Synthesis and transformations of cooligomers styrene with di-olefins modified by glycidyl ethers of 4-izopropenylphenol

Abstract

The article presents the results of our studies on the synthesis of co-oligomers of styrene and diolefins (butadiene-1,3; isoprene) in the presence of small amounts of a modifying co-monomer - glycidyl ether of 4-isopropenylphenol (GE 4-IF). The process of triple co-oligomerization was carried out in an aromatic solvent (ethylbenzene) in the presence of initia-tor ditrebutyl peroxide (DTBP) (2% per mixture of monomers) at 140°C for 30 hours. The ratio of the solvent to the mixture of monomers was 2:1 wt. The amount of GE4-IF in the reaction mixture varied from 2.5 to 10%. It was found that while using the of butadiene-1,3 and isoprene at the optimal content of GE4-IF 5%, the yields of triple co-oligomers are 98.6% and 90.5%. Co-polymers structured by diethylenetriamine were studied as sorbents for extracting uranium salts from aqueous systems under static conditions (at 25°C). It was found that at pH=8 the degree of extraction of uranyl ions is 90.4%.