Chemistry: electrical and wave energy – Processes and products
Patent
1975-12-18
1977-02-22
Edmundson, F.C.
Chemistry: electrical and wave energy
Processes and products
204 28, 204 56R, C25D 908
Patent
active
040090850
ABSTRACT:
This invention relates to novel lubricating compositions and to a process for treating metal sheet or strip stock to impart lubricity and abrasion resistance thereto which comprises electrodepositing a lubricating film containing both trivalent chromium oxide and water soluble surfactant from an aqueous bath composition containing hexavalent chromium and at least one water soluble surfactant which comprises passing current from an anode to a cathode through said aqueous bath composition for a time period sufficient to deposit a lubricant-containing trivalent chromium oxide film upon said cathode.
REFERENCES:
patent: 2956935 (1960-10-01), Passel
patent: 3489662 (1970-01-01), Merker et al.
patent: 3703449 (1972-11-01), Farr et al.
Auber Robert P.
Edmundson F.C.
M & T Chemicals Inc.
Spector Robert
Wheeless Kenneth G.
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