C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/08 (2006.01)
Patent
CA 2242137
A corrosion-inhibiting composition for application to a metal substrate, such as steel, silver, copper or aluminum, includes a film-forming organic coating composition, and, a pigment phase of a stable unitary hybrid material which contains organic and inorganic solid phase constituents interfaced at a crystallite level, that are inseparable by physical separation procedures and which display uniphase behavior. The inorganic phase includes a cation selected from Zn, Al, Mg, Ca, Sr, Ti, Zr, Ce and Fe and an anion selected from phosphates, polyphosphates, phosphites, molybdates, silicates and cyanamides. The organic phase includes zinc or alkyl-ammonium (for example: cyclohexyl- ammonium, di-cyclohexyl-ammonium, octyl-ammonium) salts of organic mercapto- and thio- compounds or their alkyl-substituted derivatives, as follows: mercaptobenzothiazole, mercaptothiazoline, mercaptobenzimidazole, mercaptoimidazole, 2,5-dimercapto-1,3,4-thiodiazole, 5,5-dithio-bis(1,3,4- thiadiazole-2(3H)-thione, mercaptobenzoxazole, mercaptothiazole, mercaptotriazole, mercaptopyrimidine, mercaptopyridine, mercaptoquinoline, alkyl- and cyclo-alkyl mercaptanes, N-alkyl- or N-cycloalkyl-dithiocarbamates, O-alkyl- or O-cycloalkyl-dithiocarbonates, O,O-dialkyl- and O,O-dicycloalkyl- dithiophosphates.
La présente invention concerne une composition anticorrosion à appliquer sur un substrat en métal, tel que l'acier, l'argent, le cuivre ou l'aluminium. Cette composition comporte une composition organique de revêtement filmogène et une phase pigmentaire constituée d'une matière hybride unitaire stable à base de constituants organiques et non organiques en phase solide interfacés au niveau cristallite, inséparables selon les procédés de séparation physique et faisant preuve d'un comportement monophase. La phase non organique comporte un cation appartenant au groupe des Zn, Al, Mg, Ca, Sr, Ti, Zr, Ce et Fe et un anion choisi à partir de phosphates, polyphosphates, phosphites, molybdates, silicates et cyanamides. La phase organique comprend des sels de zinc ou d'alkyl-ammonium (tels que le cyclohexyl-ammonium, le di-cyclohexyl-ammonium, l'octyl-ammonium) de composés organiques mercapto- et thio- ou leurs dérivés à substitution alkyle tels que les mercaptobenzothiazole, mercaptothiazoline, mercaptobenzimidazole, mercaptoimidazole, 2,2-dimercapto-1,3,4-thiodiazole, 5,5-dithio-bis(1,3,4-thiadiazole-2(3H)-thione, mercaptobenzoxazole, mercaptothiazole, mercaptotriazole, mercaptopyrimidine, mercaptopyridine, mercaptoquinoline, alkyl- et cycloalkyl-mercaptanes, N-alkyl- ou N-cycloalkyl-dithiocarbamates, O-alkyl- ou O-cycloalkyl-dithiocarbonates, O,O-dialkyl- et O,O-dicycloalkyl-dithiophosphates.
Smart & Biggar
Wayne Pigment Corp.
LandOfFree
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