| 摘要 |
A CONTINUOUS METHOD OF BLEACHING AN ALKYLPOLYGLYCOSIDE, SUBSTANTIALLY FREE ALCOHOL, WITH PEROXY COMPOUNDS, PEFERABLY HYDROGEN PEROXIDE, WHICH IS HIGHLY EFFICIENT TO PROVIDE AN UNEXPECTED HIGH DEGREE OF COLOR REDUCTION FROM A DARK BROWN TO A LIGHT, WHICH PRODUCT, FROM AN EXTINCTION COEFFICIENT COLOR RESPECTIVELY OF ABOUT 10 TO ABOUT 15 TO ABOUT 0.025 TO ABOUT 0.15. THE BLEACHING IS CARRIED OUT AT CONTROLLED PH AND TEMPERATURE, UNDER PRESSURE PREFERABLY INTHE PRESENCE OF Mg. THE USE OF A PREBLEACHED HEEL OR FEED PRIOR TO INTRODUCTION OF THE UNBLEACHED MATERIAL TO BE BLEACHED RESULTS IN A FASTERAPPROACH TO EQUILIBRIUM, STEADY STATE, BLEACHING CONDITIONS WHICH RESULTS IN MINIMUM CHEMICAL USAGE AND MORE RAPID PRODUCTION OF LOW COLOR.
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