alcohol films. Further, it is manufactured by dyeing or containing iodine or a dichroic dye as a polarizing element.
- an iodine-based polarizing film using iodine as a polarizing element is excellent in polarization performance, but is weak against water and heat, and is durable when used for a long time at high temperature and high humidity. There's a problem.
- a neutral color polarizing film formed by adsorbing and orienting several dichroic dyes on a polymer film the two polarizing films are stacked so that their orientation directions are orthogonal (orthogonal position). If there is light leakage (color leakage) of a specific wavelength in the visible light wavelength region, the hue of the liquid crystal display may change in the dark state when the polarizing film is attached to the liquid crystal panel. Therefore, when a polarizing film is mounted on a liquid crystal display device, several dichroic dyes are adsorbed and oriented on the polymer film to prevent discoloration of the liquid crystal display due to color leakage at a specific wavelength in the dark state.
- the transmittance in the orthogonal position (orthogonal transmittance) in the wavelength region of the visible light region must be uniformly reduced.
- a polarizing plate is used for the liquid crystal image forming portion.
- an iodine type polarizing plate having good polarization performance and neutral gray was used.
- the iodine-based polarizing plate has a problem that light resistance, heat resistance, and moist heat resistance are not sufficient because iodine is a polarizer as described above.
- a neutral gray polarizing plate using a dye-based dichroic dye as a polarizer has been used.
- a neutral gray polarizing plate is used for transmission in the entire visible wavelength range.
- Examples of the dye used in the production of the dye-based polarizing film as described above include water-soluble azo compounds described in Patent Document 1 to Patent Document 5, for example.
- the conventional polarizing plate containing the water-soluble dye has not sufficiently satisfied the market needs from the viewpoints of polarization characteristics, absorption wavelength region, hue, and the like.
- it corresponds to the three primary colors of color liquid crystal projectors, that is, three polarizing plates for blue channel, green channel and red channel, brightness and polarization performance, durability under high temperature and high humidity conditions, and long exposure There is no good light resistance to the light, and improvement thereof is desired.
- One of the objects of the present invention is to provide a high-performance polarizing plate having excellent polarization performance and moisture resistance, heat resistance, and light resistance. Furthermore, another object of the present invention is a neutral color polarizing plate in which two or more kinds of dichroic dyes are adsorbed and oriented on a polymer film, and the orthogonal color in the wavelength region of the visible light region is also obtained.
- the object of the present invention is to provide a high-performance polarizing plate having excellent polarization performance and moisture resistance, heat resistance and light resistance.
- a further object is to provide a high-performance polarizing plate corresponding to the three primary colors of a color liquid crystal projector and having good brightness, polarization performance, durability and light resistance.
- the present invention (1) Formula (1) or (2) (In the formula, A represents a phenyl group or naphthyl group having at least one substituent, R 1 to R 4 are at least one lower alkoxyl group having a sulfone group, and the others are independently a hydrogen atom, A lower alkyl group or a lower alkoxyl group, wherein X is an amino group which may have a substituent, a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, or a substituent; And a phenylazo group which may have a naphthotriazole group which may have a substituent.
- An azo compound represented by the formula: (2) X may have a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, a phenylazo group which may have a substituent, or a naphtho which may have a substituent
- the azo compound according to (1) which is a triazole group, and these substituents are a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a hydroxyl group, a carboxyl group, a sulfone group, an amino group, or a substituted amino group; Its salt.
- X is the formula (3) (In the formula, R 5 and R 6 each independently represent a hydrogen atom, a methyl group, a methoxy group, a sulfone group, an amino group, or a substituted amino group.)
- the azo compound according to (1) or (2) and a salt thereof, which is a phenylamino group represented by (4) X is the formula (4) (In the formula, R 7 represents a hydrogen atom, a hydroxyl group, an amino group or a substituted amino group.)
- the azo compound or a salt thereof according to (1) or (2), which is a benzoylamino group represented by (5) X is the formula (5) (In the formula, m represents 1 or 2.)
- the azo compound or salt thereof according to (1) or (2), which is a naphthotriazole group represented by (6) X is the formula (6) (Wherein R 8 to R 10 each independently represents a hydrogen atom, a hydroxyl group, a lower alkyl group,
- A is a phenyl group having two or more substituents, and at least one of the substituents is a sulfone group; the other substituents are a lower alkyl group, a lower alkoxyl group, a carboxyl group, a nitro group,
- the azo compound and the salt thereof according to any one of (3) to (7), which are a group, an amino group, or a substituted amino group.
- A is the formula (7) (In the formula, one of R 11 and R 12 is a sulfone group, and the other is a sulfone group, a lower alkyl group, a lower alkoxyl group, a carboxyl group, an amino group, or a substituted amino group.)
- A is the formula (8) (Wherein R 13 represents a lower alkoxyl group having a hydrogen atom, hydroxyl group or sulfone group, and n represents 1 to 3)
- the azo compound and the salt thereof according to any one of (3) to (8) which are represented by: (11) Any one of (1) to (10), wherein at least one of R 1 to R 4 is a sulfopropoxy group or a sulfobutoxy group, and the others are each independently a hydrogen atom, a methyl group, or a methoxy group And an azo compound thereof.
- a dye-based polarizing film comprising a polarizing film substrate containing the azo compound and / or salt thereof according to any one of (1) to (11).
- a dye-based polarizing film comprising a polarizing film substrate containing one or more kinds of the azo compound and / or salt thereof according to any one of (1) to (11) and other organic dyes.
- a dye system comprising a polarizing film substrate containing two or more azo compounds and / or salts thereof according to any one of (1) to (11) and one or more organic dyes other than these. Polarizing film.
- the polarizing film containing the azo compound or a salt thereof of the present invention has high polarization performance comparable to that of a polarizing film using iodine, and is excellent in durability, and therefore for various liquid crystal displays and liquid crystal projectors, It is suitable for in-vehicle applications that require high polarization performance and durability, and display applications for industrial instruments used in various environments.
- the azo compound of the present invention is represented by the above formula (1) or (2).
- A represents a phenyl group or naphthyl group having a substituent
- R 1 to R 4 are at least one lower alkoxyl group having a sulfone group
- the others are each independently A hydrogen atom, a lower alkyl group, or a lower alkoxyl group
- X is an amino group that may have a substituent, a benzoylamino group that may have a substituent, or a phenylamino group that may have a substituent
- a phenylazo group which may have a substituent and a naphthotriazole group which may have a substituent are examples of substituent.
- A represents a phenyl group or a naphthyl group having a substituent, and preferably has at least one substituent selected from the group consisting of a sulfone group and a carboxyl group, and has two or more substituents.
- at least one of the substituents is a sulfone group or a carboxyl group
- other substituents include a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a carboxyl group, a nitro group, an amino group, a substituted amino group, a hydroxyl group. It is preferable that the lower alkoxyl group which has a group or a sulfone group is included.
- A is more preferably a phenyl group represented by the above formula (7) or a naphthyl group represented by the above formula (8).
- R 11 and R 12 in the formula (7) is one of a sulfonic group, the other is a sulfone group, a lower alkyl group, lower alkoxyl group, a carboxyl group, an amino group, shows one of the substituted amino group,
- R 11 And R 12 are both sulfone groups, or one is a sulfone group, the other is preferably a methoxy group, a carboxyl group, or an acetylamino group, and R 11 is more preferably a sulfone group.
- R 1 to R 4 is a lower alkoxyl group having a sulfone group, and other than that, each independently represents a hydrogen atom, a lower alkyl group, or a lower alkoxyl group.
- one of R 1 and R 2 is a lower alkoxyl group having a sulfone group, and the other is a hydrogen atom, a lower alkyl group, or a lower alkoxyl group.
- the lower alkoxyl group having a sulfone group is preferably a sulfopropoxy group or a sulfobutoxy group, and the other is preferably a hydrogen atom, a methyl group or a methoxy group.
- R 1 is particularly preferably a lower alkoxyl group having a sulfone group.
- X represents a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, a phenylazo group which may have a substituent, or a naphthotriazole group which may have a substituent.
- X is a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, or a phenylazo group which may have a substituent
- the substituent is a hydrogen atom
- a lower alkyl group, a lower alkoxyl group, a hydroxyl group, a carboxyl group, a sulfone group, an amino group, or a substituted amino group and in the case of a naphthotriazole group which may have a substituent, the substituent is preferably a sulfone group.
- the substituent is preferably a hydrogen atom, a methyl group, a methoxy group, an amino group, a substituted amino group, or a sulfone group, and the substitution position is not particularly limited. Is particularly preferably in the p-position.
- the substituent is preferably a hydrogen atom, an amino group, a substituted amino group or a hydroxyl group, particularly preferably a hydrogen atom or an amino group.
- the substituent is preferably a hydroxyl group, an amino group, a methyl group, a methoxy group, or a carboxyl group, and particularly preferably a hydroxyl group.
- m represents 1 or 2
- n represents any integer of 1 to 3.
- the term “lower alkyl group” and “lower alkoxyl group” as used herein refer to alkyl groups and alkoxyl groups having 1 to 5 carbon atoms.
- the azo compound represented by the formula (1) or a salt thereof can be easily produced by performing known diazotization and coupling in accordance with a conventional azo dye production method as described in Non-Patent Document 1.
- an aromatic amine represented by the following formula (A) is diazotized and firstly coupled with an aniline represented by the following formula (B) to form a monoazoamino compound represented by the following formula (C). obtain.
- R 1 and R 2 represent the same meaning as R 1 and R 2 in Formula (1), respectively).
- R 1 , R 2 and A represent the same meaning as R 1 , R 2 and A in Formula (1), respectively).
- the monoazoamino compound is diazotized and secondarily coupled with anilines of the following formula (D) to obtain a disazoamino compound represented by the following formula (E).
- R 3 and R 4 represent the same meaning as R 3 and R 4 in formula (1), respectively).
- R 1, R 2, R 3 , R 4 and A have the same meanings as R 1, R 2, R 3 , R 4 and A in each equation (1).
- the azo compound of the formula (1) is obtained by diazotizing the disazoamino compound and tertiary coupling with naphthols represented by the following formula (F).
- the azo compound of formula (2) is obtained by diazotizing the above formula (C) and tertiary coupling with naphthols represented by the following formula (F).
- the diazotization step is performed by a conventional method of mixing a nitrite such as sodium nitrite in a mineral acid aqueous solution or suspension of diazo component such as hydrochloric acid or sulfuric acid, or a neutral or weak alkaline solution of diazo component. Nitrite is added to the aqueous solution and mixed with mineral acid.
- the diazotization temperature is suitably -10 to 40 ° C.
- the coupling step with anilines is carried out by mixing an acidic aqueous solution such as hydrochloric acid or acetic acid with each of the above diazo solutions, and at a temperature of ⁇ 10 to 40 ° C. and acidic conditions of pH 2 to 7.
- the monoazo compound and the disazo compound obtained by the coupling can be taken out as they are or deposited by aciding out or salting out and filtered, or they can proceed to the next step as a solution or suspension. If the diazonium salt is insoluble and in suspension, it can be filtered and used as a press cake in the next coupling step.
- the tertiary coupling reaction between a diazotized compound of a disazoamino compound and a naphthol represented by the formula (F) is carried out under a neutral to alkaline condition at a temperature of ⁇ 10 to 40 ° C. and a pH of 7 to 10. After completion of the reaction, it is precipitated by salting out and filtered out. If purification is required, salting out may be repeated or precipitated from water using an organic solvent.
- the organic solvent used for purification include water-soluble organic solvents such as alcohols such as methanol and ethanol, and ketones such as acetone.
- the azo compound represented by the formula (1) or (2) can be used as a free acid or a salt of an azo compound.
- salts include organic salts such as alkali metal salts such as lithium salts, sodium salts, and potassium salts, ammonium salts, and amine salts. In general, a sodium salt is used.
- the aromatic amine represented by the formula (A), which is a starting material for synthesizing the water-soluble dye represented by the formula (1) or (2), is a phenyl group or naphthyl group having at least one substituent. However, it is preferable that at least one of the substituents is a substituent selected from a sulfone group or a carboxyl group.
- A is a phenyl group having at least one substituent, for example, 4-aminobenzenesulfonic acid, 3-aminobenzenesulfonic acid, 2-aminobenzenesulfonic acid, 4-aminobenzoic acid, 2-amino-5-methylbenzene Sulfonic acid, 2-amino-5-methoxybenzenesulfonic acid, 4-amino-2-methylbenzenesulfonic acid, 3-amino-4-methoxybenzenesulfonic acid, 3-amino-4-methoxybenzenesulfonic acid, 2-amino -4-nitrobenzenesulfonic acid, 2,5-diaminobenzenesulfonic acid, 3-acetylamino-5-aminobenzenesulfonic acid, 2-amino-4-sulfobenzoic acid, 2-amino-5-sulfobenzoic acid, 4- Examples include amino-3-sulfobenzoic acid, 5-
- Sulfonic acid 2-amino-5-methoxybenzenesulfonic acid, 4-amino-2-methylbenzenesulfonic acid, 2-amino-4-sulfobenzoic acid, 3-acetylamino-5-aminobenzenesulfonic acid, 4-amino -3-Sulfobenzoic acid is preferred.
- a naphthotriazole group (shown in the above (5)) as a substituent of the phenyl group, and in addition, a 6,8-disulfonaphthotriazole group, a 7,9-disulfonaphthotriazole group 7-sulfonaphthotriazole group, 5-sulfonaphthotriazole group, and the like.
- the azo group has a substituent at the p-position.
- A is a naphthyl group having a sulfone group, for example, 4-aminonaphthalenesulfonic acid, 6-aminonaphthalene-2-sulfonic acid, 5-aminonaphthalene-2-sulfonic acid, 8-aminonaphthalene-2-sulfonic acid, 7 -Aminonaphthalene-1,3-disulfonic acid, 6-aminonaphthalene-1,3-disulfonic acid, 7-aminonaphthalene-1,5-disulfonic acid, 6-aminonaphthalene-1,5-disulfonic acid, 7-amino Naphthalene-1,3,6-trisulfonic acid, 7-amino-3- (3-sulfopropoxy) naphthalene-1-sulfonic acid, 7-amino-3- (4-sulfobutoxy) naphthalene-1-sulfonic acid, 7-amino-4- (3
- the substituents in the anilines optionally having substituents (R 1 to R 4 ) which are primary and secondary coupling components are lower alkoxyl groups in which at least one has a sulfone group, and the others are independent of each other Represents any one of a hydrogen atom, a lower alkyl group, and a lower alkoxyl group.
- the lower alkoxyl group having a sulfone group is preferably a 3-sulfopropoxy group or 4-sulfobutoxy group, and the other substituents are preferably a hydrogen atom, a methyl group or a methoxy group. One or two of these substituents may be bonded.
- the bonding position is 2-position, 3-position, 2-position and 5-position, 3-position and 5-position, or 2-position and 6-position with respect to the amino group, but 3-position, 2-position and 5-position are preferred.
- anilines having a lower alkoxyl group having a sulfone group include 3- (2-amino-4-methylphenoxy) propane-1-sulfonic acid, 3- (3-amino-4-methylphenoxy) propane-1-sulfone And acid, 3- (2-aminophenoxy) propane-1-sulfonic acid, 3- (2-amino-4-methylphenoxy) butane-1-sulfonic acid, and the like.
- anilines examples include aniline, 2-methylaniline, 3-methylaniline, 2-ethylaniline, 3-ethylaniline, 2,5-dimethylaniline, 2,5-diethylaniline, 2-methoxyaniline, Examples include 3-methoxyaniline, 2-methoxy-5-methylaniline, 2,5-dimethoxyaniline, 3,5-dimethylaniline, 2,6-dimethylaniline, and 3,5-dimethoxyaniline.
- anilines may have an amino group protected. Examples of the protecting group include the ⁇ -methanesulfonic acid group.
- the anilines used for the primary coupling and the anilines used for the secondary coupling may be the same or different.
- X in the naphthols having X which is a tertiary coupling component is a benzoylamino group which may have a substituent, a phenylamino group which may have a substituent, or a phenylazo group which may have a substituent.
- a naphthotriazole group which may have a substituent and the substituent is a hydrogen atom, a lower alkyl group, a lower alkoxyl group, a hydroxyl group, a carboxyl group, a sulfone group or an amino group which may have a substituent, respectively. Is preferred.
- X is a phenylamino group which may have a substituent
- X is preferably a phenylamino group having a substituent (R 5 , R 6 ) represented by the formula (3).
- the substituents (R 5 and R 6 ) each independently represent a hydrogen atom, a methyl group, a methoxy group, a sulfone group, an amino group, or a substituted amino group, but may be a hydrogen atom, a methyl group, a methoxy group, or an amino group. More preferably, at least one substituent is more preferably in the p-position relative to the amino group.
- phenylamino group 4-methylphenylamino group, 4-methoxyphenylamino group, 4-aminophenylamino group, 4-amino-2-sulfophenylamino group, 4-amino-3-sulfophenylamino group, 4 -Sulfomethylaminophenylamino group, 4-carboxyethylaminophenylamino group and the like.
- X is a benzoylamino group which may have a substituent
- X is preferably a benzoylamino group having a substituent (R 7 ) represented by the formula (4).
- the substituent (R 7 ) represents a hydrogen atom, a hydroxyl group, an amino group, or a substituted amino group, and is preferably a hydrogen atom, an amino group, or an amino group that may have a substituent. More preferred is the -position.
- benzoylamino group which may have a substituent include a benzoylamino group, a 4-aminobenzoylamino group, a 4-hydroxybenzoylamino group, and a 4-carboxyethylaminobenzoylamino group.
- X is a naphthotriazole group which may have a substituent
- X is preferably a naphthotriazole group having a sulfone group represented by the formula (5).
- m represents 1 or 2, but is preferably 2, for example, 6,8-disulfonaphthotriazole group, 7,9-disulfonaphthotriazole group, 7-sulfonaphthotriazole group, 5-sulfonaphthotriazole Groups, and the like, and is preferably a 6,8-disulfonaphthotriazole group or a 5-sulfonaphthotriazole group.
- X is a phenylazo group which may have a substituent
- X is preferably a phenylazo group having a substituent (R 8 to R 10 ) represented by the formula (6).
- substituents (R 8 to R 10 ) independently represents a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxyl group, an amino group, or a substituted amino group, but is preferably monosubstituted. Is more preferably a hydroxyl group, an amino group, or a substituted amino group.
- the dye-based polarizing film or the dye-based polarizing plate of the present invention may be used alone or in combination with a plurality of azo compounds represented by the formula (1) or other organic dyes as necessary. You may use together 1 or more types.
- the organic dye to be combined is not particularly limited, but is preferably a dye having absorption characteristics in a wavelength region different from the absorption wavelength region of the azo compound or a salt thereof of the present invention and having high dichroism. For example, Sea. Ai. direct. Yellow 12, sea. Ai. direct. Yellow 28, Sea. Ai. direct. Yellow 44, Sea. Ai. direct. Orange 26, Sea. Ai. direct. Orange 39, sea. Ai. direct. Orange 71, Sea. Ai. direct. Orange 107, sea.
- Ai. direct. Red 2 sea. Ai. direct. Red 31, sea. Ai. direct. Red 79, Sea. Ai. direct. Red 81, Sea. Ai. direct. Red 247, Sea. Ai. direct. Green 80, Sea. Ai. direct.
- Typical examples include Green 59 and dyes described in Patent Documents 1 to 5, but dyes developed for polarizing plates as described in Patent Documents 1 to 5 may be used depending on the purpose. More preferred. These dyes are used as free acids or alkali metal salts (for example, Na salt, K salt, Li salt), ammonium salts, and salts of amines.
- the type of dye to be blended differs depending on whether the target polarizing film is a neutral color polarizing film, a color polarizing film for liquid crystal projectors, or other color polarizing films.
- the blending ratio is not particularly limited, but in general, based on the weight of the azo compound of the formula (1) or a salt thereof, a total of at least one of the above organic dyes is 0.1 to It is preferably used in the range of 10 parts by weight.
- the polarizing film used for the dye-based polarizing film of the present invention or the color polarizing plate for a liquid crystal projector is a polarizing film material containing the azo compound represented by the formula (1) or a salt thereof together with other organic dyes as necessary.
- polarizing films having various hues and neutral colors can be produced.
- the obtained polarizing film is provided with a protective film as a polarizing plate, and is provided with a protective layer or an AR (antireflection) layer and a support as necessary.
- polarizing film substrate used in the dye-based polarizing film of the present invention
- a film made of polyvinyl alcohol resin or a derivative thereof is preferably used, and specific examples thereof include polyvinyl alcohol or a derivative thereof, and any of these.
- olefins such as ethylene and propylene
- unsaturated carboxylic acids such as crotonic acid, acrylic acid, methacrylic acid and maleic acid.
- the film which consists of polyvinyl alcohol or its derivative (s) is used suitably from the point of the adsorptivity and orientation of a dye.
- the thickness of the substrate is usually about 30 to 100 ⁇ m, preferably about 50 to 80 ⁇ m.
- a method of dyeing the polymer film is usually employed.
- the staining is performed as follows. First, a dye bath is prepared by dissolving the azo compound of the present invention and / or a salt thereof and, if necessary, other dyes in water.
- the dye concentration in the dye bath is not particularly limited, but is usually selected from the range of about 0.001 to 10% by weight. If necessary, a dyeing assistant may be used. For example, it is preferable to use sodium sulfate at a concentration of about 0.1 to 10% by weight.
- Dyeing is performed by immersing the polymer film in the dyeing bath thus prepared for 1 to 10 minutes.
- the dyeing temperature is preferably about 40 to 80 ° C.
- the orientation of the azo compound of the formula (1) and / or a salt thereof is performed by stretching the polymer film dyed as described above.
- a stretching method any known method such as a wet method or a dry method may be used.
- the stretching of the polymer film may optionally be performed before dyeing.
- the water-soluble dye is oriented at the time of dyeing.
- the polymer film containing and orienting the water-soluble dye is subjected to post-treatment such as boric acid treatment by a known method as necessary. Such post-processing is performed for the purpose of improving the light transmittance and the degree of polarization of the polarizing film.
- the conditions for the boric acid treatment vary depending on the type of polymer film used and the type of dye used.
- the boric acid concentration of the boric acid aqueous solution is 0.1 to 15% by weight, preferably 1 to 10% by weight.
- the treatment is carried out by immersing in a temperature range of 30 to 80 ° C., preferably 40 to 75 ° C. for 0.5 to 10 minutes. Further, if necessary, the fixing treatment may be performed together with an aqueous solution containing a cationic polymer compound.
- the thus obtained dye-based polarizing film of the present invention can be made into a polarizing plate by laminating a transparent protective film excellent in optical transparency and mechanical strength on one side or both sides thereof.
- a transparent protective film excellent in optical transparency and mechanical strength on one side or both sides thereof.
- a material for forming the protective film for example, in addition to a cellulose acetate film and an acrylic film, a fluorine film such as a tetrafluoroethylene / hexafluoropropylene copolymer, a polyester resin, a polyolefin resin, or a polyamide film A resin film or the like is used.
- a triacetyl cellulose (TAC) film or a cycloolefin film is preferably used.
- the thickness of the protective film is usually 40 to 200 ⁇ m.
- a transparent protective layer may be further provided on the surface of the dye-based polarizing plate of the present invention.
- the protective layer include an acrylic or polysiloxane hard coat layer and a urethane protective layer.
- an AR layer on the protective layer.
- the AR layer can be formed by vapor deposition or sputtering treatment of a material such as silicon dioxide or titanium oxide, and can be formed by thinly applying a fluorine-based material.
- the dye-type polarizing plate of this invention can also be used as an elliptically polarizing plate which stuck the phase difference plate.
- the dye-based polarizing plate of the present invention configured in this way has a neutral color, has no color shift at an orthogonal position in the wavelength region of the visible light region, is excellent in polarization performance, and further can be discolored even at high temperature and high humidity.
- the polarization performance is not deteriorated, and the light leaks in the orthogonal position in the visible light region is small.
- the color polarizing plate for a liquid crystal projector in the present invention contains an azo compound represented by the formula (1) and / or a salt thereof as a dichroic molecule together with the other organic dyes as necessary. is there.
- the polarizing film used for the color polarizing plate for the liquid crystal projector of the present invention is also manufactured by the method described in the section of the manufacturing method of the dye-based polarizing film of the present invention, and further a protective film is attached as a polarizing plate. If necessary, a protective layer or an AR layer and a support are provided and used as a color polarizing plate for a liquid crystal projector.
- a necessary wavelength range of the polarizing plate (A. When an ultra-high pressure mercury lamp is used; 420 to 500 nm for a blue channel, 500 to 580 nm for a green channel, 600 to 680 nm for a red channel, B.3 Peak wavelength when using primary color LED lamps: blue channel 430 to 450 nm, green channel 520 to 535 nm, red channel 620 to 635 nm) average single plate light transmittance of 39% or more, average light transmittance at orthogonal position Is 0.4% or less, more preferably the single plate average light transmittance in the necessary wavelength region of the polarizing plate is 41% or more, and the average light transmittance in the orthogonal position is 0.3% or less, more preferably 0.2%.
- the single plate average light transmittance in the necessary wavelength region of the polarizing plate is 42% or more, and the average light transmittance in the orthogonal position is 0.1% or less.
- the color polarizing plate for a liquid crystal projector of the present invention has brightness and excellent polarization performance as described above.
- the color polarizing plate for a liquid crystal projector of the present invention is preferably a polarizing plate comprising a polarizing film and a protective film, provided with the AR layer, and is preferably a polarizing plate with an AR layer, and is further attached to a support such as a transparent glass plate.
- a support such as a transparent glass plate.
- An AR layer and a polarizing plate with a support are more preferred.
- the single plate average light transmittance is that natural light is incident on a single polarizing plate (hereinafter simply referred to as a polarizing plate) having no support such as an AR layer and a transparent glass plate. It is the average value of the light transmittance in the specific wavelength region.
- the average light transmittance in the orthogonal position is an average value of the light transmittance in a specific wavelength region when natural light is incident on two polarizing plates whose orientation directions are orthogonal.
- the color polarizing plate for a liquid crystal projector of the present invention is usually used as a polarizing plate with a support.
- the support preferably has a flat portion, and since it is used for optical purposes, a glass molded product is preferable.
- the glass molded product include a glass plate, a lens, and a prism (for example, a triangular prism and a cubic prism).
- a lens attached with a polarizing plate can be used as a condenser lens with a polarizing plate in a liquid crystal projector.
- a prism with a polarizing plate attached thereto can be used as a polarizing beam splitter with a polarizing plate or a dichroic prism with a polarizing plate in a liquid crystal projector.
- the glass material include inorganic glass such as soda glass, borosilicate glass, and sapphire glass, and organic glass such as acrylic and polycarbonate. Inorganic glass is preferable.
- the glass plate may have a desired thickness and size. In order to further improve the single plate light transmittance, it is preferable to provide an AR layer on one or both of the glass surface and the polarizing plate surface of the polarizing plate with glass.
- a transparent adhesive (adhesive) agent may be applied to the flat surface of the support, and then the dye-based polarizing plate of the present invention may be attached to the coated surface.
- a transparent adhesive (adhesive) agent may be applied to the polarizing plate, and then a support may be attached to the coated surface.
- the adhesive (adhesive) agent used here is preferably, for example, an acrylic ester-based one.
- the dye-based polarizing plate of the present invention is disposed on either or both of the incident side and the exit side of the liquid crystal cell.
- the polarizing plate may or may not be in contact with the liquid crystal cell, but is preferably not in contact from the viewpoint of durability.
- the dye-based polarizing plate of the present invention using the liquid crystal cell as a support can be used.
- the polarizing plate is not in contact with the liquid crystal cell, it is preferable to use the dye-based polarizing plate of the present invention using a support other than the liquid crystal cell.
- the dye-type polarizing plate of the present invention is disposed on both the incident side and the outgoing side of the liquid crystal cell. It is preferable to arrange the support surface on the light source side on the cell side.
- the incident side of the liquid crystal cell is the light source side, and the opposite side is referred to as the emission side.
- an ultraviolet cut filter is disposed between a light source and the polarizing plate with a support on the incident side.
- the liquid crystal cell to be used is preferably an active matrix type, for example, in which liquid crystal is sealed between a transparent substrate on which electrodes and TFTs are formed and a transparent substrate on which counter electrodes are formed.
- a light source such as an ultra-high pressure mercury lamp (UHP lamp), metal halide lamp, or white LED passes through an ultraviolet cut filter and is separated into three primary colors, and then supports for blue, green, and red channels.
- the color polarizing plate for a liquid crystal projector thus configured has excellent polarization performance, and further has the characteristics that it does not cause discoloration or decrease in polarization performance even at high temperature and high humidity.
- Example 1 Add 27.7 parts of 4- (4'-aminophenyl) -azobenzenesulfonic acid to 500 parts of water and dissolve with sodium hydroxide. Add 32 parts of 35% hydrochloric acid, then add 6.9 parts of sodium nitrite and stir for 1 hour. A solution containing 24.5 parts of the compound of the following formula (38) described in Example 1 of Patent Document 6 was added dropwise thereto to complete the coupling at pH 3 to 4, followed by crystallization with sodium chloride. ) Was obtained. To the obtained disazo compound, 32 parts of 35% hydrochloric acid and then 6.9 parts of sodium nitrite are added and stirred at 25-30 ° C. for 2 hours to diazotize.
- Example 2 Add 18.3 parts of 4-aminobenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 10 parts of 35% hydrochloric acid at 10 ° C or lower, then add 6.9 parts of sodium nitrite. The mixture was stirred at 5 to 10 ° C. for 1 hour. Thereto, a solution containing 24.5 parts of the compound of the above formula (38) is dropped, and the coupling is completed at pH 3 to 4 to obtain a solution containing the monoazo compound of the following formula (40). To the obtained monoazo solution, 32 parts of 35% hydrochloric acid and 6.9 parts of sodium nitrite were added again, and the mixture was stirred at 25-30 ° C. for 2 hours to be diazotized.
- Example 3 Add 18.3 parts of 4-aminobenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 10 parts of 35% hydrochloric acid at 10 ° C or lower, then add 6.9 parts of sodium nitrite. The mixture was stirred at 5 to 10 ° C. for 1 hour. A solution containing 23 parts of the compound represented by the following formula (42) is added thereto, and the coupling is completed at pH 3 to 4 to obtain a solution containing the monoazo compound of the following formula (43). Diazotization, coupling and crystallization were carried out in the same manner as in Example 2 except that the obtained monoazo compound (43) was used instead of the compound (40) to obtain 40 parts of the trisazo compound represented by the formula (10). . The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 566 nm.
- Example 4 The diazo compound diazo used in Example 3 was added to 200 parts of water and 34.5 parts of 6- (4′-methoxyphenyl) amino-1-naphthol-3-sulfonic acid dissolved in sodium carbonate to make it weakly alkaline. The solution is added to maintain pH 8-10 and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 37 parts of a trisazo compound represented by the formula (12). The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 580 nm.
- Example 5 Disazo compound of the following formula (44) in the same manner as in Example 2 except that 18.3 parts of 4-aminobenzenesulfonic acid as a starting material was changed to 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid Got. 30 parts of the trisazo compound represented by the above formula (13) was obtained by diazotization, coupling and crystallization in the same manner as in Example 4 except that the obtained disazo compound (44) was used instead of the above formula (43). Obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 580 nm.
- Example 6 To a solution obtained by adding 31.5 parts of 6-phenylamino-1-naphthol-3-sulfonic acid to 200 parts of water and dissolving it as weakly alkaline with sodium carbonate, the disazo compound of the above formula (44) was diazotized as in Example 2. The diazo solution obtained by conversion is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It salted out with sodium chloride and filtered to obtain 43 parts of a trisazo compound represented by the formula (14). The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 577 nm.
- Example 7 Add 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 32 parts of 35% hydrochloric acid at 10 ° C. or lower, and then add sodium nitrite 6. 9 parts were added and stirred at 5-10 ° C. for 1 hour. A solution containing 24.5 parts of the compound represented by the following formula (45) is added dropwise thereto to complete the coupling at pH 3 to 4 to obtain a solution containing the monoazo compound of the following formula (46). To the obtained monoazo solution, 32 parts of 35% hydrochloric acid and 6.9 parts of sodium nitrite were added again, and the mixture was stirred at 25-30 ° C. for 2 hours to be diazotized.
- Example 8 Add 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 32 parts of 35% hydrochloric acid at 10 ° C. or lower, and then add sodium nitrite 6. 9 parts were added and stirred at 5-10 ° C. for 1 hour.
- a monoazo compound obtained by adding 12.1 parts of 2,5-dimethylaniline and sodium carbonate to complete the coupling therewith was diazotized therewith and coupled with the above formula (38) according to Example 1, A disazo compound of formula (48) was obtained.
- the disazo compound of the above formula (48) was diazotized as in Example 2.
- the diazo solution obtained by conversion is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 33 parts of a trisazo compound represented by the formula (16).
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 581 nm.
- Example 9 The monoazo compound of the above formula (46) was diazotized and coupled with the above formula (38) according to Example 1 to obtain a disazo compound of the following formula (49).
- a solution obtained by adding 31.5 parts of 6-phenylamino-1-naphthol-3-sulfonic acid to 200 parts of water and dissolving it as weakly alkaline with sodium carbonate the disazo compound of the above formula (49) was diazotized as in Example 2.
- the diazo solution obtained by conversion is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 28 parts of a trisazo compound represented by the formula (17).
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 590 nm.
- Example 10 Add 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 32 parts of 35% hydrochloric acid at 10 ° C. or lower, and then add sodium nitrite 6. 9 parts were added and stirred at 5-10 ° C. for 1 hour. A solution containing 24.5 parts of the compound represented by the following formula (50) is dropped therein to complete the coupling at pH 3 to 4, thereby obtaining a solution containing the monoazo compound of the following formula (51). To the obtained monoazo solution, 32 parts of 35% hydrochloric acid and 6.9 parts of sodium nitrite were added again, and the mixture was stirred at 25-30 ° C. for 2 hours to be diazotized.
- a solution containing 24.5 parts of the compound represented by the following formula (50) is dropped therein to complete the coupling at pH 3 to 4, thereby obtaining a solution containing the monoazo compound of the following formula (51).
- the disazo compound of the above formula (52) was added to a solution obtained by adding 34.5 parts of 6- (4′-methoxyphenyl) amino-1-naphthol-3-sulfonic acid to 200 parts of water and dissolving it as weakly alkaline with sodium carbonate.
- the diazo solution obtained by diazotization as in Example 2 is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 33 parts of a trisazo compound represented by the formula (18).
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 578 nm.
- the disazo compound of the above formula (53) was added to a solution obtained by adding 34.5 parts of 6- (4′-methoxyphenyl) amino-1-naphthol-3-sulfonic acid to 200 parts of water and dissolving it as weakly alkaline with sodium carbonate.
- the diazo solution obtained by diazotization as in Example 2 is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 36 parts of a trisazo compound represented by the formula (19).
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 584 nm.
- Example 12 In the same manner as in Example 7, except that 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as a starting material was changed to 21.7 parts of 4-amino-3-sulfobenzoic acid, the above formula (20) 30 parts of a trisazo compound represented by The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 582 nm.
- Example 13 Add 18.9 parts of 5-acetylamino-2-aminobenzenesulfonic acid to 500 parts of water, dissolve with sodium hydroxide, cool, add 10 parts of 35% hydrochloric acid at 10 ° C. or lower, then add sodium nitrite 6 .9 parts was added and stirred at 5-10 ° C. for 1 hour. A solution containing 24.5 parts of the compound represented by the formula (38) is dropped therein to complete the coupling at pH 3 to 4 to obtain a solution containing the monoazo compound of the following formula (54). To the obtained monoazo solution, 32 parts of 35% hydrochloric acid was added again, and then 6.9 parts of sodium nitrite, and the mixture was stirred at 25-30 ° C.
- Example 14 200 parts of water and 8 parts of sodium hydroxide were added to 10 parts of the compound (21), stirred for 2 hours at 80 ° C., salted out with sodium chloride, filtered, and 7 parts of the trisazo compound represented by the formula (22). Got.
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 578 nm.
- Example 15 The above formula (23) was used in the same manner as in Example 13 except that 20.8 parts of 2-amino-5-nitrobenzenesulfonic acid was used instead of 18.9 parts of 5-acetylamino-2-aminobenzenesulfonic acid as the starting material. 30 parts of a trisazo compound represented by The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 582 nm.
- Example 16 To a solution obtained by adding 25.3 parts of 6-methylamino-1-naphthol-3-sulfonic acid to 200 parts of water and dissolving it as weakly alkaline with sodium carbonate, the disazo compound of the above formula (55) was diazotized as in Example 2. The diazo solution obtained by conversion is added so as to maintain the pH of 8 to 10, and stirred to complete the coupling reaction. It was salted out with sodium chloride and filtered to obtain 33 parts of a trisazo compound represented by the above formula (24). The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 562 nm.
- Example 17 In the same manner as in Example 6 except that 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as a starting material was changed to 19.7 parts of 4-amino-2-methylbenzenesulfonic acid, the above formula (25 44 parts of a trisazo compound represented by The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 578 nm.
- Example 18 It is represented by the formula (26) in the same manner as in Example 5 except that 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as a starting material is changed to 18.1 parts of 5-aminoisophthalic acid. 49 parts of a trisazo compound were obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 580 nm.
- Example 19 Other than changing 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid starting material to 43 parts of 5-amino-2- (6,8-disulfo-2H-naphthotriazol-2-yl) benzoic acid In the same manner as in Example 5, 49 parts of the trisazo compound represented by the formula (27) was obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 582 nm.
- Example 20 The above formula (6) was obtained in the same manner as in Example 6 except that 30.2 parts of 6-aminonaphthalene-1,3-disulfonic acid was used instead of 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as a starting material. 28 parts of the trisazo compound represented by 28) were obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 579 nm.
- Example 21 Instead of 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as starting material, 30.2 parts of 7-aminonaphthalene-1,3-disulfonic acid was converted from 3-methylaniline to 2,5-dimethyl A trisazo compound represented by the formula (29) was obtained in the same manner as in Example 13 except that the aniline was used. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 585 nm.
- Example 22 Patent Document 6 A trisazo compound obtained in the same manner as in Example 6 except that a monoazo compound represented by compound (22) described in Example 1 is used is heated to 75 ° C. so that sodium hydroxide becomes 5% by weight. Added and stirred for 1 hour. Then, neutralized to pH 8 with hydrochloric acid and crystallized with sodium chloride to obtain 20 parts of a trisazo compound represented by the above formula (30). The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 596 nm.
- Example 23 Example 5 except that instead of 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as the starting material, 66.1 parts of 6-amino-4- (3-sulfopropoxy) naphthalene-2-sulfonic acid was used. In the same manner as above, a trisazo compound represented by the above formula (31) was obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 590 nm.
- Example 24 Implemented except that 20.9 parts of 2-amino-5-methoxybenzenesulfonic acid as starting material was replaced with 44.1 parts of 2-amino-5- (3-sulfopropoxy) naphthalene-1,7-disulfonic acid In the same manner as in Example 5, a trisazo compound represented by the above formula (33) was obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 586 nm.
- Example 25 In the same manner as in Example 24, except that the secondary coupler of the compound of the formula (33) is changed from 12.1 parts of 2,5-dimethylaniline to 15.3 parts of 2,5-dimethoxyaniline, The indicated trisazo compound was obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 623 nm.
- Example 26 The final coupler of the compound of the formula (34) is replaced with 34.5 parts of 6- (4′-methoxyphenyl) amino-1-naphthol-3-sulfonic acid and 2- (5-hydroxy-7-sulfonaphthalen-2-yl ) -2H-naphthotriazole-6,8-disulfonic acid
- a trisazo compound represented by the formula (35) was obtained in the same manner as in Example 24 except that the amount was changed to 55.0 parts.
- the maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 557 nm.
- Example 27 In the same manner as in Example 24 except that the secondary coupler of the compound of the formula (35) is changed from 12.1 parts of 2,5-dimethylaniline to 13.7 parts of 2-methoxy-5-methylaniline, the formula (36) The trisazo compound shown by was obtained. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 596 nm.
- Example 28 The final coupler of the compound of formula (34) is replaced with 34.5 parts of 6- (4′-methoxyphenyl) amino-1-naphthol-3-sulfonic acid and 6- (4′-hydroxyphenylazo) -1-naphthol- A trisazo compound represented by the above formula (37) was obtained in the same manner as in Example 24 except that 33.4 parts of 3-sulfonic acid was changed to 55.0 parts. The maximum absorption wavelength of this compound in a 20% aqueous pyridine solution was 606 nm.
- Example 29 Polyvinyl alcohol having a thickness of 75 ⁇ m was immersed in an aqueous solution at 45 ° C. having a concentration of 0.03% of the dye of the compound (9) obtained in Example 1 and 0.1% of sodium sulfate for 4 minutes. This film was stretched 5 times at 50 ° C. in a 3% boric acid aqueous solution, washed with water and dried while maintaining a tension state, to obtain a polarizing film. The obtained polarizing film had a maximum absorption wavelength of 585 nm, a polarization rate of 99.9%, and had a high polarization rate.
- Examples 30-57 A polarizing film was obtained in the same manner as in Example 29 using the azo compounds described in Examples 2 to 28 as in the case of compound (9).
- Table 1 shows the maximum absorption wavelength and polarization rate of the obtained polarizing film. As shown in Table 1, polarizing films prepared using these compounds had a high polarization rate.
- Examples 58-59 A triacetyl cellulose film (TAC film; manufactured by Fuji Photo Film Co., Ltd .; trade name TD-80U) was laminated on both surfaces of the polarizing films obtained in Example 29 and Example 30 via an adhesive in an aqueous polyvinyl alcohol solution, and was adhered.
- a polarizing plate was obtained by bonding to glass using an agent. This polarizing plate was irradiated with light for 432 h with an accelerated xenon arc tester (accelerated xenon arc tester manufactured by Wacom), and the change in polarization rate before and after the irradiation was measured.
- the change rate of the polarization rate was calculated by ⁇ (polarization rate before irradiation) ⁇ (polarization rate after irradiation) ⁇ / (polarization rate before irradiation). As a result, it was 0.6% and 0.8%, respectively. It showed durability.
- Comparative Example 1 A polarizing film was prepared in the same manner as in Example 20 using the following compound (56) shown in Example 1 of Patent Document 2 instead of the compound (9) in Example 1, and laminated and polarized in the same manner as in Example 39. A board was used. This polarizing plate was irradiated with light for 432 h with an accelerated xenon arc tester (accelerated xenon arc tester manufactured by Wacom), and the change in polarization rate before and after the irradiation was measured. As a result of similarly calculating the change rate of the polarization rate, it was 4.5% as compared with the polarizing plates of Examples 39 and 40, and the durability was greatly inferior.
- accelerated xenon arc tester accelerated xenon arc tester manufactured by Wacom
- Examples 60-67 A polarizing plate was produced in the same manner as in Example 58 using the polarizing film obtained in Examples 33, 35, 41, 46, 47, 49, 52, and 53.
- This polarizing plate was irradiated with 200 hours of light with an accelerated xenon arc tester (manufactured by Suga Seiki Co., Ltd .; SX-75), and the change in polarization rate before and after the irradiation was measured.
- SX-75 accelerated xenon arc tester
- Example Polarizing film Polarization rate change rate (%) 60 Polarizing film of Example 33 1.8% 61 Polarizing film of Example 35 1.7% 62 Polarizing film of Example 41 2.0% 63 Polarizing film of Example 46 0.9% 64 Polarizing film of Example 47 2.5% 65 Polarizing film of Example 49 2.0% 66 Polarizing Film of Example 52 0.6% 67 Polarizing film of Example 53 0.8% Comparative Example 2 Polarizing film of Comparative Example 2 4.4%
- Comparative Example 2 instead of the compound of Example 33, a polarizing film prepared in the same manner as the compound (41) of Patent Document 5 and Example 7 was laminated in the same manner as in Example 33. Irradiated with an accelerated xenon arc tester (manufactured by Suga Seiki Co., Ltd .; SX-75) for 200 h. The change in the degree of polarization before and after the light irradiation was 4.4%, respectively, which was significantly inferior to the compounds of the examples. It was.
- Example 68 The compound (13) obtained in Example 5 was 0.2% of dye, 0.07% of C.I. Direct Orange 39, 0.02% of C.I. Direct Red 81, and 0.1% of sodium sulfate.
- a polarizing film was prepared in the same manner as in Example 20 except that a 45 ° C. aqueous solution having a concentration of% was used.
- a TAC film film thickness: 80 ⁇ m, trade name: TD-80U, manufactured by Fuji Photo Film Co., Ltd.
- a UV (ultraviolet) curable hard of about 10 ⁇ m on one side of the TAC film on the other side.
- the film on which the coating layer was formed was pasted using a PVA-based adhesive to obtain the polarizing plate of the present invention.
- a polarizing plate with an adhesive layer is formed by applying an acrylic ester adhesive on one side of this polarizing plate, and AR (antireflection) multi-coating is applied to the outside of the hard coat layer by vacuum deposition, and the size is 30 mm ⁇ 40 mm. It was cut into a piece and attached to a glass plate with a transparent single-sided AR layer of the same size to obtain a polarizing plate of the present invention (for a liquid crystal projector green channel) with an AR support.
- the polarizing plate of this example has a maximum absorption wavelength ( ⁇ max) of 570 nm, the single plate average light transmittance at 500 to 580 nm is 45%, the average light transmittance at orthogonal positions is 0.02%, and has a high degree of polarization.
- ⁇ max maximum absorption wavelength
- the polarizing plate of this example had a high polarization rate, and exhibited durability over a long period of time even in a high temperature and high humidity state. It also had excellent light resistance against long-term exposure.
- the azo compound and its salt of the present invention can be suitably used as a raw material for a polarizing plate.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
さらなる目的はカラー液晶プロジェクターの3原色に対応した、明るさと偏光性能、耐久性及び耐光性のいずれもが良好である高性能な偏光板を提供することにある。
(1)式(1)又は(2)
(式中、Aは少なくとも1つの置換基を有するフェニル基又はナフチル基を示し、R1~R4は少なくとも1つがスルホン基を有する低級アルコキシル基であり、それ以外は各々独立に、水素原子、低級アルキル基、又は低級アルコキシル基を示し、Xは置換基を有してもよいアミノ基、置換基を有してもよいベンゾイルアミノ基、置換基を有してもよいフェニルアミノ基、置換基を有してもよいフェニルアゾ基、又は置換基を有してもよいナフトトリアゾール基を示す。)
で示されるアゾ化合物及びその塩。
(2)Xが置換基を有してもよいベンゾイルアミノ基、置換基を有してもよいフェニルアミノ基、置換基を有してもよいフェニルアゾ基、又は置換基を有してもよいナフトトリアゾール基であって、これらの置換基は、水素原子、低級アルキル基、低級アルコキシル基、ヒドロキシル基、カルボキシル基、スルホン基、アミノ基又は置換アミノ基である、(1)に記載のアゾ化合物及びその塩。
(3)Xが式(3)
(式中、R5及びR6は各々独立に水素原子、メチル基、メトキシ基、スルホン基、アミノ基又は置換アミノ基を示す。)
で示されるフェニルアミノ基である、(1)又は(2)に記載のアゾ化合物及びその塩。
(4)Xが式(4)
(式中、R7は水素原子、ヒドロキシル基、アミノ基又は置換アミノ基を示す。)
で示されるベンゾイルアミノ基である、(1)又は(2)に記載のアゾ化合物及びその塩。
(5)Xが式(5)
(式中、mは1又は2を示す。)
で示されるナフトトリアゾール基である、(1)又は(2)に記載のアゾ化合物及びその塩。
(6)Xが式(6)
(式中、R8~R10は各々独立に水素原子、ヒドロキシル基、低級アルキル基、低級アルコキシル基、アミノ基、又は置換アミノ基を示す。)
で示されるフェニルアゾ基である、(1)又は(2)に記載のアゾ化合物及びその塩。
(7)Aが少なくとも1つの置換基を有するフェニル基又はナフチル基であって、その置換基の少なくとも1つがスルホン基又はカルボキシル基である、(1)乃至(6)のいずれかに記載のアゾ化合物及びその塩。
(8)Aが2つ以上の置換基を有するフェニル基であって、その置換基の少なくとも1つがスルホン基であり、それ以外の置換基は、低級アルキル基、低級アルコキシル基、カルボキシル基、ニトロ基、アミノ基、又は置換アミノ基である、(3)乃至(7)のいずれかに記載のアゾ化合物及びその塩。
(9)Aが式(7)
(式中、R11及びR12は、一方がスルホン基であり、他方がスルホン基、低級アルキル基、低級アルコキシル基、カルボキシル基、アミノ基、又は置換アミノ基を示す。)
で示される、(3)乃至(8)のいずれかに記載のアゾ化合物及びその塩。
(10)Aが式(8)
(式中、R13は水素原子、ヒドロキシル基又はスルホン基を有する低級アルコキシル基を示し、nは1~3を示す。)
で示される、(3)乃至(8)のいずれかに記載のアゾ化合物及びその塩。
(11)R1~R4のうち少なくとも1つがスルホプロポキシ基又はスルホブトキシ基であり、それ以外が各々独立に水素原子、メチル基又はメトキシ基である、(1)乃至(10)のいずれかに記載のアゾ化合物及びその塩。
(12)(1)乃至(11)のいずれかに記載のアゾ化合物及び/又はその塩を含有する偏光膜基材を含む、染料系偏光膜。
(13)(1)乃至(11)のいずれかに記載のアゾ化合物及び/又はその塩、並びにこれら以外の有機染料を1種類以上を含有する偏光膜基材を含む、染料系偏光膜。
(14)(1)乃至(11)のいずれかに記載のアゾ化合物及び/又はその塩を2種類以上、並びにこれら以外の有機染料を1種類以上に含有する偏光膜基材を含む、染料系偏光膜。
(15)偏光膜基材がポリビニルアルコール樹脂又はその誘導体からなるフィルムである、(12)乃至(14)のいずれかに記載の染料系偏光膜。
(16)(12)乃至(14)のいずれかに記載の染料系偏光膜の少なくとも一方の面に透明保護層を貼合して得られうる、染料系偏光板。
(17)(12)乃至(16)のいずれかに記載の染料系偏光膜又は染料系偏光板を用いる、液晶表示用偏光板。
(18)(12)乃至(16)のいずれかに記載の染料系偏光膜又は染料系偏光板を用いる、液晶プロジェクター用カラー偏光板。
(19)(16)乃至(18)いずれかに記載の染料系偏光板を用いる、液晶表示装置。
次に、本発明で使用する前記式(1)で表されるアゾ化合物の具体例を以下に挙げる。尚、式中のスルホン基、カルボキシル基及び水酸基は遊離酸の形で表す。
偏光膜と保護膜を貼り合わせるのに用いうる接着剤としては、ポリビニルアルコール系接着剤、ウレタンエマルジョン系接着剤、アクリル系接着剤、ポリエステル-イソシアネート系接着剤などが挙げられ、ポリビニルアルコール系接着剤が好適である。
4-(4’-アミノフェニル)-アゾベンゼンスルホン酸27.7部を水500部に加え、水酸化ナトリウムで溶解する。35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、1時間攪拌する。これに特許文献6実施例1に記載の下記式(38)の化合物24.5部を含む溶液を滴下しpH3~4でカップリングを完結させ、塩化ナトリウムで晶析させることにより下記式(39)で示されるジスアゾ化合物を得た。
得られたジスアゾ化合物に35%塩酸32部を、次に亜硝酸ナトリウム6.9部を加え、25~30℃で2時間攪拌し、ジアゾ化する。一方、6-(4’-アミノベンゾイル)アミノ-1-ナフトール-3-スルホン酸31.0部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解し、この液に先に得られたモノアゾ化合物のジアゾ化物をpH8~10を保って注入し、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(9)で示されるトリスアゾ化合物45部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は575nmであった。
4-アミノベンゼンスルホン酸18.3部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ上記式(38)の化合物24.5部を含む溶液を滴下しpH3~4でカップリングを完結させ下記式(40)のモノアゾ化合物を含む溶液を得る。
得られたモノアゾ溶液に再度35%塩酸32部を、次に亜硝酸ナトリウム6.9部を加え、25~30℃で2時間攪拌し、ジアゾ化し、これに2,5-ジメチルアニリン12.1部、炭酸ナトリウムを加えpH3としてカップリングを完結させた。得られた溶液から塩化ナトリウムで塩析し、濾過して下記式(41)のジスアゾ化合物を得た。
化合物(39)の代わりに得られたジスアゾ化合物(41)を用いる以外は実施例1と同様にジアゾ化、カップリング、晶析して前記式(10)で示されるトリスアゾ化合物46.0部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は568nmであった。
4-アミノベンゼンスルホン酸18.3部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ下記式(42)で示される化合物23部を含む溶液を加え、pH3~4でカップリングを完結させ下記式(43)のモノアゾ化合物を含む溶液を得る。
化合物(40)の代わりに得られたモノアゾ化合物(43)を用いる以外は実施例2と同様にジアゾ化、カップリング、晶析して前記式(10)で示されるトリスアゾ化合物40部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は566nmであった。
6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に実施例3で使用したジスアゾ化合物のジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(12)で示されるトリスアゾ化合物37部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は580nmであった。
出発原料の4-アミノベンゼンスルホン酸18.3部の代わりに2-アミノ-5-メトキシベンゼンスルホン酸20.9部に変更する以外は実施例2と同様にして下記式(44)のジスアゾ化合物を得た。
上記式(43)の代わりに得られたジスアゾ化合物(44)を用いる以外は実施例4と同様にしてジアゾ化、カップリング、晶析して前記式(13)で示されるトリスアゾ化合物30部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は580nmであった。
6-フェニルアミノ-1-ナフトール-3-スルホン酸31.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(44)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(14)で示されるトリスアゾ化合物43部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は577nmであった。
2-アミノ-5-メトキシベンゼンスルホン酸20.9部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ下記式(45)で示される化合物24.5部を含む溶液を滴下しpH3~4でカップリングを完結させ、下記式(46)のモノアゾ化合物を含む溶液を得る。
得られたモノアゾ溶液に再度35%塩酸32部を、次に亜硝酸ナトリウム6.9部を加え、25~30℃で2時間攪拌し、ジアゾ化し、これに2,5-ジメチルアニリン12.1部、炭酸ナトリウムを加えpH3としてカップリングを完結させた。得られた溶液から塩化ナトリウムで塩析し、濾過して下記式(47)のジスアゾ化合物を得た。
6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(47)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(15)で示されるトリスアゾ化合物37部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は581nmであった。
2-アミノ-5-メトキシベンゼンスルホン酸20.9部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ2,5-ジメチルアニリン12.1部、炭酸ナトリウムを加えpH3としてカップリングを完結させて得られるモノアゾ化合物をジアゾ化し、実施例1に倣って上記式(38)とカップリングし、下記式(48)のジスアゾ化合物を得た。
6-フェニルアミノ-1-ナフトール-3-スルホン酸31.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(48)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(16)で示されるトリスアゾ化合物33部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は581nmであった。
上記式(46)のモノアゾ化合物をジアゾ化し、実施例1に倣って上記式(38)とカップリングし、下記式(49)のジスアゾ化合物を得た。
6-フェニルアミノ-1-ナフトール-3-スルホン酸31.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(49)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(17)で示されるトリスアゾ化合物28部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は590nmであった。
2-アミノ-5-メトキシベンゼンスルホン酸20.9部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ下記式(50)で示される化合物24.5部を含む溶液を滴下しpH3~4でカップリングを完結させ、下記式(51)のモノアゾ化合物を含む溶液を得る。
得られたモノアゾ溶液に再度35%塩酸32部を、次に亜硝酸ナトリウム6.9部を加え、25~30℃で2時間攪拌し、ジアゾ化し、これに2,5-ジメチルアニリン12.1部、炭酸ナトリウムを加えpH3としてカップリングを完結させた。得られた溶液から塩化ナトリウムで塩析し、濾過して下記式(52)のジスアゾ化合物を得た。
6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(52)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(18)で示されるトリスアゾ化合物33部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は578nmであった。
6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(53)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(19)で示されるトリスアゾ化合物36部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は584nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに4-アミノ-3-スルホ安息香酸21.7部に変更する以外は実施例7と同様にして前記式(20)で示されるトリスアゾ化合物30部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は582nmであった。
5-アセチルアミノ-2-アミノベンゼンスルホン酸18.9部を水500部に加え、水酸化ナトリウムで溶解し、冷却し10℃以下で、35%塩酸32部を加え、次に亜硝酸ナトリウム6.9部を加え、5~10℃で1時間攪拌した。そこへ前記式(38)で示される化合物24.5部を含む溶液を滴下しpH3~4でカップリングを完結させ、下記式(54)のモノアゾ化合物を含む溶液を得る。
得られたモノアゾ溶液に再度35%塩酸32部を、次に亜硝酸ナトリウム6.9部を加え、25~30℃で2時間攪拌し、ジアゾ化し、これに3-メチルアニリン10.7部、炭酸ナトリウムを加えpH3としてカップリングを完結させた。得られた溶液から塩化ナトリウムで塩析し、濾過して下記式(55)のジスアゾ化合物を得た。
6-(4’-アミノ-3’-スルホフェニル)アミノ-1-ナフトール-3-スルホン酸41.0部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に上記式(55)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(21)で示されるトリスアゾ化合物18部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は572nmであった。
化合物(21)10部に水200部、水酸化ナトリウム8部を加え、80℃で2時間攪拌した後、塩化ナトリウムで塩析し、濾過して前記式(22)で示されるトリスアゾ化合物7部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は578nmであった。
出発原料の5-アセチルアミノ-2-アミノベンゼンスルホン酸18.9部の代わりに2-アミノ-5-ニトロベンゼンスルホン酸20.8部に変更する以外は実施例13と同様にして前記式(23)で示されるトリスアゾ化合物30部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は582nmであった。
6-メチルアミノ-1-ナフトール-3-スルホン酸25.3部を水200部に加え、炭酸ナトリウムで弱アルカリ性として溶解した液に前記式(55)のジスアゾ化合物を実施例2と同様にジアゾ化して得られたジアゾ液をpH8~10を保つように加え、攪拌して、カップリング反応を完結させる。塩化ナトリウムで塩析し、濾過して前記式(24)で示されるトリスアゾ化合物33部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は562nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに4-アミノ-2-メチルベンゼンスルホン酸19.7部に変更する以外は実施例6と同様にして前記式(25)で示されるトリスアゾ化合物44部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は578nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに5-アミノイソフタル酸酸18.1部に変更する以外は実施例5と同様にして前記式(26)で示されるトリスアゾ化合物49部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は580nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに5-アミノ-2-(6,8-ジスルホ-2H-ナフトトリアゾール-2-イル)安息香酸43部に変更する以外は実施例5と同様にして前記式(27)で示されるトリスアゾ化合物49部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は582nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに6-アミノナフタレン-1,3-ジスルホン酸30.2部に変更する以外は実施例6と同様にして前記式(28)で示されるトリスアゾ化合物44部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は579nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに7-アミノナフタレン-1,3-ジスルホン酸30.2部、2次カップラーを3-メチルアニリンから2,5-ジメチルアニリンに変更する以外は実施例13と同様にして前記式(29)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は585nmであった。
特許文献6実施例1に記載の化合物(22)で示されるモノアゾ化合物用いる以外は実施例6と同様にして得られるトリスアゾ化合物を75℃に加熱し、水酸化ナトリウムを5重量%となるように添加して1時間撹拌した。その後、塩酸でpH8に中和、塩化ナトリウムで晶析することにより前記式(30)で示されるトリスアゾ化合物20部を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は596nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに6-アミノ-4-(3-スルホプロポキシ)ナフタレン-2-スルホン酸36.1部に変更する以外は実施例5と同様にして前記式(31)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は590nmであった。
出発原料の2-アミノ-5-メトキシベンゼンスルホン酸20.9部の代わりに2-アミノ-5-(3-スルホプロポキシ)ナフタレン-1,7-ジスルホン酸44.1部に変更する以外は実施例5と同様にして前記式(33)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は586nmであった。
前記式(33)の化合物の2次カップラーを2,5-ジメチルアニリン12.1部から2,5-ジメトキシアニリン15.3部に代える以外は実施例24と同様にして前記式(34)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は623nmであった。
前記式(34)の化合物の最終カップラーを6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を2-(5-ヒドロキシ-7-スルホナフタレン-2-イル)-2H-ナフトトリアゾール-6,8-ジスルホン酸55.0部に変更する以外は実施例24と同様にして前記式(35)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は557nmであった。
前記式(35)の化合物の2次カップラーを2,5-ジメチルアニリン12.1部から2-メトキシー5-メチルアニリン13.7部に代える以外は実施例24と同様にして前記式(36)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は596nmであった。
前記式(34)の化合物の最終カップラーを6-(4’-メトキシフェニル)アミノ-1-ナフトール-3-スルホン酸34.5部を6-(4’-ヒドロキシフェニルアゾ)-1-ナフトール-3-スルホン酸33.4部55.0部に変更する以外は実施例24と同様にして前記式(37)で示されるトリスアゾ化合物を得た。この化合物の20%ピリジン水溶液中の極大吸収波長は606nmであった。
実施例1で得られた化合物(9)の染料の0.03%および芒硝0.1%の濃度とした45℃の水溶液に、厚さ75μmのポリビニルアルコールを4分間浸漬した。このフィルムを3%ホウ酸水溶液中で50℃で5倍に延伸し、緊張状態を保ったまま水洗、乾燥して偏光膜を得た。
得られた偏光膜の極大吸収波長は585nmであり、偏光率は99.9%であり、高い偏光率を有していた。
化合物(9)と同様に、実施例2~28に記載のアゾ化合物を用いて、実施例29と同様にして偏光膜を得た。得られた偏光膜の極大吸収波長及び偏光率を表1に示す。表1に示した通り、これらの化合物を用いて作成した偏光膜は、高い偏光率を有していた。
実施例 アゾ化合物の塩 極大吸収波長(nm) 偏光率(%)
29 前記式(9)の化合物 585 99.9
30 前記式(10)の化合物 562 99.9
31 前記式(11)の化合物 558 99.9
32 前記式(12)の化合物 586 99.9
33 前記式(13)の化合物 586 99.9
34 前記式(14)の化合物 575 99.9
35 前記式(15)の化合物 584 99.9
36 前記式(16)の化合物 593 99.9
37 前記式(17)の化合物 593 99.9
38 前記式(18)の化合物 590 99.9
39 前記式(19)の化合物 588 99.9
40 前記式(20)の化合物 586 99.9
41 前記式(21)の化合物 584 99.9
42 前記式(22)の化合物 591 99.9
43 前記式(23)の化合物 590 99.9
44 前記式(24)の化合物 558 99.9
45 前記式(25)の化合物 577 99.9
46 前記式(26)の化合物 589 99.9
47 前記式(27)の化合物 591 99.9
48 前記式(28)の化合物 578 99.9
49 前記式(29)の化合物 593 99.9
50 前記式(30)の化合物 601 99.9
51 前記式(31)の化合物 587 99.9
52 前記式(32)の化合物 580 99.9
53 前記式(33)の化合物 582 99.9
54 前記式(34)の化合物 631 99.9
55 前記式(35)の化合物 557 99.9
56 前記式(36)の化合物 593 99.9
57 前記式(37)の化合物 608 99.9
実施例29及び実施例30で得られた偏光膜の両面にポリビニルアルコール水溶液の接着剤を介してトリアセチルセルロースフィルム(TACフィルム;富士写真フィルム社製;商品名TD-80U)をラミネートし、粘着剤を用いてガラスに貼合して偏光板とした。この偏光板を促進キセノンアーク試験機(ワコム社製促進キセノンアーク試験機)で432h光照射し、照射前後の偏光率変化を測定した。偏光率変化率を{(照射前の偏光率)-(照射後の偏光率)}/(照射前の偏光率)で算出した結果、それぞれ0.6%、0.8%であり、優れた耐久性を示していた。
実施例1の化合物(9)に代えて特許文献2実施例1で示される下記化合物(56)を用いて実施例20と同様に偏光膜を作成し、実施例39と同様にラミネートして偏光板とした。この偏光板を促進キセノンアーク試験機(ワコム社製促進キセノンアーク試験機)で432h光照射し、照射前後の偏光率変化を測定した。偏光率変化率を同様に算出した結果、実施例39,40の偏光板に比べ、4.5%であり大きく耐久性が劣っていた。
実施例33、35、41、46、47、49、52、53で得られた偏光膜を用いて実施例58と同様に偏光板を作成した。この偏光板を促進キセノンアーク試験機(スガ精機社製;SX-75)で200h光照射し、照射前後の偏光率変化を測定した。偏光率変化率を{(照射前の偏光率)-(照射後の偏光率)}/(照射前の偏光率)で算出した結果、それぞれ表2で示す変化であり、優れた耐久性を示していた。
実施例 偏光膜 偏光率変化率(%)
60 実施例33の偏光膜 1.8%
61 実施例35の偏光膜 1.7%
62 実施例41の偏光膜 2.0%
63 実施例46の偏光膜 0.9%
64 実施例47の偏光膜 2.5%
65 実施例49の偏光膜 2.0%
66 実施例52の偏光膜 0.6%
67 実施例53の偏光膜 0.8%
比較例2 比較例2の偏光膜 4.4%
実施例33の化合物に代えて、特許文献5、実施例7の化合物(41)と同様にして作成した偏光膜を実施例33と同様にラミネートした。促進キセノンアーク試験機(スガ精機社製;SX-75)で200h光照射し、光照射前後の偏光度の変化は、それぞれ4.4%であり、実施例化合物に比べ大きく耐久性が劣っていた。
実施例5で得られた化合物(13)を染料0.2%、シー・アイ・ダイレクト・オレンジ39を0.07%、シー・アイ・ダイレイクト・レッド81を0.02%及び芒硝0.1%の濃度とした45℃の水溶液を用いる以外は実施例20と同様にして偏光膜を作成した。得られた偏光膜の一方の面にTAC膜(膜厚80μm、商品名TD-80U、富士写真フィルム社製)、他方の面に該TAC膜の片側に約10μmのUV(紫外線)硬化型ハードコート層を形成したフィルムをPVA系の接着剤を使用して貼付し、本発明の偏光板を得た。この偏光板の片側にアクリル酸エステル系の粘着剤を付与して粘着層付き偏光板とし、さらにハードコート層の外側に真空蒸着によりAR(反射防止)マルチコート加工を施し、30mm×40mmの大きさにカットし、同じ大きさの透明な片面AR層付きのガラス板に貼付してAR支持体付きの本発明の偏光板(液晶プロジェクタ緑色チャンネル用)を得た。本実施例の偏光板は、極大吸収波長(λmax)570nmであり、500~580nmにおける単板平均光透過率は45%、直交位の平均光透過率は0.02%であり、高い偏光度を有し本発明の偏光板(液晶プロジェクタ緑色チャンネル用)を得た。本実施例の偏光板は、高い偏光率を有し、かつ高温且つ高湿の状態でも長時間にわたる耐久性を示した。また長時間暴露に対する耐光性も優れていた。
Claims (19)
- Xが置換基を有してもよいベンゾイルアミノ基、置換基を有してもよいフェニルアミノ基、置換基を有してもよいフェニルアゾ基、又は置換基を有してもよいナフトトリアゾール基であって、これらの置換基は、水素原子、低級アルキル基、低級アルコキシル基、ヒドロキシル基、カルボキシル基、スルホン基、アミノ基又は置換アミノ基である、請求項1に記載のアゾ化合物及びその塩。
- Aが少なくとも1つの置換基を有するフェニル基又はナフチル基であって、その置換基の少なくとも1つがスルホン基又はカルボキシル基である、請求項1乃至6のいずれか一項に記載のアゾ化合物及びその塩。
- Aが2つ以上の置換基を有するフェニル基であって、その置換基の少なくとも1つがスルホン基であり、それ以外の置換基は、低級アルキル基、低級アルコキシル基、カルボキシル基、ニトロ基、アミノ基、又は置換アミノ基である、請求項3乃至7のいずれか一項に記載のアゾ化合物及びその塩。
- R1~R4のうち少なくとも1つがスルホプロポキシ基又はスルホブトキシ基であり、それ以外が各々独立に水素原子、メチル基又はメトキシ基のである、請求項1乃至10のいずれか一項に記載のアゾ化合物及びその塩。
- 請求項1乃至11のいずれか一項に記載のアゾ化合物及び/又はその塩を含有する偏光膜基材を含む、染料系偏光膜。
- 請求項1乃至11のいずれか一項に記載のアゾ化合物及び/又はその塩、並びにこれら以外の有機染料を1種類以上を含有する偏光膜基材を含む、染料系偏光膜。
- 請求項1乃至11のいずれか一項に記載のアゾ化合物及び/又はその塩を2種類以上、並びにこれら以外の有機染料を1種類以上に含有する偏光膜基材を含む、染料系偏光膜。
- 偏光膜基材がポリビニルアルコール樹脂又はその誘導体からなるフィルムである、請求項12乃至14のいずれか一項に記載の染料系偏光膜。
- 請求項12乃至14のいずれか一項に記載の染料系偏光膜の少なくとも一方の面に透明保護層を貼合して得られうる、染料系偏光板。
- 請求項12乃至16のいずれか一項に記載の染料系偏光膜又は染料系偏光板を用いる、液晶表示用偏光板。
- 請求項12乃至16のいずれか一項に記載の染料系偏光膜又は染料系偏光板を用いる、液晶プロジェクター用カラー偏光板。
- 請求項16乃至18いずれか一項に記載の染料系偏光板を用いる、液晶表示装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980118425.XA CN102037082B (zh) | 2008-05-20 | 2009-05-19 | 偶氮化合物及包含所述偶氮化合物的染料基偏振膜和偏振片 |
JP2010513020A JP5544289B2 (ja) | 2008-05-20 | 2009-05-19 | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 |
KR1020107025941A KR101672555B1 (ko) | 2008-05-20 | 2009-05-19 | 아조 화합물 및 이를 함유하는 염료계 편광막 및 편광판 |
US12/993,643 US9354371B2 (en) | 2008-05-20 | 2009-05-19 | Azo compounds, and dye-based polarizing films and polarizing plates comprising the same |
HK11106142.1A HK1152066A1 (en) | 2008-05-20 | 2011-06-15 | Azo compounds, and dye-based polarizing films and polarizing plates comprising the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-132312 | 2008-05-20 | ||
JP2008132312 | 2008-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009142193A1 true WO2009142193A1 (ja) | 2009-11-26 |
Family
ID=41340126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/059173 WO2009142193A1 (ja) | 2008-05-20 | 2009-05-19 | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9354371B2 (ja) |
JP (2) | JP5544289B2 (ja) |
KR (1) | KR101672555B1 (ja) |
CN (2) | CN102037082B (ja) |
HK (2) | HK1152066A1 (ja) |
TW (1) | TWI565761B (ja) |
WO (1) | WO2009142193A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130302538A1 (en) * | 2011-02-07 | 2013-11-14 | Polatechno Co., Ltd. | Azo Compound, Dye-Based Polarizing Film And Polarizing Plate |
US20130314786A1 (en) * | 2011-02-07 | 2013-11-28 | Polatechno Co., Ltd. | Azo Compound And Salt Thereof, And Dye-Based Polarizing Film And Polarizing Plate Containing The Same |
JP2014167089A (ja) * | 2008-05-20 | 2014-09-11 | Nippon Kayaku Co Ltd | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 |
JPWO2013035751A1 (ja) * | 2011-09-09 | 2015-03-23 | 日本化薬株式会社 | 偏光素子および偏光板 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7931702B2 (en) | 2006-06-01 | 2011-04-26 | Nippon Kayaku Kabushiki Kaisha | Azo compound and salt thereof, and dye-containing polarizing film comprising the compound or salt |
JP5225839B2 (ja) | 2006-06-13 | 2013-07-03 | 日本化薬株式会社 | アゾ化合物及びそれらを含有する染料系偏光膜 |
US20100257678A1 (en) * | 2006-06-22 | 2010-10-14 | Yuichi Sadamitsu | Azo compound and dye polarizing film containing the same |
TWI406907B (zh) * | 2007-11-02 | 2013-09-01 | Nippon Kayaku Kk | 偶氮化合物及含有彼等之染料系偏光膜 |
WO2009154055A1 (ja) * | 2008-06-17 | 2009-12-23 | 日本化薬株式会社 | アゾ化合物及びその塩、並びにそれらを含有する染料系偏光膜並びに偏光板 |
KR20150004795A (ko) * | 2012-04-13 | 2015-01-13 | 니폰 가야꾸 가부시끼가이샤 | 편광소자 및 편광판 |
US9207359B2 (en) * | 2012-11-07 | 2015-12-08 | Samsung Electronics Co., Ltd. | Polarizing film and display device including the polarizing film |
US9194980B2 (en) * | 2012-11-07 | 2015-11-24 | Samsung Electronics Co., Ltd. | Polarizing film and display device including the polarizing film |
WO2014196414A2 (ja) * | 2013-06-03 | 2014-12-11 | 日本化薬株式会社 | 青色発光素子を有する表示装置用偏光素子又は偏光板 |
KR102118036B1 (ko) * | 2013-11-06 | 2020-06-02 | 삼성전자주식회사 | 편광 필름용 조성물, 편광 필름 및 표시 장치 |
CN111205671A (zh) * | 2016-02-26 | 2020-05-29 | 日本化药株式会社 | 偶氮化合物或其盐以及含有偶氮化合物或其盐的偏振膜 |
JP6773487B2 (ja) * | 2016-08-29 | 2020-10-21 | 野本 宏 | 腕時計用プリズム構造体 |
JP7197471B2 (ja) * | 2017-05-19 | 2022-12-27 | 日本化薬株式会社 | 偏光素子、並びにこれを用いた偏光板及び液晶表示装置 |
KR20210093159A (ko) * | 2020-01-17 | 2021-07-27 | 주식회사 엘지화학 | 모노-아조 이색성 염료 화합물, 이를 포함하는 편광판 조성물, 그로부터 형성된 편광판, 이를 구비하는 광학 소자 |
WO2021145582A1 (ko) * | 2020-01-17 | 2021-07-22 | 주식회사 엘지화학 | 모노-아조 이색성 염료 화합물, 이를 포함하는 편광판 조성물, 그로부터 형성된 편광판, 이를 구비하는 광학 소자 |
CN116018381A (zh) * | 2020-09-08 | 2023-04-25 | 日本化药株式会社 | 含有偶氮化合物或其盐的偏光膜、偏光板及液晶显示装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2622748B2 (ja) | 1989-06-12 | 1997-06-18 | 日本化薬株式会社 | 水溶性アゾ染料及びこれを含有する偏光膜 |
JP2001033627A (ja) | 1999-07-26 | 2001-02-09 | Nippon Kayaku Co Ltd | 染料系偏光膜 |
WO2004013232A1 (ja) * | 2002-08-05 | 2004-02-12 | Nippon Kayaku Kabushiki Kaisha | トリスアゾ化合物、水性インク組成物および着色体 |
JP2004051645A (ja) | 2001-06-28 | 2004-02-19 | Sumitomo Chem Co Ltd | ポリアゾ化合物又はその塩、及びそれらを含有する染料系偏光膜 |
JP2004075719A (ja) | 2002-08-09 | 2004-03-11 | Nippon Kayaku Co Ltd | トリスアゾ化合物、水性インク組成物及び着色体 |
JP2004323712A (ja) * | 2003-04-25 | 2004-11-18 | Nippon Kayaku Co Ltd | ジスアゾ化合物、水性インク組成物及び着色体 |
WO2005075572A1 (ja) | 2004-02-04 | 2005-08-18 | Nippon Kayaku Kabushiki Kaisha | アゾ化合物、それを含有する偏光膜及び偏光板 |
WO2007148757A1 (ja) | 2006-06-22 | 2007-12-27 | Nippon Kayaku Kabushiki Kaisha | アゾ化合物及びそれらを含有する染料系偏光膜 |
Family Cites Families (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2004250A (en) | 1932-02-29 | 1935-06-11 | Gen Aniline Works Inc | Azo-dyestuffs, and process of making same |
US2270451A (en) | 1939-07-03 | 1942-01-20 | Geigy Ag J R | Stilbene dyestuffs and their manufacture |
US2671775A (en) | 1950-06-22 | 1954-03-09 | Ciba Ltd | Trisazo dyestuffs |
GB736619A (en) | 1952-02-16 | 1955-09-14 | Bayer Ag | Polyazo dyestuffs |
US2817659A (en) | 1955-06-27 | 1957-12-24 | Geigy Ag J R | Polyazo dyestuffs |
DE1285644B (de) | 1960-11-26 | 1968-12-19 | Bayer Ag | Verfahren zur Herstellung metallhaltiger Azofarbstoffe |
FR1541972A (fr) | 1966-10-26 | 1968-10-11 | Bayer Ag | Colorants disazoïques |
JPS4718548U (ja) | 1971-04-02 | 1972-11-01 | ||
US4118232A (en) | 1971-04-07 | 1978-10-03 | Ciba-Geigy Ag | Photographic material containing sulphonic acid group containing disazo dyestuffs |
US4051123A (en) | 1972-03-28 | 1977-09-27 | Ciba-Geigy Ag | Sulfonic-acid-group containing disazo dyestuffs |
CH654588A5 (de) | 1981-12-31 | 1986-02-28 | Sandoz Ag | Metallisierte stilbenazoverbindungen, verfahren zur herstellung und verwendung. |
DE3236238A1 (de) | 1982-09-30 | 1984-05-24 | Sandoz-Patent-GmbH, 7850 Lörrach | Metallkomplexe sulfogruppenhaltiger disazoverbindungen, verfahren zur herstellung und verwendung |
DE3306696A1 (de) | 1983-02-25 | 1984-08-30 | Bayer Ag, 5090 Leverkusen | Reaktivfarbstoffe |
JPH0718548B2 (ja) | 1983-10-19 | 1995-03-06 | 松下電器産業株式会社 | 高電圧発生装置 |
JPS60115671A (ja) | 1983-11-25 | 1985-06-22 | Orient Kagaku Kogyo Kk | 水性インキ組成物 |
DE3463390D1 (en) | 1983-11-25 | 1987-06-04 | Orient Chemical Ind | Aqueous ink compositions |
JPS60156759A (ja) | 1984-01-25 | 1985-08-16 | Nippon Kayaku Co Ltd | 水溶性ジスアゾ化合物 |
JPS60168743A (ja) | 1984-02-14 | 1985-09-02 | Nippon Kayaku Co Ltd | 着色されたポリビニルアルコ−ル系フイルム |
JPS60243176A (ja) | 1984-05-16 | 1985-12-03 | Canon Inc | ジスアゾ系染料含有記録液 |
JPS60243157A (ja) | 1984-05-16 | 1985-12-03 | Mitsubishi Chem Ind Ltd | 水溶性ジスアゾ化合物 |
EP0374655B1 (de) | 1988-12-23 | 1993-09-15 | Bayer Ag | Lichtpolarisierende Filme oder Folien enthaltende Stilbenfarbstoffe |
US5272259A (en) | 1988-12-23 | 1993-12-21 | Bayer Aktiengesellschaft | Stilbene dyestuffs and light-polarizing films or sheets containing stilbene |
CA2076560A1 (en) | 1991-08-29 | 1993-03-01 | Kazuya Ogino | Dye-containing polarizing film |
JP3205096B2 (ja) | 1991-12-26 | 2001-09-04 | 三井化学株式会社 | 水溶性アゾ染料及び該染料を用いた偏光フィルム |
DE69228591T2 (de) | 1991-12-26 | 1999-07-01 | Mitsui Chemicals Inc | Wasserlösliche Azofarbstoffe und diese Farbstoffe enthaltende polarisierende Filme |
ES2111731T3 (es) | 1992-03-05 | 1998-03-16 | Ciba Geigy Ag | Colorantes reactivos, procedimiento para su preparacion y su empleo. |
US5423100A (en) | 1992-08-26 | 1995-06-13 | Mitsui Toatsu Chemicals, Inc. | Water-soluble azo compounds and polarizing films using the compounds |
JP3378296B2 (ja) | 1993-05-28 | 2003-02-17 | 住友化学工業株式会社 | 染料系偏光膜 |
JPH0718192A (ja) | 1993-07-02 | 1995-01-20 | Nippon Kayaku Co Ltd | 含銅アゾ化合物及びそれを用いて染色する方法 |
US6049428A (en) | 1994-11-18 | 2000-04-11 | Optiva, Inc. | Dichroic light polarizers |
RU2110822C1 (ru) | 1994-11-18 | 1998-05-10 | Поларайзер Интернэшнл, ЛЛСи | Материал для дихроичных поляризаторов света |
JP3711601B2 (ja) | 1995-02-20 | 2005-11-02 | 住友化学株式会社 | アゾ化合物及びそれを含有する染料系偏光膜 |
JPH10279824A (ja) | 1997-03-31 | 1998-10-20 | Nippon Kayaku Co Ltd | 水溶性ジスアゾ化合物、水性インク組成物および着色体 |
DE69801818T2 (de) | 1998-08-19 | 2002-04-11 | Ilford Imaging Ch Gmbh | Metallkomplex-Disazofarbstoffe, ihre Herstellung und Verwendung |
RU2155978C2 (ru) | 1998-10-28 | 2000-09-10 | ОПТИВА, Инк. | Дихроичный поляризатор и способ его изготовления |
CA2354146C (en) | 1998-12-18 | 2010-06-29 | Nippon Kayaku Kabushiki Kaisha | Color polarizing plate with supporter for liquid crystal projector device and color liquid crystal projector device |
PT1068394E (pt) | 1999-01-26 | 2004-03-31 | Kronospan Tech Co Ltd | Processo para a impregnacao de papeis decorativos |
JP4162336B2 (ja) | 1999-08-20 | 2008-10-08 | 日本化薬株式会社 | 染料系偏光膜 |
DE60020976T2 (de) | 1999-07-14 | 2005-12-29 | Nippon Kayaku K.K. | Farbstoff-polarisator |
JP2001108828A (ja) | 1999-10-06 | 2001-04-20 | Sumitomo Chem Co Ltd | トリスアゾ化合物を含有する染料系偏光膜 |
JP4078476B2 (ja) | 1999-12-24 | 2008-04-23 | 住友化学株式会社 | アゾ化合物又はその塩及びそれらを含有する染料系偏光膜 |
TW572970B (en) | 2000-11-27 | 2004-01-21 | Sumitomo Chemical Co | Polyazo compound or salt thereof and dye-based polarization film containing the same |
JP4815721B2 (ja) | 2001-01-10 | 2011-11-16 | 住友化学株式会社 | ポリアゾ化合物又はその塩及びそれらを含有する染料系偏光膜 |
RU2207603C2 (ru) | 2001-06-04 | 2003-06-27 | Хан Ир Гвон | Оптическое устройство для получения и/или преобразования поляризованного электромагнитного излучения и оптическое устройство в виде жидкокристаллического дисплея |
JP2003035819A (ja) | 2001-07-24 | 2003-02-07 | Sumitomo Chem Co Ltd | 偏光フィルム、偏光板及びそれらの表示装置への適用 |
US20030090012A1 (en) | 2001-09-27 | 2003-05-15 | Allen Richard Charles | Methods of making polarization rotators and articles containing the polarization rotators |
US6985291B2 (en) | 2001-10-01 | 2006-01-10 | 3M Innovative Properties Company | Non-inverting transflective assembly |
JP4033443B2 (ja) | 2002-01-22 | 2008-01-16 | 日本化薬株式会社 | 染料系偏光膜及び偏光板 |
US20040218118A1 (en) | 2003-02-18 | 2004-11-04 | Sumitomo Chemical Company, Limited | Dye type polarizing film and dye type polarizer |
US7304147B2 (en) | 2003-04-16 | 2007-12-04 | Nippon Kayaku Kabushiki Kaisha | Azo compound and salt thereof |
JP2004338876A (ja) | 2003-05-15 | 2004-12-02 | Isuzu Motors Ltd | ガスケットの分離装置 |
JP5237530B2 (ja) | 2003-10-01 | 2013-07-17 | 日本化薬株式会社 | アゾ化合物、それを用いた染料水溶液、インク及びその用途 |
TWI377232B (en) * | 2004-11-12 | 2012-11-21 | Nippon Kayaku Kk | Azo compound,ink composition and colored article |
CA2586123A1 (en) | 2004-11-24 | 2006-06-01 | Nippon Kayaku Kabushiki Kaisha | Azo compounds and dye-type polarizing films or plates containing the same |
JP5422864B2 (ja) | 2004-12-27 | 2014-02-19 | 三菱化学株式会社 | トリスアゾ色素、該色素を含む異方性色素膜用組成物、異方性色素膜及び偏光素子 |
US7931702B2 (en) | 2006-06-01 | 2011-04-26 | Nippon Kayaku Kabushiki Kaisha | Azo compound and salt thereof, and dye-containing polarizing film comprising the compound or salt |
JP5225839B2 (ja) * | 2006-06-13 | 2013-07-03 | 日本化薬株式会社 | アゾ化合物及びそれらを含有する染料系偏光膜 |
TWI406907B (zh) | 2007-11-02 | 2013-09-01 | Nippon Kayaku Kk | 偶氮化合物及含有彼等之染料系偏光膜 |
US9354371B2 (en) * | 2008-05-20 | 2016-05-31 | Nippon Kayaku Kabushiki Kaisha | Azo compounds, and dye-based polarizing films and polarizing plates comprising the same |
WO2009154055A1 (ja) * | 2008-06-17 | 2009-12-23 | 日本化薬株式会社 | アゾ化合物及びその塩、並びにそれらを含有する染料系偏光膜並びに偏光板 |
-
2009
- 2009-05-19 US US12/993,643 patent/US9354371B2/en not_active Expired - Fee Related
- 2009-05-19 WO PCT/JP2009/059173 patent/WO2009142193A1/ja active Application Filing
- 2009-05-19 CN CN200980118425.XA patent/CN102037082B/zh not_active Expired - Fee Related
- 2009-05-19 CN CN201310180064.XA patent/CN103275513B/zh not_active Expired - Fee Related
- 2009-05-19 TW TW098116565A patent/TWI565761B/zh not_active IP Right Cessation
- 2009-05-19 JP JP2010513020A patent/JP5544289B2/ja active Active
- 2009-05-19 KR KR1020107025941A patent/KR101672555B1/ko active IP Right Grant
-
2011
- 2011-06-15 HK HK11106142.1A patent/HK1152066A1/xx not_active IP Right Cessation
-
2013
- 2013-10-22 JP JP2013218846A patent/JP5753886B2/ja active Active
- 2013-11-08 HK HK13112572.6A patent/HK1185373A1/xx not_active IP Right Cessation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2622748B2 (ja) | 1989-06-12 | 1997-06-18 | 日本化薬株式会社 | 水溶性アゾ染料及びこれを含有する偏光膜 |
JP2001033627A (ja) | 1999-07-26 | 2001-02-09 | Nippon Kayaku Co Ltd | 染料系偏光膜 |
JP2004051645A (ja) | 2001-06-28 | 2004-02-19 | Sumitomo Chem Co Ltd | ポリアゾ化合物又はその塩、及びそれらを含有する染料系偏光膜 |
WO2004013232A1 (ja) * | 2002-08-05 | 2004-02-12 | Nippon Kayaku Kabushiki Kaisha | トリスアゾ化合物、水性インク組成物および着色体 |
JP2004075719A (ja) | 2002-08-09 | 2004-03-11 | Nippon Kayaku Co Ltd | トリスアゾ化合物、水性インク組成物及び着色体 |
JP2004323712A (ja) * | 2003-04-25 | 2004-11-18 | Nippon Kayaku Co Ltd | ジスアゾ化合物、水性インク組成物及び着色体 |
WO2005075572A1 (ja) | 2004-02-04 | 2005-08-18 | Nippon Kayaku Kabushiki Kaisha | アゾ化合物、それを含有する偏光膜及び偏光板 |
WO2007148757A1 (ja) | 2006-06-22 | 2007-12-27 | Nippon Kayaku Kabushiki Kaisha | アゾ化合物及びそれらを含有する染料系偏光膜 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014167089A (ja) * | 2008-05-20 | 2014-09-11 | Nippon Kayaku Co Ltd | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 |
US20130302538A1 (en) * | 2011-02-07 | 2013-11-14 | Polatechno Co., Ltd. | Azo Compound, Dye-Based Polarizing Film And Polarizing Plate |
US20130314786A1 (en) * | 2011-02-07 | 2013-11-28 | Polatechno Co., Ltd. | Azo Compound And Salt Thereof, And Dye-Based Polarizing Film And Polarizing Plate Containing The Same |
KR20140019310A (ko) * | 2011-02-07 | 2014-02-14 | 니폰 가야꾸 가부시끼가이샤 | 아조 화합물 및 그 염, 및 그것들을 함유하는 염료계 편광막 및 편광판 |
KR20140019309A (ko) * | 2011-02-07 | 2014-02-14 | 니폰 가야꾸 가부시끼가이샤 | 아조 화합물, 염료계 편광막 및 편광판 |
US9244194B2 (en) * | 2011-02-07 | 2016-01-26 | Nippon Kayaku Kabushiki Kaisha | Azo compound and salt thereof, and dye-based polarizing film and polarizing plate containing the same |
US9244198B2 (en) * | 2011-02-07 | 2016-01-26 | Nippon Kayaku Kabushiki Kaisha | Azo compound, dye-based polarizing film and polarizing plate |
US9341747B2 (en) | 2011-02-07 | 2016-05-17 | Nippon Kayaku Kabushiki Kaisha | Azo compound and salt thereof, and dye-based polarizing film and polarizing plate containing the same |
US9341746B2 (en) | 2011-02-07 | 2016-05-17 | Nippon Kayaku Kabushiki Kaisha | Azo compound, dye-based polarizing film and polarizing plate |
KR101920240B1 (ko) * | 2011-02-07 | 2018-11-20 | 니폰 가야꾸 가부시끼가이샤 | 아조 화합물 및 그 염, 및 그것들을 함유하는 염료계 편광막 및 편광판 |
KR101932467B1 (ko) * | 2011-02-07 | 2018-12-26 | 니폰 가야꾸 가부시끼가이샤 | 아조 화합물, 염료계 편광막 및 편광판 |
JPWO2013035751A1 (ja) * | 2011-09-09 | 2015-03-23 | 日本化薬株式会社 | 偏光素子および偏光板 |
Also Published As
Publication number | Publication date |
---|---|
HK1152066A1 (en) | 2012-02-17 |
JP5544289B2 (ja) | 2014-07-09 |
CN102037082A (zh) | 2011-04-27 |
HK1185373A1 (en) | 2014-02-14 |
JP2014167089A (ja) | 2014-09-11 |
TWI565761B (zh) | 2017-01-11 |
CN102037082B (zh) | 2014-05-28 |
CN103275513B (zh) | 2015-08-19 |
KR20110015562A (ko) | 2011-02-16 |
US9354371B2 (en) | 2016-05-31 |
JPWO2009142193A1 (ja) | 2011-09-29 |
US20110075076A1 (en) | 2011-03-31 |
TW201005042A (en) | 2010-02-01 |
JP5753886B2 (ja) | 2015-07-22 |
CN103275513A (zh) | 2013-09-04 |
KR101672555B1 (ko) | 2016-11-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5753886B2 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 | |
JP5366947B2 (ja) | アゾ化合物及びその塩、並びにそれらを含有する染料系偏光膜並びに偏光板 | |
JP5899122B2 (ja) | アゾ化合物、染料系偏光膜及び偏光板 | |
JP5225839B2 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜 | |
JP5576457B2 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜 | |
JP5899123B2 (ja) | アゾ化合物及びその塩、並びにそれらを含有する染料系偏光膜並びに偏光板 | |
JP4825135B2 (ja) | アゾ化合物およびそれらを含有する染料系偏光膜または偏光板 | |
JP5366819B2 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜 | |
JP6617098B2 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 | |
WO2016186196A1 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 | |
KR102581552B1 (ko) | 아조 화합물 및 그것들을 함유하는 염료계 편광막 그리고 편광판 | |
WO2016186194A1 (ja) | アゾ化合物及びそれらを含有する染料系偏光膜並びに偏光板 | |
WO2018181470A1 (ja) | アゾ化合物又はその塩、並びにこれを含有する染料系偏光膜、染料系偏光板、及び液晶表示装置 | |
CN114945636A (zh) | 偶氮化合物或其盐,以及含有该化合物或其盐的染料系偏光膜、染料系偏光板及显示装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980118425.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09750555 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010513020 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009750555 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20107025941 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12993643 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |