Ferroelectric liquid crystal compounds and compositions

Details Ferroelectric liquid crystal compounds and compositions Ferroelectric liquid crystal compounds and compositions

1989-06-01

1993-01-12

Stoll, Robert L.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229966, 25229967, 544318, 544335, 546 1, 546290, 546301, C09K 1934, C07D23902, C07D21300, C07D21172

Patent

active

051787938

ABSTRACT:
Chiral, nonracemic compounds of the general formula: ##STR1## in which the chiral tail group containing three asymmetric carbons (as indicated by *) is incorporated into a suitable FLC core moiety R--Ar.sub.2 are provided. The Ar.sub.2 core can include phenylbenzoate, biphenyl, phenylpyridine or phenylpyrimidine. R is an alkyl or alkoxy group having three to fifteen carbon atoms and R' is an alkyl group having from three to twelve carbon atoms. The compounds are useful as ferroelectric liquid crystal components having high polarization density. Compounds in which the chiral epoxide tail is the 1R-methyl-2S,3S-epoxy or 1S-methyl-2R,3R-epoxy enantiomer having higher polarization density.

REFERENCES:
patent: 4638073 (1987-01-01), Walba et al.
patent: 4789751 (1988-12-01), Walba et al.
patent: 4835295 (1989-05-01), Walba et al.
patent: 4876026 (1989-10-01), Saito et al.
patent: 4876028 (1989-10-01), Hemmerling et al.
patent: 4909957 (1990-03-01), Sakaguchi et al.
patent: 4973425 (1990-11-01), Kazuhiko et al.
Walba et al., (1986) J. Amer. Chem. Soc. 108:7424-7425.
Hemmerling et al., (1988) European Patent Application, Publication No. 263437.
Pp. 149-151 from Banks, James E., "Naming Organic Compounds" 2nd Edition, entitled Kinds of Systematic Nomenclature and Construction of Names.
Chemical Abstract 109:119866w.
Chemical Abstract 111:87594d.

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