Laminated printed circuits contg. polycyanurate resin - and epoxy resin insulating compsns., esp. as glass fibre prepregs

摘要

A laminated printed circuit plate, consisting of a number of superimposed printed circuit planes, is produced by insulating each layer with (A) a resin compsn. contg. a cyonacid ester resin, an epoxy resin with 2 oxirane rings, in amt. to give the required dielectric constant, and a catalyst or hardener, or (B) a prepeg. consisting of a glass fibre impregnated with compsn. Am or (C) a laminate prepd. by heating the prepreg. B under press. and heating a laminate of such plates under press. The laminate has properties, e.g. electrical and mechanical properties, and resistance to heat, chemicals and moisture, at least as good as those of laminates from epoxy-impregnated glass fibre fabrics.