Patent ID: 7935665
Filing Date: 2011-05-03
Classification: C11D,G03F,H01L

Abstract:
1. A non-corrosive cleaning composition consisting of: (a) water; (b) a combination of at least one tricarboxylic acid and at least one carboxylic acid, wherein said at least one carboxylic acid is selected from the group consisting of: acetic, propionic, butyric, valeric, trimethylacetic, isovaleric, succinic, methylsuccinic, glutaric, suberic, glycolic, 2-hydroxyisobutyric, 3-hydroxybutyric, malic, citramalic, tartaric, ethoxyacetic, tetrahydro-3-furoic, diglycolic, mercaptosuccinic, thiolactic, cyclohexylacetic, dicyclohexylacetic, and 1,1-cyclohexanediacetic, and said at least one tricarboxylic acid and said at least one carboxylic acid is present in a weight ratio of about 1:5 to about 5:1; and (c) at least one solvent selected from the group consisting of polyol compounds, glycol ethers, and any combinations thereof; and (d) optionally, at least one surfactant.