Korea Research Institute of Chemical Technology

Jong-Wook Ha

In Jun Park

Soo-Bok Lee

Dong-Kwon Kim

Kwang-Won Lee

Kwang Won Lee

Jeong-Hoon Kim

Kwang-Han Kim

Soo Bok Lee

Sang Goo Lee

Bong-Jun Chang

Jaewon Kim

Jeong Hoon Kim

Hyung-Sang Park

Sang-Yun Lee

In Joon Park

Eun-ho Sohn

Won-Wook So

Jeong-Hun Kim

Dae-hwan Jung

Shin Hong Yook

Mi-Sun Cha

In-Joon Park

Juergen Ruehe

Sang-Man Ahn

Seung-Hak Choi

In an aspect of the present invention, a fluoropolymer represented by formula 1 is provided. The fluoropolymer provided in one aspect of the present invention can obtain low surface energy and high light transmittance, and thus can be applied to various applications requiring such properties. In particular, when the fluoropolymer is coated on glass, the surface energy can be lowered to 19 mN/m or less and the light transmittance can be increased by 2% or more. At the same time, it has the effect of exhibiting excellent pencil hardness. In addition, the fluoropolymer provided in one aspect of the present invention can be applied as a surface coating and membrane material of various products due to its high solubility in general organic solvents, despite having very low surface energy during coating. Furthermore, the fluoropolymer has excellent adhesive power to the substrate surface and is capable of hardening, so it can be applied to various fields such as automotive glass, building exterior materials, condensers in fresh water or power plants, and solar cells.

Fluoropolymer, fluoropolymer composition containing same, and fluoropolymer film using same

The present invention relates to hexafluoropropylene oxide polymer composition and a process of preparing ofhexafluoropropylene oxide polymer by an anionic polymerization, and in particular the hexafluoropropylene oxide polymer composition comprises an anionic initiator, a polar solvent, hexafluoropropylene and hexafluoropropylene oxide. The hexafluoropropylene oxide polymer is prepared under particular reaction conditions by using the composition, hexafluoropropylene oxide poylymer prepared by using the composition according to a preparation process herein has a weight average molecular weight (Mw) of 1,500-4,000 at &#x2212;10 to 20&#xb0; C.

Hexafluoropropylene oxide polymer compositions and a preparing method of hexafluoropropylene oxide polymer using hexafluoropropylene oligomer

The present invention relates to hexafluoropropylene oxide polymer composition and a process of preparing of hexafluoropropylene oxide polymer by an anionic polymerization, and in particular the hexafluoropropylene oxide polymer composition comprises an anionic initiator, a polar solvent, hexafluoropropylene and hexafluoropropylene oxide. The hexafluoropropylene oxide polymer is prepared under particular reaction conditions by using the composition, hexafluoropropylene oxide polymer prepared by using the composition according to a preparation process herein has a weight average molecular weight (Mw) of 1,500-4,000 at &#x2212;10-20&#xb0; C.

Hexafluoropropylene oxide polymer compositions and a method of preparing hexafluoropropylene oxide polymer using hexafluoropropylene oligomer

A novel polyvinyl alcohol-based polymer membrane is disclosed. The novel polyvinyl alcohol-based polymer membrane of the present invention comprises two different compounds which are crosslinked by irradiating light such as UV or electronic beams or heat treatment to form a covalent bond between double bonds thereby providing improved properties such as chemical resistance and durability. This invention also relates to a process its preparation.

Crosslinked polyvinyl alcohol-based polymer membrane and a process of its preparation

The present invention relates to a method for preparing hexafluoropropylene oxide with high yield, and particularly to a method for preparing hexafluoropropylene oxide comprising the step of performing a two-phase interfacial reaction between an organic phase containing hexafluoropropylene and an aqueous phase containing a hypochlorite oxidant in the presence of a phase-transfer catalyst and a non-ionic surfactant to improve the degree of emulsification and dispersion of the organic phase and to increase the contact interfacial area, thereby increasing the efficiency and the yield of the reaction.

Manufacturing method of hexafluoropropylene oxide with high yield

The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof in which a hydrocarbon compound with hydrophilic groups serves as a main chain and a macromonomer prepared by copolymerization of an unsaturated hydrocarbon compound and a perfluoro alkyl compound is incorporated into side chains, thereby imparting amphoteric property on the present polymer. Therefore, the present polymer allows self-emulsification and shows soil release, water-repellent and oil-repellent properties with no help of emulsifier, applicable to a variety of industrial fields such as coating, adhesive, fiber, precision chemistry, biological/biochemical industry, electric/electronic, automobile and metal industries.

Fluorine-containing amphoteric polymer for surface coating and preparation method thereof

The present invention relates to a super water-repellent organic/inorganic composite material, more particularly to a new-concept super water-repellent organic/inorganic composite material with superior separation property having skin layer chemically immobilized with functional polymer on the porous inorganic support surface with fractal surface structure and pores of nanometers to micrometers, using grafting-from surface polymerization method.

Super water-repellent organic/inorganic composite membrane

The present invention relates to preparation of fluorinated core-shell particles with water and oil repellency, and more particularly, to preparation of emulsion-type coating material with good water and oil repellency using only small amount of expensive fluorinated monomers, which comprise a shell wherein a large amount of hydrophobic fluorinated monomers are included and a core wherein no fluorinated monomers are included.

Preparation of fluorinated core-shell particles with water and oil repellency

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Daejeon, South Korea

Jong-Wook Ha