| abstract |
An object of the present invention is to provide an inexpensive metal foil laminate which has excellent adhesion, does not warp, has low water absorption and dielectric constant of an insulating layer, and is inexpensive even when a copper foil having little unevenness is used without using an adhesive. I do. A glycidyl ether group-containing methoxysilane partial condensate (2) obtained by a demethanol reaction between a polyamideimide resin (1) having a carboxyl group or an acid anhydride group at a molecular terminal and glycidol and a methoxysilane partial condensate. ), And a methoxysilyl group-containing silane-modified polyamide-imide resin (a) and an inorganic filler (b) -containing silane-modified polyamide-imide resin composition (A-1) are cast on a metal foil (B). Then, a metal foil laminate for a flexible substrate obtained by drying and curing is used. [Selection diagram] None |