PROCESS FOR MAKING AN INTRINSIC POLARIZER

摘要

A method for making a polarizer from a polymeric film having an original length and comprising a hydroxylated linear high polymer includes stretching the polymeric film to a stretched length of from about 3.5 times to about 7.0 times the original length, immersing the polymeric film in an aqueous dehydration catalyst, and heating the polymeric film and the catalyst to effect partial dehydration of the polymeric film, wherein light absorbing, vinylene block segments are formed.