Composition For Hard Coating and Polyimide Substrate Including Cured Product Of The Same As A Hard Coating Layer

• Main Authors: AN, BYUNG JOON, AHN, SANG HYUN, YANG, PIL RYE, KIM, HANG GEUN, LEE, DONG HEE
• Format: Patent
• Language: English; Korean
• Published: 29.06.2018
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FILLING PASTES; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

The present invention relates to siloxane resins chemically bonded by compounds comprising an alkoxy silane and an alkoxy metal having an alicyclic epoxy group in a molecular structure; a resin composition for hard coating containing a dye having a maximum absorbance at 550 to 700 nm; and a polyimide substrate including cured products thereof as a hard coating layer on at least one surface of a polyimide film. According to the present invention, it is possible to provide the resin composition for hard coating which can significantly reduce yellowing properties while improving physical properties such as bending properties, surface hardness, scratch resistance and adhesion when applied to the polyimide substrate as the hard coating layer. 본 발명은 분자 구조내에 지환식 에폭시기를 갖는 알콕시 실란 및 알콕시 금속을 포함하는 화합물들에 의해 화학 결합된 실록산 수지; 및 550~700nm에서 최대 흡광도를 가지는 염료를 포함하는 하드 코팅용 수지 조성물 및 이의 경화물을 폴리이미드 필름의 적어도 일면에 하드 코팅층으로 포함하는 폴리이미드 기판에 관한 것이다.