Patent classifications
C09K19/406
Polysilsesquioxane-dendron liquid crystals and method for preparing the same
Due to excellent processability of the POSS-dendron-structured liquid crystal compound according to the present invention, it is possible to coat and print on the compound and, also, to manufacture large size flexible devices. According to the present invention, it is possible to maximize the physical bond strength between liquid crystals and, thus, to form higher-order structures by controlling the physical bond strength. Since the POSS-dendron-structured liquid crystal compound of the present invention introduces non-functional groups to inorganic chemicals in contrast to the conventional liquid crystals, the compound disperses well into general types of solvents. In addition, the chemical and mechanical properties of the compound of the invention, such as increase of maximum allowable temperature, inhibition of oxidation, increase of surface hardness, etc., improves since polysilsesquioxane includes reactive or non-reactive organic compounds. When the POSS-dendron-structured liquid crystal compound of the invention is used as an additive for liquid crystal layers, it can enhance the orientation of liquid crystal molecules. Moreover, the POSS part of the added liquid crystal compound of the invention may move to the lower surface of the liquid crystal layer and, then, improves the orientation.
Birefringent polymer film with negative optical dispersion
The invention relates to a polymer film having negative optical dispersion, novel polymerisable compounds and liquid crystal (LC) materials for its preparation, and the use of the polymer film and novel compounds and materials in optical, electrooptical, electronic, semiconducting or luminescent components or devices.
Liquid crystal composition
Provided is a liquid crystal composition. The liquid crystal composition includes 1 to 50 wt % of an achiral smectic liquid crystal, and a remaining amount of a nematic liquid crystal. The nematic liquid crystal includes a negative nematic liquid crystal.
Nonlinear Optical Chromophores Having Tetrahydrocarbazole Donor Groups, Lyotropic Compositions Containing the Same, and Methods of Poling Such Compositions
Nonlinear optical chromophore compositions which display lyotropic nematic liquid crystal phases in polar organic solvents and provide a mechanical anisotropic effect allowing for the formation of a non-centrosymmetric chromophore-polymer matrix without the application of an electric field.
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Liquid Crystalline Polymer Composition and Molded Article Produced Therefrom
A liquid crystalline polymer composition of the present invention comprises: about 10-50% by weight of a liquid crystalline polymer, about 20-60% by weight of an aromatic sulfone polymer, and about 10-50% by weight of an inorganic filler having a pH of about 7-12. The liquid crystalline polymer composition has excellent fluidity, rigidity, and abrasion resistance, and generates little dust.
Liquid crystalline polymer composition and molded article produced therefrom
A liquid crystalline polymer composition of the present invention comprises: about 10-50% by weight of a liquid crystalline polymer, about 20-60% by weight of an aromatic sulfone polymer, and about 10-50% by weight of an inorganic filler having a pH of about 7-12. The liquid crystalline polymer composition has excellent fluidity, rigidity, and abrasion resistance, and generates little dust.