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19 条记录 (耗时 0.017 秒)

    Crosslinked seeded copolymer beads and process of manufacture
    1.
    发明授权
    Crosslinked seeded copolymer beads and process of manufacture 失效
    交联接种共聚物珠粒及其制造方法

    公开(公告)号：US5616622A

    公开(公告)日：1997-04-01

    申请号：US330039

    申请日：1994-10-27

    申请人： William I. Harris ,  Robert L. Sammler

    发明人： William I. Harris ,  Robert L. Sammler

    IPC分类号： B01J39/20 ,  C08F8/36 ,  C08F257/02 ,  B01J39/18 ,  C08F8/18 ,  C08F8/38

    CPC分类号： B01J39/20 ,  C08F257/02

    摘要： Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange resin beads. Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.

    摘要翻译： 接种的阳离子交换树脂珠对氧化降解特别敏感，这导致有机碳碎片的浸出。 通过有效交联包含接种的阳离子交换树脂珠的共聚物，分子量大于1000g / mol的有机碳碎片的可浸出性降低到小于800ppm。 在磺化期间，通过增加砜桥形成或在通过亚烷基桥形成进行磺化之前或通过在形成聚合物珠粒过程中形成种子的共聚物中引入并随后活化可交联的官能团，可以在磺化期间实现交联。

    Crosslinked seeded copolymer beads and process of manufacture
    2.
    发明授权
    Crosslinked seeded copolymer beads and process of manufacture 失效
    交联接种共聚物珠粒及其制造方法

    公开(公告)号：US5585408A

    公开(公告)日：1996-12-17

    申请号：US476529

    申请日：1995-06-07

    申请人： William I. Harris ,  Robert L. Sammler

    发明人： William I. Harris ,  Robert L. Sammler

    IPC分类号： B01J39/20 ,  C08F8/36 ,  C08F257/02 ,  C08F8/38 ,  C08F8/34 ,  C08F8/56

    CPC分类号： B01J39/20 ,  C08F257/02

    摘要： Seeded cation-exchange resin beads are particularly susceptible to oxidative degradation which results in the leaching of organic carbon fragments. The leachability of organic carbon fragments of molecular weights greater than 1000 g/mol is reduced to less than 800 ppm by effectively crosslinking the copolymers that comprise the seeded cation-exchange in beads Crosslinking can be achieved either during sulfonation by increasing sulfone bridge formation or before sulfonation by either alkylene bridge formation or by incorporation and subsequent activation of a crosslinkable functionality in the copolymer that forms the seed in the seeded polymer bead process.

    摘要翻译： 接种的阳离子交换树脂珠对氧化降解特别敏感，这导致有机碳碎片的浸出。 分子量大于1000g / mol的有机碳碎片的可浸出性通过有效地交联包含珠粒中接种的阳离子交换的共聚物而降低到小于800ppm。交联可以在磺化期间通过增加砜桥形成或在 通过亚烷基桥形成或通过在接枝的聚合物珠粒过程中形成种子的共聚物中的可交联官能团的引入和随后的活化来磺化。

    Seeded porous copolymers and ion-exchange resins prepared therefrom
    4.
    发明授权
    Seeded porous copolymers and ion-exchange resins prepared therefrom 失效
    种子多孔共聚物和离子交换树脂

    公开(公告)号：US5231115A

    公开(公告)日：1993-07-27

    申请号：US810948

    申请日：1991-12-19

    申请人： William I. Harris

    发明人： William I. Harris

    IPC分类号： B01J41/14 ,  C08F2/18 ,  C08F257/00 ,  C08F257/02 ,  C08F265/00 ,  C08F265/04 ,  C08J9/28

    CPC分类号： C08J9/286 ,  B01J41/14 ,  C08F257/02 ,  C08F265/04 ,  C08J2351/00

    摘要： The invention concerns preparation of porous copolymer beads by a seeded polymerization process employing gel copolymer seed particles. The process comprises initially providing a plurality of gel-type copolymer seed particles prepared by polymerization of at least one first monovinylidene monomer and a first cross-linking monomer. A second monomer mixture comprising at least one second monovinylidene monomer, a second cross-linking monomer, and a phase-separating diluent is thereafter imbibed by the seed particles and polymerized therein. The process is characterized by selecting the first monovinylidene monomers such that the phase-separating diluent and second monovinylidene monomers are capable of being imbibed by the seed particles in an amount sufficient to form a porous copolymer. The porous copolymer beads produced have stable polymeric structures and good physical properties that render them useful in preparing ion-exchange resins and polymeric adsorbents.

    摘要翻译： 本发明涉及通过使用凝胶共聚物种子颗粒的接种聚合方法制备多孔共聚物珠粒。 该方法首先提供通过至少一种第一单亚乙烯基单体和第一交联单体的聚合制备的多种凝胶型共聚物种子颗粒。 含有至少一种第二单亚乙烯基单体，第二交联单体和分相稀释剂的第二单体混合物随后被种子颗粒吸收并在其中聚合。 该方法的特征在于选择第一单亚乙烯基单体，使得相分离稀释剂和第二单亚乙烯基单体能够以足以形成多孔共聚物的量被种子颗粒吸收。 所生产的多孔共聚物珠粒具有稳定的聚合物结构和良好的物理性能，使其可用于制备离子交换树脂和聚合物吸附剂。

    Reactive resins useful for precious metal recovery
    5.
    发明授权
    Reactive resins useful for precious metal recovery 失效
    用于贵金属回收的活性树脂

    公开(公告)号：US4758413A

    公开(公告)日：1988-07-19

    申请号：US931322

    申请日：1986-11-17

    申请人： William I. Harris ,  James R. Stahlbush

    发明人： William I. Harris ,  James R. Stahlbush

    IPC分类号： B01J41/04 ,  B01J45/00 ,  C01C3/11 ,  C01G7/00 ,  C22B3/42 ,  C22B11/00

    CPC分类号： C01G7/003 ,  C22B3/42 ,  Y02P10/234 ,  Y10S423/14

    摘要： An improved process for the recovery of precious metal values is disclosed. By this process precious metals in the form of anionic complexes are contacted with a weak-base anion exchange resin capable of complexing with the anionic complex. Such weak-base anion exchange resins contain weak-base functionalities derived from linear or cyclic polyaminoalkylene amines which have more than 1 amine moiety and at least 3 carbon atoms in a 1,X-alkylene moiety or moieties separating at least 1 amine moiety from a second amine moiety (i.e., X is an integer greater than 2).

    摘要翻译： 公开了一种用于回收贵金属值的改进方法。 通过该方法，阴离子络合物形式的贵金属与能够与阴离子络合物络合的弱碱性阴离子交换树脂接触。 这种弱碱性阴离子交换树脂含有衍生自线性或环状聚氨基亚烷基胺的弱碱官能团，其在1个X亚烷基部分具有多于1个胺部分和至少3个碳原子，或将至少1个胺部分与 第二胺部分（即，X是大于2的整数）。

    Process for conducting etherification reactions using as catalysts strong-acid, cation-exchange resins prepared under high temperature conditions
    9.
    发明授权
    Process for conducting etherification reactions using as catalysts strong-acid, cation-exchange resins prepared under high temperature conditions 失效
    使用在高温条件下制备的强酸，阳离子交换树脂作为催化剂进行醚化反应的方法

    公开(公告)号：US5663455A

    公开(公告)日：1997-09-02

    申请号：US542154

    申请日：1995-10-12

    申请人： William I. Harris ,  Rex R. Stevens

    发明人： William I. Harris ,  Rex R. Stevens

    IPC分类号： C07C41/06 ,  C07C43/04

    CPC分类号： C07C41/06

    摘要： An improved process for conducting an etherification reaction has been discovered. The process employs a macroporous strong-acid, cation-exchange resin catalyst prepared at a temperature of about 120.degree. C. or higher with a reduced amount of divinylbenzene crosslinker. The etherification catalysts produced in the invention display equivalent or superior catalytic activity than conventional catalysts and are less expensive to produce than conventional catalysts due to reduced amounts of crosslinker.

    摘要翻译： 已经发现了进行醚化反应的改进方法。 该方法采用在约120℃或更高温度下用减少量的二乙烯基苯交联剂制备的大孔强酸阳离子交换树脂催化剂。 本发明中生产的醚化催化剂显示与常规催化剂相当或优异的催化活性，并且由于交联剂的量减少而比常规催化剂生产成本低。