Study On Synthesis And Application Of Amino-cyanogens

Synthesis and application of amino-cyanogen bleaching activators were studied in the thesis. Research status and bleaching activation's mechanism of bleaching were described. Amino-cyanogen , such as M-SJA, Trimethylamine-SJA, Triethylamine-SJA, Pyridine-SJA, Acetic-SJA, Betain-SJA and alkyl benzoyloxy-4-bensulfonic sodium were synthesized, identified via IR and MS. Bleaching mechanism of bleaching activators were carried through theoretical analysis. Bleaching activation of amino-cyanogen bleaching activators was studied by UV and spectrophotometer. Effluence of amino-cyanogen bleaching activators to variety trend of absorbency of alizarin and tea flavin solution was examined and analyzed by spectrophotometer, it was concluded that decomposing of alizarin and tea flavin solution accelerated when pH of the solution was higher.Analysis and study of alizarin smear fabric were especially carried through in the thesis. Effect of bleaching activators was analyzed by washing alizarin smear fabric in different low temperature, it was proved that M-SJA, benzoyloxy-4-bensulfonic sodium were most effect in amino-cyanogen bleaching activators. Through matching Trimethylamine-SJA with Acetic-SJA, matching Trimethylamine-SJA with BBC, matching M-SJA with BBC by weight ratio of 2/1,1/1,1/2 to wash alizarin smear fabric in low temperature, it was concluded that matching Trimethylamine-SJA with Acetic-SJA, matching trimethylamine-SJA with BBC could not show synergistic interaction, but matching M-SJA with BBC could show synergistic interaction distinctly. Activation effect of bleaching activators was also studied by washing fabric soiled with tea flavin,egg, and cotton cloth with aged soil.To compare BBS with BBC, TAED, the latter 2 were commercial bleaching activators, in action of increasing bleaching, alizarin smear fabric was treated with BBS, BBC, and TAED, it was proved that BBS was the best and TAED was the worst among BBS, BBC and TAED at 25℃, and that bleaching action of BBS increased no longer, but BBC increased continually when washing temperature rise from 25℃.Synthetic bleaching activators and studying their property in the thesis could provide some theory for some industry field, such as detergent, printing, dyeing, paper making, textile, et al, which related with bleaching at low temperature.