Sk Innovation Co., Ltd.

Sk Ie Technology Co., Ltd.

Korea Aerospace Research Institute

Sk Global Chemical Co., Ltd.

Sk Geo Centric Co., Ltd.

Jin Hyung Park

Sang Yoon Park

Hyeon Jeong Kim

Tae Sug Jang

Hyo Shin Kwak

Hyun Kyu Cho

Hye Ri Kim

Seung Min Jeon

Yoo Seock Hwang

Joo Hyun Lee

Min Sang Park

Jin Su Park

Jong Chan Kim

Dae Won Chung

Hyun Su Lim

The present invention relates to a diamine, and a polymer and film produced using the same. Specifically, the diamine may be significantly effectively used as a monomer for producing a polyimide-based film that is colorless and transparent and has improved mechanical strength.

Diamine, polymer and film produced using the same

An embodiment relates to a diamine compound, a polymer including a structural unit derived therefrom, a composition for forming a polyimide film including the polymer, and a polyimide film prepared by using the composition. Specifically, the diamine compound according to an embodiment may be very usefully used as a monomer for preparing a polyimide film that is colorless and has an improved mechanical strength.

Diamine compound, polyimide precursor and polyimide prepared by using the same, composition for forming polyimide film and polyimide film prepared by using the same, and uses thereof

Provided are a polyamic acid resin derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride, and a polyamideimide film including polyamideimide derived from an aromatic diamine, an aromatic dianhydride, a cycloaliphatic dianhydride and an aromatic diacid dichloride.

Polyamic acid resin and polyamideimide film

The present invention relates to a polyimide-based film, a window cover film including the polyimide-based film, and a display panel including the polyimide-based film. More specifically, the present invention relates to a polyimide-based film of which a modulus measured according to ASTM D882 is 5 GPa or more and a rate of change of the modulus, after the polyimide-based film is maintained under a high-temperature and high-humidity condition of 60° C. and 90% RH for 500 hours, is 10% or less.

Polyimide film and flexible display panel including the same

Provided are a transparent film, an optical material including the same, and a display device including the same.

Transparent film, optical material comprising the same, and display device comprising the same

A system and a method for determining a satellite image loss and a computer-readable recording medium therefor are provided. The satellite image loss determination system includes a data receiving unit configured to receive packet data including satellite image data, time information, and a flag value, and angle data of a scan mirror that generates the satellite image data; a data comparing unit configured to compare the angle data received by the data receiving unit with angle data of the scan mirror previously determined in correspondence with the packet data; and an image loss determining unit configured to determine whether a loss has occurred in a satellite image generated from the satellite image data in consideration of a result of comparison of the data comparing unit.

System and method for determining satellite image loss and computer-readable recording medium therefor

Provided are a polyamic acid resin, a polyamideimide film, and a method for preparing the same. More specifically, provided are a polyamic acid resin derived from a combination of specific components, and a polyamideimide film capable of implementing high modulus and excellent optical properties.

Provided are a polyamic acid resin, a polyamideimide film, and a method for preparing the same. More specifically, provided are a polyamic acid resin derived from a combination of specific components, a polyamideimide film capable of implementing high modulus and excellent optical properties while implementing excellent mechanical properties, heat properties, and electrical properties, and a method for preparing the same.

Polyamic acid resin, polyamideimide film, and method for preparing the same

Provided are a polyamic acid composition, a polyamideimide film thereof, and a method for preparing the polyamideimide film. More specifically, provided are a polyamideimide film capable of implementing excellent optical properties in addition to inherent physical properties of polyimide by using a polyamic acid composition including a combination of specific components, and a method for preparing the polyamideimide film.

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Daejeon, South Korea

Jin Hyung Park