Phenylcyclohexanes and a liquid-crystalline medium

Details Phenylcyclohexanes and a liquid-crystalline medium Phenylcyclohexanes and a liquid-crystalline medium

2007-07-31

2007-07-31

Wu, Shean C. (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299630, C252S299660, C570S129000

Reexamination Certificate

active

11038170

ABSTRACT:
Novel phenylcyclohexanes of the formula Iin which n is 0 to 7, Q1and Q2are H, or one of these radicals is alternatively CH3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, —CF3, —CN, —OCF3or —OCHF2, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q1=Q2=H and simultaneously X=CN, Y and/or Z are F.

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