METHOD OF OBTAINING GRAFTED SILOXANE COATINGS WITH SORPTION N-AMINODI(METHYLENEPHOSPHONIC) GROUPS ON FIBRES AND MODIFIED FIBROUS MATERIALS Russian patent published in 2015 - IPC D06M15/643 C09D183/08 C08G77/26 

FIELD: chemistry.

SUBSTANCE: at first stage method includes processing fibres with alcohol solution of oligo(aminopropyl)ethoxysiloxane, removal of solvent, protonation of modified surface with HCL water solution and drying, at second stage - obtaining of N-propylaminodi(methylenephosphonic) acid on protonated surface by boiling with paraform and H₃PO₃ in benzene and diglyme medium, distillation of azeotrope, washing fibres with diglyme and ethanol and drying at 100°C. Material from organic and inorganic fibre in form of monofibre, complex thread, tape, yarn, fabric, non-woven cloth, and knitted fabric is used as fibrous material. Invention provides adding fibre sorption properties, characteristic of grade of phosphorus-containing sorbents.

EFFECT: processed fibres possess combination of unique sorption and exploitation properties, as they are selective sorbents for a number of non-ferrous metals, rare earth elements, uranium, actinoids, which makes them promising sorbents for many branches of industry.

4 cl, 2 dwg, 3 tbl