Liquid crystalline compound liquid crystal composition and liqui

Details Liquid crystalline compound liquid crystal composition and liqui Liquid crystalline compound liquid crystal composition and liqui

1995-04-27

1997-08-05

Wu, Shean C.

Compositions

Liquid crystal compositions

25229961, 25229963, 25229964, 25229965, 570127, 570129, 544242, 546346, C09K 1952, C09K 1934, C07C 2513, C07D23902

Patent

active

056539118

ABSTRACT:
A novel liquid crystalline compound having a high elastic constant ratio (K.sub.33 /K.sub.11) and an improved solubility thereof in other liquid crystal materials, at low temperatures, and a liquid crystal composition containing the same are provided. The liquid crystalline compound is expressed by the formula (1): ##STR1## wherein Q represents CF.sub.3, CF.sub.2 H or CFH.sub.2 ; A.sub.1, A.sub.2 and A.sub.3 each independently represent trans-1,4-cyclohexylene group, 1,4-phenylene group, wherein one or more hydrogen atoms on its six-membered ring may be replaced by F, Cl or CN, pyridine-2,5-diyl group or 1,3-pyrimidine-2,5-diyl; ring B represents 1,4-phenylene group or trans-1,4-cyclohexylene group; Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent covalent bond, --C.dbd.C--, --C.tbd.C--, --OCO--, --COO--, --CH.sub.2 O--, --OCH.sub.2 --, --(CH.sub.2).sub.2 -- or --(CH.sub.2).sub.4 --; l and m each independently represent an integer of 0 to 5; o and p each independently represent 0 or 1; L.sub.1 and L.sub.2 each independently represent H, F or Cl; L.sub.3 represents halogen atom, CN, CF.sub.3, CF.sub.2 H, CFH.sub.2, OCF.sub.3, OCF.sub.2 H, H or an alkyl group of 1 to 10 carbon atoms or an alkenyl group of 2 to 10 carbon atoms wherein optional methylene groups (--CH.sub.2 --) in the alkyl group or the alkenyl group each independently may be replaced by --O--, --S--, --CO--, --OCO-- or --COO--, but two or more methylene groups should not be continuedly replaced.

REFERENCES:
patent: 5183587 (1993-02-01), Kitano et al.
patent: 5382379 (1995-01-01), Onji et al.

Affiliated with

Also associated with

Rating

Liquid crystalline compound liquid crystal composition and liqui does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystalline compound liquid crystal composition and liqui, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystalline compound liquid crystal composition and liqui will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1072444