Patent ID: 11963308
Assignee: ATOTECH DEUTSCHLAND GMBH & CO. KG
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 14:
15. An acidic aqueous non-etching protector solution comprising
(a) one or more than one amino azole,
(b) one or more than one organic acid and/or salts thereof,
(c) one or more than one peroxide in a total amount of 0.4 wt-% or less, based on the total weight of the protector solution, and
(d) inorganic acids in a total amount of 0 to 0.01 wt-%, based on the total weight of the protector solution,
wherein in the acidic aqueous non-etching protector solution the molar ratio of all peroxides to all amino azoles is 1 or less, and
wherein the protector solution is substantially free of chloride and fluoride ions.