Pressure-sensitive adhesive sheet

The invention provides an adhesive sheet comprising a surface stock and an adhesive layer, the adhesive layer containing a copolymer, the copolymer comprising, based on the copolymer; (a) 5 to 40% by weight of at least one member selected from a carboxylic acid-modified rosin ester monomer and a ros...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KENJI SUZUKI, HIROYUKI OHHASHI, AKIRA KUNIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES IMPREGNATING OR COATING OF PAPER 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 PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING POLISHES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The invention provides an adhesive sheet comprising a surface stock and an adhesive layer, the adhesive layer containing a copolymer, the copolymer comprising, based on the copolymer; (a) 5 to 40% by weight of at least one member selected from a carboxylic acid-modified rosin ester monomer and a rosin ester monomer, and if desired, (b) 5 to 40% by weight of a (poly)ethylene glycol (meth)acrylate monomer, (c) 30 to 60% by weight of a (meth)acrylic acid C4-18 alkyl ester monomer, and if desired, (d) 20% by weight or less of an ethylenically unsaturated carboxylic acid-containing monomer, and (e) 20% by weight or less of another monomer which is copolymerizable with components (a), (b) and (c) and component (d) to be used when required. When the adhesive containing the copolymer comprising component (d) and a crosslinking agent, the adhesive sheet has removability. These adhesive sheets of the invention can be readily disintegrated without being adversely affected by the adhesive when the adhesive sheets are made into recycled pulp.