Imidazoline corrosion inhibitors

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C252S394000

Reexamination Certificate

active

07057050

ABSTRACT:
This invention provides a series of novel acrylated, substituted imidazoline corrosion inhibitors of the formula:wherein R1is an alkyl radical having from 2 to 8 carbon atoms; R2is a radical derived from a fatty acid; and R3is a radical derived from an unsaturated acid and a method for inhibiting corrosion in metallic flow lines through the introduction of such inhibitors into a system wherein corrosion is sought to be precluded.

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“The Existence of Imidazoline Corrosion Inhibitors”, Valone et al., CORROSION 84, No 232, Apr. 2-6, 1984, pp. 232/1-8.
“Tall Oil Fatty Acid Anhydrides as Corrosion Inhibitor Intermediates”, CORROSION 95, Fischer et al., No. 493, pp. 493/1-4.
“Mechanistic Studies of the Corrosion Inhibitor Oleic Imidazoline”, Edwards et al., Corrosion Science, vol. 36, No. 2, pp. 315-325, 1994.
“The Study of Inhibitors for Sour Gas Service”, Suzuki et al., Corrosion Nace, pp. 384-389, Sep. 1981.

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