The article discusses one of the most popular polymers today - low molecular weight polyisobutylene (PIB). Its production and economic purpose is revealed, and an analysis of the market for this polymer is carried out. Low molecular weight polyisobutylene is one of the most popular materials in manufacturing and can be used in various industries. Low molecular weight polyisobutylene is ideal for use in a variety of industries such as conveyor belts, sealing materials, adhesives, sealants, emulsifiers and many others. Low molecular weight polyisobutylene is also widely used in the production of elastomers, which find applications in the automotive, aerospace and oil and gas industries. Elastomers containing PIB are highly elastic and resistant to various types of influences, such as high temperature, petroleum products and other chemicals. The low molecular weight polyisobutylene market is one of the most dynamically developing in the world; the production capacity of PIB (low molecular weight, medium molecular weight, high molecular weight) is more than 1 million tons per year. The share of polyisobutylene imports in Russia today is 99%, and the share of suppliers who have stopped supplies to Russia due to sanctions in the total volume of imports is about 85% (1). The only manufacturer of high-molecular and low-molecular PIB in Russia is JSC Efremov Synthetic Rubber Plant, which produces about 4000 MT of polymer. Considering the large share of suppliers who left the Russian market, there was an urgent need to find alternative suppliers, as well as import substitution. The Russian low molecular weight polyisobutylene market is a competitive and dynamic sector that is currently experiencing increased demand from consumers. Taking into account the sanctions, the main supply region is becoming Asian, while Russian manufacturers are actively investing in the creation of domestic production of low molecular weight polyisobutylene. The Russian polyisobutylene market continues to grow, and the demand for this material remains stable.

1. Belova L. Creation of polyisobutylene production. Kommersant. Available at: https://www.kommersant.ru/doc/6070727 / 06/29/2023 (in Russian).

2. Possibility of increasing the construction capacity of low-molecular PIB. Petrochemistry. Available at: https://www.mrc.ru/news/409343 gruppa-kompaniy-titan-rassmatrivaet-vozmozhnost-uvelicheniya-stroyaschihsya-moschnostey-nizkomolekulyarnogo-pib / 09/18/2023 (in Russian).

3. Yakubovsky Yu.E., Khairullina L.B. Development of technologies using low-tonnage chemistry in the processing of thermoplastic polymers. Advanced technologies and materials: materials of the International scientific and practical conference. Sevastopol, 2022. pp. 430–432. (in Russian).

4. Glebova A.G. Development of safety issues for the technological process of composite materials production. Collection of works of the Research and Development Competition (R&D Competition): materials of the Youth Program of the 26th International Specialized Exhibition and Forum. Moscow, 2023. pp. 144–145. (in Russian).

5. Shpantseva L.V., Tyulentseva L.E., Ivanchenko N.I., Chibizov S.V. et al. Synthesis of low-molecular highly reactive polyisobutylene. Chemical technology and biotechnology of new materials and products: abstracts of reports of the IV International Conference of the Russian Chemical Society named after D.I. Mendeleyev, dedicated to the 80th anniversary of P.D. Sarkisov. Moscow, 2012. pp. 338–340. (in Russian).

6. Markova Yu. Review of the PIB market. Rusplast. Available at: https://rusplast.com/articles/7480/ / 2022 (in Russian).

7. Kolganov E.V., Sosnin V.A. Emulsion industrial explosives. 1st book (Compositions and properties). Dzerzhinsk, Crystal, 2009. 592 p. (in Russian).

8. Kolganov E.V., Sosnin V.A. Emulsion industrial explosives. 2nd book (Technology and safety). Dzerzhinsk, Crystal, 2009. 336 p. (in Russian).

9. The share of Russia, China and the USA in the world economy. Available at: url://https://zen.yandex.ru/media/show_me_world/dolia-rossii-kitaia-i-ssha-v-mirovoi-ekonomike 5edb8acd75cc013417183211? utm_source=serp (in Russian).

10. Khaibullova K.M., Sergin N.A., Zakirova L.Yu. Highly filled compositions based on low molecular weight polyisobutylene for temporary sealing of refrigeration equipment. Oil and Gas Chemistry - 2023: Proceedings of the VI International Scientific and Technical Forum on Chemical Technologies and Oil and Gas Refining, Minsk, November 1-3, 2023. Minsk: BSTU, 2023. pp. 68-71. (in Russian).

11. Yang B. Polyisobutylene telechelic prepolymers by in situ end-quenching and post-polymerization modifications. The University of Southern Mississippi, 2017. Available at: https: // aquila.usm.edu/ dissertations/1327

12. Shpantseva L.V., Aksenov V.I., Tyulentseva L.E. et al. Method for producing highly reactive low-molecular polyisobutylene. Patent RF, no. 2485139, 2013.

13. Solutions. Available at: https://en.mesnac.com/ solutions.html

14. Sasagawa M., Hofmans J., Van Beylen M. Solution of dilithium polymerization initiator. Patent US, no. 6613858, 2003.

15. Sun L., Wang Y., Li Y., Zhang C. Study on a novel N‐functionalized multilithium initiator and its application for preparing star‐shaped N‐functionalized styrene‐butadiene rubber. Journal of applied polymer science. 2008. vol. 109. no. 2. pp. 820-824. doi: 10.1002/app.28165

16. Peter M. Mechanism for anionic butadiene polymerization with alkyl lithium species. NRC Research press. 2009. pp. 7-13.

17. Halasa A.F., Wen-Liang Hsu. Synthesis of dilithium initiator. Patent US, no. 2001/0046938.

18. Guliyants S.T., Aleksandrova I.V. Method for producing isobutylene. Patent RU, no. 2351580, 2009.

19. Shpantseva L.V., Aksyonov V.I. et al. Method for processing an isobutene-containing hydrocarbon mixture. Patent RU, no. 2319686, 2008.

20. Polyisobutylene. Review of world production. Eurasian chemical market. 2009. no. 1 (49). pp. 2-7. (in Russian).