Aluminium polishing compositions

C - Chemistry – Metallurgy – 09 – G

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6/8

C09G 1/04 (2006.01) C23F 3/02 (2006.01)

Patent

CA 1061956

S P E C I F I C A T I O N ALUMINIUM POLISHING COMPOSITIONS A B S T R A C T Aluminium polishing solutions containing phosphoric, nitric and sulphuric acids provide etched finishes If the proportion of sulphuric acid is increased. The invention inhibits such etching by addition to the bath of an aromatic ring compound, in which at least 2 hetero atoms are conjugated with the ring such as benztriazole.

264634

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