FLUORINATED POLYURETHANE COMPOSITION

摘要

The invention pertains to a composition useful for imparting durable stain repellence and soil release properties to textile substrates, said composition comprising: (A) at least one fluorinated ionisable polyurethane polymer [polymer (PUR)] comprising at least one fluorinated block comprising a fluoropolyoxyalkene chain [chain (R_of)], and at least one functional block comprising an hydrocarbon chain [chain (R_HC)] having from 2 to 14 carbon atoms, optionally comprising one or more aromatic or cycloaliphatic group, said chain (R_HC) comprising at least one ionisable group, said blocks being linked by urethane moieties of formula (I): wherein E is a divalent hydrocarbon carbon group, linear or branched, optionally comprising aromatic rings, said polymer (PUR) being free from perfluoroalkyl chains [chain (R_f)]; (B) at least one fluorocarbon polymer [polymer (F)] comprising at least one perfluoroalkyl chain [chain (R_f)] linked by one or more ester moiety of formula (II) and/or urethane moiety of formula (III) and/or urea moiety of formula (IV): (C) at least one crosslinking agent. Still object of the invention are the use of said composition for treating textile substrates and the textile substrates obtained therefrom.