Method for enhancing the corrosion resistance of chemical conver

Details Method for enhancing the corrosion resistance of chemical conver Method for enhancing the corrosion resistance of chemical conver

1998-09-22

2000-06-13

Willis, Prince

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148265, 148275, 106 1416, C23C 2200

Patent

active

060744952

ABSTRACT:
A method for treating aluminum to enhance corrosion resistance of its surface. The chemical conversion coating aluminum and aluminum alloys are exposed to an aqueous PU solution to form a PU film on the surface. The aqueous PU solution comprises: (i) 5-15% weight of water dispersable polyurethane resin, (ii) 0.1-56 weight of cross-linking agent, and (iii) 80-94.9% weight of water.

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patent: 5308709 (1994-05-01), Ogino et al.
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