Polarizing film and process for the production of the same

Details Polarizing film and process for the production of the same Polarizing film and process for the production of the same

1990-11-16

1991-12-10

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524438, 264 13, 2642884, 2642896, C08L 2904, B29D 1100

Patent

active

050719068

ABSTRACT:
A polarizing film comprising a uniaxially stretched film containing a polyvinyl alcohol having a degree of polymerization of at least about 2,500, and at least one polarizing agent selected from iodine and a dichroic dye, as well as a process for the production of the same. This polarizing film is superior in heat resistance and moist heat resistance to conventional films and has excellent optical properties, such as a high polarizing coefficient and transmittance.

REFERENCES:
patent: 2173304 (1939-09-01), Land et al.
patent: 3265777 (1966-08-01), Marks
patent: 4396642 (1983-08-01), Bolt et al.
patent: 4427741 (1984-01-01), Aizawa et al.
patent: 4802745 (1989-02-01), Okada et al.
The Merck Index, 9th Edition, p. 946.

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