Dissolution of metals with a selenium catalyzed H.sub.2 O.sub.2

Details Dissolution of metals with a selenium catalyzed H.sub.2 O.sub.2 Dissolution of metals with a selenium catalyzed H.sub.2 O.sub.2

1977-11-08

1979-02-20

Massie, Jerome W.

Compositions

Etching or brightening compositions

Inorganic acid containing

156664, 156666, 252100, 252186, C09K 1306

Patent

active

041406460

ABSTRACT:
Clean etchings at high rates are obtained using a solution containing sulfuric acid, hydrogen peroxide, a catalytic amount of a selenium compound of a +4 oxidation state and t-butyl hydroperoxide.

REFERENCES:
patent: 3373114 (1968-03-01), Grunwald
patent: 3463733 (1969-08-01), Achenbach
patent: 3597290 (1971-08-01), Naito
patent: 3773577 (1973-11-01), Shibasaki et al.
patent: 3841905 (1974-10-01), Dixon
patent: 3945865 (1976-03-01), Kamperman
Naito et al., Chemical Abstracts, vol. 81, 1974, p. 31171.
Price, T. Per-Acids and Their Salts, Longmans, Green and Co., New York, N. Y. (1912) p. 9.

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