ADHESIVE AGENT AND ADHESIVE SHEET
To provide an adhesive agent which has low initial adhesive force and excellent high-speed peeling resistance, and has low adhesive force after heat resistance and excellent heat-proof stain resistance after peeling due to no deterioration in removability even in a high-temperature environment for a...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
15.07.2021
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Subjects | |
Online Access | Get full text |
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Summary: | To provide an adhesive agent which has low initial adhesive force and excellent high-speed peeling resistance, and has low adhesive force after heat resistance and excellent heat-proof stain resistance after peeling due to no deterioration in removability even in a high-temperature environment for a long time, and no deterioration in staining property by volatile components contained in the adhesive agent.SOLUTION: An adhesive agent contains an acrylic copolymer (A), a hardening agent (B), a plasticizer (C) and an antioxidant (D). The acrylic copolymer (A) is a copolymer of a monomer mixture containing (meth)acrylic acid alkyl ester (a1) having an 8-10C branch alkyl group, and a monomer (a2) having a carboxyl group. A content of the plasticizer (C) is 1 pt.mass or more and 20 pts.mass or less based on 100 pts.mass of the acrylic copolymer (A), and the antioxidant (D) is a phenolic compound.SELECTED DRAWING: None
【課題】本発明が解決しようとする課題は、初期粘着力が低く、高速剥離耐性に優れるだけでなく、さらに長時間の高温環境下においても再剥離性の悪化、粘着剤に含まれる揮発成分による汚染性の悪化がないため、耐熱後の粘着力も低く、剥離後の耐熱汚染性にも優れる粘着剤を提供すること。【解決手段】アクリル系共重合体(A)、硬化剤(B)、可塑剤(C)、および酸化防止剤(D)を含み、前記アクリル系共重合体(A)は、炭素数8〜10の分岐アルキル基を有する(メタ)アクリル酸アルキルエステル(a1)、およびカルボキシル基を有するモノマー(a2)を含有するモノマー混合物の共重合体であり、前記可塑剤(C)の含有量は、前記アクリル系共重合体(A)100質量部に対し、1質量部以上20質量部以下であり、前記酸化防止剤(D)は、フェノール系化合物である、粘着剤により解決される。【選択図】 なし |
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Bibliography: | Application Number: JP20190233610 |