Compositions – Preservative agents – Anti-corrosion
Patent
1993-06-01
1994-06-21
Stoll, Robert L.
Compositions
Preservative agents
Anti-corrosion
252392, 252394, 252395, 422 15, 422 16, 422 17, 5483481, 5483501, 5483511, 5483521, C23F 1114, C23F 1116, C23F 11167
Patent
active
053226402
ABSTRACT:
This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a water-soluble ampholytic substituted imidazoline having the formula: ##STR1## wherein R1 comprises a radical selected from the group consisting of hydrogen, alkyl, and aryl groups having 6 to 30 carbons; R2 comprises a radical selected from the group consisting of polyalkylene polyamines having from 2 to 16 carbon atoms, NH.sub.2, N(R.sub.4).sub.2, OH and SH; R.sub.3 is a radical selected from the group consisting of carboxylate, carbonate, sulfite, sulfate, phosphite, and phosphate; n is a number from 1 to 10; and, R4 comprises a branched or linear alkyl chain having a length of 1 to 8.
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Balanced Amphoteric Surfactants, Eric G. Lomax, Tech. Director, Venture Chemicals, Ltd., London, Soap/Cosmetics/Chemical Specialties, Nov. 1972.
Byrne Norman E.
Johnson John D.
Barrett Joseph B.
Drake James J.
Fee Valerie
Miller Robert A.
Nalco Chemical Company
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