Process for increasing the yield of purified isophthalic acid and reducing waste-water treatment a
作者： Rose M. Janulis
DOI:
关键词: Organic chemistry 、 Nuclear chemistry 、 Sewage treatment 、 Scientific method 、 Improved method 、 Yield (chemistry) 、 Isophthalic acid 、 Solvent 、 Chemistry 、 Dissolution 、 Mother liquor
摘要: The invention is an improved method of purification isophthalic acid comprising recycling a portion the mother liquor solution into feed process. comprises following steps: (a) dissolving crude in polar solvent at temperature from about 100° C. to 300° C.; (b) crystallizing by cooling step 35° 120° (c) separating crystals and drying crystals; (d) remaining after separation back solution.
lens.org 参考文章(3)
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Eric N. Stech, J. Frederick Bates, Mark S. Montgomery, Process for the manufacture of aromatic polycarboxylic acids having delta Y values below ten ,(1981)