SURFACE PROTECTION FILM

To provide a surface that can satisfy all required performances at the same time: (1) balancing of adhesive strength at a low-speed peeling region and a high-speed peeling region, (2) prevention of occurrence of adhesive residue, (3) excellent anti-static performance, and (4) rework performance.SOLU...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NAGAKURA TAKESHI, SHIMAGUCHI RYUSUKE
Format: Patent
Sprache:eng ; jpn
Schlagworte:
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Beschreibung
Zusammenfassung:To provide a surface that can satisfy all required performances at the same time: (1) balancing of adhesive strength at a low-speed peeling region and a high-speed peeling region, (2) prevention of occurrence of adhesive residue, (3) excellent anti-static performance, and (4) rework performance.SOLUTION: Adhesive strength of an adhesive layer is 0.05-0.1 N/25 mm in a low-speed peeling region and 1.0 N/25 mm or less in a high-speed peeling region, the adhesive layer being obtained by crosslinking an adhesive composition comprising: an acrylic copolymer obtained by copolymerizing (A) a (meth)acrylic acid ester monomer having a C4-C10 alkyl group, (B) a copolymerizable monomer having a hydroxyl group, and (C) a copolymerizable monomer having a carboxyl group; (D) a tri- or more functional isocyanate compound; (E) a crosslinking retarder of a keto-enol tautomeric compound; (F) a crosslinking catalyst; (G) an antistatic agent; and (H) a polyether modified siloxane compound having an HLB value of 7-12.SELECTED DRAWING: None 【課題】(1)低速度剥離領域及び高速度剥離領域においての粘着力のバランスを取ること、(2)糊残りの発生防止、(3)優れた帯電防止性能、及び(4)リワーク性能の全ての要求性能を、同時に満たすことが可能な表面保護フィルムを提供する。【解決手段】(A)アルキル基の炭素数がC4~C10の(メタ)アクリル酸エステルモノマーと、(B)水酸基を含有する共重合可能なモノマーと、(C)カルボキシル基を含有する共重合可能なモノマーと、を共重合させたアクリル共重合体と、(D)3官能以上のイソシアネート化合物、(E)ケトエノール互変異性化合物の架橋遅延剤、(F)架橋触媒、(G)帯電防止剤、(H)HLB値が7~12であるポリエーテル変性シロキサン化合物を含有してなる粘着剤組成物を架橋させた粘着剤層の粘着力が、低速度剥離領域で0.05~0.1N/25mm、高速度剥離領域で1.0N/25mm以下である。【選択図】なし