Lg Chem, Ltd

Kwonsu Jung

Joong Jin Han

Hyun Woog Ryu

Eunju Park

Hansol Kim

Yong Jin Jang

Jong Hyun Chae

Daeil Kim

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.

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Daejeon, South Korea

Kwonsu Jung