Sk Innovation Co., Ltd.

Sk Ie Technology Co., Ltd.

Sk Global Chemical Co., Ltd.

Sk Geo Centric Co., Ltd.

Tae Sug Jang

Jong Nam Ahn

Jin Su Park

Byoung Sun Ko

Sang Yoon Park

Ho Chul Yoon

Hyeon Jeong Kim

Jin Hyung Park

Keon Hyeok Ko

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

Provided are a polyimide-based film having excellent visibility, a film for a cover window, and a display device including the same.

Polyimide-based film, film for cover window, and display device including the same

Provided is a hard coating film. The hard coating film includes a base layer and a hard coating layer disposed on the base layer and having a pencil hardness of 4H or higher. A surface elongation at break of the hard coating film falls within a predetermined range, as measured by a certain method. The hard coating film shows excellent durability under high-temperature/high-humidity conditions, has no microcracks formed after repeated folding, and shows excellent pencil hardness.

Hard coating film and flexible display panel including the same

Provided is a hard coating film in which a hard coating layer having a water contact angle of 90&#xb0; or less, a high refractive index layer, and a low refractive index layer are laminated on a substrate, the film having suppressed curling, and excellent hardness and antireflection performance.

Antireflection hard coating film and preparation method thereof

Provided is a hard coating film in which a hard coating layer having a water contact angle of 90&#xb0; or less, a conductive layer, and a low refractive index layer are laminated on a substrate, the film having excellent hardness, anti-curling property, antireflection performance, antifouling performance, and antistatic performance.

Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by a specific chemical formula, a photoinitiator, a fluorine-substituted (meth)acrylate compound, and silica nanoparticles surface-modified with a fluorine compound, and forms a hard coating layer having excellent hardness and antifouling property and suppressing curling.

Composition for forming hard coating layer, preparation method of hard coating film, and hard coating film prepared using the same

Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by Chemical Formula 2, and a photoinitiator to decrease curls and increase hardness of the hard coating film.

Composition for forming hard coating layer, method of preparing hard coating film and hard coating film prepared by using the same

Provided is a hard coating film including a polyamideimide substrate layer and a hard coating layer, each of which has a predetermined refractive index, with a difference in the refractive index between those layers being 0.05. The substrate layer has a tensile modulus of 3 to 7 GPa, at a thickness of 80 &#x3bc;m, as measured according to ASTM D111. The present invention relates to a hard coating film having improved mechanical and optical properties.

Hard coating film and preparation method thereof

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.

Growing community of inventors

Daejeon, South Korea

Tae Sug Jang