Soil resist additive

A method for providing soil resistance to substrates comprising contacting the substrate with a single medium comprising a mixture of 1) at least one soil resist agent comprising a fluorinated polyurethane containing a perfluoroalkyl group of the following formula Rf(CH2)n— wherein Rf is a straight or branched perfluoroalkyl with six or less carbon atoms, and wherein n is an integer of from 1 to about 6, or a mixture thereof, wherein the perfluoroalkyl is optionally interrupted by at least one oxygen atom or methylene, and wherein the polyurethane is prepared using a cyclic isocyanate, and 2) at least one additive which is maleic anhydride.

A substrate to which has been applied from a single medium a composition comprising a mixture of 1) at least one soil resist agent comprising a fluorinated polyurethane containing a perfluoroalkyl group of the following formula Rf(CH2)n— wherein Rf is a straight or branched perfluoroalkyl with six or less carbon atoms, and wherein n is an integer of from 1 to about 6, or a mixture thereof, wherein the perfluoroalkyl is optionally interrupted by at least one oxygen atom or methylene, and wherein the polyurethane is prepared using a cyclic isocyanate, and 2) maleic anhydride.