Patent ID: 8128755
Filing Date: 2012-03-06
Classification: C11D,C23F,C23G

Abstract:
1. A method of cleaning equipment parts used in the photovoltaic or semiconductor industry, the method comprising the steps: contacting a surface of the equipment parts contaminated with a metallic compound with a cleaning solvent consisting of: a diluent selected from the group consisting of acetonitrile, acetone, and tetrahydrofuran, an accelerator, wherein the accelerator is a tertiary amine and a diketone compound having the formula R1-CO—CHR2-CO—R3, wherein R1, R2, and R3 are independently selected from the group consisting of hydrogen, an alkyl group, and an oxygen-substituted alkyl group; and removing the cleaning solvent to remove the metallic compound from the surface of the equipment parts.