| 摘要 |
PROBLEM TO BE SOLVED: To obtain an adhesive sheet, using an acrylic pressuresensitive flame- retardant adhesive having excellent adhesion performance such as adhesivity and high-temperature retainability of the adhesive force and self-extinguishing performance to instantaneously extinguish the fire, i.e., flame-retardancy. SOLUTION: This pressure-sensitive flame-retardant adhesive is composed of a photopolymerizable composition containing (a) 100 pts.wt. of a monomer (or its oligomer) consisting of 70-100wt.% of an alkyl (meth)acrylate having a carbon number of the alkyl group of 2-14 on an average and 30-0wt.% of a monoethylenic unsaturated monomer copolymerizable with the acrylate monomer, (b) 0.02-5 pts.wt. of a polyfunctional (meth)acrylate as a cross-linking agent, (c) 0.01-5 pts.wt. of a photopolymerization initiator and (d) 10-180 pts.wt. of a flame-retardant having a melting point of >=60 deg.C. The adhesive is applied to one or both faces of a substrate to obtain an adhesive sheet. |
