HEAT-SENSITIVE AND PRESSURE-SENSITIVE ADHESIVE SHEET

摘要

A heat-sensitive adhesive sheet comprising a substrate having formed thereon an adhesive layer comprising a polymer composition (C) which comprises the following aqueous emulsion (A) and copolymer (B), wherein an adhesive force determined by the 180 DEG peeling test method as specified in JIS Z 0237 at a temperature of 25 DEG C is 10 g/25 mm or less: Aqueous emulsion (A): An aqueous emulsion containing an alkyl (meth)acrylate-based polymer (a) having a glass transition temperature of -10 DEG C or below, which is obtained by emulsion-polymerizing radically polymerizable monomers containing as the main component an alkyl (meth)acrylate; and Copolymer (B): A water-soluble or water-dispersible copolymer (B) having a glass transition temperature of 20 DEG C or above, which is a copolymer obtained by copolymerizing an alpha , beta -ethylenically unsaturated carboxylic acid with other radically polymerizable monomers, wherein a part or the entire amount of carboxyl groups in the copolymer is neutralized with a base having a boiling point of 110 DEG C or below.