Stock material or miscellaneous articles – Composite – Of metal
Patent
1994-01-25
1995-12-26
Turner, Archene
Stock material or miscellaneous articles
Composite
Of metal
428472, 428702, 428623, 428625, 428626, 428629, 428631, 428632, 428633, B32B 1518
Patent
active
054786550
ABSTRACT:
Painted metal sheet pretreated with a composite coating including an insoluble, inorganic inner layer and an organic outer layer. The inorganic layer is formed by rinsing the sheet with an alkaline solution containing at least 0.005M of at least one of a dissolved silicate or a dissolved aluminate. The sheet is dried to form an inorganic layer having a thickness of at least 2 .ANG.. The inorganically coated sheet then is rinsed with a solution containing at least 0.1 vol.-% of a hydrolyzed silane and at least 0.02 vol.-% of a hydrolyzed crosslinking agent. The silane treated sheet is dried to form a siloxane layer having an average thickness at least 5 .ANG.. After being painted, the siloxane layer forms an adherent bond between the paint and the metal substrate. The metal preferably is a chromium alloyed steel and may be etched prior to being rinsed with the alkaline solution to remove chromium oxide to further enhance the paint adhesion. Preferred rinsing times for the etchant, the alkaline solution and the silane solution are 2-5 seconds, 15-30 seconds and 5-10 seconds, respectively.
REFERENCES:
patent: 3175921 (1965-03-01), Hedlund
patent: 3994751 (1976-11-01), Ingram
patent: 4407899 (1983-10-01), Hara
patent: 4411964 (1983-10-01), Hara
patent: 4450209 (1984-05-01), Hara
patent: 5108793 (1992-04-01), van Ooij et al.
patent: 5108793 (1992-04-01), van Ooij
patent: 5200275 (1993-04-01), van Ooij
patent: 5326594 (1994-07-01), Sabata et al.
van Ooij & Sabata, "Effect of Paint Adhesion on the Underfilm Corrosion of Painted Precoated Steels" Mar. 11-15, 1991, paper 417, NACE.
Sabata Ashok
van Ooij Wim J.
Armco Inc.
Bunyard R. J.
Fillnow L. A.
Johnson R. H.
Speer Timothy M.
LandOfFree
Metal pretreated with an inorganic/organic composite coating wit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Metal pretreated with an inorganic/organic composite coating wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal pretreated with an inorganic/organic composite coating wit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1367959