METHOD OF APPLYING HYDROPHOBIC AND OLEOPHOBIC COATING TO TEXTILE MATERIAL AND TEXTILE MATERIAL WITH HYDROPHOBIC AND OLEOPHOBIC COATING Russian patent published in 2018 - IPC B41M1/00 

FIELD: textile, paper.

SUBSTANCE: method for applying a hydrophobic and oleophobic coating to a textile material includes holding the textile material in a copolymer solution in supercritical carbon dioxide in a high pressure reactor, characterized in that said solution contains a copolymer containing fluorinated (meth)acrylic hydrophobic units affine to CO₂, and (meth)acrylic functional units containing a functional group, and a cross-linking agent containing at least two functional groups reactive with the functional groups of the copolymer, said cross-linking agent being not part of said copolymer. The invention also relates to a textile material with a hydrophobic and oleophobic coating, having a wetting angle with a drop of water ≥130°, the index in the water-repellent ability test ATCC 22 is above 90 points, the index in the oil resistance test AATSS 118 is 6 points or higher, the vapour permeability in the vapour permeability test according to the standard ATSM E 96 (Procedure B) after modification not less than 0.95 from the result of the unmodified material, retaining water-repellent and oil-repellent properties and vapour permeability after 10 or more washes in a washing machine, carried out according to the standard ISO 6330 procedure, procedure 6A, obtained by the method according to the invention.

EFFECT: method according to the invention makes it possible to obtain a textile material with a hydrophobic and oleophobic coating resistant to repeated washing cycles in a washing machine.

18 cl, 2 dwg