Method and composition for coating aluminum

Details Method and composition for coating aluminum Method and composition for coating aluminum

1990-11-29

1992-06-30

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C23C 2236

Patent

active

051259893

ABSTRACT:
The invention is a composition and method for treating aluminum. The composition comprises phosphonic acid, fluorozirconic acid, fluorotitanic acid, fluorohafnic acid, or fluorosilicic acid and a Mannich adduct of an polyalkenyl phenol or tannin. The aluminum is treated by contact with the composition. An inorganic-organic conversion coating is applied to the aluminum in a single step.

REFERENCES:
patent: 4017334 (1977-04-01), Matsushima
patent: 4470853 (1984-09-01), Das

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