Dongjin Semichem Co., Ltd.

Sk Chemicals Co., Ltd.

Sun-Hee Lee

Ji-Hoon Kim

Jong-In Lee

Kwang Sei Oh

Bong Hee Kim

Young Kuk Kim

Bo Ra Hong

Mi Kyoung Lee

Kyung-Hee Choi

Myung-Se Lee

Jin-Wook Choi

The present invention is a composition for liquid crystal polymer synthesis comprising an alicyclic dicarboxylic acid or its derivative (e.g., 1,4-cyclohexanedicarboxylic acid (CHDA)); an aromatic diol (e.g., hydroquinone (HQ)); an aromatic monocarboxylic acid having 7 to 10 carbon atoms and containing a hydroxyl group (e.g., 4-hydroxybenzoic acid, (HBA)); and an aromatic monocarboxylic acid having 11 to 20 carbon atoms and containing a hydroxyl group (e.g., 6-hydroxy-2-naphthalenecarboxylic acid (HNA)), and a liquid crystal polymer for electrical/electronic products, a polymer resin composition, and a molded product using the same.

Composition for liquid crystal polymer synthesis, liquid crystal polymer for electrical/electronic products, polymer resin composition, and molded product using the same

The present invention provides a liquid crystal composition having easily adjustable rotational viscosity while maintaining stability at low temperature, a clearing point and dielectric anisotropy (positive value) in an optimal condition according to an exemplary embodiment of the present invention, including: at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 1, as a first component; at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 2, as a second component; and at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 3, as a third component. The liquid crystal composition according to the present invention has high clearing point and refractive index anisotropy, a controllable modulus of elasticity, and high specific resistance, and the rotational viscosity thereof is easily adjustable to be low. Thus, the liquid crystal composition satisfying various liquid crystal display (LCD) device characteristics is provided.

Liquid crystal composition having easily adjustable rotational viscosity

The present invention relates to a liquid crystal compound for liquid crystal display. More particularly, the present invention provides a vinylcyclohexylbenzene, its derivatives and the preparation method thereof where the present invention produces only trans-isomer by using Heck coupling reaction instead of Wittig reaction in the introduction to ethenyl group in the central backbone in the preparation process of intermediate. The liquid crystal compound can make the liquid crystal composition have a wide mesophase range and low viscosity.

Liquid crystal compounds and method for preparing the same

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Gyeonggi-do, South Korea

Sun-Hee Lee