ADHESIVE SHEET, OPTICAL FILM WITH ADHESIVE, OPTICAL LAMINATE, AND METHOD OF MANUFACTURING ADHESIVE SHEET

• Main Authors: OTA YOSUKE, TAKEATSU RYU, LEE JINKOO
• Format: Patent
• Language: English
• Published: 09.09.2013
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PHYSICS; POLISHES; USE OF MATERIALS AS ADHESIVES

PROBLEM TO BE SOLVED: To provide an adhesive sheet provided with antistatic property and having high durability even in a severe environment assuming a vehicular application and the like when bonded to glass, as well as a method of manufacturing the same, the adhesive sheet being bonded to an optical film to form an optical film with adhesive, which can further be bonded to a glass substrate to form an optical laminate.SOLUTION: An adhesive sheet is formed of an adhesive composition including 100 pts.wt. acrylic resin (A) that is a copolymer obtained from a monomer mixture including 95-99.9 wt.% (meth)acrylic ester and 0.1-5 wt.% unsaturated monomer having a polar functional group, 0.01-5 pts.wt. crosslinker (B), 0.2-8 pts.wt. ionic compound (C) having an organic cation and a melting point between 25°C and 50°C, a silane compound (D) of which boiling point is 350°C or lower, and an organic solvent (E), wherein a weight ratio of silicon atom derived from the silane compound (D) with respect to the adhesive sheet is 160 mg/kg or higher.