Polymeric liquid-crystal compound, polymeric liquid-crystal comp

Details Polymeric liquid-crystal compound, polymeric liquid-crystal comp Polymeric liquid-crystal compound, polymeric liquid-crystal comp

1992-01-15

1997-03-25

Wu, Shean C.

Compositions

Liquid crystal compositions

2522996, 25229962, 25219963, 25229966, 25229967, 349184, C09K 1952, C09K 1930, G02F 113

Patent

active

056141254

ABSTRACT:
The present invention provides a polymeric liquid-crystal compound having a repeating unit represented by Formula (I) ##STR1## wherein U represents a polymer main chain; V represents --(CH.sub.2).sub.m --, --((CH.sub.2).sub.2 --O).sub.m -- or --(CH.sub.2).sub.n --((CH.sub.2).sub.2 --O).sub.p --, one or more of methylene hydrogen atoms of which may be substituted with an alkyl group, a halogen atom, a cyano group, an amino group or a carbonyl group, and m, n and p each represents an integer of 0 to 30; W represents a single bond, --O--, --OCO--, --COO--, --CONR.sup.1 --, --CO-- or --NR.sup.1, where R.sup.1 represents a hydrogen atom or an alkyl group; X represents two or more rings of a substituted or unsubstituted aliphatic ring or aromatic ring of benzene ring, heteroaromatic ring or condensed ring, which rings are bonded through a single bond, --O--, --OCO--, --COO--, --(CH.sub.2).sub.q --, --N.dbd.N--, --(CH.dbd.CH).sub.q --, --CH.dbd.N--, --(C.tbd.C).sub.q --, --CONR.sup.1 --, --(CO).sub.q --, or --NR.sup.1 --, where q represents an integer of 1 to 10; Y represents a substituted or unsubstituted alkyl group; and the mark * represents an asymmetric carbon atom.

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