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    • 44. 发明授权
    • Process for producing an amino acid-N, N-diacetic acid and its salts
    • 制备氨基酸-N,N-二乙酸及其盐的方法
    • US06527931B2
    • 2003-03-04
    • US09983912
    • 2001-10-26
    • Nobuyoshi NambuMasanori FurukawaMakoto SaitoTohru Yamamoto
    • Nobuyoshi NambuMasanori FurukawaMakoto SaitoTohru Yamamoto
    • B01D6142
    • C07C227/18B01D61/44C07C227/40C11D3/33C07C229/16C07C229/24
    • An amino acid-N,N-diacetic acid (AADA) or its salt with an equivalent or less of an alkali metal is produced by reducing, through electrodialysis, alkali metal ions from an aqueous solution of the alkali metal salt of an AADA. By this configuration, an AADA salt can be produced in a much higher yield than conventional equivalents without requiring a regeneration operation of a resin as in the use of an ion exchange resin or without requiring crystallization-separation of crystals of the AADA salt as in the addition of an organic solvent. A salt of an amino acid-N,N-diacetic acid is also produced by reacting an AADA with any of metal oxides, metal hydroxides, metal carbonates, metal hydrogencarbonates, ammonium hydroxide, ammonium carbonate, ammonium hydrogencarbonate or organic amine compounds. By this configuration, a metal salt, aromonium salt or organic amine salt of an AADA can be produced with efficiency without the formation of by-products.
    • 通过电渗析从AADA的碱金属盐的水溶液中还原碱金属离子,生成氨基酸-N,N-二乙酸(AADA)或其等同物或碱金属的盐。 通过这种构造,可以以比常规等同物高得多的产率生产AADA盐,而不需像使用离子交换树脂那样进行树脂的再生操作,或者不需要像在 加入有机溶剂。 氨基酸-N,N-二乙酸的盐也通过使AADA与金属氧化物,金属氢氧化物,金属碳酸盐,金属碳酸氢盐,氢氧化铵,碳酸铵,碳酸氢铵或有机胺化合物中的任一种反应而产生。 通过这种构造,可以有效地生产AADA的金属盐,芳香盐或有机胺盐,而不会形成副产物。
    • 47. 发明授权
    • Process for producing ascorbic acid-2-phosphoric ester salts
    • 生产抗坏血酸-2-磷酸酯盐的方法
    • US06344567B1
    • 2002-02-05
    • US09629169
    • 2000-07-31
    • Yoshio FujiwaraYuji KobayashiMakoto Saito
    • Yoshio FujiwaraYuji KobayashiMakoto Saito
    • C07F902
    • C07F9/65515
    • A process for producing an ascorbic acid-2-phosphoric ester salt, where an ascorbic acid-2-phosphoric ester salt solution reduced in the content of excess phosphoric acid or a salt thereof mingled in the solution can be obtained from a solution containing an ascorbic acid-2-phosphoric ester or a salt thereof and a phosphoric acid or a salt thereof, with industrially high efficiency. A process for producing an alkaline earth metal salt of an ascorbic acid-2-phosphoric ester, comprising adding an alkaline earth metal compound to a stock solution containing an ascorbic acid-2-phosphoric ester or a salt thereof and a phosphoric acid or a salt thereof, at a liquid temperature of 0 to 30° C. to adjust the pH to 8.5 to 10.5.
    • 一种生产抗坏血酸-2-磷酸酯盐的方法,其中抗坏血酸-2-磷酸酯盐溶液中减少过量磷酸的含量或其混合在溶液中的盐可由含抗坏血酸的溶液 酸-2-磷酸酯或其盐和磷酸或其盐,工业上的高效率。 一种生产抗坏血酸-2-磷酸酯的碱土金属盐的方法,包括向含有抗坏血酸-2-磷酸酯或其盐和磷酸或盐的储备溶液中加入碱土金属化合物 在0〜30℃的液温下调节pH至8.5〜10.5。