Lg Chem, Ltd

Hyun Woog Ryu

Joong Jin Han

Yong Jin Jang

Esder Kang

Youngjea Kim

Sehee Jung

Kwonsu Jung

Eunju Park

Hansol Kim

Yunah Yu

Jong Hyun Chae

Daeil Kim

Soyoung Yu

Eun Ju Park

The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by using a dihalogenated aromatic compound in a predetermined equivalent ratio with respect to a sulfur compound and performing both dehydration and polymerization under optimum conditions.

Preparation method of polyarylene sulfide

A method for preparing polyarylene sulfide that can control a viscosity grade thereof by adjusting the molar ratio of water and amide-based compounds present in a polymerization reaction.

Method for preparing polyarylene sulfide

The present invention provides a polyarylene sulfide resin composition comprising a mixture of polyarylene sulfide and a binder resin having excellent electrical conductivity and high temperature stability.

Conductive polyarylene sulfide resin composition

According to the present invention, an alkali metal salt such as NaCl which is a major by-product of polyarylene sulfide polymerization may be recycled in the dehydration reaction for the preparation of a sulfur source, thereby providing a method of preparing a polyarylene sulfide with a high yield in an economical manner.

Method of preparing polyarylene sulfide

The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an aliphatic amino acid hydrochloride in addition to existing materials for dehydration.

The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an acidic compound in addition to existing materials for dehydration.

The present invention relates to a method of preparing a polyphenylene sulfide and a high-viscosity polyphenylene sulfide prepared using the method. In this method, the ratio of an organic phase to an aqueous phase is controlled by controlling dehydration conditions, so that high viscosity may be realized without adversely affecting a reaction or physical properties during preparation of the polyphenylene sulfide.

Method of preparing polyphenylene sulfide and high-viscosity polyphenylene sulfide prepared using the same

The present specification relates to a novel compound, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.

Compound and polymer electrolyte membrane using same

The present specification relates to a fluorine-based compound for a brancher, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell using the same, and a redox flow battery including the same.

Fluorine-based compound for brancher, polymer using same, and polymer electrolyte membrane using same

The present specification relates to a compound comprising an aromatic ring, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.

Compound comprising aromatic ring, and polyelectrolyte membrane using same

The present specification relates to a compound comprising an aromatic ring, a polymer comprising the same, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.

Compound comprising aromatic ring having sulfonamide and ion transport group, polymer comprising same, and polyelectrolyte membrane using same

The present specification relates to a polymer and a polymer electrolyte membrane including the same.

Polymer and polymer electrolyte membrane comprising same

The present specification relates to a polymerization composition, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell including the same, and a redox flow battery including the same.

Polymerization composition, polymer using polymerization composition, and polymer electrolyte membrane using polymer

The present specification relates to a polymer with improved acid resistance, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.

The present specification relates to a halogenated compound, a polymer and a polymer electrolyte membrane including the same.

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Daejeon, South Korea

Hyun Woog Ryu