PRESSURE-SENSITIVE ADHESIVE SHEET FOR APPLICATION TO VEHICLE COATING FILM

Disclosed is a pressure-sensitive adhesive sheet to be applied to a surface-conditioner-bearing surface of a vehicle coating. The sheet includes an acrylic pressure-sensitive adhesive layer (Y) as a pressure-sensitive adhesive layer to be in contact with the surface of the vehicle coating. The layer...

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Bibliographische Detailangaben
Hauptverfasser: OKAMOTO, MASAYUKI, UESUGI, MASANORI, SHIRAI, MITSUYOSHI, KONDOU, TAKASHI, NIWA, MASAHITO
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:Disclosed is a pressure-sensitive adhesive sheet to be applied to a surface-conditioner-bearing surface of a vehicle coating. The sheet includes an acrylic pressure-sensitive adhesive layer (Y) as a pressure-sensitive adhesive layer to be in contact with the surface of the vehicle coating. The layer (Y) has been polymerized from an acrylic pressure-sensitive adhesive composition through the application of active energy rays, the composition includes a vinyl monomer mainly containing an alkyl (meth)acrylate (a1) whose alkyl moiety having 2 to 14 carbon atoms, or a prepolymer thereof (a); an active-energy-ray-activatable polymerization initiator (b); a multifunctional (meth)acrylate (c); and a (meth)acrylate oligomer (d) having a weight-average molecular weight of 1000 to 30000 and containing 1 to 50 parts by weight of a rosin-modified (meth)acrylate (d1) per 100 parts by weight of total monomer components. The pressure-sensitive adhesive sheet exhibits high bond strengths even to surface-conditioner-bearing surfaces of automotive coatings without being reduced in bond strength by the surface conditioner.