COMPOSITE MATERIAL Russian patent published in 2003 - IPC

FIELD: manufacture of material used for producing technical and special-purpose articles. SUBSTANCE: composite material comprises nonwoven layer comprising anion-exchange filament and knitted base. Nonwoven layer is manufactured from modified filament based on grafted copolymer of polycaproamide and polydiethylaminoethyl methacrylate. Knitted base is made from blend yarn comprising modified filament based on grafted copolymer of polycaproamide and polyglycidyl methacrylate phosphorylated with 1-oxyethyliden diphosphonic acid, and filaments of Dacron used in an amount of 20-30 wt%. Volumetric ratio of base and nonwoven layer is (0.7- 0.8):1. Composite material may be used as fibrous sorbent. EFFECT: improved operating characteristics of composite material by improved thermal stability and sorptive capacity, and wider range of articles manufactured from such material. 1 tbl, 3 ex