PREPREG, METAL FOIL CLAD LAMINATED PLATE AND PRINTED WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To provide a printed wiring board that is halogen-free and gives a good hole shape in the processing by a carbon dioxide laser, and provide a prepreg and a metal foil clad laminated plate used as the materials therefor. SOLUTION: The prepreg is formed by impregnating or coating a substrate with a thermosetting resin composition which contains boehmite as an inorganic filler and does not contain a metal hydroxide other than boehmite and a halogenated compound, and drying it. COPYRIGHT: (C)2008,JPO&INPIT