| 摘要 |
<p>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 independently1 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.</p> |
