Liquid crystal mixtures

Details Liquid crystal mixtures Liquid crystal mixtures

1977-02-18

1979-12-25

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 350350, C09K 334, G02F 113

Patent

active

041804759

ABSTRACT:
Liquid crystal mixtures having positive anisotropy of the dielectric constants which comprise a nematogenic mixture with a clearing point above 60.degree. C. which is doped with an organic solvent or solvent mixture with a specific resistance of at least 10.sup.7 Ohm.cm. as well as a dipole moment along the longitudinal axis of the molecule of less than 3.5 Debye, or with a compound of the formula ##STR1## wherein R.sub.14 and R.sub.15 are straight-chain alkyl containing a total of not more than 14 carbon atoms or R.sub.14 is straight-chain alkyl and R.sub.15 is straight-chain alkoxy containing a total of not more than 8 carbon atoms,
or a compound of the formula ##STR2## wherein R.sub.16 and R.sub.17 are straight-chain alkyl containing a total of not more than 6 carbon atoms,
or a compound of the formula ##STR3## wherein R.sub.16 and R.sub.17 are straight-chain alkyl containing a total of not more than 6 carbon atoms,
or mixtures thereof, are described.

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