Aluminium polishing compositions

Details Aluminium polishing compositions Aluminium polishing compositions

1976-10-18

1978-09-26

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Polishes

148 617, 156635, 156666, 156903, 252 794, C09K 1306

Patent

active

041166990

ABSTRACT:
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.

REFERENCES:
patent: 2694001 (1954-11-01), Hayes et al.
patent: 3425881 (1969-02-01), Cohn
patent: 3876371 (1975-04-01), Costain et al.
Cotton et al., "Benzotriazole and Related Compounds as Corrosion Inhibitors for Copper," Brit. Corr. Jour., vol. 2, 1967, pp. 1-5.

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