OBTAINING, STUDYING OF THE COMPOSITION AND PROPERTIES OF ROSINTERPENESTYROLEMALEIC RESINS
Currently, rosin and turpentine are severely deficient and expensive products due to the global production crisis. The level of development of rosin-turpentine production is determined by the need of many sectors of the national economy for rosin and turpentine and products based on them. Each new period of rosin-turpentine production put forward its demands and tasks to industry and science. All studies took place in two main areas: replacing gum rosin with highly effective products based on extraction and tall oil rosin and developing substitutes based on chemical and petrochemical raw materials. For the first time in the world practice of forest chemistry, it was proposed to obtain new maleic resins - rosinterpenestyrolemaleic - rosin substitutes obtained by treating a mixture of terpentine and styrene of maleic anhydride. To determine the composition of the adducts, the methods of IR and NMR spectroscopy were used. The resulting product may be multicomponent alloys of maleopimaric acid, adducts of terpene hydrocarbons with maleic anhydride, styrenemaleic adduct and resin acids that do not react with maleic anhydride. The adducts can be a valuable forest chemical raw material for the synthesis of the corresponding esters, resinates, imides, etc. Thus, we have developed a completely new effective wood-chemical product that surpasses the well-known pine oleorosin and terpenomaleic and rosinterpenomaleic adducts and is not inferior in its physical and chemical properties to rosinmaleic adduct.