Ferroelectric liquid-crystal mixtures containing mercapto compou

Details Ferroelectric liquid-crystal mixtures containing mercapto compou Ferroelectric liquid-crystal mixtures containing mercapto compou

1991-08-07

1993-10-05

Tucker, Philip

Compositions

Liquid crystal compositions

Containing nonchiral additive having no specified mesophase

25229901, 359 75, C09K 1954, C09K 1952

Patent

active

052502155

ABSTRACT:
A liquid-crystalline mixture comprising at least two components, the first being an aromatic mercapto compound of the formula (I) ##STR1## R.sup.1, R.sup.2, R.sup.3 and R.sup.4, independently of one another, are hydrogen, alkyl having 1 to 8 carbon atoms or alkoxy having 1 to 8 carbon atoms,

REFERENCES:
patent: 4578210 (1986-03-01), Praefcke et al.
patent: 4713196 (1987-12-01), Praefcke et al.
patent: 4734522 (1988-03-01), Praefcke et al.
patent: 4816178 (1989-03-01), Katagiri et al.
patent: 4877220 (1989-10-01), Praefcke et al.

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