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Cholesteric liquid crystal additives

  • US 20060124898A1
  • Filed: 02/09/2006
  • Published: 06/15/2006
  • Est. Priority Date: 02/24/2003
  • Status: Active Grant
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First Claim
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1. A cholesteric liquid crystal composition comprising:

  • at least one cholesteric liquid crystal precursor; and

    at least one non-liquid crystalline additive of formula I embedded imagewhere M, N, and Q are each independently;

    embedded imageb and c are each independently zero or 1;

    W, X, and V are each non-directionally and independently a covalent bond, —

    C(═

    O)—

    O—

    , —

    C(═

    O)—

    S—

    , —

    C(═

    O)—

    Se—

    , —

    C(═

    O)—

    Te—

    , —

    (CH2)k—

    where k is 1 to 8, —

    (CH═

    CH)—

    , —

    (C≡

    C)—

    , —

    CH═

    N—

    , —

    CH2—

    O—

    , —

    C(═

    O)—

    , —

    O—

    , —

    O—

    C(═

    O)—

    O—

    , or a combination thereof;

    Y, Z, and U are each independently —

    H, —

    Cl, —

    F, —

    Br, —

    I, —

    OH, —

    O(CH2)jCH3 where j is 0 to 8, —

    CH3, —

    CF3, —

    OCF3, —

    CN, —

    NO2, aryl, arylalkoxy, carboxylic acid, thioether, or an amide;

    e, f, and g are each independently zero, 1, 2, 3, or 4;

    h is 1, 2, or 3; and

    R is —

    H, —

    OH, —

    CN, C1-C8 alkyl, C1-C8 alkoxy, an aryl group, an arylalkoxy group, a carboxylic acid group, a halogen, a thioether, or an amide.

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