Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Reexamination Certificate
2004-06-25
2009-08-25
Lorengo, Jerry (Department: 1793)
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
C106S400000, C106S014440, C106S014050, C106S014170, C106S014410, C106S014250, C106S014430, C106S419000, C106S431000, C106S436000, C106S442000, C106S445000, C427S372200, C427S435000, C427S443200
Reexamination Certificate
active
07578878
ABSTRACT:
A pigment grade corrosion inhibitor and a method of applying the inhibitor is disclosed. The inhibitor is comprised of a host species comprised of an inorganic compound having a layered structure and a guest species comprised an anionic species of a weak acid. The host species is preferably a double hydroxide having a structure of: [M(II)1−xM(III)x(OH−)2][An−x
.yH2O], where M(II) is a divalent metal cationic species, M(III) is a trivalent metal cationic species, and An−is an anionic species, preferably with the species present in a range of: 0.2≦M(III)/(M(II)+M(III))≦0.4. The guest species include: various phosphoric acids and derivatives thereof; various molybdic acids and derivatives; boric acid; cyanamidic acid; nitrous acid; derivatives of thio- and dithiocarbonic acid; thio-organic compounds functionalized with at least one —SH group of acidic character, including: 2,5-dimercapto-1,3,4-thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4 thiadiazole, trithiocyanuric acid (TMT), and dithiocyanuric acid, and various derivatives thereof.
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Kendig Martin W.
Sinko John
Lorengo Jerry
Parvini Pegah
Ryan Kromholz & Manion S.C.
Wayne Pigment Corp.
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