摘要
The formaidehyde-free finishing agent 4,5-di-hydroxy-1,3-dimethy1-2-imidazolidinone(DMeDHEU)was prepared by the reaction of 1,3-dimethylurea and glyoxal.The reaction rate and equilib-rium conversion in relation to pH value,molar ratio,temperature and catalyst were studied.The conversionto DMeDHEU,catalyzed with citric acid/anhydrousNaAc,reached 95% in 6 hours at 40℃, pH 5.5 andmolar ratio 1.2.
The formaldehyde - free finishing agent 4,5 - dl-hydroxy -1,3 - dimethyl - 2 - imidazolidinone (DMeDHEU) was prepared by the reaction of 1,3 -dlmethylurea and glyoxal. The reaction rate and equilibrium conversion in relation to pH value, molar ratio, temperature and catalyst were studied. The conversion to DMeDHEU, catalyzed with citric acid/anhydrous NaAc, reached 95% in 6 hours at 40℃, pH 5.5 and molar ratio 1.2.
