| abstract |
A metal laminate comprising a metal layer and an insulating layer is provided. The insulating layer is disposed on the metal layer and directly contacts the metal layer. The insulating layer is made of a polyimide resin, and the polyimide resin is derived from at least two dianhydrides and at least two diamines. The dianhydride monomers are selected from the group consisting of p-phenylenebis (trimellitate anhydride), 4,4′-(hexafluoroisopropylidene)-diphthalic anhydride, 4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride) and the combination thereof. One of the diamine monomers is 2,2′-bis(trifluoromethyl)benzidine, and the other diamine monomers are selected from the group consisting of 2,2-bis[4-(4-aminophenoxy)phenyl, 1,3-bis(4-aminophenoxy)benzene, p-phenylenediamine, 4,4′-oxydianiline, 4,4′-methylenedianiline, 4,4′-diaminobenzanilide, 4,4′-diaminodiphenyl-sulfone, m-tolidine, 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane and the combination thereof. A molar ratio of the dianhydride monomers to the diamine monomers is between 0.85 and 1.15. |