MULTILAYERED SORPTION-FILTERING MATERIAL Russian patent published in 2008 - IPC B01D39/16 B01J20/28 

FIELD: chemical industry; other industries; methods of production of the multilayered sorption-filtering materials.

SUBSTANCE: the invention is pertaining to the field of production of the bonded fabrics, in particular, to the multilayered sorption-filtering bonded fabrics produced by the aerodynamic molding out of the solutions of the polymers containing the solid sorption filling agents. The multilayered sorption-filtering material consists of 4-6 layers of the bonded fabric made out of the containing the solid sorption particles of the filament produced out of the mixture of the polyurethane and polyacrylonitrile by the method of the aerodynamic molding of the polymer solution. At that and the mass ratio of the polyurethane to the polyacrylonitrile in the filament is within the limits from 2 up to 12, and the ratio of the diameter of the filament to the diameter of the solid sorption particles makes 0.5-5.0. At that the ratio of the thickness of one layer to the thickness of the material makes 0.1-0.3. The multilayer material has the complex of the sorption and sorption-filtering properties and is intended for filtration of the liquids and gases from the impurities.

EFFECT: the invention ensures production of the multilayer material having the complex of the sorption and sorption-filtering properties and intended for filtration of the liquids and gases from the impurities.

2 ex