Tannin containing compositions

Details Tannin containing compositions Tannin containing compositions

1974-07-26

1976-08-17

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 615Z, 148 614R, C23F 708

Patent

active

039752143

ABSTRACT:
Disclosed is a process for applying a tannin containing post-treatment composition over zinc phosphate conversion coatings on metallic surfaces so as to provide an improved base for paint, lacquer, varnish, or similar organic finishes. Also disclosed are a process for the transport and application of the tannin composition and a process for preparing a metallic surface for electrodeposition painting.

REFERENCES:
patent: 870937 (1907-11-01), Coslett
patent: 1303627 (1919-05-01), Baines
patent: 2854368 (1958-09-01), Shreir
Cristi, S., Maren, Chem. Abstracts, vol. 71, 126055f, 1969.
Emery, Chem. Abstracts, vol. 65, 1966, 11873.
Translation of German Patent 1192487.

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