ADHESIVE SHEET, OPTICAL FILM WITH ADHESIVE AND OPTICAL LAMINATE

• Main Authors: OTA YOSUKE, SOMA TAKASHI, LEE JINKOO
• Format: Patent
• Language: English; Japanese
• Published: 24.11.2016
• 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

PROBLEM TO BE SOLVED: To provide an adhesive composition having such properties that after the composition is applied into a sheet state to be used for an adhesive sheet to be suitably used for an optical film, the adhesive composition requires a short curing time and has excellent processability.SOLUTION: The adhesive composition comprises: an acrylic resin (A) which is a copolymer obtained from a monomer mixture containing a (meth)acrylate (A-1) represented by formula (I) by 75 to 99.9 wt.% and a (meth)acryl monomer (A-2) having a carboxyl group by 0.1 to 5 wt.%; a crosslinking agent (B) comprising an isocyanate compound having an aromatic ring and at least two isocyanate groups in the molecule; and a carboxyl group-containing (meth)acrylate monomer (C) represented by formula (II).SELECTED DRAWING: None 【課題】光学フィルムに好適に用いられる粘着剤シートに用いるシート状に塗工後、養生時間が短く、加工性に優れる粘着剤組成物の提供。【解決手段】式（Ｉ）の（メタ）アクリル酸エステル（Ａ−１）７５〜９９.９重量％及びカルボキシル基を有する（メタ）アクリル系単量体（Ａ−２）０.１〜５重量％を含む単量体混合物から得られる共重合体であるアクリル樹脂（Ａ）、分子内に芳香環及び少なくとも２個のイソシアナト基を有するイソシアネート化合物からなる架橋剤（Ｂ）、並びに式（II）のカルボキシル基含有（メタ）アクリル酸エステル単量体（Ｃ）を含有する粘着剤組成物。【選択図】なし