US 12,291,785 B2
Ethoxylated fatty diamine as a corrosion inhibitor for pipelines and storage tanks
Jothibasu Ramasamy, Dhahran (SA); Muthukumar Nagu, Dhahran (SA); Ashok Kumar Santra, The Woodlands, TX (US); and Nayef M. Alanazi, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Nov. 22, 2022, as Appl. No. 18/058,063.
Prior Publication US 2024/0183038 A1, Jun. 6, 2024
Int. Cl. C23F 11/14 (2006.01); C10G 75/02 (2006.01); C10L 10/04 (2006.01)
CPC C23F 11/146 (2013.01) [C10G 75/02 (2013.01); C10L 10/04 (2013.01); C23F 11/142 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for inhibiting corrosion in a refined hydrocarbon-bearing system, the method comprising:
introducing a corrosion inhibition composition to the refined hydrocarbon-bearing system,
wherein the corrosion inhibition composition comprises a carrier fluid and a corrosion inhibitor consisting essentially of a compound represented by Formula (I):

OG Complex Work Unit Chemistry
wherein:
R1, R2, R3, and R4 are each, independently, a hydrogen or an alkoxy group, and m and n are each, independently integers ranging from 2 to 10, wherein:
at least one of R1, R2, R3, and R4 is the alkoxy group; and
R5 and R6 are each, independently, a saturated C6-C10 hydrocarbon group or an unsaturated C6-C10 hydrocarbon group, and
wherein the corrosion inhibition efficiency is at least 80% or above.