Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1989-04-20
1990-09-04
Lusignan, Michael
Coating processes
With post-treatment of coating or coating material
Heating or drying
4273884, 524515, 524521, 525209, 525212, 525218, B05D 302
Patent
active
049543725
ABSTRACT:
A durable hydrophilic surface can be formed on metals by coating them with a composition containing a first water soluble polymer based on polyacrylamide, a second water soluble polymer with at least 60 mole percent of ionizable groups such as acids and quaternary ammonium salts, and a cross linking agent. Water soluble chromium and zirconium salts that can form complexes with the first water soluble polymer are preferred crosslinking agents. The invention is particularly useful for aluminum to be used in heat exchangers.
REFERENCES:
patent: 4610898 (1986-09-01), Engel et al.
patent: 4631226 (1986-12-01), Jellinek
Hasebe Akihiko
Nishihara Akira
Okita Hiroshi
Sako Ryohsuke
Jaeschke Wayne C.
Lusignan Michael
Nihon Parkerizing Co. Ltd.
Szoke Ernest G.
Wisdom, Jr. Norvell E.
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