Process for preparing a K-type polarizer
Assignee3M Innovative Properties Company
InventorsDuane D. Fansler, Todd D. Jones, Babu N. Gaddam, Robert T. Fitzsimons, Steven M. Heilmann, John J. Cael
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Abstract
A process for preparing a polarizer is described whereby an article comprising an oriented, vinylalcohol polymer film layer, and an acid donor layer comprising a photoacid 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.
Claims69
A process for preparing a polarizer comprising the step of:
- exposing a pre-polarizing article to radiant energy,
- said pre-polarizing article comprising:
- a uniaxially oriented vinylalcohol polymer film layer, and
- an acid donor layer comprising a photoacid generator.
The process of 1 wherein said acid donor layer comprises a mixture of said photoacid generator and an amorphous polymer.
A process for preparing a polarizer comprising the steps of:
- a. providing an article comprising an oriented, vinylalcohol polymer film;
- b. coating a surface of said oriented, vinylalcohol polymer film with a polymer composition comprising a photoacid generator;
- c. laminating said donor layer with a barrier layer;
- and
- d. exposing said vinylalcohol polymer film to radiant energy.
A K-type polarizer comprising at least one layer of an oriented poly(vinyl alcohol)/poly(acetylene) copolymer disposed in a pre-selected pattern.
A K-type polarizer comprising at least one layer of an oriented poly(vinyl alcohol)/poly(acetylene) copolymer and an acid donor layer containing residue from a photoacid generator.
A pre-polarizing article comprising:
- an oriented vinylalcohol polymer film layer, and
- an acid donor layer comprising a photoacid generator.
Dependencies are inferred from the claim text.