Pigment grade corrosion inhibitor host-guest compositions and procedure
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United States of America Patent
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Aug 25, 2009
Grant Date -
Feb 3, 2005
app pub date -
Jun 25, 2004
filing date -
May 4, 2001
priority date (Note) -
Expired
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Abstract
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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