Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Reexamination Certificate
2004-02-23
2010-02-16
King, Roy (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
C148S240000, C148S243000, C148S274000, C148S275000, C106S014050, C106S014110, C106S014130, C106S014430, C106S014440
Reexamination Certificate
active
07662241
ABSTRACT:
A corrosion-inhibiting composition for application to a metal substrate, such as aluminum or steel, and in connection with a paint, and the synthesis of the composition. The active inhibitor constituent of the composition can be selected from the group consisting of 2,5-dimercapto-1,3,4 thiadiazole (DMTD), 2,4-dimercapto-s-triazolo-[4,3-b]-1,3-4-thiadiazole, trithiocyanuric acid (TMT), and derivatives of DMTD and TMT, including various N— or S— and N, N—, S— and N—,S-substituted derivatives of DMTD, including salts of DMTD of the general formula: M(DMTD)n, where n=1,2 or 3, and M is a metal cation and preferably M=Zn(II), Bi(III), Co(II), Ni(II), Cd(II), Pb(II), Ag(I), Sb(III), Cu(II), Li(I), Ca(II), Sr(II), Mg(II), La(III), Ce(III), Pr(III), Al(III) or Zr(IV). DMTD, TMT, and their derivatives may also be combined with phosphates, molybdates, borates, silicates, tungstates, phosphotungstates, phosphomolybdates, cyanamides, carbonates, SiO2and mixtures thereof.
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“Challenges of Chromate Inhibitor Pigments Replacement in Organic Coatings” John Sinko May 1, 2001, 2001 Elsevier Science B.V., pp. 267-282, in U.S. Appl. No. 10/138,794.
King Roy
Ryan Kromholz & Manion S.C.
Wayne Pigment Corp.
Zheng Lois
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