Abstract
Depressor additives based on stearyl methacrylate homopolymer and its copolymers with various monomers (butyl methacrylate, methacrylic acid esters of С10–С14 fraction, maleic anhydride) were synthesized in the presence of reversible addition–fragmentation chain-transfer agents allowing control of the molecular-weight characteristics of the polymers. The low-temperature properties of the diesel fuel containing additives based on the above polymers were evaluated. The copolymers exhibit the better depressor effect compared to the stearyl methacrylate homopolymer. Modification of the stearyl methacrylate–maleic anhydride copolymer with 1-octanol was performed. The modified additive well competes in performance with the modern commercial depressor-dispersing additives and can decrease the congealing point of hydrotreated diesel fuels by 20°С.
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E.V. Kolyakina: collection, analysis, and interpretation of the results of experiments on polymerization of monomers in the presence of 2-cyano-2-propyl dithiobenzoate (CPTB), study of the low-temperature characteristics of diesel fuel, manuscript preparation, major contribution to writing the Results and Discussion section, and approval of the final version of the paper; M.V. Pavlovskaya: collection, analysis, and interpretation of the results of experiments on polymerization of monomers in the presence of 2-cyano-2-propyl dodecyl trithiocarbonate (CPTC), study of the low-temperature characteristics of diesel fuel, collection of literature data and preparation of the literature review, and approval of the final version of the paper; Yu.S. Pronina: development and description of the experimental procedures for modifying stearyl methacrylate–maleic anhydride copolymers, analysis of the copolymers by IR and NMR spectroscopy, description of the results, and approval of the final version of the paper; S.D. Zaitsev: synthesis of 2-cyano-2-propyl dodecyl trithiocarbonate, participation in the data processing by critical revision of the results and manuscript, and approval of the final version of the paper; D.F. Grishin: significant contribution to the concept of the study, evaluation and analysis of the results obtained, participation in the data processing by critical revision of the results and manuscript, and approval of the final version of the paper.
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Translated from Zhurnal Prikladnoi Khimii, No. 10, pp. 809–823, August, 2023 https://www.elibrary.ru/MFMNGY
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Kolyakina, E.V., Pavlovskaya, M.V., Pronina, Y.S. et al. Development of Effective Depressor Additives to Diesel Fuel, Based on Copolymers of Stearyl Methacrylate with Monomers of Various Structures. Russ J Appl Chem 96, 889–902 (2023). https://doi.org/10.1134/S1070427223100026
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DOI: https://doi.org/10.1134/S1070427223100026