Compositions – Liquid crystal compositions
Patent
1998-01-16
2000-03-28
Kelly, C. H.
Compositions
Liquid crystal compositions
2522996, 25229967, 25229966, C09K 1952, C09K 1906, C09K 1920, C09K 1912
Patent
active
060427450
ABSTRACT:
The invention relates to an electroptical system which, between 2 electrode layers, contains a PDLC film comprising a liquid crystal mixture forming micro-droplets in an optically isotropic, transparent polymer matrix. The liquid crystal mixture comprises one or more compounds of the formula I ##STR1## wherein Z.sup.1, Z.sup.2, ##STR2## X.sup.1, X.sup.2, Q, Y, n and R are as defined herein. The liquid crystal mixture additionally contains one or more reactive liquid crystalline compounds in order to obtain improved switching times especially at low temperatures.
REFERENCES:
patent: 5622648 (1997-04-01), Parri et al.
Coates David
Goulding Mark John
Greenfield Simon
Nolan Patrick
Parri Owain Llyr
Kelly C. H.
Merck Patent GmbH
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