Patent ID: 8318869

Claim:
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): and (C) at least one crosslinking agent selected from blocked isocyanates, wherein the amount of (A) is from 55% to 70% by weight, with respect to the total weight of (A), (B) and (C), wherein the amount of (B) is from 8% to 25% by weight, with respect to the total weight of (A), (B) and (C), and wherein the amount of (C) is from 20% to 25% by weight, with respect to the total weight of (A), (B) and (C).