Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1993-06-07
1995-08-29
Wu, Shean
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
25229901, 25229962, 25229963, 25229967, 546257, 546303, 546345, 359103, C09K 1934, C07D21361, G02F 113
Patent
active
054457637
ABSTRACT:
A 3-fluoropyridine of the formula (I) ##STR1## in which the symbols have the following meanings: R.sup.1 and R.sup.2, independently of one another, are, for example, H or straight-chain or branched alkyl, A.sup.1, A.sup.2, A.sup.3 and A.sup.4 are identical or different and are, for example, 1,4-phenylene, pyrazine-2,5-diyl or trans-1,4-cyclohexylene, M.sup.1, M.sup.2, M.sup.3 and M.sup.4 are identical or different and are, for example, --O-- or --CO--O--, R.sup.3, R.sup.4, R.sup.6 and R.sup.7, independently of one another are, for example, H or straight-chain or branched alkyl, M.sup.5 is for example, --O--CO-- or a single bond, k, l, m, n, o, p, q and r are zero or one, with the proviso that the sum k+m+p+r is less than 4 and greater than zero, can advantageously be employed as a component in ferroelectric liquid-crystal mixtures.
REFERENCES:
patent: 4684734 (1987-08-01), Kaieda et al.
patent: 5204471 (1993-04-01), Reiffenrath et al.
patent: 5205962 (1993-04-01), Coates et al.
Kaltbeitzel Anke
Schlosser Hubert
Hoechst Aktiengesellschaft
Wu Shean
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