ADHESIVE, CURABLE ADHESIVE COMPOSITION, ADHESIVE SHEET, AND METHOD FOR PRODUCING THE SAME

• Main Authors: HIRANO KEISUKE, TAKARADA SHO, KAWATAKE FUMIKA, SHIMOKURI DAIKI, NIWA MICHIHITO, IKEMURA MIKA, NONAKA TAKAHIRO, HATANAKA TOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 08.08.2019
• 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; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

To provide an adhesive capable of achieving both low-temperature adhesiveness and high-temperature holding power, and an adhesive sheet using the adhesive.SOLUTION: The adhesive contains an acrylic base polymer. The acrylic base polymer contains an acrylic segment and a urethane segment. In the base polymer, the content of the urethane segment is 3-20 pts.wt. based on 100 pts.wt. of the acrylic segment. The adhesive sheet is obtained by applying an adhesive composition in the form of a layer and curing it as needed.SELECTED DRAWING: None 【課題】低温接着性と高温保持力とを両立可能な粘着剤、および当該粘着剤を用いた粘着シートを提供する。【解決手段】粘着剤は、アクリル系ベースポリマーを含有する。アクリル系ベースポリマーは、アクリル系セグメントおよびウレタン系セグメントを含む。ベースポリマーは、アクリル系セグメント１００重量部に対するウレタン系セグメントの含有量が３〜２０重量部である。粘着剤組成物を層状に塗布し、必要に応じて硬化することにより粘着シートが得られる。【選択図】なし