VERFAHREN ZUR HERSTELLUNG VON NATRIUMPERCARBONAT

    公开(公告)号:EP0944549B1

    公开(公告)日:2011-03-30

    申请号:EP97951852.9

    申请日:1997-12-12

    IPC分类号: C01B15/10

    摘要: The invention relates to a novel method for the 'dry' production of sodium percarbonate (dry process). Monohydrate crystal is reacted with a quasi-stoichiometric quantity of concentrated aqueous hydrogen peroxide solution, in relation to the quantity of active oxygen required in the sodium percarbonate. This method can be combined to great advantage with the subsequent compaction of the sodium percarbonate obtained. Sodium percarbonate products containing varying concentrations of active oxygen of at least 10 weight percent, but in particular with high active oxygen concentrations of above 14.5 weight percent, can be produced. The resulting sodium percarbonate products are characterized in that they have remarkably advantageous characteristic as regards dissolution rate, stability and compatibility with detergent base, and are superior to conventional sodium percarbonates obtained, for example, by a crystallisation process. The invention also relates to said percarbonate sodium products and detergent compounds containing same.

    摘要翻译: 本发明涉及一种“干”生产过碳酸钠的新方法(干法)。 相对于过碳酸钠所需的活性氧量,一水合物晶体与准化学计量的浓过氧化氢水溶液反应。 这种方法可以结合使用,以获得随后的过碳酸钠压实。 可以产生含有至少10重量%的变化浓度的活性氧,特别是具有高于14.5重量%的高活性氧浓度的过碳酸钠产品。 所得到的过碳酸钠产品的特征在于它们在溶解速率,稳定性和与洗涤剂基质的相容性方面具有显着有利的特性,并且优于例如通过结晶过程获得的常规过碳酸钠。 本发明还涉及所述过碳酸钠产品和含有其的洗涤剂化合物。