DOUBLE-SIDED ADHESIVE TAPE

• Main Authors: KIUE YUKI, NIWA MICHIHITO
• Format: Patent
• Language: English; Japanese
• Published: 05.09.2019
• 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 a novel double-sided adhesive tape having excellent impact resistance, preferably further having excellent oil resistance.SOLUTION: A double-sided adhesive tape 100 has a maximum value of a loss tangent tanδ of 1.5 or more, and a temperature providing the maximum value of -30°C to 0°C. It is preferably to have a thickness of 100 μm or more and a plurality of adhesive layers 10a, 10b, 10c. It is preferable to have an adhesive layer (A) formed from an adhesive composition (C-a) containing an acrylic polymer (P-a) obtained by polymerizing a monomer component (M-a) containing an alicyclic structure-containing acrylic monomer as an essential component as a base polymer.SELECTED DRAWING: Figure 1 【課題】優れた耐衝撃性を有し、好ましくは、さらに、優れた耐油性を有する、新規な両面粘着テープを提供する。【解決手段】本発明の両面粘着テープ１００は、損失正接ｔａｎδの極大値が１．５以上であり、該極大値を与える温度が−３０℃〜０℃である。厚みが１００μｍ以上であり、複数の粘着剤層１０ａ，１０ｂ，１０ｃを有することが好ましい。脂環式構造含有アクリル系単量体を必須成分として含有する単量体成分（Ｍ−ａ）を重合して得られるアクリル系ポリマー（Ｐ−ａ）をベースポリマーとして含む粘着剤組成物（Ｃ−ａ）から形成される粘着剤層（Ａ）を有することが好ましい。【選択図】図１