Process for sealing anodic oxidation layers on aluminium surface

Details Process for sealing anodic oxidation layers on aluminium surface Process for sealing anodic oxidation layers on aluminium surface

1976-12-14

1978-04-11

Kendall, Ralph S.

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

148 616, 204 38A, C23D 1124

Patent

active

040840140

ABSTRACT:
This invention relates to a process for sealing alumina layers formed on the surface of aluminum and its alloys by anodic oxidation, and to the composition for effecting such sealing. The process, which is preferably carried out at room temperatures for purposes of economy, comprises contacting said layer with an aqueous composition which includes phosphate ions, trivalent chromium, and an emulsified organic resin.

REFERENCES:
patent: 2562117 (1951-07-01), Osdal
patent: 2777785 (1957-01-01), Schuster et al.
patent: 3094435 (1963-06-01), Schuster et al.
patent: 3094441 (1963-06-01), Curtin et al.
patent: 3175964 (1965-03-01), Watanabe et al.
patent: 3346522 (1967-10-01), Schuster et al.

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