Aluminum cleaning and brightening composition and method of manu

Details Aluminum cleaning and brightening composition and method of manu Aluminum cleaning and brightening composition and method of manu

1989-12-22

1990-11-13

Powell, William A.

Compositions

Etching or brightening compositions

Inorganic acid containing

134 3, 134 40, 156655, 156903, 252 794, 252142, C09K 1306, C11D 708, C23G 102, B44C 122

Patent

active

049700146

ABSTRACT:
An acidic solution for use as an aluminum cleaning and brightening composition includes an aqueous solution of from about 1-15 weight percent hydrofluoric acid, about 1-5 weight percent sulfuric acid, and about 1-5 weight percent phosphoric acid. In addition, approximately 83-97 weight percent of an aqueous hydrochloric acid-based composition is included, which composition has a pH of less than about 1.0 yet is substantially non-reactive with compounds having low oxidative states, including human skin tissue.

REFERENCES:
patent: 3448055 (1969-06-01), Mickelson et al.
patent: 3969135 (1976-07-01), King et al.
patent: 4181622 (1980-01-01), Gavin
patent: 4199469 (1980-04-01), Walzer
patent: 4250048 (1981-02-01), Leveskis
patent: 4370173 (1983-01-01), Dollman
patent: 4477364 (1984-10-01), Garcia

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