High stability polarizer
First Claim
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1. A polarizing element which comprises a sheet of a stained polyvinyl alcohol film which is adhered on one side thereof to a flexible transparent fluorine containing sheet, said fluorine containing sheet consisting essentially of a material selected from the group consisting of ethylene-chlorotrifluoroethylene, polytetrafluoroethylene, polyvinylidene fluoride, ethylene tetrafluoroethylene, perfluoro alkoxy materials, fluorinated ethylene propylene, and polychlorotrifluoroethylene.
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Abstract
The invention relates to a highly hydrolytically stable polarizer element having a moisture barrier flurocarbon film as its supporting substrate.
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6 Claims
- 1. A polarizing element which comprises a sheet of a stained polyvinyl alcohol film which is adhered on one side thereof to a flexible transparent fluorine containing sheet, said fluorine containing sheet consisting essentially of a material selected from the group consisting of ethylene-chlorotrifluoroethylene, polytetrafluoroethylene, polyvinylidene fluoride, ethylene tetrafluoroethylene, perfluoro alkoxy materials, fluorinated ethylene propylene, and polychlorotrifluoroethylene.
Specification