Yusupova, M.; Mamadjonova , M.; Egamberdiev , S.; Abduvohidov, I. UDK 678.02.678.6 STUDY OF THE PROCESS OF AMINOLYSIS OF SECONDARY POLYETHYLENETEREPHALATE WITH MONOETHANOLAMINE WITHOUT THE PARTICIPATION OF A CATALYST AND ANALYSIS OF THE OBTAINED PRODUCT. STJ NamIET 2026, 11, 134-139.