PRESSURE-SENSITIVE ADHESIVE COMPOSITION

PURPOSE:To provide a pressure-sensitive adhesive compsn. which exhibits excellent characteristics by the crosslinking with ultraviolet light or electron beam irradiation, by incorporating an oligomer capable of being radical-crosslinked by irradiation with ultraviolet light or electron beams, in an...

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Bibliographische Detailangaben
Hauptverfasser:	NOMURA YOUICHI, MIKI YOSHIO, OONISHI HIROHITO, UEMURA TAKEMASA, NANZAKI YOSHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DYES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	PURPOSE:To provide a pressure-sensitive adhesive compsn. which exhibits excellent characteristics by the crosslinking with ultraviolet light or electron beam irradiation, by incorporating an oligomer capable of being radical-crosslinked by irradiation with ultraviolet light or electron beams, in an alkyl (meth)acrylate copolymer. CONSTITUTION:1-50pts.wt. oligomer having an MW of 1,000-20,000 and at least two unsaturated bonds per molecule, which can be radical-crosslinked by irradiation with ultraviolet light or electron beams, and 0-10pts.wt. photosensitizer are blended with 100pts.wt. copolymer having an MW of 100,000-600,000 and mainly composed of an alkyl acrylate or methacrylate. When the resulting pressure-sensitive adhesive compsn. is radical-crosslinked by irradiation with ultraviolet light or electron beams, it exhibits the optimum viscoelastic properties for displaying good bonding properties such that initial modulus is 0.5- 20kg/cm in a stress-strain curve under tension at a pulling rate of 50mm./min.