Polarizing film

Details Polarizing film Polarizing film

1991-07-03

1994-02-15

Tucker, Philip

Compositions

Light transmission modifying compositions

Producing polarized light

359 63, 359 96, 359490, 524 89, F21V 914, G02B 530

Patent

active

052864189

ABSTRACT:
Disclosed is a polarizing film comprising a hydrophobic polymer containing a dichroic organic colorant in an oriented state which is characterized in that the dichroic organic colorant is substantially insoluble in water, organic solvents and liquid crystals and the dichroic ratio of the colorant is not less than 7 when it is measured with the film obtained by blending the colorant intimately with polyethylene terephthalate, melting the resulting blend and forming it into a film. This polarizing film has exceptionally excellent moisture resistance and thermal resistance.

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