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US 2008/0173844 A1Published application
Phenylcyclohexanes and a liquid-crystalline medium
OwnerAndreas Wachtler, Reinhard Hittich +5inventors
InventorsAndreas Wachtler, Reinhard Hittich, Eike Poetsch, Herbert Plach, David Coates, Bernhard Reiger, Joachim Krause
Life of this patent
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Abstract
Novel phenylcyclohexanes of the formula I in which n is 0 to 7, Q1 and Q2 are 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, —OCF3 or —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.
Claims8
Phenylcyclohexanes of the formula I
- in which n is 0 to 7, Q1 and Q2 are H, or one of Q1 and Q2 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, OCF3, or 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.
Dependencies are inferred from the claim text.