Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With viewing layer of specified composition
Reexamination Certificate
2005-11-08
2005-11-08
Wu, Shean C. (Department: 1756)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
With viewing layer of specified composition
C428S001100, C252S299010, C252S299100, C252S299620, C349S117000, C349S118000, C349S194000, C544S339000, C359S485050, C359S490020
Reexamination Certificate
active
06962734
ABSTRACT:
The present invention relates to organic chemistry, in particular, to synthesis of sulfoderivatives of the polycyclic compounds and fabrication of optically anisotropic coatings on their base.The indanthrone sulfoderivatives of the general structural formulas I or II capable of forming LLC phase are disclosed. The disclosed compounds could be used, in particular, for producing optically isotropic or anisotropic and at least partially crystalline films. The application also includes the liquid crystal systems based on the disclosed compounds, and anisotropic films.wherein n is 3 or 4,R═CH3, C2H5, OCH3, OC2H5, Cl, Br, OH, NH2,z is the value selected from the list including 0, 1, 2, 3, and 4,M—counterion, andj—number of counterions in a dye molecule, and which can be fractional in case of one counterion belonging to several molecules, and in case n>1, counterions may be different.
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Nazarov Victor V.
Sidorenko Elena N.
Dorsey & Whitney LLP
Nitto Denko Corporation
Wu Shean C.
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