Enhanced intrinsic polarizer
OwnerJohn J. Cael, Jason W. Balich +3inventors
InventorsJohn J. Cael, Jason W. Balich, Pradnya V. Nagarkar, Kim M. Vogel, Hassan Sahouani
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Abstract
A method for making an enhanced intrinsic polarizer from a polymeric sheet having an original length and comprising a hydroxylated linear high polymer includes stretching the polymeric sheet to a stretched length of from greater than 5.0 times to about 7.0 times the original length, introducing a suitable dehydration catalyst to the polymeric sheet, and heating the polymeric sheet and the catalyst to effect partial dehydration of the polymeric sheet wherein light absorbing, vinylene block segments are formed.
Claims40
A method for making a polarizer from a polymeric sheet having an original length and comprising a hydroxylated linear high polymer, the method comprising:
- stretching the polymeric sheet to a stretched length of from greater than 5.0 times to about 7.0 times the original length;
- introducing a suitable dehydration catalyst to the polymeric sheet;
- and
- heating the polymeric sheet and the catalyst to effect partial dehydration of the polymeric sheet wherein light absorbing, vinylene block segments are formed.
A method for making a polarizer from a polymeric sheet having an original length and comprising a hydroxylated linear high polymer, the method comprising:
- stretching the polymeric sheet to a stretched length of from about 3.5 times to about 7.0 times the original length;
- introducing a suitable dehydration catalyst to the polymeric sheet;
- heating the polymeric sheet and the catalyst to effect partial dehydration of the polymeric sheet wherein light absorbing, vinylene block segments are formed;
- subjecting the polymeric sheet to a boration treatment at a temperature of at least about 80° C;
- and
- unidirectionally extending the polymeric sheet from 0% to about 70% of the stretched length.
Dependencies are inferred from the claim text.