POLYVINYLALKOHOLFOLIE UND POLARISATIONSFILM

摘要

A polyvinyl alcohol polymer film in which the amount of a polyvinyl alcohol polymer eluted when a 10 cm square polyvinyl alcohol polymer film is left in 1 liter of water of 50 °C for 4 hours is from 1 to 100 ppm. A polyvinyl alcohol film in which the content of an alkali metal compound is 0.5% by weight or less based on the polyvinyl alcohol. Further, a polarization film produced by using the same.