Compositions: coating or plastic – Coating or plastic compositions – Corrosion inhibiting coating composition
Patent
1998-03-12
1999-10-12
Green, Anthony
Compositions: coating or plastic
Coating or plastic compositions
Corrosion inhibiting coating composition
106 1412, 106 1413, 106 1414, 106 1415, 106 1416, 106 1417, 106 1444, 148247, 148269, 148275, C23C 2205, C09D 500, C09D 508
Patent
active
059649283
ABSTRACT:
Compositions and processes are disclosed for producing improved environmental protection, corrosion resistance and improved paint adhesion for metals e.g., ferrous, aluminum, or magnesium alloys, as well as other substrates upon contact. The compositions and processes comprise use of one or more Group IV-A metals, such as zirconium, in combination with one or more Group III-A metals, such as cerium, in an acidic solution with one or more oxyanions or other non-fluoanions to stabilize and solubilize the metals while fluorides are specifically excluded from the processes and compositions above certain levels. The processes can contain pretreatment stages that serve to activate a substrate surface and/or promote formation of mixed-metal oxide matrices through use of an oxygen donor. The compositions are at a pH below about 7.0 and are preferably in a range between about 1.0 and about 4.0. The coatings may contain surfactants, sequestering agents, or organic additives for improved corrosion protection and paint adhesion. The substrate may be treated by immersion, spray, fogging or rollcoat.
REFERENCES:
patent: 3969152 (1976-07-01), Melotik
patent: 4338140 (1982-07-01), Reghi
patent: 4359347 (1982-11-01), Da Fonte, Jr.
patent: 4462842 (1984-07-01), Uchiyama et al.
patent: 4470853 (1984-09-01), Das et al.
patent: 4863706 (1989-09-01), Wada et al.
patent: 5128065 (1992-07-01), Hollander
patent: 5156769 (1992-10-01), Cha et al.
patent: 5192374 (1993-03-01), Kindler
patent: 5194138 (1993-03-01), Mansfeld et al.
patent: 5209788 (1993-05-01), McMillen et al.
patent: 5322560 (1994-06-01), DePue et al.
patent: 5362335 (1994-11-01), Rungta
patent: 5380374 (1995-01-01), TOmlinson
patent: 5397390 (1995-03-01), Gorecki
patent: 5399210 (1995-03-01), Miller
patent: 5441580 (1995-08-01), Tomlinson
patent: 5525560 (1996-06-01), Yamazaki et al.
patent: 5662746 (1997-09-01), Affinito
patent: 5759244 (1998-06-01), Tomlinson
Connick et al., J. Am. Chem. Soc. vol. 71, The Aqueous Chemistry of Zirconium (Sep. 1949), pp. 3182-3184, 3186-3187, and 3190-3191.
Greenwood et al., Chemistry of the Elements, (1984) p. 1425 No Month.
Kendig et al., Corrosion Science, vol. 34, No. 1, The Mechanism of Corrosion Inhibition by Chromate Conversion Coatings from X-Ray Absorption Near Edge Spectroscopy (XANES), (May 1992), pp. 41-49.
Nebergall et al., General Chemistry 6.sup.th Ed., Covalent and Ionic Radii of the Elements (1980) No Month.
Tomlinson, Cadmium and Chromium Alternatives: An Information Exchange, (Nov. 5-7, 1997) p. 30.
Lewis Research Center, NASA Tech Briefs, Materials (Jan. 1998), p. 68.
Thomas et al., J. Am. Chem. Soc. vol. 57, Basic Zirconium Chloride Hydrosols (1935), pp. 1825-1828, No Month.
Green Anthony
Natural Coating Systems, LLC
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