OPTICALLY CLEAR ADHESIVE AND OPTICAL LAMINATE

• Main Authors: AMARI SHINGO, KINOSHITA YASUHIRO, SUWA TOSHIHIRO, NOZAKI YUSUKE, TING CHUN YI, NAKAJIMA SHINYA, NAKADA AYA, SUZUKI SHUNSUKE
• Format: Patent
• Language: English; Korean
• Published: 08.05.2017
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; PERFORMING OPERATIONS; POLISHES; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

문제점: 접착 강도와 응집 강도의 뛰어난 균형뿐만 아니라 뛰어난 광학 특징을 갖는 높은 유전상수를 갖는 광학적으로 투명한 접착제, 및 이를 포함하는 광학 라미네이트를 제공하고자 한다. 해결책: 본 발명의 일 실시 형태의 광학적으로 투명한 접착제는 하이드록실 기-함유 단량체 및 일작용성 알킬 (메트)아크릴레이트 0.09 질량% 이상 및 50 질량% 미만을 함유하는 아크릴 단량체 조성물의 중합체를 포함하고, 이때 접착제 100 g 중 OH의 몰 수는 0.30 이상 및 0.90 이하이다. Problem: To provide an optically clear adhesive with a high dielectric constant having an excellent balance of adhesive strength and cohesive strength as well as excellent optical characteristics, and an optical laminate containing the same. Solution: The optically clear adhesive of an embodiment of the present disclosure comprises a polymer of an acrylic monomer composition containing a hydroxyl group-containing monomer and at least 0.09 mass % and less than 50 mass % of a monofunctional alkyl (meth)acrylate, wherein the number of moles of OH in 100 g of the adhesive is at least 0.3 and at most 0.90.