C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
134/27, 31/37, 1
C07D 213/60 (2006.01) C07D 401/04 (2006.01) C07F 7/00 (2006.01) C07F 9/58 (2006.01)
Patent
CA 2005216
SYNERGISTIC CORROSION INHIBITORS BASED ON SUBSTITUTED PYRIDINIUM COMPOUNDS Abstract of Invention The present invention relates to a compound of the formula: Image wherein (a) A is independently selected from -SR1, -NR1R2,- PR1R2, -Si,R1R2R3, or -SnR1R2R3, R1, R2 and R3 are each independently selected from alkyl, cycloalkyl, alkylcycloalkyl, arylalkyl having from 1 to 20 carbon atoms or aryl, substituted aryl, or where R2 and R3 together form a heterocycle group, having from 4 to 20 carbon atoms, and n is an integer from 1 to 5; (b) Y is selected from a direct bond or -CR4R5-, wherein R4 and R5 are each independently selected from hydrogenl or alkyl group having 1 to 20 carbon atoms or R4 and R5 together form a cycloalkyl group having 4 to 20 carbon atoms; (c) Z is aryl or substituted aryl; and (d) X is halogen, sulfonate, carboxylate, phosphate, carbonate, sulfate, or MDm wherein M is boron, phosphorous, arsenic, antimony or silicon, D is fluorine, chlorine, bromine or iodine and m is 2, 3 or 4. These compounds are useful as synergistic corrosion inhibitors for metals. These compounds are also useful as bacteriostats, antifungal agents and as deicing agants as surfactant.
Hettiarachchi Samson
Macdonald Digby D.
Narang Subhash C.
Gowling Lafleur Henderson Llp
Hettiarachchi Samson
Macdonald Digby D.
Narang Subhash C.
Sri International
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