Patent ID: 8324143
Filing Date: 2012-12-04
Classification: C11D,G11B

Abstract:
1. A cleaning agent for electronic materials, consisting of: sulfamic acid (A), an anionic surfactant having at least one sulfonic acid group or a salt thereof in the molecule (B), a chelating agent (C), optionally, a hydrophilic solvent (D), optionally, a nonionic surfactant (E), and water as essential components, wherein pH at 25° C. is not more than 3.0, wherein a content of the sulfamic acid (A) is 5 to 90 weight %, a content of the anionic surfactant (B) is 0.1 to 50 weight %, and a content of the chelating agent (C) is 0.1 to 50 weight %, a content of the nonionic surfactant (E) is 0 to 10 weight %, based on a total weight of active ingredients of the cleaning agent.