Processes for separating cesium from industrial streams containing other
alkali metals using poly(hydroxyarylene) polymeric resins
    15.
    发明授权
    Processes for separating cesium from industrial streams containing other alkali metals using poly(hydroxyarylene) polymeric resins 失效
    使用聚(羟基亚芳基)聚合物树脂从含有其它碱金属的工业流中分离铯的方法

    公开(公告)号:US5656702A

    公开(公告)日:1997-08-12

    申请号:US334789

    申请日:1994-11-04

    摘要: A method for the removal separation, and concentration of cesium cations from a source solution which may contain larger concentrations of other alkali metal ions comprises bringing the source solution into contact with a polymeric resin containing poly(hydroxyarylene) ligands. The poly(hydroxyarylene) ligand portion(s) of the polymeric resins has affinity for cesium, thereby removing cesium from the source solution. The source solutions from which the cesium has been removed may then be treated or disposed of as desired and the cesium cations are then removed from the polymeric resin through contact with a much smaller volume of a receiving solution in which these cesium cations are soluble and has greater affinity for such cations than does the poly(hydroxyarylene) ligand or protonates the ligand, thereby quantitatively stripping the complexed cesium cations from the ligand and recovering them in concentrated form in said receiving solution. The concentrated cesium cations thus removed may be further separated and recovered by known methods. The process is useful in the removal of cesium cations from a variety of source solutions such as from semiconductor, nuclear waste cleanup, metals refining, electric power, and other industrial enterprises. The invention is also drawn to the poly(hydroxyarylene)-ligand-containing polymeric resins.

    摘要翻译: 用于去除分离的方法和从可能含有较大浓度的其它碱金属离子的源溶液中浓缩铯阳离子的方法包括使源溶液与含有聚(羟基亚芳基)配体的聚合物树脂接触。 聚合树脂的聚(羟基亚芳基)配体部分对铯具有亲和性,从而从源溶液中除去铯。 然后可以根据需要处理或处理从其中除去铯的源解决方​​案,然后通过与少量体积的这些铯阳离子可溶并且具有的铯阳离子的接收溶液接触从聚合物树脂中除去铯阳离子 与聚(羟基亚芳基)配体相比,对这些阳离子的亲和性更高,或者使配体质子化,从而定量地从配体中剥离络合的铯阳离子,并将其以浓缩的形式在所述接收溶液中回收。 由此除去的浓缩的铯阳离子可以通过已知的方法进一步分离和回收。 该方法可用于从半导体,核废料清理,金属精炼,电力等工业企业的各种源解决方案中去除铯阳离子。 本发明还涉及聚(羟基亚芳基) - 配体的聚合物树脂。

    Method for simultaneous preparation of bisphenol F and novolak phenol
resins
    17.
    发明授权
    Method for simultaneous preparation of bisphenol F and novolak phenol resins 失效
    同时制备双酚F和酚醛清漆酚树脂的方法

    公开(公告)号:US5395915A

    公开(公告)日:1995-03-07

    申请号:US104920

    申请日:1993-08-12

    摘要: Herein disclosed is a method for simultaneously preparing a highly pure bisphenol F and/or a bisphenol F for general use and a novolak phenol resin and/or a high molecular weight novolak phenol resin comprising the steps of:(1) a preparation step comprising reacting phenol with formaldehyde in the presence of an acid catalyst and removing the acid catalyst, water and the unreacted phenol from the resulting reaction product to give a crude bisphenol F;(2) a distillation step comprising distilling a part of the crude bisphenol F to give a highly pure bisphenol F, as a distillate, having a binuclear moiety-content of not less than 95% by weight and a novolak phenol resin, as a still-bottom product, having a binuclear moiety-content of not more than 15% by area;(3) a step for mixing the highly pure bisphenol F with the remaining crude bisphenol F to give a bisphenol F for general use; and(4) a step for polymerizing the novolak phenol resin with formaldehyde in the presence of an acid catalyst to give a high molecular weight novolak phenol resin.

    摘要翻译: 本文公开了一种用于同时制备用于一般用途的高纯度双酚F和/或双酚F和酚醛清漆酚醛树脂和/或高分子量酚醛清漆酚树脂的方法,包括以下步骤:(1)制备步骤,包括使 苯酚与甲酸在酸催化剂存在下,从所得反应产物中除去酸催化剂,水和未反应的苯酚,得到粗双酚F; (2)蒸馏步骤,包括蒸馏粗双酚F的一部分,得到作为蒸馏物的高纯度双酚F,双核部分含量不小于95重量%,酚醛清漆酚树脂作为静止物 双产物,双核部分含量不超过面积的15%; (3)将高纯度双酚F与剩余的粗双酚F混合以得到通常使用的双酚F的步骤; 和(4)在酸催化剂存在下使酚醛清漆酚醛树脂与甲醛聚合的步骤,得到高分子量酚醛清漆酚醛树脂。

    Spherical particles of thermosetting phenolic resin and process for
producing the same
    20.
    发明授权
    Spherical particles of thermosetting phenolic resin and process for producing the same 失效
    热固性酚醛树脂的球形颗粒及其制备方法

    公开(公告)号:US4839445A

    公开(公告)日:1989-06-13

    申请号:US141167

    申请日:1988-01-06

    CPC分类号: C08J3/16 C08J2361/06

    摘要: The present invention relates to a process for producing spherical thermosetting phenolic resin particles having a size of no larger than about 1,000 microns, and the spherical thermosetting phenolic resin particles produced by this process.In accordance with the process of the present invention, a novolak resin, and a nitrogenous basic compound, and, optionally, an aldehyde, are reacted while they are suspended in an aqueous medium in the presence of a suspension stabilizer.The thermosetting phenolic resin produced by the process of the present invention not only displays superior thermal curing characteristics during molding; the cured product fabricated by molding this resin also exhibits good physical properties such as improved mechanical strength and heat resistance. Therefore, the spherical thermosetting phenolic resin particles produced by the process of the present invention can be extensively used as molding materials, binders, adhesives, and in many other applications.

    摘要翻译: 本发明涉及一种制造尺寸不大于约1,000微米的球形热固性酚醛树脂颗粒的方法和通过该方法制备的球形热固性酚醛树脂颗粒。 根据本发明的方法,在悬浮稳定剂存在下将酚醛清漆树脂和含氮碱性化合物以及任选的醛反应在水性介质中。 通过本发明的方法制备的热固性酚醛树脂不仅在成型期间显示出优异的热固化特性; 通过模塑该树脂制造的固化产物也表现出良好的物理性能,例如改进的机械强度和耐热性。 因此,通过本发明的方法制造的球形热固性酚醛树脂颗粒可以广泛用作模塑材料,粘合剂,粘合剂以及许多其它应用。