Chiral phenolic esters of mesogenic carboxylic acids and their u

Details Chiral phenolic esters of mesogenic carboxylic acids and their u Chiral phenolic esters of mesogenic carboxylic acids and their u

1988-01-21

1989-05-02

Gron, Teddy S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229962, 25229901, 350350R, 350350S, 534566, 534567, 534577, 544316, 544318, 544296, 544298, 544332, 544335, 549370, 549371, 549372, 549373, 549375, 560 1, 560 35, 560 59, 560 66, 560 78, 560102, 560126, 560116, 560 86, 560108, 560125, 560118, C09K 1952, C09K 1934, C09K 1932, G02F 113

Patent

active

048266205

ABSTRACT:
The new esters derived from a chiral compound containing two OH groups and at least one mesogenic carboxylic acid which have the general formula (I) ##STR1## in which X.sup.1 =O--H or O--CO--(C.sub.1 to C.sub.12)alkyl and X.sup.2 =O--MC or X.sup.1 and X.sup.2 denote O-MC independently of each other, where MC is the molecular radical of a mesogenic monocarboxylic acid after splitting off an OH group.
The esters or esters substituted in the aromatic part of the phenolic part preferably find application as an admixture intwistable liquid crystal phases in which they produce a temperature compensation and a high degree of twisting.

REFERENCES:
patent: 4264148 (1981-04-01), Gobl-Wunsch et al.
patent: 4454057 (1984-06-01), Kaneko et al.
patent: 4457828 (1984-07-01), Lewis
patent: 4650600 (1987-03-01), Heppke et al.
Heppke et al., CA 106:41948r (1987).
Miyano et al., CA 101:230097 v (1984).
Byung Wook Jo et al., Makromolekular Chemie Rapid Comm., vol. 3, pp. 23-27 (1982).
Gottarelli et al., Journal of Organic Chemistry, vol. 51, No. 5, pp. 589-592 (1986).

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