P-terphenyl derivatives and liquid crystalline compositions

Details P-terphenyl derivatives and liquid crystalline compositions P-terphenyl derivatives and liquid crystalline compositions

1993-11-24

1996-02-27

Tucker, Philip

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

560 59, 560 65, 560141, 568642, 568661, 570129, C09K 1912

Patent

active

054946050

ABSTRACT:
The p-terphenyl derivatives of the formula shown below are useful in preparing practical ferroelectric liquid crystalline compositions. The derivatives exhibit excellent chemical stability and display the chiral smectic C or smectic C phase over a wide temperature range. ##STR1## wherein each of R.sub.1 and R.sub.2 is a straight or branched chain alkyl group having 1-18 carbon atoms; each of Y and Z is a single bond, O, COO or OCO; and any two of X.sub.1, X.sub.2, and X.sub.3 are fluorine atoms and the remainder is a hydrogen atom.

REFERENCES:
patent: 4594465 (1986-06-01), Kam Ming Chan
patent: 4696549 (1987-09-01), Kam Ming Chan
patent: 4780240 (1988-10-01), Emoto et al.
patent: 4808333 (1989-02-01), Huynh-ba
patent: 4943387 (1990-07-01), Furukawa et al.
patent: 5064569 (1991-11-01), Geelhaar et al.
patent: 5273680 (1993-12-01), Gray et al.
"Ferroelectric Liquid Crystals", R. B. Meyer et al, Le Journal De Physique--Lettres No. 0009, Jan. 9, 1975.
"Submicrosecond bistable electro-optic switching in liquid crystals", N. Clark et al, Applied Physics Letter, American Institute of Physics, Mar. 13, 1980.
"Synthesis and Evaluation of Some 4,4"-Disubstituted Lateral Fluoro-1,1': 4',1"-terphenyls", L. K. M. Chan et al, Mol. Cryst. Liq. Cryst. 1985 vol. 123, pp. 185-204.

Affiliated with

Also associated with

Rating

P-terphenyl derivatives and liquid crystalline compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with P-terphenyl derivatives and liquid crystalline compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and P-terphenyl derivatives and liquid crystalline compositions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1676533