Patent ID: 6740629
Filing Date: 2004-05-25
Classification: C11D

Abstract:
A polishing pad washing composition, which comprises at least one component (A) selected from the group consisting of ammonia, potassium hydroxide, trimethyl-2-hydroxyethylammonium hydroxide, methyltrihydroxyethylammonium hydroxide, and dimethyldihydroxyethylammonium hydroxide for rendering water-soluble a water-insoluble compound containing a metal atom or an ion thereof and at least one component (B) selected from the group consisting of glycine, alanine, cysteine, amidosulfuric acid, lactic acid, citric acid, tartaric acid, malic acid, malonic acid, oxalic acid, succinic acid, fumaric acid and maleic acid for forming a water-soluble complex with said compound containing a metal atom.