Abstract: A retardation element containing a liquid crystalline compound, and at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2) and a compound represented by the following formula (3). In the formula (1), n represents an integer of 3 to 10 and R2 represents a —CH2—CH2— group, a —CH2—CH(CH3)— group or a —CH2—CH2—CH2— group. In the formula (2), R3 represents a —(CH2)p— group or a phenylene group and p represents an integer of 4 to 8. In the formula (3), R4 represents a substituted phenylene group. In the formulas (1) to (3), R1-1, R1-2 and R1-3 each represent an alkyl group having a branched structure having 5 or more carbon atoms and R1-1, R1-2 and R1-3 may be the same or different.

Abstract: A laminate for a laminated glass, comprising an interlayer film for a laminated glass laminated with a retardation element interposed between an adhesive layer A and an adhesive layer B, wherein the retardation element contains a liquid-crystal compound and at least one compound selected from the group consisting of a compound represented by the following formula (1), a compound represented by the following formula (2), and a compound represented by the following formula (3). In formula (1), n represents an integer from 3 to 10 and R2 represents a —CH2—CH2— group, a —CH2—CH(CH3)— group, or a —CH2—CH2—CH2— group. In formula (2), R3 represents a —(CH2)p— group or a phenylene group and p represents an integer from 4 to 8. In formula (3), R4 represents a substituted phenylene group. R1-1, R1-2, and R1-3 in formulas (1) to (3) are the same or different, each representing an alkyl group that has a branched structure and that contains at least 5 carbon atoms.

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: [Object] A polarizing element and polarizing plate having improved optical properties and durability.

Abstract: [Object] A polarizing element and polarizing plate having improved optical properties and durability. [Solution] A polarizing element characterized in comprising a polyvinyl alcohol resin film adsorbing at least one dichromatic pigment that is a compound represented by formula (I) or a salt thereof as a free acid, and being stretched, wherein the polyvinyl alcohol resin has a degree of polymerization of 5,000 to 10,000: (wherein A represents a phenyl group or a naphthyl group having a substituent; R1-R6 each independently represent a hydrogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group, a sulfo group, or a lower alkoxy group having a sulfo group; X represents an amino group optionally having a substituent, a benzoylamino group optionally having a substituent, a phenylamino group optionally having a substituent, a phenylazo group optionally having a substituent, or a naphthotriazole group optionally having a substituent; and m represents 0 or 1).

Abstract: [Object]A polarizing element and polarizing plate having improved optical properties and durability. [Solution]A polarizing element comprising a film containing a compound represented in the following formula (I) or a salt thereof and a polyvinyl alcohol-based resin having a degree of polymerization from 5,000 to 10,000 (wherein R1 to R4 each individually represent a hydrogen atom, a lower alkyl group, or a lower alkoxyl group; and n represents 1-3).

Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.

Abstract: A light diffusion cell for laser light where in a transparent cell in which a liquid can be sealed, a fine particle dispersion in which fine particles having an average particle size of 100 nm or more and 1.5 ?m or less are colloidally dispersed in a liquid medium transmitting light, a same light diffusion cell including a reflection mechanism recursively using reflection light of incident light, a laser light source device including the light diffusion cell and a semiconductor laser light source and an image display device including the light diffusion cell or the laser light source device, and the light diffusion cell significantly reduces or removes speckle noise of semiconductor laser light. In addition, the light diffusion cell has an easy constitution, occupies a smaller volume and can be easily incorporated in any type of image display device using laser light.

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.

Abstract: To develop a polarizing element having a good polarizing property that is a pigment having an excellent blue dye 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 at a stretch ratio of at least three times, in which at least one of the dichromatic pigments is an azo compound represented by Formula (1) or a salt thereof, and the content of an azo compound represented by Formula (2) or a salt thereof is within 10% with respect to the total amount of the dichromatic pigments.

Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.

Abstract: Disclosed is an azo compound represented by the general formula (1) or a salt thereof: wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxy group; and n represents 1 or 2. Also disclosed are a dye-containing polarizing film and a dye-containing polarizing plate, each of which comprises a polarizing film base material and the azo compound contained in the base material.

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. 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: A laminate for a laminated glass which is used as a head-up display (HUD) and is not deteriorated even if exposed to light, and with which a laminated glass having excellent impact resistance can be prepared, wherein an interlayer film for a laminated glass and a retardation element sandwiched between adhesive layers are laminated, the interlayer film for a laminated glass contains a thermoplastic resin and an ultraviolet absorber, the interlayer film for a laminated glass contains, as the ultraviolet absorber, a benzotriazole compound or a benzophenone compound, and at least one compound selected from the group consisting of a malonic ester compound, an oxanilide compound and a triazine compound.

Abstract: Azo compounds represented by formula (1) (In the formula, R1 represents a lower alkoxy group with a sulfone group. R2-R5 each independently represents a hydrogen atom, lower alkyl group or lower alkoxy group. X is an optionally substituted amino group, optionally substituted benzoylamino group, optionally substituted phenylamino group, optionally substituted phenyl azo group or optionally substituted naphthotriazole group. m represents 1 or 2 and n represents 0 or 1.) and salts thereof.

Abstract: A laminate for a laminated glass which is used as a head-up display (HUD) and is not deteriorated even if exposed to light, and with which a laminated glass having excellent impact resistance can be prepared, wherein an interlayer film for a laminated glass and a retardation element sandwiched between adhesive layers are laminated, the interlayer film for a laminated glass contains a thermoplastic resin and an ultraviolet absorber, the interlayer film for a laminated glass contains, as the ultraviolet absorber, a benzotriazole compound or a benzophenone compound, and at least one compound selected from the group consisting of a malonic ester compound, an oxanilide compound and a triazine compound.

Abstract: Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof. (In the formulae, A represents a substituted phenyl group or a naphthyl group having 1-3 sulfonic acid groups; X represents —N?N— or —NHCO—; R1-R4 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; m represents a number of 1-3; and n represents 0 or 1).

Abstract: Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof. (In the formulae, A represents a substituted phenyl group or a naphthyl group having 1-3 sulfonic acid groups; X represents —N?N— or —NHCO—; R1-R4 independently represent a hydrogen atom, a lower alkyl group or a lower alkoxyl group; m represents a number of 1-3; and n represents 0 or 1.