POLARIZING ELEMENT, AND POLARIZER

摘要

[Problem] This polarizing element and a polarizer therefor exhibit high durability, especially against high intensity light. [Solution] A polarizing element formed from a polyvinyl alcohol resin film to which a dichroic die is adsorbed and which is stretched, the polarizing element being characterized in that the pH of an aqueous solution obtained by dissolving 0.65 parts by weight of the polarizing element into 100 parts by weight of hot water (90 to 100°C) is between 5.9 and 9.0 when the aqueous solution was cooled to 25°C.