Compositions – Etching or brightening compositions – Inorganic acid containing
Patent
1974-02-25
1976-05-18
Powell, William A.
Compositions
Etching or brightening compositions
Inorganic acid containing
204 34, 2041291, 427309, C09K 1306
Patent
active
039576698
ABSTRACT:
Disclosed is a method and composition useful for etching steel prior to metal plating which can be followed by enamelling. The etching composition contains sodium benzene sulphinate and an acid and promotes adhesion of metal and enamel coatings applied over the etched surface.
REFERENCES:
patent: 3349037 (1967-10-01), Peterson
patent: 3438901 (1969-04-01), Vassileff
patent: 3594288 (1971-07-01), Reinert
patent: 3725218 (1973-04-01), Friedel et al.
Stevenson John Stuart
Tulsi Surindar Singh
Claeboe Bertram F.
Kluegel Arthur E.
Mueller Richard P.
Oxy Metal Finishing (Great Britain) Ltd.
Powell William A.
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