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Low-Dosage Hydrate Inhibitors Based on Maleic Anhydride Copolymers with Isopropylacrylamide

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Chemistry and Technology of Fuels and Oils Aims and scope

A study was carried out on the effect of copolymers derived from maleic anhydride on the formation of a methane-propane hydrate. Isopropylacrylamide was selected as the co-monomer. The polymerization reaction was carried out in petroleum ether. The maleic acid ring was then opened using such nucleophiles as dibutylamine and diethanolamine. Some of the obtained polymers at concentration 0.5 mass % lower the temperature for the onset of hydrate formation similar to the commercial kinetic hydrate inhibitor Luvicap EG. However, the water-to-hydrate conversion was higher in the case of our proposed reagents. The best supercooling result was found for the sample with a higher content of isopropylacrylamide fragments when dibutylamine was used as the nucleophile. The lowest water-to-hydrate conversion was found for the polymer with a higher content of maleic fragments also opened by dibutylamine.

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Acknowledgments

This work was carried out with a subsidy given to the Kazan Federal University for the State Science Project No. FZSM-2023-0014.

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Authors and Affiliations

  1. Kazan Federal University, Kazan, Russia

    P. Yu. Kazakova, D. O. Gnezdilov, R. S. Pavelyev, E. R. Son & M. A. Varfolomeev

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  1. P. Yu. Kazakova
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  2. D. O. Gnezdilov
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  3. R. S. Pavelyev
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  4. E. R. Son
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  5. M. A. Varfolomeev
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Correspondence to R. S. Pavelyev.

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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 4, pp. 62–66, July – August, 2023.

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Kazakova, P.Y., Gnezdilov, D.O., Pavelyev, R.S. et al. Low-Dosage Hydrate Inhibitors Based on Maleic Anhydride Copolymers with Isopropylacrylamide. Chem Technol Fuels Oils 59, 732–736 (2023). https://doi.org/10.1007/s10553-023-01577-7

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  • DOI: https://doi.org/10.1007/s10553-023-01577-7

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