Nonabrasive, corrosion resistant, hydrophilic coatings for alumi

Details Nonabrasive, corrosion resistant, hydrophilic coatings for alumi Nonabrasive, corrosion resistant, hydrophilic coatings for alumi

1995-10-24

1997-03-25

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C23C 2207

Patent

active

056140355

ABSTRACT:
A nonabrasive, corrosion-resistant, hydrophilic coating on aluminum sheet such as fin stock, produced by applying to the sheet surface a coating material containing, in an aqueous vehicle, effective amounts of nitrilotrismethylenetriphosphonic acid, phosphoric acid, and borate material of the group consisting of zinc borate and sodium borate, and essentially free of silica, alumina and precursors thereof, and heating the surface to establish the coating thereon. The coating formulation may also contains up to about 1 wt. % of polyacrylic acid and a surfactant to aid in application.

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