| abstract |
(57) [Problem] To provide a non-halogen flame-retardant transparent sheet having transparency and generating no harmful gas such as halogen-based gas. SOLUTION: A glass cloth fiber sheet having a light transmittance is composed of an aromatic acrylate prepolymer, a urethane acryl oligomer, an acrylate having an isocyanate group, a flame retardant auxiliary comprising a phosphorus-containing compound, and a photopolymerization initiator. A non-halogen flame-retardant transparent sheet obtained by impregnating a photo-polymerizable flame-retardant resin composition and photo-curing the photo-polymerizable flame-retardant resin composition by light irradiation. |