METHOD OF SYNTHESIS OF POLYCAPROAMIDE GRAFTED COPOLYMER Russian patent published in 1998 - IPC

FIELD: technology of synthetic materials. SUBSTANCE: grafted copolymer of polycaproamide is synthesized by treatment of activated polycaproamide fiber with a monomer - glycidylmethacrylate at heating and at ratio of fiber mass to treatment solution = 1:30 followed by washing out with water and drying. Additionally, the grafted copolymer of polycaproamide is phosphorylated with 5-25-% solution of 1-hydroxyethylidenephosphonic acid at heating for 4-5 h followed by washing out with water and drying. Synthesized copolymer is used for making hemosorption fibers for sewage treatment from metal ions. EFFECT: increased static exchange volume of cathionite and extraction degree of metal ions from sewage. 1 tbl, 9 ex