13 5 preferably about 1 2 6 0 by weight of cyanamide based on the weight of the dried material after drying the treated material is cured at about 140 u00b0 190 u00b0 c for about 1 6 minutes preferably at about 160 u00b0 175 u00b0 c for about 1 4 minutes the following examples illustrate the process of the present invention all parts are by weight unless otherwise indicated a pad bath solution is prepared containing 16 5 by weight of urea and 6 7 by weight of orthophosphoric acid in water to provide an application solution containing 4 moles of urea per mole of phosphoric acid a second pad bath solution is prepared containing 24 7 by weight of urea and 6 7 by weight of orthophosphoric acid in water to provide an application solution containing 6 moles of urea per mole of phosphoric acid the solutions of the above pad baths are applied to 100 cotton broadcloth by padding two dips and two nips to obtain wet pickups of 77 3 and 79 8 respectively based on the weight of the untreated fabric the treated fabrics are dried for 3 minutes at 107 u00b0 c and cured for 3 minutes at 171 u00b0 c the fabrics are then rinsed in water at 25 u00b0 c and dried for 3 minutes at 107 u00b0 c the fabric treated with the first pad bath solution is labeled fabric a and the one treated with the second pad bath solution is labeled fabric b a pad bath solution containing 3 75 by weight of cyanamide in water is prepared and applied to fabrics a and b by.