Chiral photoisomerizable compounds

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C252S299010, C252S299200, C252S299610, C252S299620, C252S299630, C252S299640, C252S299650, C252S299660, C252S299670, C560S076000, C560S085000

Reexamination Certificate

active

07122227

ABSTRACT:
The invention relates to chiral photoisomerizable compounds of formula (I) wherein X1, X2, X3, X4, X5and X6have the meanings given in claim1, to liquid crystalline mixtures and polymers containing them, and to the use of chiral photoisomerizable compounds, liquid crystalline mixtures and polymers containing them in optical and electrooptical devices like liquid crystal displays or projection systems, in optical elements like polarizers, retardation films, compensators, color filters or holographic elements, in liquid crystal pigments and colored films or coatings for decorative or security applications, cosmetic and pharmaceutical compositions, in nonlinear optics and optical information storage.

REFERENCES:
patent: 6319963 (2001-11-01), Coates et al.
patent: 6495217 (2002-12-01), Farrand
patent: 6511719 (2003-01-01), Farrand
patent: 6680003 (2004-01-01), Chuard et al.
patent: 6905739 (2005-06-01), Cherkaoui et al.
patent: 6953611 (2005-10-01), Hammond-Smith et al.
patent: 2328207 (1999-02-01), None
patent: 08-020641 (1996-01-01), None
Yun, Y-K; Ko, D-H; Jin, J-I; Kang, Y.S.; Zin, W-C; Jo, B-W. “Synthesis and Characterization fo New Chiral Side Chain Liquid Crystalline Polyoxetanes”, Macromolecules 2000, 33, 6653-6663 (web published Aug. 10, 2000).
Hattori, H.; Uryu, T., “Photochromic chiral liquid crystalline systems containing spiro-oxazine with a chiral substituent I. Synthesis and characterization of compounds”, Liquid Crystals, 2001, vol. 28, No. 1, pp. 25-34.
Ritter, O.M.S; Merlo, A.A.; Pereira, F.V.; Da Silveira, N.P.; Geissler, E.; Zukerman-Schpector, J. “Synthesis and characterization of new chiral liquid crystalline polyacrylates from L-isoleucine”, Liquid Crystals, 2002, No. 9, 1187-1200.
English translation of Yusuke et al.
K. Yokota et al., “Chirality induction in cyclopolymerization XI. Bulkiness effect of 1,2-diol templateson cyclopolymerations of bis(4-vinylbenzoate)s with styrene,” Polymer Journal, 1999, pp. 1037-1040, vol. 31, No. 11-2, XP001053658, Scheme 1, Compound 1e.
S. M. Kelly et al., “Four-unit linking groups V. optically active dopants,” Liquid Crystals, 1992, pp. 761-771, vol. 11, No. 5, XP002192313, table 3.
Witte Van De P et al., “Modification of the pitch of chiral nematic liquid crystals by means of photisomerization of chiral dopants,” Liquid Crystals, Jun. 1, 1998, pp. 819-827, vol. 24, No. 6, XP000773004, ISSN: 0267-8292, cited in the application, the whole document, Taylor and Francis Ltd, London, GB.
Deussenn H-J et al., “New 6,-6-disubstituted-binaphthol derivatives as chiral dopants: Synthesis and temperature dependence of molecular conformations,” Liquid Crystals, Sep. 1, 1996, p. 327-340, vol. 21, No. 3, XP000629493, ISSN: 0267-8292, cited in the application, the whole document, Taylor and Francis Ltd, London, GB.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Chiral photoisomerizable compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chiral photoisomerizable compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chiral photoisomerizable compounds will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3718357

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.