Korea Research Institute of Chemical Technology

Cheil Industries Inc.

Jong Chan Won

Yong Seok Kim

Jae Heung Lee

Kil-Yeong Choi

Hyun Min Jung

Jin Young Park

Sang Sung Woo

Kil Yeong Choi

Young Taik Hong

So Hee Kim

No Kyun Park

Moon Young Jin

Byoung Gak Kim

Jinsoo Kim

Byoung Kwon Park

Kwang-Sup Lee

Mihye Yi

Yun Ho Kim

Kwang Suk Jang

Sang Yeol Choi

Sung Mi Yoo

Jae Won Ka

Soon-Ryoung Hur

Eun Sang Lee

In-Tae Lee

Youn S Don

The present invention relates to a composition for an insulator of a thin film transistor, an insulator and an organic thin film transistor comprising the same. The insulator of a thin film transistor prepared with the composition of the present invention displays an excellent permittivity along with a low surface energy, and the organic thin film transistor comprising the same displays an improved organic semiconductor morphology formed on the top surface of the insulator, so that it can bring the effect of reducing leakage current density, improving charge carrier mobility, and improving current on/off ratio.

Composition for insulator of thin film transistor, insulator and organic thin film transistor prepared thereby

The present invention relates to a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite comprising the same, and more specifically, a method for preparing polymer-nanoparticles having a core-shell structure by uniformly coating a polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and a polymer-nanoparticle composite including the same, wherein when forming a polymer coating layer on surfaces of particles that are not subjected to separate surface treatment, excessive polymers uncoated on nanoparticles are easily removed by adding to an ionic liquid or an apolar solvent so that the polymer coating layer is formed with a nanometer-scale uniform thickness and a dense coating density, thereby showing excellent dispersibility in a polymer matrix.

Method for preparing polymer-nanoparticles having core-shell structure by uniformly coating polymer on metal and inorganic particles, polymer-nanoparticles prepared thereby, and polymer-nanoparticle composite comprising same

The present invention relates to a method of preparing a microcapsule with a double-layered structure which comprises the steps of performing an interfacial polymerization of an amine-aldehyde prepolymer on droplets containing an inorganic metal precursor selected from carboxylate and alkoxide compounds, and hydrolyzing the including inorganic precursors for formation of inorganic inner layer. The method of the present invention can prepare a microcapsule with a double-layered structure of an inorganic inner layer and a polymer outer layer, which is effective for eluting and substituting a core material inside the capsule.

Preparation of microcapsule with double layered structure

Disclosed is a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer using cyclic oligomers, and more particularly, to a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer by preparing a cyclic ether sulfone oligomer and a cyclic imide or amide oligomer and subjecting the cyclic ether sulfone oligomer and the cyclic imide or amide oligomer to ring-opening copolymerization in the presence of an alkali metal fluoride catalyst.

Method for preparing a poly(ether sulfonimide or -amide) copolymer using cyclic oligomers

The present invention relates to aromatic polyether resins crosslinked with amic acid or imide side chain, and more particularly, to the aromatic polyether resin crosslinked by amic acid or imide side chain, which is produced by heat curing of amic acid, wherein introduction of imide groups to the basic backbone provides excellent chemical resistance as well as heat resistance and improves surface roughness when coated as a thin film so that it can be suitable for films and flexible display plate substrate.

Aromatic polyether resins crosslinked by amic acid or imide side chain

Reactive photo acid-generating agent and heat-resistant photoresist composition with polyamide precursor

This invention relates to melt processable copolymer of etherimideimide/etherimide herein-after identified as PEII/PEI copolymer of following structural formula(I). ##STR1## wherein, R and R' are independently selected from the groups of ##STR2## Ar and Ar' are independently selected from the groups of ##STR3## (wherein, R1 is H or C1-C6 alkyl group,

Melt processable etherimideimide/etherimide copolymer

The present invention relates to new polyetherimideimides having imideimide group with the following structural formula(I) and inherent viscosity of 0.27.about.0.71 dl/g, which can be made by effecting reaction between an aromatic bis(ether anhydride) and an organic diamine or an aromatic bis(nitro imideimide) and a metal salt of diol. ##STR1## Wherein, R is ##STR2##

Polyetherimideimides and a method for manufacturing them

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Daejeon, South Korea

Jong Chan Won