At present, much attention is paid to improving the production of synthetic rubbers. The introduction of new technologies to increase the productivity of the process, more fully and rationally use valuable hydrocarbon raw materials, reduce environmental pollution and improve the quality of the products is an important and urgent task. Equally important in this case is the selection of new coagulating agents used in the technology of rubber release from latex. The main requirements for coagulating agents used in the technology of rubber release from latex are: availability, low cost, non-toxicity, ease of cleaning of sewage coming to treatment facilities from them. The possibility of application of the beet-sugar production waste - molasses for beet-lean depletion - in the technology of producing butadiene-styrene rubber SKS-30 ARC has been studied. A feature of the behavior of molasses, as a coagulating agent, is shown when isolating rubber from latex. It has been established that the consumption of molasses in the isolation of butadiene-styrene rubber from latex is closely related to the consumption of acidifying agent - sulfuric acid. The higher the molasses input for coagulation, the higher the consumption of sulfuric acid to maintain the pH of the medium at the required level. The temperature of the process did not have a significant effect on the completeness of the release of rubber from latex. The extracted crumb of rubber was separated from the aqueous phase (sulfur), washed with warm softened water and dried. On the basis of the rubber obtained, rubber mixtures were prepared using standard components and vulcanized. Rubbers obtained on the basis of rubber SKS-30 ARC, in their indicators meet the requirements.

From the literature data it is known that in industrial and civil construction it is widely used expanded polystyrene as a heat-insulating material, which is in demand on the market. In order to solve a number of ecological problems, in this work attempts have been made to chemically combine two types of polymer waste (by-products of petrochemistry in the presence of expanded polystyrene) to obtain impregnating compounds at the molecular level by carrying out their joint destruction and applying wood products for protective treatment. Obtained wood-polymer composites from natural wood (birch) and wood fiber boards (DVP) were investigated for resistance to water and moisture. Indicators of tests of wood for water absorption and swelling in the radial and tangential directions indicate that the samples under investigation have increased hydrophobic properties. Modified fiberboards acquire, in addition to increased hydrophobic properties and higher strength parameters. This is due to the cross-linking of oligomer molecules in wood structures with the formation of a wood-polymer framework and the formation of hydrogen and ether bonds between the wood components and the oxidized modified oligomer. The formation of such bonds makes it possible to reduce such a shortage of impregnating compositions as washability from products during their operation. Reducing the uncertainty of the oligomeric modifier reduces its hydrophilic properties. Integrated use of waste and by-products allows to purposefully dispose of them and use them for protective processing of materials, which include wood components, which contributes to the increase of the service life of products.

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The production of high-molecular compounds requires improvement in manufacturing technology. Promising instrumentation of technological processes, new raw materials are being introduced, that in some cases makes it possible to improve the composite materials, use valuable hydrocarbon raw materials more fully and efficiently, and reduce the pressure on the environmental. All this applies to the production of synthetic rubbers. It is important to select new coagulating systems used in the technology of rubber separation from latex, since the coagulation stage is one of the most material-intensive and energy-intensive and problematic from an environmental perspective. In this paper, we studied the possibility of using a beet-sugar production by-product - beet molasses - in the technology for producing styrene-butadiene rubber of the SKS-30 ARK brand to reduce the aggregative stability of latex systems. The completeness of rubber separation was achieved at consumption of 200 kg / t and sulfuric acid consumption of 15 kg / t of rubber. In this case, the pH of the system increased from 3 to 5.5. Increasing the consumption of sulfuric acid to 40 kg / t of rubber allowed reducing the consumption of molasses to 90 kg / t of rubber and stabilizing the acidity of the coagulated system. Synergism in the action of these components was established for the first time and allowed reducing the consumption of coagulating agent by 2–3 times. Synergism of these components was first established and allowed reducing the consumption of a coagulating agent by a factor of 2–3. Based on the rubber obtained, rubber mixtures were prepared using standard components and vulcanized. Rubber based on SKS-30 ARK meets the requirements.

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