Dissolution of metals utilizing a H.sub.2 O.sub.2 -sulfuric acid

Details Dissolution of metals utilizing a H.sub.2 O.sub.2 -sulfuric acid Dissolution of metals utilizing a H.sub.2 O.sub.2 -sulfuric acid

1977-11-08

1979-06-19

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156664, 252 794, 252186, 423272, C09K 1306, C23F 100

Patent

active

041585933

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 a secondary or tertiary alcohol.

REFERENCES:
patent: 3373114 (1968-03-01), Grunwald
patent: 3463733 (1969-08-01), Achenbach
patent: 3556883 (1971-01-01), Naito et al.
patent: 3597290 (1971-08-01), Naito
patent: 3773577 (1973-11-01), Shibasaki et al.
patent: 3945865 (1976-03-01), Kamperman
patent: 4040863 (1977-08-01), Kitamura
patent: 4086176 (1978-04-01), Ericson et al.
patent: 4110237 (1978-08-01), Matsumoto et al.
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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