Patent ID: 7758927
Filing Date: 2010-07-20
Classification: B05D,C08G,C23C,Y10T

Abstract:
1. A process for the simultaneous formation of a surface and a subsurface metallic layer in polymer films comprising: reacting an aromatic dianhydride with an aromatic diamine in a solvent to produce a polyamic acid solution; doping the polyamic acid solution with metallic ions to provide a doped solution; preparing a film from the doped solution; and then irradiating a first portion of the film with coherent light of a predetermined intensity and for a predetermined time sufficient to produce a subsurface metallic layer when the film is subsequently cured; and then curing the film to convert the doped solution to the corresponding polyimide and reduce the metallic ions to precipitate metallic particles within a cured film, wherein the cured film is characterized by a surface metallic layer, and along the first portion of the film the subsurface metallic layer spaced from the surface metallic layer by a first metal particle/polymeric layer intermediate the surface and subsurface metallic layers and a second metal particle/polymeric layer, said subsurface metallic layer located intermediate between the first and second metal particle/polymeric layers.