Abstract
Combinations of ethylene urea and paraformaldehyde with different mol ratios are used as source materials to synthesize a DMEU/MMEU resin prepolymer in various mixing ratios. The DMEU/MMEU resin prepolymer is then applied to the crease-resistant finish of cotton fabrics. The results show that the dry and wet crease-recovery angles and nitrogen and free formaldehyde contents increase with increasing curing time, curing temperature, and mol ratio of paraformaldehyde, while the tensile strength retention decreases. Optimized relations between both physical and chemical properties can be obtained by mixing the source materials in a 1 : 1.5–1 : 1.7 ratio, drying at 80°C for 5 min, and curing at 150°C for 3 min. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 390–395, 2000
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