| 摘要 |
Provided is a polarizer durable against high-temperature and high-humidity conditions, small in changes in the single plate transmittance, and a liquid crystal display device. A polarizer including a polyvinyl alcohol-based resin, a dichroic colorant, and a compound, etc. represented by the formula (1) below, the content of the compound represented by the formula (1) being 0.01 to 30 parts by mass relative to 100 parts by mass of the polyvinyl alcohol-based resin. In the formula (1) , each of R1 and R3 independently represents a hydrogen atom, C1-20 straight-chain alkyl group, C3-20 branched alkyl group, C3-20 cycloalkyl group, C2-20 alkenyl group or C6-20 aromatic group, and R5 represents a substituent.; |
| 主权项 |
1. A polarizer comprising a polyvinyl alcohol-based resin, a dichroic colorant, and at least one species selected from the group consisting of a compound represented by formula (1), a compound represented by formula (1-2), a hydrate of the compounds, a solvate of the compounds, and a salt of the compounds, the total content of the compound represented by the formula (1), the compound represented by the formula (1-2), the hydrate of the compounds, the solvate of the compounds, and the salt of the compounds being 0.01 to 30 parts by mass relative to 100 parts by mass of the polyvinyl alcohol-based resin; in the formula (1), each of R1 and R3 independently represents a hydrogen atom, C1-20 straight-chain alkyl group, C3-20 branched alkyl group, C3-20 cycloalkyl group, C2-20 alkenyl group or C6-20 aromatic group, and R5 represents an alkyl group or an aralkyl group; in the formula (1-2), each of R1 and R3 independently represents a hydrogen atom, C1-20 straight-chain alkyl group, C3-20 branched alkyl group, C3-20 cycloalkyl group, C2-20 alkenyl group, or, C6-20 aromatic group, and R5 represents an alkyl group or an aralkyl group; where at least one of R1, R3 and R5 is a water-soluble group, or contains a water-soluble group, or both of R1 and R3 represent a hydrogen atom. |
