VERFAHREN ZUR WASSER- UND ÖL-ABWEISENDEN BEHANDLUNG EINES GEWEBES ODER VLIESES

• Main Authors: AUDENAERT, FRANS, A, ALLEWAERT, KATHY, E
• Format: Patent
• Language: German
• Published: 15.07.2006
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; LAUNDERING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS

The present invention relates to a method of treating a non-woven substrate or textile, comprising the step of applying to said non-woven substrate or textile a fluorochemical composition comprising a fluoropolymer that comprises: (a) between 25 and 97 mole % of units that can be derived from fluorinated monomer selected from the group consisting of monomers according to the general formula: Rf-X-OC(O)-C(R)=CH2 wherein Rf represents a perfluorinated aliphatic group having 3 or 4 carbon atoms, X is an organic divalent linking group and R represent hydrogen or a lower alkyl group having 1 to 4 carbon atoms; (b) between 3 and 75 mole % of units derived from a chlorine containing comonomer selected from the group consisting of vinylidene chloride, vinyl chloride and mixtures thereof; (c) optionally further units derived from monomers other than a fluorinated monomer and said chlorine containing comonomers; and the amount of units (a), (b) and (c) adding up to 100%, whereby said fluorochemical composition is applied in such amount that the weight of fluoropolymer on said non-woven substrate or textile is not more than 3% by weight based on the weight of said non-woven substrate or textile.