Polymers containing perfluorovinyl ethers and applications for such polymers

The present invention relates to a fluorochemical composition for rendering fibrous substrates oil repellent, water repellent and/or stain repellent. In particular, the present invention relates to fluorochemical compositions that contain a fluoropolymer having a fluorinated backbone. The invention further relates to fibrous substrates, in particular textile, treated with the fluorochemical composition and to a method of treating the fibrous substrate with the fluorochemical composition. The invention also relates to the use of a fluorochemical composition comprising the fluoropolymer to render a fibrous substrate oil repellent, water repellent or soil repellent or to render soil or stain release properties thereto. A fluorochemical composition for rendering a fibrous substrate oil and/or water repellent which comprises a solution or dispersion of a fluoropolymer having a partially or fully fluorinated backbone and comprising one or more repeating units corresponding to the general formula: wherein Rrepresents a perfluorinated organic group having a chain length of at least 2 atoms and having at least one carbon atom and optional auxiliary components.