| US 7,462,394 B2 | ||
| Method of stabilizing metal pigments against gassing | ||
| Cathy A. Taylor, Allison Park, Pa. (US); Daniel Rardon, Sewickley, Pa. (US); Paul Lamers, Allison Park, Pa. (US); Kaliappa G. Ragunathan, Gibsonia, Pa. (US); Shanti Swarup, Allison Park, Pa. (US); and Michael Hart, Cleveland Heightsy, Ohio (US) | ||
| Assigned to PPG Industries Ohio, Inc., Cleveland, Ohio (US) | ||
| Filed on May 02, 2005, as Appl. No. 11/120,228. | ||
| Claims priority of provisional application 60/569307, filed on May 06, 2004. | ||
| Prior Publication US 2005/0250877 A1, Nov. 10, 2005 | ||
| Int. Cl. C09C 3/10 (2006.01); C09C 1/40 (2006.01) | ||
| U.S. Cl. 428—407 [427/216; 106/14.41; 106/14.42; 106/404; 106/403; 106/460; 523/200; 523/206; 523/458; 523/459; 524/431; 524/434; 524/435; 524/437] | 14 Claims |
| 1. A passivated metal pigment, comprising:
at least one metal pigment particle; and
a passivating material formed over at least a portion of the at least one pigment particle, the passivating material comprising
a polymer comprising the reaction product of:
a diglycidyl ether of a polyhydric alcohol;
a nitro group-containing compound selected from at least one of an alkyl, an aryl, and/or an alkyl aryl nitro group-containing
compound; and
a phosphorous group-containing compound comprising a phosphate group and/or a non-nitrogen substituted phosphonate group.
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