Lg Chem, Ltd

Byoungkue Jeon

Mooho Hong

Youngwook Son

Young In Yang

Young Young Hwang

Ki Jae Lee

Daehyeon Hwang

Moo Ho Hong

Hoyong Lee

Seongmi Cho

Young Wook Son

Jihye Jung

The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

Polycarbonate and preparation method thereof

Provided is a polycarbonate composition comprising a polycarbonate and a light blocking agent, and an optical product formed therefrom. The polycarbonate composition has a low yellow index, unlike conventional yellowish blue light-blocking products, and thus various colors can be implemented. Accordingly, it is possible to provide optical products with various colors, and the polycarbonate composition is very suitable for spectacles required to have high transparency and to block blue light that is harmful to eyes.

Polycarbonate composition and optical product formed therefrom

Provided are a polycarbonate resin composition comprising a polycarbonate resin, pentaerythritol tetrastearate, a black dye, and a blue dye, and an optical molded product comprising same.

Polycarbonate resin composition and optical molded product including the same

Provided is a polycarbonate of Chemical Formula 1: 

Provided is a copolycarbonate comprising a first repeating unit of Chemical Formula 1, a second repeating unit of Chemical Formula 2, and a terminal capping group of Chemical Formula 3: Also provided are a method of preparing the copolycarbonate and a molded article including the copolycarbonate.

Copolycarbonate and method for preparing the same

Provided are a polycarbonate resin composition comprising a polycarbonate resin, a black colorant, a yellow colorant, and at least one ultraviolet absorber selected from the group consisting of a benzotriazole-based compound, a benzophenone-based compound, and a triazine-based compound, and an optical molded article composed thereof.

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Daejeon, South Korea

Byoungkue Jeon