WILLIAM J NEILL
Vehicle Board in Hatboro, PA
License number
Pennsylvania MV124172L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Hatboro, PA 19040
Professional information
Composition And Method For Non-Chromate Coating Of Aluminum
US Patent:
5129967, Jul 14, 1992
Filed:
Mar 8, 1990
Appl. No.:
7/490188
Inventors:
Lothar S. Sander - Princeton NJ
Edward M. Musingo - Roslyn PA
William J. Neill - Hatboro PA
David W. Reichgott - Richboro PA
Edward M. Musingo - Roslyn PA
William J. Neill - Hatboro PA
David W. Reichgott - Richboro PA
Assignee:
Betz Laboratories, Inc. - Trevose PA
International Classification:
C23C 2234
US Classification:
148247
Abstract:
A chromate and phosphate free composition and method for forming a dried in place conversion coating for aluminum and aluminum alloys. The method entails the application of the composition to aluminum or aluminum alloys and allowing the composition to dry in place. The composition is an acidic aqueous solution preferably containing more than 8 grams per liter dihydrohexafluozirconic acid, more than 10 grams per liter polyacrylic acid and more than 0. 17 grams per liter hydrofluoric acid in a ratio of 1:0. 84:0. 014. Up to about 0. 6 gram per liter dihydrohexafluotitanic acid is added to facilitate analytical testing in aqueous systems. The solution forms a dried in place conversion coating having a weight of from 6 to 25 milligrams per square foot in treatment (contact and drying) times as short as 2 seconds.