Patent ID: 11873564
Assignee: HUTCHINSON TECHNOLOGY INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC C  G  H | IPC C  G  H

Claim 0:
1. An etch chemistry solution for treating metallic surfaces, the etch chemistry solution consisting of:
an oxidizing agent comprising one or more of a peroxide, a persulfate compound, and combinations thereof;
one or more of a short-chained polyethylene polymer glycol and a short-chained polyethylene copolymer glycol, wherein the short-chained polyethylene polymer glycol is xylonic acid, threonic acid, or D-glucose peracetate;
a non-oxidizing/reducing acid comprising one or more of sulfuric acid, acetic acid, formic acid, lactic acid, phosphoric acid or combinations thereof;
a metal activator comprising one or more of copper, cobalt, zinc, nickel, iron, manganese or alloys thereof; and
optionally a surfactant.