Lg Chem, Ltd

Mooho Hong

Sang-Hoon Lee

Youngwook Son

Young Young Hwang

Ki Jae Lee

Byoungkue Jeon

Daehyeon Hwang

Young In Yang

Hoyong Lee

Hyong Min Bahn

Sang Hoon Lee

Jae Hoon Choe

Seongmi Cho

Un Ko

Boo Gon Woo

Cheol Jun Song

Hyeon Hui Kim

Jeeseon Kim

Jihye Jung

Hyunju Kim

Jaemyeng Jeong

Hanbit Jang

Jungmoon Bae

Sugil Yum

Dayoung Lee

Soyeon Jee

Provided are a diol compound which may be used to prepare a polycarbonate having excellent weather resistance, hardness, heat resistance, transparency, impact resistance, etc. while having excellent mechanical properties, a polycarbonate prepared by using the same, and a preparation method thereof.

Diol compound, polycarbonate, and preparation method thereof

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

A method for preparing granular polycarbonate particles is disclosed herein. In some embodiments, a method for preparing granulated polycarbonate particles includes mixing a polymerization reaction solution comprising polycarbonate and an organic solvent, and an anti-solvent solution comprising water and an anti-solvent to prepare a mixed solution, heating the mixed solution to remove the organic solvent, and drying or filtering the mixed solution to obtain granular polycarbonate particles. The granular polycarbonate particles having excellent physical properties without using a stabilizer or a surfactant can be obtain.

Method for preparing granular polycarbonate

Provided is a diol compound of the following Chemical Formula 1, a polycarbonate comprising the diol compound, and a method of producing the polycarbonate:

Diol compound, polycarbonate, and preparation method of the same

Provided is a polycarbonate resin composition and a molded product comprising same. The polycarbonate resin composition comprises a linear polycarbonate resin, a branched polycarbonate resin, a fluorinated sulfonate-based metal salt, a phenyl methyl silicone oil, and a phenyl methyl silicone resin. The linear polycarbonate resin and branched polycarbonate resin include a repeating unit of the following Chemical Formula 1:

Polycarbonate resin composition and article including the same

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 are a copolycarbonate and a polycarbonate composition comprising the same. The copolycarbonate comprises repeat units of the following Chemical Formula 1 and repeat units of the following Chemical Formula 2: Chemical Formula 1  Chemical Formula 2 

Copolycarbonate and polycarbonate composition comprising 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 is a method of preparing styrene polymers, the method comprising: homogeneously mixing a styrene monomer; a cocatalyst mixture of Group 13 metal-containing organic metal compound cocatalyst and an inert organic solvent; and a catalyst mixture of a metallocene catalyst and the inert organic solvent using a high speed homogenizing mixer to obtain a homogenized mixture; and providing the homogenized mixture to a reactor to initiate polymerization. In this method, catalyst is quickly dispersed among monomers using a high speed homogenizing mixer so that formation of gel, which occurs when a syndiotactic styrene polymer is produced, can be fundamentally prevented. In addition, a styrene polymer prepared using the method has high activity, good stereoregularity, and uniform molecular distribution.

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Daejeon, South Korea

Mooho Hong