Etchant for removing metals from glass substrates

Details Etchant for removing metals from glass substrates Etchant for removing metals from glass substrates

1974-08-28

1976-06-01

Powell, William A.

Compositions

Etching or brightening compositions

Inorganic acid containing

156 7, 156 18, 252 794, C09K 1308

Patent

active

039607410

ABSTRACT:
Disclosed is an etchant for removing a metal, such as titanium, from a glass substrate without adversely attacking the glass. The etchant includes a relatively viscous coating agent that wets and coats and thus protects the glass but does not wet the metal thus permitting etching thereof. A nonionizing diluent can be included in the etchant to inhibit the etching rate if it is felt that the heat and turbulence that would otherwise be generated may be excessive and interfere with the action of the coating agent.

REFERENCES:
patent: 3556883 (1971-01-01), Naito et al.
patent: 3736197 (1973-05-01), Messerschmidt et al.
patent: 3749618 (1973-07-01), Fannin et al.
patent: 3767491 (1973-10-01), Chough
patent: 3813311 (1974-05-01), Beck et al.

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