Abstract: In a first aspect, a multilayer film includes a first outer layer including a first thermoplastic polyimide, a core layer including a polyimide, and a second outer layer including a second thermoplastic polyimide. The polyimide of the core layer includes a first aromatic dianhydride including 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and a first aromatic diamine including p-phenylenediamine. The multilayer film has a total thickness in a range of from 5 to 150 ?m. A thickness of the core layer is in a range of from 35 to 73% of the total thickness of the multilayer film. A minimum peel strength for at least one of the first and second outer layers, when adhered to copper foil and tested following ASTM method IPC-TM-650, method No. 2.4.9B, is greater than 0.9 kgf/cm (0.88 N/mm). In a second aspect, a metal-clad laminate includes the multilayer film of the first aspect and a first metal layer adhered to an outer surface of the first outer layer of the multilayer film.

Abstract: In a first aspect, a multilayer film includes a first outer layer including a first thermoplastic polyimide, a core layer including a polyimide, and a second outer layer including a second thermoplastic polyimide. The polyimide of the core layer includes a first aromatic dianhydride including 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and a first aromatic diamine including p-phenylenediamine. The multilayer film has a total thickness in a range of from 5 to 150 ?m. A thickness of the core layer is in a range of from 35 to 73% of the total thickness of the multilayer film. A minimum peel strength for at least one of the first and second outer layers, when adhered to copper foil and tested following ASTM method IPC-TM-650, method No. 2.4.9B, is greater than 0.9 kgf/cm (0.88 N/mm). In a second aspect, a metal-clad laminate includes the multilayer film of the first aspect and a first metal layer adhered to an outer surface of the first outer layer of the multilayer film.

Abstract: A photographic, silver halide element that can be dried under rapid conditions during coating without deleterious effects on fog, kinks and other surface conditions, is described. This process can function with the addition of a small amount of a high boiling, aromatic alcohol to the emulsion prior to coating. Further improvements are noted with the addition of small amounts of a humectant and a plasticizer. The films resulting from this novel process can be handled without problems in the modern, automatic changing devices, for example.