Phosphonic/phosphinic acid bonded to aluminum hydroxide layer

Details Phosphonic/phosphinic acid bonded to aluminum hydroxide layer Phosphonic/phosphinic acid bonded to aluminum hydroxide layer

1990-12-10

1992-07-21

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of metal

428469, 430278, 502401, 502414, B32B 1504

Patent

active

051321815

ABSTRACT:
Disclosed is a method of producing a functionalized layer and an aluminum hydroxide layer on an aluminum substrate, the aluminum hydroxide layer located between the substrate and the functionalized layer. The method comprises the steps of subjecting an aluminum substrate to a hydrothermal treatment in an aqueous solution having a pH in the range of 2 to 14 to form a layer of aluminum hydroxide on said substrate and thereafter treating said aluminum substrate with a phosphorus-containing acid selected from phosphinic and phosphonic acid to form a functionalized layer on said aluminum hydroxide layer, the functionalized layer comprised of the reaction product of said acid and the layer of aluminum hydroxide.

REFERENCES:
patent: 4994429 (1991-02-01), Wieserman et al.

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