Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1992-11-27
1994-12-13
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
428402, 428403, 428697, C09C 164
Patent
active
053726383
ABSTRACT:
The invention is an aluminum flake pigment particle, surface treated transition metal or rare earth metal salt. The treated pigment particle has been found to be highly useful in water-borne coating compositions having a basic pH. The treated pigment particles experience significantly less hydrogen gassing in a high pH environment, and in water-borne coating compositions than untreated aluminum flake pigment particles. The treated pigment particles are also useful when combined with a pigment dispersant composition to further inhibit corrosion and gassing when the pigments are used in a coating composition.
REFERENCES:
patent: 5057156 (1991-10-01), Kuwajima et al.
patent: 5093391 (1992-03-01), Barsotti et al.
patent: 5151125 (1992-09-01), Kuwajima et al.
patent: 5215579 (1993-06-01), Keemer et al.
D. R. Arnott et al, Cationic-Film-Forming Inhibitors for the Protection of the AA 7075 Aluminum Alloy Against Corrosion in Aqueous Chloride Solution, Jan. 1989, Corrosion, v. 45, No. 1.
Bemer Lynne G.
Carpenter Clint W.
DePue Jeffrey S.
BASF Corporation
Bell Mark L.
Hertzog Scott L.
Sabourin Anne Gerry
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