Repellent fluorochemical compositions

Details Repellent fluorochemical compositions Repellent fluorochemical compositions

D - Textiles, Paper

06

M

D06M 15/576 (2006.01) C08F 214/18 (2006.01) C08G 18/28 (2006.01) C08L 33/16 (2006.01) D06M 15/263 (2006.01) D06M 15/27 (2006.01) D06M 15/277 (2006.01)

Patent

CA 2482489

This invention provides compositions for treating fibrous substrates to render those substrates durably repellent to water and oil and durably resistant to dry soil comprising a 1) fluorochemical urethane formed by reacting a tri- or higher order isocyanate with a fluorochemical monofunctional compound and optionally a non-fluorinated aliphatic monofunctional compound; and 2) a fluorochemical polymeric surfactant. The present invention also provides a method of treating fibrous substrates to render those substrates durably repellent to water and oil and durably resistant to dry soil comprising application of the aforementioned composition to a fibrous substrate with optionally one or more stainblocker compounds such as acrylic and methacrylic acid polymers and copolymers, sulfonated phenol-formaldehyde resins, and styrene-maleic anhydride polymers and copolymers, said application of the composition taking place either coincident with or following application of the hydrophilic anti-staining compound or compounds to the substrate. Fibrous substrates treated according to this method and fibrous substrates treated with the aforementioned compositions are also disclosed.

L'invention concerne des compositions pour le traitement de substrats fibreux, visant à rendre ces substrats durablement répulsifs à l'eau et à l'huile et durablement résistants au sol sec, qui comprennent: 1) de l'uréthanne fluorochimique résultant de la réaction entre un isocyanate de rang tri- ou supérieur avec un composé fluorochimique monofonctionnel, et éventuellement un composé monofonctionnel aliphatique non fluoré; et 2) un tensioactif polymère fluorochimique. L'invention concerne également un procédé de traitement de substrats fibreux, visant à rendre ces substrats durablement répulsifs à l'eau et à l'huile et durablement résistants au sol sec, qui consiste à appliquer aux substrats la composition décrite, éventuellement avec un ou plusieurs composés anti-tâches du type polymères et copolymères d'acide acrylique et méthacrylique, résines de phénol-formaldéhyde sulfonées, et polymères et copolymères de styrène-anhydride maléique, simultanément avec l'application de composé(s) hydrophile(s) anti-tâches aux substrats, ou après cette application. L'invention concerne enfin des substrats fibreux traités selon ce procédé et des substrats fibreux traités au moyen des compositions susmentionnées.

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