Polyamine-based corrosion inhibitors

Details Polyamine-based corrosion inhibitors Polyamine-based corrosion inhibitors

C - Chemistry, Metallurgy

07

C

C07C 211/63 (2006.01) C07C 211/09 (2006.01) C23F 11/14 (2006.01)

Patent

CA 2535675

Compounds having N-oxide, quaternary ammonium, and/or betaine functionality according to formulas (1) - (4) are effective corrosion inhibitors, suitable for use in any of a variety of applications such as automotive cooling systems, heating boilers, drilling of oil wells, and the handling, transportation and storage of crude petroleum and various petroleum fractions. See formula I The groups R1 - R5 may be certain hydrocarbyl groups. In formulas (1) and (3), R3 may also be (CH2)p-COO- in which p is either 1 or 2, and R2 may also be (CH2)p-COO- in formulas (3) and (4). In the compounds of formulas (1) and (2), R2 may also be a polyhydroxyalkyl group of formula (A), shown below. Image

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