Liquid crystal siloxanes

Details Liquid crystal siloxanes Liquid crystal siloxanes

1995-02-10

1996-08-20

Wu, Shean C.

Compositions

Liquid crystal compositions

25229966, 556450, 556453, 556454, 556456, C09K 1952, C09K 1912, C07F 704, C07F 708

Patent

active

055476040

ABSTRACT:
Siloxane compounds having a smectic liquid crystal phase and the general formula ##STR1## wherein each R=alkyl, alkenyl or aryl, Q represents a monovalent group, for example alkyl, --(CH.sub.2).sub.n OM', a chiral organic group, a dye group, a non-linear optic group or the group --(CH.sub.2).sub.n L, in which L represents a siloxane group, M and M' each represent ##STR2## wherein A is carboxyl, T is CN, F or Cl and p=0 or 1, provided that when T is F or Cl x has a value of at least 2.

REFERENCES:
patent: 4358391 (1982-11-01), Finkelmann et al.
patent: 4981607 (1991-01-01), Okawa et al.
patent: 5106530 (1992-04-01), Hans et al.
patent: 5138010 (1992-08-01), Keller et al.
patent: 5259987 (1993-11-01), McArdle et al.
patent: 5316693 (1994-05-01), Yuasa et al.
patent: 5354489 (1994-10-01), Inoue et al.
patent: 5455697 (1995-10-01), Coles et al.

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