THERMOSETTING RESIN COMPOSITION, PREPREG, LAMINATE BOARD AND PRINTED WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To provide a wiring board excellent in ultraviolet-absorbing properties and capable of simultaneous exposure of both surfaces. SOLUTION: This wiring board is prepared by forming a circuit on a copper clad laminate board obtained by using a prepreg obtained by impregnating a fiber substrate with a thermosetting resin composition, as a varnish, comprising as essential ingredients a thermosetting resin, a naphthalimide derivative represented by the formula and 4-methyl-7-diethylaminocoumarin followed by drying.