METHODS FOR PROCESSING GAIN PINE (PINUS SYLVESTRIS L.)

UDC 676.085.4

 

Klyuev Andrey Yur’yevich – DSc (Engineering), Professor, Professor, the Department of Woodworking Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: andrey_kluev_bstu@mail.ru

Prokopchuk Nikolay Romanovich – Corresponding Member of the National Academy of Sciences of Belarus, DSc (Chemistry), Professor, Professor, the Department of Polymer Composite Materials. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nrprok@gmail.com

Mazalo Nadezhda Aleksandrovna – PhD student. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: mazalo@belstu.by

DOI: https://doi.org/ 10.52065/2520-2669-2023-271-2-4 (In Russian).

 

Key words: rosin, pine resin, chemical modification, citraconic anhydride, terpenoid-maleic adduct.

For citation: Klyuev A. Yu., Prokopchuk N. R., Mazalo N. A. Methods for processing gain рine (Pinus sylvestris L.). Proceedings of BSTU, issue 2, Chemical Engineering, Biotechnologies, Geoecology, 2023, no. 2 (271), pp. 26–34. DOI: 10.52065/2520-2669-2023-271-2-4 (In Russian).

Abstract

The article substantiates the need to revive the sowing farm and reconstruct the existing rosinturpentine plants in the Republic of Belarus and the Russian Federation. The problems of effective development of the industry and ways to solve them are considered. A review of the scientific literature on the topic of new developments in the processing of Scotch pine resin Pinus sylvestris L. using various types of raw materials, chemical and physical methods: under the influence of high temperatures, live steam and pressure, dienophilic substances. A scheme for the processing of pine resin directly at the harvesting sites is given and a device for its implementation is described. An improved scheme for the deep processing of pine oleoresin reflects the wide possibilities of using both the original gum rosin and turpentine and derivatives based on them, as well as completely new products of chemical synthesis (terpenoid-maleic and rosin-citracone adducts and their derivatives) in many industries. A method for obtaining a rosin adduct is described, and the reaction of interaction between rosin and citraconic anhydride, including the use of various catalytic additives, is presented, and the influence of conditions on the properties of the final product is shown. The dependence of the composition of the obtained rosin-terpenomaleic adducts on the depth of modification of turpentine composition from 30/70 to 70/30% with maleic anhydride was noted.

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02.03.2023