C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/14 (2006.01) C08F 220/04 (2006.01)
Patent
CA 2704760
A method of providing water repellency, oil repellency, soil resistance, soil release, stain resistance and stain release to substrates comprising contacting said substrate with a composition comprising a copolymer having repeating units of Formula 1 in any sequence: wherein Rf is a straight or branched perfluoroalkyl group having from about 2 to about 8 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom, Q is alkylene of 1 to about 15 carbon atoms, hydroxyalkylene of 2 to about 15 carbon atoms, -0(CnH2n)-, -(CH2CF2)m(CH2)n-, -CONR1(CnH2n)-, - (CnH2n)OCONR1(CnH2n)-, (-CONR1CH2)2CH-, -SO2N(R1)(CnH2n)-, or -(CnH2n) SO2N(R1)(CnH2n)-, each R1 is independently H or alkyl of 1 to about 4 carbon atoms, each n is independentlyl to about 15, each m is independently 1 to about 4, Z is hydrogen or methyl, x is a positive integer, y is zero or a positive integer, t is a positive integer, and M is H+, alkali metal cation, alkaline earth metal cation, or ammonium. A method of providing water repellency, oil repellency, soil resistance, soil release, stain resistance and stain release to substrates comprising contacting said substrate with a composition comprising a copolymer having repeating units of Formula 1 in any sequence: Image wherein Rf is a straight or branched perfluoroalkyl group having from about 2 to about 8 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom, Q is alkylene of 1 to about 15 carbon atoms, hydroxyalkylene of 2 to about 15 carbon atoms, -O(CnH2n)-, -(CH2CF2)m(CH2)n-, -CONRl (CnH2n)-, -(CnH2n)OCONRl (CnH2n)-, (-CONRlCH2)2CH-, -S02N(Rl)(CnH2n)-, or -(CnH2n) SO2N(Rl)(CnH2n)-, each R1 is independently H or alkyl of 1 to about 4 carbon atoms, each n is independentlyl to about 15, each m is independently 1 to about 4, Z is hydrogen or methyl, x is a positive integer, y is zero or a positive integer, t is a positive integer, and M is H+, alkali metal cation, alkaline earth metal cation, or ammonium.
La présente invention concerne un procédé destiné à conférer un caractère hydrofuge, oléofuge, résistant à la salissure, antisalissure, résistant aux taches et antitache à des substrats, le procédé comprenant la mise en contact dudit substrat avec une composition comprenant un copolymère ayant des unités répétées de formule 1 dans tout ordre : dans laquelle Rf est un groupe perfluoroalkyle linéaire ou ramifié ayant d'environ 2 à environ 8 atomes de carbone, ou un mélange de ceux-ci, qui est facultativement interrompu par au moins un atome d'oxygène, Q est un groupe alkylène ayant de 1 à environ 15 atomes de carbone, un groupe hydroxyalkylène ayant de 2 à environ 15 atomes de carbone, -O(CnH2n)-, -(CH2CF2)m(CH2)n-, -CONR1(CnH2n)-, -(CnH2n)OCONR1(CnH2n)-, (-CONR1CH2)2CH-, -SO2N(R1)(CnH2n)-, ou -(CnH2n) SO2N(R1)(CnH2n)-, chaque R1 est indépendamment H ou un groupe alkyle ayant de 1 à environ 4 atomes de carbone, chaque n vaut indépendamment de 1 à environ 15, chaque m vaut indépendamment de 1 à environ 4, Z est un atome d'hydrogène ou un groupe méthyle, x est un nombre entier positif, y vaut zéro ou est un nombre entier positif, t est un nombre entier positif, et M est H+, un cation de métal alcalin, un cation de métal alcalino-terreux, ou un groupe ammonium.
Flatter Jessica Louise Nee Sinks
Murphy Peter Michael
Wang Ying
E.i. Du Pont de Nemours And Company
Torys Llp
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