PREPREG, METAL FOIL-CLAD LAMINATE, AND PRINTECD WIRING BOARD

摘要

THERE ARE PROVIDED A PREPREG HAVING LOW WATER ABSORPTION, AND OF WHICH DETERIORATION IN INSULATION RESISTANCE OVER TIME IS REMARKABLY SUPPRESSED, AND FURTHER HAVING EXCELLENT HEAT RESISTANCE, A METAL FOIL-CLAD LAMINATE USING THE PREPREG, AND A PRINTED WIRING BOARD USING THE METAL FOIL-CLAD LAMINATE. A PREPREG OF THE PRESENT INVENTION IS OBTAINED BY IMPREGNATING OR COATING A BASE MATERIAL (D) WITH A RESIN COMPOSITION COMPRISING: A NAPHTHOL-MODIFIED DIMETHYLNAPHTHALENE FORMALDEHYDE RESIN (A); AN EPOXY RESIN (B) HAVING AN EPOXY EQUIVALENT OF 200 TO 400 G/EQ.; AND AN INORGANIC FILLER (C).