Patent ID: 6372113
Filing Date: 2002-04-16
Classification: C25D,H05K,Y10S,Y10T

Abstract:
A process for producing a treated copper foil, which comprises:(a) providing a base copper foil made by electrodepositing a copper foil on a rotating drum cathode to produce a first copper base foil having a shiny drum side and an electrolyte side with a matte surface having a first surface roughness; and (b) electrodepositing on the electrolyte side of the base foil a copper micro-rough layer under electrodeposition conditions effective to electrodeposit a first copper micro-rough layer having a surface roughness which is different from the roughness of matte surface and which has a peak count greater than a peak count of the matte surface; wherein the electrodeposition conditions include the use of a copper sulfate/sulfuric acid electrolyte containing a minor amount of each of poly(propyleneglycol-b-ethylene glycol-b-propylene glycol)bis(2-aminopropyl ether) and hydroxyethyl cellulose.