THERMOSETTING RESIN COMPOSITION, PREPREG, LAMINATED SHEET, AND PRINTED CIRCUIT BOARD

摘要

PROBLEM TO BE SOLVED: To provide a thermosetting resin composition having black appearance, no decrease in insulation and reliability as a printed circuit board, and capable of appearance inspection by fluorescent light inspection type appearance inspector and suitable for manufacturing a laminated sheet, prepreg, laminated sheet, and printed circuit board. SOLUTION: This thermosetting resin composition contains a pyrazoline fluorescent dye as a fluorescent dye and an azo or disazo compound as a black dye.