then placed in a 50 u00b0 c bath with continued stirring after 18 hours the mixture was cooled and treated with methanol 200ml the white solid product 4 5g 90 was collected via filtration and dried under vacuum at 50 u00b0 c an aliquot of the polymer was coated onto nylon and treated as above coating procedure white nylon 6 sleeve u02dc 5g was dipped into a ch 2 cl 2 solution 15ml containing the polymer 0 1g to be tested all of the solution was absorbed and worked into the fiber the sleeve was then air dried followed by annealing at 105 u00b0 c for 15 minutes the nylon swatch to be tested was placed in a large petrie dish unsweetened cherry kool aid 30ml was poured from a height of two inches onto the sleeve after standing for 5 minutes the swatch was cleaned with cold tap water and paper towels the samples were allowed to air dry before stain ranking the nylon swatch to be tested was placed in a large petrie dish coffee prepared in a drip coffee maker using 100 ml solid grounds maxwell house adc per liter of water was poured 30 ml 71 u00b0 c from a.