C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
88/116, 31/34, 3
C09D 5/08 (2006.01) C09C 1/00 (2006.01) C23F 11/00 (2006.01)
Patent
CA 2305593
A corrosion-inhibiting composition for application to a metal substrate, such as steel, silver, copper or aluminum, includes a film-forming organic polymer component and a dispersed pigment phase of a stable unitary hybrid which contains organic and inorganic solid phase constituents interfaced at a micro- crystalline level, which 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, -alkyl- or N-cycloalkyl-dithiocarbamates, O-alkyl- or O-cycloalkyl-dithiocarbonates, O,O-dialkyl- and O,O-dicycloalkyl- dithiophosphates.
L'invention concerne une composition anticorrosion à appliquer sur un substrat métallique, tel que l'acier, l'argent, le cuivre ou l'aluminium. Cette composition comporte un composant polymère organique filmogène et une phase pigmentaire dispersée d'un hybride unitaire stable qui contient des constituants organiques et inorganiques en phase solide interfacés à un niveau micro-cristallin, qui ne peuvent pas être séparés par des procédés de séparation physique et qui présentent un comportement monophase. La phase inorganique comprend un cation sélectionné parmi Zn, Al, Mg, Ca, Sr, Ti, Zr, Ce et Fe et un anion sélectionné parmi des phosphates, des polyphosphates, des phosphites, des molybdates, des silicates et des 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 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- et cyclo-alkyl mercaptans, -alkyl- ou N-cycloalky-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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