fluorochemical will work in concert with the stain resist chemical to provide optimum oil water and soil repellency in combination with the stain release properties particularly acid colorant desorption of the resist chemical temperature the rate of diffusion of the said stain resist chemical is particularly efficient in the range of 45 u00b0 80 u00b0 c without causing change of shade of the fiber or yarn and the fluorochemical applied finds ideal condition of exhaustion of the dye into the fibers at temperature above 60 u00b0 c this temperature range allows a gentle yet efficient and even exhaustion ph conditions while high temperature creates a favorable medium for the exhaustion of the chemicals low ph conditions facilitate their fixation to wool fibers by ionic hydrogen and covalent bonding a ph range of 2 0 2 5 minimizes the yellowing effect often associated with sulphonated compounds the tip sealing process is particularly useful to enhance the overall performance of the stain resistance and stain release characteristics on wool carpets particularly for cut pile carpets it is novel to use polymethacrylic resin without rinsing without the fear of yellowing this coupled with a fluoroaliphatic polymer containing a surfactant facilitates penetration by migration that the compound as described can be applied by spraying or by foaming is significant by way of example only tests of woolen carpet samples treated.