| abstract |
PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive tape having high flame retardancy, high shear strength and high peel strength, and a flame-retardant photopolymerizable composition used for forming the same. SOLUTION: One or more (meth) acrylic acid ester monomers (a) 50 to 98 selected from (meth) acrylic acid esters having an alkyl group having 1 to 12 carbon atoms. A monomer having a polar group and containing 50 to 2% by weight of at least one monomer (b) selected from monomers copolymerizable with the (meth) acrylate monomer (a) With respect to 100 parts by weight of the mixture, the (meth) 1 to 20 parts by weight of a compound (c) copolymerizable with the acrylate monomer (a) and the monomer (b) and having a phosphorus element in the molecule, and a photopolymerization initiator (d) 0.01 to Flame-retardant photopolymerizable composition containing 5 parts by weight and 3 to 70 parts by weight of a mixture (e) consisting of three components of ammonium polyphosphate, a nitrogen-containing compound represented by the following structural formula (I), and a metal oxide: . |