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    • 8. 发明申请
    • LOW-SODIUM RESIN
    • 低钠树脂
    • WO2018044702A1
    • 2018-03-08
    • PCT/US2017/048542
    • 2017-08-25
    • ROHM AND HAAS COMPANY
    • ROHANNA, John C.SCHULTZ, Alfred K.
    • B01J41/05B01J47/06B01J47/016B01J49/08B01J49/07C08J5/20C08J5/22B01J49/57B01J49/09
    • Provided is a method of removing sodium from a collection of sodium-laden resin beads comprising the steps of (a) providing the collection of sodium-laden resin beads, wherein the resin beads comprise one or more vinyl polymers having quaternary ammonium groups; wherein cation exchange resin, if present in the collection of resin beads, are present in an amount of 0 to 0.5% by weight based on the weight of the collection of resin beads; wherein 90 mole % or more of the quaternary ammonium groups are each associated with a hydroxide anion; wherein sodium is present in an amount of more than 100 ppb by weight, based on the weight of the collection of sodium-laden resin beads, and (b)bringing the collection of sodium-laden resin beads into contact with aqueous ammonium hydroxide to form a mixture (b).
    • 提供了一种从含有钠的树脂珠粒中除去钠的方法,其包括以下步骤:(a)提供含有钠的树脂珠粒的集合,其中所述树脂珠粒包含一种或多种乙烯基 具有季铵基团的聚合物; 其中阳离子交换树脂(如果存在于树脂珠粒的集合中)以基于树脂珠粒的集合的重量的0至0.5重量%的量存在; 其中90摩尔%或更多的季铵基团各自与氢氧根阴离子缔合; 其中基于负载钠的树脂珠粒的重量,钠的存在量大于100ppb(重量),和(b)使含钠的树脂珠粒的收集与氢氧化铵水溶液接触以形成 混合物(b)。