Lg Chem, Ltd

Sang Cheol Shin

Joon Ho Shin

Sang Ho Lee

Seung Young Park

Jun Seok Ko

Hyun Taek Oh

Seong Beom Heo

Seo Hwa Kim

Sung Kyoung Kim

Kyung Min Min

Won Seok Kim

Won Hee Woo

Yong Heon Cho

Yeong Min Kim

Gyo Hee Kim

Seon Cheol Cha

The present disclosure relates to a method for separating an organic zinc catalyst dispersed in a polyalkylene carbonate resin solution by filtering the polyalkylene carbonate resin solution using a composite filtering membrane, which is a composite material comprising a hydroxyl group-containing material and polyolefin material and has a form in which one or both surfaces of the polyolefin material is coated with the hydroxyl group-containing material.

Method for separating organic zinc catalyst using filtering membrane

The present disclosure provides a polyalkylene carbonate-based resin having excellent thermal stability, thereby having an improved heat shrinkage phenomenon, and a molded article produced using the same. The polyalkylene carbonate-based resin includes 100 parts by weight of a base resin including a polyalkylene carbonate resin and a polylactide resin, and 5 parts by weight to 10 parts by weight of a heat shrinkage prevention agent, wherein the base resin includes the polyalkylene carbonate resin and the polylactide resin in a weight ratio of 6:4 to 4:6, and the heat shrinkage prevention agent is one or more selected from the group consisting of a polyalkyl(meth)acrylate-based resin, a polyalphaolefin-vinyl acetate-based resin, and a polyoxyalkylene-based resin.

Polyalkylene carbonate-based resin, and molded article produced therefrom

The present disclosure relates to a method for separating an organozinc catalyst from a polyalkylene carbonate polymerization solution, and the method of the present disclosure includes: stirring and aging a polymerization solution including a polyalkylene carbonate resin, an organozinc catalyst, an alkylene oxide and a polymerization solvent; and filtering the polymerization solution after completing the aging.

Method for separating organozinc catalyst from polyalkylene carbonate polymerization solution

The present disclosure relates to a method of preparing an organic zinc catalyst through solid phase blending that does not require a solvent and a washing process, and a method of preparing a polyalkylene carbonate resin by using the organic zinc catalyst prepared thereby.

Method of preparing organic zinc catalyst and method of preparing polyalkylene carbonate resin by using the organic zinc catalyst prepared thereby

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Daejeon, South Korea

Sang Cheol Shin