Patent ID: 6696572
Filing Date: 2004-02-24
Classification: C09K,C23F

Abstract:
A method for reducing the corrosion rate of a metal by a fluid having at least one corrosion agent, said method comprising:introducing a composition comprising at least a quaternized compound into said fluid; and contacting said metal with the fluid wherein the composition is produced by a process including the steps of: (a) providing a first organic compound from the group consisting of: (i) substituted and unsubstituted, saturated and unsaturated fatty acids having from 6 to 30 carbon atoms; (ii) substituted and unsubstituted, saturated and unsaturated fatty acids having from 6 to 30 carbon atoms, wherein said fatty acid is at least oxygenized, sulfurized or phosphorylized; and (iii) combinations thereof; (b) providing an alkyl polyamine from the group having the formula: H2Nâ€”CH2â€”(CH2)pNHâ€”(CH2)qâ€”NH2 wherein p=1 to 5 and q=2 to 10; (c) providing a second organic compound selected from the group consisting of: (i) carbonyl compounds having from 2 to 31 carbon atoms; (ii) fatty acids having from 2 to 30 carbon atoms; and (iii) combinations thereof; (d) providing a third organic compound from the group consisting of: (i) substituted and unsubstituted, &agr;, &bgr;-unsaturated carboxylic fatty acids, and amide derivatives thereof, having from 3 to 11 carbon atoms; (ii) substituted and unsubstituted &agr;, &bgr;-unsaturated sulfonic and phosphonic fatty acids having from 2 to 11 carbon atoms; and (iii) combinations thereof; (e) mixing said first organic compound and said alkyl polyamine in a mole ratio in a range of from about 0.6:1 to about 1.2:1 to produce at least one first intermediate compound, wherein said mole ratio is the total moles of said first organic compound to the total moles of said alkyl polyamine; (f) mixing said at least one first intermediate compound with said second organic compound to produce a second intermediate compound; and (g) mixing said second intermediate compound with said third organic compound to produce said composition.