Chiral compounds

Details Chiral compounds Chiral compounds

2007-05-24

2008-09-16

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299010, C549S348000

Reexamination Certificate

active

07425356

ABSTRACT:
The invention relates to chiral compounds of formula I wherein X1, X2, X1, X2, x1, x2, y1, y2, B, C, U1, U2, V1, V2, W1and W2have the meaning given in claim1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.

REFERENCES:
patent: 7223450 (2007-05-01), Taugerbeck et al.
patent: 2004/0089843 (2004-05-01), Suermann et al.
patent: 2004/0155221 (2004-08-01), Hammond-Smith et al.
patent: 2004/0173775 (2004-09-01), Suermann et al.
patent: 2005/0219447 (2005-10-01), Staney et al.
Green M.M. et al.: “Mechanism of the transformation of a stiff polymer lyotropic nematic liquid crystal to the cholesteric state by dopant-mediated chiral information transfer” Journal of the American Chemical Society., vol. 120, No. 38, Sep. 30, 1998, 9810-9817, XP002214617.
Gottarelli G. et al. “Induction of the cholesteric mesophase in nematic liquid crystals: mechanism and application to the determination of bridged biaryl configurations” Journal of the American Chemical Society., vol. 105, No. 25, Dec. 14, 1983, pp. 7318-7321, XP002214618.
Kuball H-G et al. “Chirality and circular dichroism of oriented molecules and anisotropic phases” Chirality, Wiley-Liss, New York, US, vol. 12, No. 4, 2000, pp. 278-286, XP001041318.
Zhang M. et al. “Chirochromism-photo-chromism by epimerization: search for a liquid crystal phototrigger” Journal of the American Chemical Society, American Chemical Society, Washington, DC, US, vol. 116, No. 11, Jun. 1, 1994, pp. 4852-4857, XP002189468.
Kelly S M et al. Four-unit linking groups v. optically active dopants: Liquid crystals, Taylor and Francis Ltd, London, GB, vol. 11, No. 5, 1992, pp. 761-771, XP000606158.
CAPLUS: 1991:42238.
CAPLUS: 1994: 495658.
CAPLUS: 1996: 45831.

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