Tannin treatment of aluminum with a fluoride cleaner

Details Tannin treatment of aluminum with a fluoride cleaner Tannin treatment of aluminum with a fluoride cleaner

1976-02-09

1978-09-05

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 627, C23F 700, C23F 714

Patent

active

041117220

ABSTRACT:
Disclosed is a process for cleaning and treating an aluminum surface to improve the corrosion resistance and paint receptivity of the surface. The treating composition is an aqueous vegetable tannin composition, and the cleaning composition is an aqueous acidic fluoride containing cleaner.

REFERENCES:
patent: 516238 (1894-03-01), Strecker
patent: 2146838 (1939-02-01), Newsome et al.
patent: 2146840 (1939-02-01), Newsome et al.
patent: 2502441 (1950-04-01), Dodd
patent: 2851385 (1958-09-01), Spruance, Jr. et al.
patent: 2854368 (1958-09-01), Shreir
patent: 3331710 (1967-07-01), Lodeesen et al.
patent: 3448055 (1969-06-01), Mickelson et al.

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