3-substituted biphenyl compound

Details 3-substituted biphenyl compound 3-substituted biphenyl compound

1987-04-27

1989-04-04

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 350350S, 558415, 558428, 568331, 568642, C09K 1912, C07C 49807, C07C 43225, C07C 4984

Patent

active

048184322

ABSTRACT:
A novel 3-substituted biphenyl compound useful as a component of chiral liquid crystal compositions useful for light-switching elements by the use of ferroelectric liquid crystals; a chiral liquid crystal composition containing the compound; and a light-switching element utilizing the composition are provided, which compound is expressed by the formula ##STR1## wherein either one of R.sup.1 or R.sup.2 represents an alkyl group of 4 to 18 carbon atoms having a methyl branch and the other thereof represents an alkyl group of 2 to 18 carbon atoms; X represents a halogen atom of F, Cl or Br or cyano group; and l represents 0 to 1.

REFERENCES:
patent: 4138359 (1979-02-01), Mizukuchi et al.
patent: 4216109 (1980-08-01), Mizukuchi et al.
patent: 4478740 (1984-10-01), Eidenschink et al.
patent: 4490305 (1984-12-01), Eidenschink et al.
patent: 4505838 (1985-03-01), Romer et al.
patent: 4536321 (1985-08-01), Sugimori et al.
patent: 4544771 (1985-02-01), Romer et al.
patent: 4614609 (1986-09-01), Inoue et al.
Gray et al., Liquid Crystals & Plastic Crystals, vol. 1, pp. 142-143 (1973).
Osman et al., Z. Naturforsch., vol. 38B, pp. 1221-1226, (1983).

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