PREPREG AND LAMINATED BOARD THEREFROM

摘要

PURPOSE:To provide prepreg and laminated board therefrom capable of produc ing multilayer printed boards having low dielectric constant with uniform dielec tric constant distribution. CONSTITUTION:The objective prepreg can be obtained by incorporating a thermosetting resin with fine hollow glass spheres having the ratio of the crust wall thickness to diameter of (1:6) to (1:11) followed by impregnating a base material with the resultant resin composition and then drying. The objective laminated board can be obtained by mutually laminating and molding several sheets of the prepregs.