Lg Chem, Ltd

Sung-Kyoung Kim

Seung Young Park

Hyun Ju Cho

Hyeon Sik Choi

Hyun Min Kim

Seong Kyun Kang

Jun Wye Lee

Ki-Hwan Kim

Jin Woo Lee

Gyo Hyun Hwang

Yun Ki Cho

Yong Hee An

Bo Hyun Seong

Jung Min Sohn

Jungup Bang

Eun Kyoung Park

Jong Won Lee

Yoon Jung Kim

Il Ha Lee

Taek Jun Jung

Yongju Bang

Kyosung Park

Byung Hee Choi

The disclosed relates to a method for preparing an organic zinc catalyst used in the synthesis of a polyalkylene carbonate resin, an organic zinc catalyst provided therefrom, and a method for preparing a polyalkylene carbonate resin using the catalyst. The organic zinc catalyst according to the present disclosure includes a predetermined amount of Zr on the surface through a simple process, and thus can exhibit improved catalytic activity as compared to a conventional catalyst in the polymerization process for preparing a polyalkylene carbonate resin.

Method for preparing organic zinc catalyst, organic zinc catalyst prepared by the method and method for preparing polyalkylene carbonate resin using the catalyst

The disclosed relates to a polyalkylene carbonate resin composition, and more specifically, to a polyalkylene carbonate resin composition containing polyalkylene carbonate and polyketone. The polyalkylene carbonate resin composition particularly exhibits excellent thermal stability, while having excellent transparency and flexibility, oxygen barrier properties, and mechanical and chemical properties.

Polyalkylene carbonate resin composition and polyalkylene carbonate resin molded article

The disclosed relates to a polyalkylene carbonate-based resin film. More specifically, the present disclosure relates to a polyalkylene carbonate resin-based film comprising a blend resin in which a polyalkylene carbonate resin and a polyketone resin are mixed in a specified amount, thereby ensuring both excellent tensile strength and tear strength without deteriorating elongation properties possessed by the polyalkylene carbonate resin.

Polyalkylene carbonate-based resin film

Provided are a poly(alkylene carbonate) resin composition having improved mechanical properties, heat resistance, and processability, a preparation method of the poly(alkylene carbonate) resin composition, a molded article formed by using the composition, and a preparation method of the molded article, in which the poly(alkylene carbonate) resin composition includes poly(alkylene carbonate) having a weight average molecular weight of 100,000 g/mol to 500,000 g/mol and polyamide having a melting point of 180&#xb0; C. to 194&#xb0; C. at a weight ratio of 95:5 to 75:25.

Poly(alkylene carbonate) resin composition, preparation method thereof, molded article formed therefrom, and preparation method of molded article using the same

The present invention relates to a polyketone resin composition and a polyketone resin molded article produced by using the composition, and particularly to a polyketone resin and a polyketone resin molding which comprise a predetermined content of polyketone and polyalkylene carbonate and thus have enhanced melt stability of polyketone.

Polyketone resin composition and polyketone resin molded article

The present invention relates to an organic zinc catalyst which exhibits more improved catalytic activity than conventional organic zinc catalysts during a polymerization process for the preparation of a polyalkylene carbonate resin and is capable of preventing an aggregation phenomenon during a reaction, a method for preparing the same, and a method for preparing a polyalkylene carbonate resin using the organic zinc catalyst. The method for preparing an organic zinc catalyst includes the step of reacting a zinc precursor with a dicarboxylic acid in the presence of a polyether derivative to form a zinc dicarboxylate-based catalyst.

Organic zinc catalyst, preparation method thereof, and method for preparing polyalkylene carbonate resin using the catalyst

The present disclosure relates to an economical method of preparing a resin composition including a polyalkylene carbonate with improved thermal stability and processability. More specifically, the method of preparing a resin composition includes the steps of polymerizing carbon dioxide and an epoxide compound in the presence of a zinc-based catalyst and a solvent, recovering monomers, removing the catalyst and recovering raw materials, solution-blending with a thermostable resin to improve the thermal stability and processability, and removing the solvent and byproducts from the reaction mixture by using an agitated flash drum and an extrusion or kneader-type devolatilizer.

Economical method of preparing a resin composition including polyalkylene carbonate with improved thermal stability and processability

The present invention relates to an organozinc-supported catalyst, a method for producing the same, and a method for preparing a polyalkylene carbonate resin using the catalyst. The organozinc-supported catalyst provided by the present invention includes a zinc dicarboxylate-based catalyst supported on a zinc compound layer formed on at least a portion of a support surface, and can be used repeatedly or continuously while exhibiting improved selectivity in the polymerization process for preparing a polyalkylene carbonate resin.

Organozinc-supported catalyst, method for producing the same, and method for preparing polyalkylene carbonate resin using catalyst

An organic zinc catalyst having more uniform and fine particle size and showing more improved activity in a polymerization process for the preparation of a poly(alkylene carbonate) resin and a preparation method thereof, and a method of preparing a poly(alkylene carbonate) resin using the organic zinc catalyst, are provided. The preparation method of the organic zinc catalyst includes the steps of surface-treating a zinc precursor with a dispersant, and reacting the surface-treated zinc precursor with dicarboxylic acid to form a zinc dicarboxylate-based catalyst.

Organic zinc catalyst, preparation method thereof, and method of preparing poly(alkylene carbonate) resin using the same

The present disclosure relates to an organic zinc catalyst suppressing agglomeration among catalyst particles during a manufacturing method to have more uniform and finer particle size, thereby showing a more improved activity in a polymerization process for manufacturing a polyalkylene carbonate resin, a manufacturing method thereof, and a manufacturing method of a polyalkylene carbonate resin using the same, wherein the organic zinc catalyst is a zinc dicarboxylate-based organic zinc catalyst used for a reaction in which a polyalkylene carbonate resin is manufactured from carbon dioxide and epoxide and includes a monocarboxylic acid-derived moiety having a C3-C15 aliphatic hydrocarbon group (provided that at least one oxygen or carbonyl group is included or not included in the aliphatic hydrocarbon group) that is bonded to an end of at least one side of the zinc dicarboxylate-based organic zinc catalyst.

Organic zinc catalyst, and manufacturing method thereof and manufacturing method of polyalkylene carbonate resin using the same (as amended)

An organic zinc catalyst and a preparation method thereof are provided. According to the present invention, the organic zinc catalyst has a smaller thickness and a larger surface area to exhibit more improved activity in polymerization for the preparation of a poly(alkylene carbonate) resin.

Organic zinc catalyst and preparation method thereof

The present invention relates to a manufacturing method of an organic zinc catalyst having more uniform and finer particle size and showing a more improved activity in a polymerization process for manufacturing a polyalkylene carbonate resin, and a manufacturing method of the polyalkylene carbonate resin using the organic zinc catalyst obtained by the manufacturing method of the organic zinc catalyst, the manufacturing method of an organic zinc catalyst including: forming a zinc dicarboxylate-based catalyst by reacting a zinc precursor with C3-C20 dicarboxylic acid, wherein the reaction step is performed under a condition in which the number of moles of the dicarboxylic acid is more than that of the zinc precursor in a reaction system, throughout the entire reaction step.

Manufacturing method of organic zinc catalyst and manufacturing method of polyalkylene carbonate resin

The present invention relates to a manufacturing method of a polyalkylene carbonate resin capable of suppressing agglomeration among catalyst particles during polymerization to maintain an excellent catalytic activity in a polymerization process,

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Daejeon, South Korea

Sung-Kyoung Kim