Ferroelectric liquid crystal compounds having perfluoroether terminal portions
First Claim
Patent Images
1. An achiral fluorine-containing liquid crystal compound of the general formula I:
- ##STR45## where M, N, and P are each independently ##STR46## a, b, and c are each independently zero or an integer of from 1 to 3 with the proviso that the sum of a+b+c be at least 2;
each A and B are non-directionally and independently a covalent bond, ##STR47## each X, Y, and Z are independently --H, --Cl, --F, --Br, --I, --OH, --OCH3, --CN, or --NO2 ;
each 1, m, and n are independently zero or an integer of 1 to 4, D is ##STR48## and q and q'"'"' are independently 1 to 20, and R can be straight chain or branched; and
Rf is (Cx F2x O)z Cy F2y+1 where x is independently 1 to 10 for each Cx F2x O group, y is 1 to 10 and z is 1 to 6.
2 Assignments
0 Petitions
Accused Products
Abstract
Fluorine-containing liquid crystal compounds are provided. The compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portion being connected by a central core, the compounds having smectic mesophases or having latent smectic mesophases.
-
Citations
13 Claims
-
1. An achiral fluorine-containing liquid crystal compound of the general formula I:
- ##STR45## where M, N, and P are each independently ##STR46## a, b, and c are each independently zero or an integer of from 1 to 3 with the proviso that the sum of a+b+c be at least 2;
each A and B are non-directionally and independently a covalent bond, ##STR47## each X, Y, and Z are independently --H, --Cl, --F, --Br, --I, --OH, --OCH3, --CN, or --NO2 ; each 1, m, and n are independently zero or an integer of 1 to 4, D is ##STR48## and q and q'"'"' are independently 1 to 20, and R can be straight chain or branched; and Rf is (Cx F2x O)z Cy F2y+1 where x is independently 1 to 10 for each Cx F2x O group, y is 1 to 10 and z is 1 to 6. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- ##STR45## where M, N, and P are each independently ##STR46## a, b, and c are each independently zero or an integer of from 1 to 3 with the proviso that the sum of a+b+c be at least 2;
Specification