Prevention of water staining of aluminum

Coating processes – Removable protective coating applied – Metal base

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Details

427178, 427383C, 427421, C21D 100

Patent

active

041222172

ABSTRACT:
This invention relates to a method for protecting aluminum and aluminum alloy products against water staining. The method involves applying a continuous film of a protective composition to the surface of the aluminum product. The protective compositions useful for the invention are blends or reaction products of a polybasic acid and a partial ester of a polyol.

REFERENCES:
patent: 2767144 (1956-10-01), Gottshall et al.

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