Patent ID: 8747564
Filing Date: 2014-06-10
Classification: C11D,H01L

Abstract:
1. A residue-removing solution for removing residues after a dry process, comprising an amine salt of a monocarboxylic acid and/or a salt of a polycarboxylic acid that forms a 7- or more-membered ring chelate with copper, and water, the residue-removing solution being (A) or (B) described below: (A) an aqueous solution consisting of (1) a Brønsted acid whose pKa is at least 4.56 at 25° C., (2) an amine salt of a monocarboxylic acid, and/or (3) at least one member selected from the group consisting of an ammonium salt, an amine salt, and a quaternary ammonium salt of an aliphatic dicarboxylic acid that forms a 7- or more-membered ring chelate with copper, and (4) water, wherein the pH of the aqueous solution is equal to or less than the pKa of the monocarboxylic acid at 25° C.; is equal to or less than the pKa the pH of the aqueous solution (A) is 4 to 6, and the Brønsted acid is a monocarboxylic acid and/or a polycarboxylic acid; (B) an aqueous solution consisting of (5) an amine salt of a C (7) water, wherein the pH of the aqueous solution is equal to or greater than the pKa of the C the pH of the aqueous solution (B) is 8 or less.