Abstract: A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).

Abstract: A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

Abstract: Provided is an optical laminate which has high absorption selectivity to short-wavelength visible light having wavelengths around 400 nm and hence high light fastness and can impart better display characteristics when used for a display device. The optical laminate comprises at least one polarizing plate and at least one pressure-sensitive adhesive layer and satisfying the following formulae (1) and (2): A(400)?0.5??(1) A(420)/A(400)?0.3??(2) where A(400) represents the absorbance of the optical laminate at a wavelength of 400 nm in the transmission direction of the polarizing plate and A(420) represents the absorbance of the optical laminate at a wavelength of 420 nm in the transmission direction of the polarizing plate.

Abstract: A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.

Abstract: A liquid crystal composition containing a polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain and a polymer (B) of the polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain, which inhibits occurrence of an orientation defect of a liquid crystal compound and exhibits excellent storage stability when dissolved in a solvent is provided.

Abstract: The object of the present invention is to provide a light absorptive compound which is capable of selectively absorbing light around a wavelength of 400 nm, and is excellent in solubility in various solvents and/or affinity with hydrophobic substances. Also, the object of the present invention is to provide an optical film containing such a light absorptive compound, and a cured layer.

Abstract: A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

Abstract: A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

Abstract: A liquid crystal composition which prevents production of an alignment defect of a liquid crystal compound and also has excellent storage stability during dissolution in a solvent is provided. The liquid crystal composition is suitable for constituting a retardation film capable of favorable circular polarization conversion. The liquid crystal composition includes a polymerizable liquid crystal compound having 3 or more ring structures in the main chain, and aluminum. A content of the aluminum is 1 ppm or more and 170 ppm or less relative to the polymerizable liquid crystal compound.

Abstract: A liquid crystal composition is provided containing a polymerizable liquid crystal compound, the composition having high preservation stability when dissolved in a solvent and also having the ability to restrain the development of orientation defects of the liquid crystal compound. A method of producing such a liquid crystal composition is also provided with ease. The liquid crystal composition includes a first polymerizable liquid crystal compound having five or more ring structures on its principal chain and represented by the following formula (A) and a second polymerizable liquid crystal compound having five or more ring structures and represented by the following formula (B).

Abstract: A liquid crystal composition containing a polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain and a polymer (B) of the polymerizable liquid crystal compound (A) having 5 or more ring structures in its main chain, which inhibits occurrence of an orientation defect of a liquid crystal compound and exhibits excellent storage stability when dissolved in a solvent is provided.

Abstract: The object of the present invention is to provide a light absorptive compound which is capable of selectively absorbing light around a wavelength of 400 nm, and is excellent in solubility in various solvents and/or affinity with hydrophobic substances. Also, the object of the present invention is to provide an optical film containing such a light absorptive compound, and a cured layer.

Abstract: Provided is an optical laminate which has high absorption selectivity to short-wavelength visible light having wavelengths around 400 nm and hence high light fastness and can impart better display characteristics when used for a display device. The optical laminate comprises at least one polarizing plate and at least one pressure-sensitive adhesive layer and satisfying the following formulae (1) and (2): A(400)?0.5??(1) A(420)/A(400)?0.3??(2) where A(400) represents the absorbance of the optical laminate at a wavelength of 400 nm in the transmission direction of the polarizing plate and A(420) represents the absorbance of the optical laminate at a wavelength of 420 nm in the transmission direction of the polarizing plate.