Abstract: The purpose of the present invention is to provide: a high-performance polarizing plate which functions for light in an infrared wavelength range; and a liquid-crystal display device or the like comprising the same. Provided is a polarizing plate for an infrared range, which is a stretched film containing a dye exhibiting absorption in an infrared range, the film exhibiting dichroism.

Abstract: The purpose of the present invention is to provide: a high-performance polarizing plate which functions for light in an infrared wavelength range; and a liquid-crystal display device or the like comprising the same. Provided is a polarizing plate for an infrared range, which is a stretched film containing a dye exhibiting absorption in an infrared range, the film exhibiting dichroism.

Abstract: The purpose of the present invention is to provide: a high performance dye-based polarizing film and dye-based polarizing plate, in particular a neutral gray high performance dye-based film and dye-based polarizing plate, having excellent polarizing performance and moisture resistance, heat resistance and light resistance; and an azo compound or a salt thereof able to produce same. The present invention provides an azo compound represented by formula (1) or a salt thereof.

Abstract: The present invention relates to an azo compound that is useful as a dichroic pigment used in a polarizing plate having excellent polarizing performance and durability and having little color leakage in a visible light region, and used in a neutral gray polarizing plate for vehicle mounting that uses the aforementioned polarizing plate. More specifically, the invention relates to an azo compound that is represented by formula (1) [In the formula, R1-R4 each independently represent a hydrogen atom, a C1-5 alkyl group, a C1-5 alkoxy group, a sulfo group, or a C1-5 alkoxy group having a sulfo group, X represents an amino group having a substituent, a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent, m represents 3 or 4, n represents 1 or 2, and p represents 1, 2, or 3.], or to a salt of said compound.

Abstract: A polarizer contains, in a base thereof, at least one of an azo compound represented by Formula (1) or a salt thereof (as compound A), and at least one of an azo compound represented by Formula (2-I), (2-II), (3), (4-I), (4-II), (5-I) or (5-II), or a salt thereof (as compound B).

Abstract: A polarizer contains, in a base thereof, at least one of an azo compound represented by Formula (1) or a salt thereof (as compound A), and at least one of an azo compound represented by Formula (2-I), (2-II), (3), (4-I), (4-II), (5-I) or (5-II), or a salt thereof (as compound B).

Abstract: The present invention relates to an azo compound that is useful as a dichroic pigment used in a polarizing plate having excellent polarizing performance and durability and having little color leakage in a visible light region, and used in a neutral gray polarizing plate for vehicle mounting that uses the aforementioned polarizing plate. More specifically, the invention relates to an azo compound that is represented by formula (1) [In the formula, R1-R4 each independently represent a hydrogen atom, a C1-5 alkyl group, a C1-5 alkoxy group, a sulfo group, or a C1-5 alkoxy group having a sulfo group, X represents an amino group having a substituent, a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent, m represents 3 or 4, n represents 1 or 2, and p represents 1, 2, or 3.], or to a salt of said compound.

Abstract: Azo compounds represented by formula (1) or (2) (In the formulas, A represents a phenyl group or naphthyl group that has at least 1 substituent. R1-R4 represent a hydrogen atom, lower alkyl group or lower alkoxy group, with at least one of R1-R4 being a lower alkoxy group that has a sulfone group. X represents an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group) and salts thereof.

Abstract: The present invention relates to an azo compound represented by the following formula (1), [wherein, A represents a phenyl group which may have a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents an amino group which may have a substituent, 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] or/and a salt thereof and to a polarizing film and a polarizing plate which contain it.

Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. By using the azo compound or a salt thereof of the present invention, a neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability.

Abstract: The present invention relates to an azo compound represented by the following formula (1), [wherein, A represents a phenyl group which may have a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents an amino group which may have a substituent, 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] or/and a salt thereof and to a polarizing film and a polarizing plate which contain it.

Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. By using the azo compound or a salt thereof of the present invention, a neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability and having less color leakage in a visible light region can be provided.

Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamine group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. A neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability and having less color leakage in a visible light region can be provided.

Abstract: The present invention relates to an azo compound represented by the following formula (1), [wherein, A represents a phenyl group which may have a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents an amino group which may have a substituent, 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] or/and a salt thereof and to a polarizing film and a polarizing plate which contain it.

Abstract: The present invention relates to an azo compound represented by the following formula (1) [wherein, A represents a naphthyl group having a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent] and a salt thereof. By using the azo compound or a salt thereof of the present invention, a neutral color polarizing plate and a color polarizing plate for a liquid crystal projector being excellent in polarization performance and durability and having less color leakage in a visible light region can be provided.

Abstract: The present invention relates to an azo compound represented by the following formula (1), [wherein, A represents a phenyl group which may have a substituent, R1 to R6 each independently represent a hydrogen atom, an alkyl group having a carbon atom number of 1 to 5, an alkoxy group having a carbon atom number of 1 to 5, a sulfo group, or an alkoxy group having a sulfo group and a carbon atom number of 1 to 5, and X represents an amino group which may have a substituent, 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] or/and a salt thereof and to a polarizing film and a polarizing plate which contain it.

Abstract: The present invention relates to a heat-ray-shielding sheet that includes, on a support, a heat-ray-shielding layer including heat-shielding microparticles and a resin binder filling a void part. The microparticles are made of tin-doped indium oxide (ITO) or the like and have an average particle diameter of equal to or less than 100 nm, the reflectance in the heat-ray-shielding layer at a wavelength of at least 2,000 nm is at least 15%, and the surface resistivity in the heat-ray-shielding layer is equal to or more than 106?/?. Increasing the surface resistivity imparts a radio-wave-transmitting property, and causing longer-wavelength near-infrared light to be reflected boosts heat-ray-shielding efficiency while preventing thermal cracking and the like of a glass substrate. Additionally compounding the heat-ray-shielding layer with a near-infrared-absorbing dye, or disposing a reflecting layer in addition to the heat-ray-shielding layer allows the heat-ray shielding effect to be further improved.

Abstract: Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof. (In the formula, R1 and R2 independently represent a hydrogen atom, a sulfonic acid group, a lower alkyl group or a lower alkoxyl group; R3-R6 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; R7 represents a lower alkyl group or a lower alkoxyl group; and n represents 0 or 1.

Abstract: To provide a polarizing element having a good polarizing property, and having a property of no discoloration by a treatment solution or pH of an adhesive. Provided is a polarizing element that comprises a film of a polyvinyl alcohol resin or a derivative thereof containing a disazo pigment represented by Formula (1), and having been stretched by a factor of at least three from the initial length, in which the polarizing element has the lowest transmissivity at 565 to 700 nm in the transmissivity when two pieces of polarizing plates having the polarizing element are superimposed such that the absorption-axis directions orthogonally intersect.

Abstract: To develop a polarizing element having a good, polarizing property, and also having a high durability without use of a raw material belonging to a specified, chemical substance such as dianisidine. Provided is a polarizing element that comprises a film of a polyvinyl alcohol resin or a derivative thereof containing dichromatic pigments, and having been stretched, in which at least one of the dichromatic pigments is an azo compound represented by Formula (1) or a salt thereof.