Compositions – Light transmission modifying compositions – Producing polarized light
Reexamination Certificate
2005-09-27
2005-09-27
Gulakowski, Randy (Department: 1712)
Compositions
Light transmission modifying compositions
Producing polarized light
C359S437000, C359S485050
Reexamination Certificate
active
06949207
ABSTRACT:
A process for preparing a polarizer is described whereby a pre-polarizing article comprising an oriented, vinylalcohol polymer film layer, and an acid donor layer comprising a thermal acid generator, is exposed to radiant energy at a temperature sufficient to effect a partial dehydration of the vinylalcohol polymer to a vinylalcohol/poly(acetylene) copolymer.
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Fansler Duane D.
Fitzsimons, Jr. Robert T.
Gaddam Babu N.
Jones Todd D.
Lewandowski Kevin M.
3M Innovative Properties Company
Gulakowski Randy
Kokko Kent S.
Kugel Timothy J.
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