Compositions – Liquid crystal compositions – Containing pleochroic dye
Patent
1995-12-14
1998-04-14
Tucker, Philip
Compositions
Liquid crystal compositions
Containing pleochroic dye
25229901, 252585, C09K 1900, F21V 914
Patent
active
057388032
ABSTRACT:
This invention provides novel liquid crystalline polymers which, when mixed with a suitable dye and extruded, yields polarizer films with superior polarizing efficiency, transmittance, dichroic ratio, and thermal and humidity stability. The invention further provides a process to prepare such polymers and polarizer films therefrom.
REFERENCES:
patent: 4840640 (1989-06-01), Miura et al.
patent: 5059356 (1991-10-01), Nakamura et al.
Patent Abstracts of Japan, vol. 012, No. 477 (P-800), 14 Dec. 1988 & JP 63 195602 A (Mitsubishi Kasei Corp), 12 Aug. 1988.
Patent Abstracts of Japan, vol. 010, No. 080 (P-441), 29 Mar. 1986 & JP 60 218602 A (Mitsui Toatsu Kagaku KK), 1 Nov. 1985.
Database WPI, Section Ch, Week 8741, Derwent Publications Ltd., London, GB; Class A23, AN 87-289507, XP002032175 & JP 62 204 202 A (Mitsubishi Chem Ind Ltd), 8 Sep. 1987.
Charbonneau Larry F.
Marr Brian B.
Shen Sunny S.
Shepherd James P.
Hoechst Celanese Corp
Kalyanaraman P. S.
Tucker Philip
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