Pavelyev, Roman S.; Zaripova, Yulia F.; Yarkovoi, Vladimir V.; Vinogradova, Svetlana S.; Razhabov, Sherzod; Khayarov, Khasan R.; Nazarychev, Sergei A.; Stoporev, Andrey S.; Mendgaziev, Rais I.; Semenov, Anton P.; Valiullin, Lenar R.; Varfolomeev, Mikhail A.; Kelland, Malcolm A. published an article in 2020, the title of the article was Performance of waterborne polyurethanes in inhibition of gas hydrate formation and corrosion: influence of hydrophobic fragments.Safety of 2,2′-(tert-Butylazanediyl)diethanol And the article contains the following content:
The design of new dual-function inhibitors simultaneously preventing hydrate formation and corrosion is a relevant issue for the oil and gas industry. The structure-property relationship for a promising class of hybrid inhibitors based on waterborne polyurethanes (WPU) was studied in this work. Variation of diethanolamines differing in the size and branching of N-substituents (Me, Bu, and tert-butyl), as well as the amount of these groups, allowed the structure of polymer mols. to be preset during their synthesis. To assess the hydrate and corrosion inhibition efficiency of developed reagents pressurized rocking cells, electrochem. and weight-loss techniques were used. A distinct effect of these variables altering the hydrophobicity of obtained compounds on their target properties was revealed. Polymers with increased content of diethanolamine fragments with n- or tert-Bu as N-substituent (WPU-6 and WPU-7, resp.) worked as dual-function inhibitors, showing nearly the same efficiency as com. ones at low concentration (0.25 wt%), with the branched one (tert-butyl; WPU-7) turning out to be more effective as a corrosion inhibitor. Com. kinetic hydrate inhibitor Luvicap 55 W and corrosion inhibitor Armohib CI-28 were taken as reference samples. Preliminary study reveals that WPU-6 and WPU-7 polyurethanes as well as Luvicap 55 W are all poorly biodegradable compounds; BODt/CODcr (ratio of BOD and COD) value is 0.234 and 0.294 for WPU-6 and WPU-7, resp., compared to 0.251 for com. kinetic hydrate inhibitor Luvicap 55 W. Since the obtained polyurethanes have a bifunctional effect and operate at low enough concentrations, their employment is expected to reduce both operating costs and environmental impact. The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).Safety of 2,2′-(tert-Butylazanediyl)diethanol
The Article related to polyurethane gas hydrate corrosion, corrosion inhibitor, dual function inhibitor, flow assurance, kinetic hydrate inhibitor, methane-propane hydrate, waterborne polyurethane and other aspects.Safety of 2,2′-(tert-Butylazanediyl)diethanol
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