会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Process for producing sodium percarbonate
    • 生产过碳酸钠的方法
    • US06231828B1
    • 2001-05-15
    • US09142940
    • 1998-12-23
    • Alun P. JamesGraham R. HorneRichard RoeslerLido SignoriniRobert OwenSoraya ParvanehRomano PardiniStefano BiginiManfred MathesUwe DrostePier-Luigi Deli
    • Alun P. JamesGraham R. HorneRichard RoeslerLido SignoriniRobert OwenSoraya ParvanehRomano PardiniStefano BiginiManfred MathesUwe DrostePier-Luigi Deli
    • C01B1510
    • C11D3/3942C01B15/103C11D3/128
    • Sodium percarbonate is traditionally made in a crystallization process from aqueous hydrogen peroxide and sodium carbonate with recycle of mother liquor in the presence of a substantial concentration of a salting-out agent, conventionally sodium chloride. The invention provides a process intended to be conducted without addition of chloride salting-out agent in which the dissolution step (1) is controlled to restrict the sodium carbonate concentration to below 95%; preferably 60 to 90% of its saturated concentration at a temperature preferably controlled to at most 35° C. and the mole ratio of hydrogen peroxide: sodium carbonate in the reaction vessel is controlled to between 0.7 to 1.2:1, and preferably about 1:1. In some embodiments at least a fraction of the mother liquor introduced into the dissolution tank (1) is obtained by extraction from the reaction vessel (6) and in other embodiments a fraction of the sodium percarbonate (2) is introduced in solution in the mother liquor (4) and a fraction is introduced in particulate form (8) directly into the reaction vessel (6). Large particle sodium percarbonate is provided which has a 7 day aged heat emission at 40° C. of not more than 3 &mgr;W/g measured in a microcalorimeter over 16 hours that is lower than the heat emission from conventionally produced sodium percarbonate employing a chloride salting-out agent.
    • 传统上,过碳酸钠通过过氧化氢和碳酸钠水溶液的结晶过程在母液中,在大量浓度的盐析剂,常规氯化钠存在下进行。 本发明提供了一种在不加入氯化物盐析剂的情况下进行的方法,其中控制溶解步骤(1)以将碳酸钠浓度限制在95%以下; 优选其饱和浓度的60至90%,优选控制在至多35℃,反应容器中过氧化氢:碳酸钠的摩尔比控制在0.7至1.2:1之间,优选约1: 1。 在一些实施方案中,通过从反应容器(6)中提取,获得引入溶解槽(1)的至少一部分母液,在其它实施方案中,将过量碳酸钠(2)的一部分引入母体溶液中 液体(4)和一部分颗粒形式(8)直接引入反应容器(6)。 提供大颗粒过碳酸钠,其在40℃下具有7天以上的热释放度,其在微量热计中在16小时内测量的不超过3μW/ g,低于常规制备的过碳酸钠使用氯化物盐析 -out代理。
    • 2. 发明授权
    • Sodium percarbonate and process for producing sodium percarbonate
    • 过碳酸钠和生产过碳酸钠的方法
    • US06482385B2
    • 2002-11-19
    • US09794122
    • 2001-02-28
    • Alun P. JamesGraham R. HorneRichard RoeslerLido SignoriniRobert OwenSoraya ParvanehRomano PardiniStefano BiginiManfred MathesUwe DrostePier-Luigi Deli
    • Alun P. JamesGraham R. HorneRichard RoeslerLido SignoriniRobert OwenSoraya ParvanehRomano PardiniStefano BiginiManfred MathesUwe DrostePier-Luigi Deli
    • C01B1510
    • C11D3/3942C01B15/103C11D3/128
    • Sodium percarbonate is traditionally made in a crystallization process from aqueous hydrogen peroxide and sodium carbonate with recycle of mother liquor in the presence of a substantial concentration of a salting out agent, conventionally sodium chloride. The invention provides a process intended to be conducted without addition of chloride salting-out agent in which the dissolution step is controlled to restrict the sodium carbonate concentration to below 95%, preferably 60 to 90% of its saturated concentration at a temperature preferably controlled to at most 35C. and the mole ratio of hydrogen peroxide:sodium carbonate in the reaction vessel is controlled to between 0.7 to 1.2:1, and preferably about 1:1. In some embodiments at least a fraction of the mother liquor introduced into the dissolution tank is obtained by extraction from the reaction vessel and in other embodiments a fraction of the sodium percarbonate is introduced in solution in the mother liquor and a fraction is introduced in particulate form directly into the reaction vessel. Large particle sodium percarbonate is provided which has a 7 day aged heat emission at 40C. of not more than 3 &mgr;W/g measured in a microcalorimeter over 16 hours that is lower than the heat emission from conventionally produced sodium percarbonate employing a chloride salting-out agent.
    • 传统上,过碳酸钠通过过氧化氢水溶液和碳酸钠的结晶过程进行,在过量的盐析剂(常规氯化钠)存在下,再循环母液。 本发明提供一种在不加入氯化物盐析剂的情况下进行的方法,其中控制溶解步骤以将碳酸钠浓度限制在其饱和浓度的95%以下,优选60%至90%,优选控制在 最多35℃。 并且将反应容器中过氧化氢:碳酸钠的摩尔比控制在0.7至1.2:1之间,优选约1:1。 在一些实施方案中,通过从反应容器中萃取而获得引入溶解槽的至少一部分母液,在其它实施方案中,将过碳酸钠的一部分引入母液中的溶液中,并将一部分以颗粒形式 直接进入反应容器。 提供了大颗粒过碳酸钠,其在40℃下具有7天的发热。 在微量热计中在16小时内测量的,不超过3微瓦/克,低于使用氯化物盐析剂的常规生产的过碳酸钠的散热。
    • 9. 发明授权
    • Peroxidic compositions
    • 过氧化合物
    • US5356606A
    • 1994-10-18
    • US050159
    • 1993-04-27
    • Graham R. HorneNicholas A. Troughton
    • Graham R. HorneNicholas A. Troughton
    • C01B15/12C11D3/39C01B35/12
    • C01B15/123C11D3/394C11D3/3947
    • A composition having improved physical stability comprising an aqueous peroxidic solution of an alkali metal oxyboron compound containing alkali metal to boron in a substoichiometric mole ratio into which there has been introduced an effective stabilizing amount of cyclohexane -1,2-diaminotetra (methylene phosphonic acid) or a water soluble salt thereof. Also a process for enhancing the physical stability of an aqueous peroxidic solution of an alkali metal oxyboron compound containing alkali metal to boron in a substoichiometric mole ratio which is characterized by introducing into the solution an effective stabilizing amount of cyclohexane -1,2-diaminotetra (methylene phosphonic acid) or a water soluble salt thereof.
    • PCT No.PCT / GB91 / 01589 Sec。 371日期:1993年4月27日 102(e)日期1993年4月27日PCT 1991年9月17日PCT公布。 出版物WO92 / 06036 日期:1992年4月16日。具有改进的物理稳定性的组合物,其包含以化学计量摩尔比计含有碱金属与硼的碱金属氧硼化合物的过氧化物水溶液,其中引入有效稳定量的环己烷-1,2 - 二氨基四(亚甲基膦酸)或其水溶性盐。 还提供了一种以亚化学计量摩尔比提高含有碱金属与硼的碱金属氧硼化合物的过氧化氢水溶液的物理稳定性的方法,其特征在于将有效稳定量的环己烷-1,2-二氨基四( 亚甲基膦酸)或其水溶性盐。