Lg Chem, Ltd

Eunju Park

Joong Jin Han

Hyun Woog Ryu

Kwonsu Jung

Hansol Kim

Seokhee Yoon

Seokhyun Yoon

Yong Jin Jang

Hosub Lee

Jeongbin Lee

Sung Ho Lee

Esder Kang

Youngjea Kim

Yu Jin Kim

Jong Hyun Chae

Yunah Yu

Daeil Kim

Sanghwan Jo

Taehun Yoon

Myong Jo Ham

YoungSeok Kim

Myeongjin Ha

A method is provided for preparing a low temperature thermosetting polyarylene sulfide having significantly low crystallinity while maintaining a low melt flow rate at a high polymerization yield, so as to ensure excellent laser welding property and mechanical properties even when used in a molded product on the transmitting side of laser beam by a laser welding method.

Preparation method of polyarylene sulfide

A preparation method of a polyarylene sulfide that may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method with a high molecular weight at a high yield by optimizing the content and molar ratio of an amide-based compound in a polymerization step.

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.

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 specification relates to a block polymer and 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.

Block polymer and polymer electrolyte membrane comprising same

Disclosed are metal chalcogenide nanoparticles forming a light absorption layer of solar cells including a first phase including copper (Cu)-tin (Sn) chalcogenide and a second phase including zinc (Zn) chalcogenide, and a method of preparing the same.

Metal chalcogenide nanoparticles for preparing light absorption layer of solar cells and method of preparing the same

Disclosed are a method of preparing metal nanoparticles for solar cells, an ink composition including the metal nanoparticles, and a method of preparing a thin film using the same. More particularly, there are provided a method of preparing metal nanoparticles for forming a light absorption layer of a solar cell, including preparing a first solution including a reducing agent, preparing a second solution including at least two salts selected from the group consisting of a copper (Cu) salt, a zinc (Zn) salt, and a tin (Sn) salt, preparing a mixture by mixing the first solution and the second solution, and synthesizing at least one kind of metal nanoparticles by reaction of the mixture and purifying the synthesized metal nanoparticles, an ink composition including the metal nanoparticles, and a method of preparing a thin film using the same.

Method of preparing metal nanoparticles for solar cell, ink composition including the metal nanoparticles, and method of preparing thin film using the same

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Daejeon, South Korea

Eunju Park