Patent ID: 7217462

Claim:
A metal foil-clad laminate comprising: at least one polyimide layer made of a polyimide having repeating units represented by the following formula I: wherein R is a cyclohexyl group; Φ is a C 2 to C 39 divalent aliphatic, alicyclic or aromatic group, or a combination of these divalent groups, with the proviso that at least one group selected from the group consisting of —O—, —SO 2 —, —CO—, —CH 2 —, C(CH 3 ) 2 , —OSi(CH 3 ) 2 —, —C 2 H 4 O— and —S— intervenes in a main chain of Φ; at least one insulating substrate; and at least one metal foil layer.