Cheil Industries Inc.

Samsung Sdi Co., Inc.

Lotte Chemical Corporation

Jin Yong Bae

O Sung Kwon

Mie Ock Kim

Bok Nam Jang

Jun Ho Chi

Dong Baek Kim

Seung Hwan Lee

Ju Hyun Lee

Su Jeong Song

A polyphosphonate resin composition of the present invention comprises: about 100 parts by weight of a polyphosphonate resin containing a repeating unit represented by chemical formula 1; and about 0.01 to about 0.05 parts by weight of a phosphite compound containing at least one of diphenyl hydrogen phosphite and a phosphite compound represented by chemical formula 2. The polyphosphonate resin composition has excellent heat resistance, wet heat stability, discoloration resistance, flame retardancy, and the like.

Polyphosphonate resin composition and molded article prepared therefrom

A method of preparing an aromatic carbonate includes reacting a dialkyl carbonate with an aromatic alcohol in the presence of a catalyst represented by Formula 1. With the method, aromatic carbonate can be prepared from a dialkyl carbonate in high yield using a catalyst capable of increasing initial reactivity of the dialkyl carbonate.  

Method of preparing aromatic carbonate from dialkyl carbonate

A polycarbonate-polysiloxane copolymer includes a polysiloxane unit. The polycarbonate-polysiloxane copolymer can have superior melt flowability and ductility while maintaining high transparency and low haze.

Polycarbonate-polysiloxane copolymer, and method for preparing same

A polycarbonate resin includes a repeating unit in its main chain of the following Chemical Formula 1: 

Polycarbonate resin and thermoplastic resin composition including polycarbonate resin

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Uiwang-si, South Korea

Jin Yong Bae