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12 条记录 (耗时 0.022 秒)

    High performance, quality controlled bipolar membrane
    1.
    发明授权
    High performance, quality controlled bipolar membrane 失效
    高性能，质量控制双极膜

    公开(公告)号：US4057481A

    公开(公告)日：1977-11-08

    申请号：US689305

    申请日：1976-05-24

    申请人： Lester T. C. Lee ,  Gerald J. Dege ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Gerald J. Dege ,  Kang-Jen Liu

    IPC分类号： C08F8/00 ,  B01D61/44 ,  C08J5/22 ,  C25B13/08

    CPC分类号： B01D61/445 ,  C08J5/2218 ,  C08J5/2243 ,  C08J5/2287 ,  C08J2353/02

    摘要： Improved novel single film bipolar membranes having an ion selectivity above 80% in an electrolyte medium of about one mole, are prepared containing a relatively high amount, i.e. at least 15% of an insoluble cross-linked aromatic polymer. Before the styrenated sheet is chemically functionalized, the film surface is specifically treated, i.e. cleaned to make it more receptive to functional groups, so that the cationic-exchange groups and anion-exchange groups can be introduced homogeneously from each side of the surface-cleaned film, and a single-film bipolar membrane of superior durability, stability, and quality control results.

    摘要翻译： 在约1摩尔的电解质介质中具有高于80％离子选择性的改进的新型单膜双极膜被制备成含有相当高的量，即至少15％的不溶性交联芳族聚合物。 在苯乙烯化片材进行化学官能化之前，对膜表面进行特殊处理，即进行清洁以使其更容易接受官能团，从而阳离子交换基团和阴离子交换基团可以从表面清洁的每一侧均匀地引入 薄膜和具有优异的耐久性，稳定性和质量控制结果的单膜双极膜。

    Stable high performance bipolar membrane with cross-linked functional groups
    3.
    发明授权
    Stable high performance bipolar membrane with cross-linked functional groups 失效
    具有交联官能团的稳定的高性能双极膜

    公开(公告)号：US4355116A

    公开(公告)日：1982-10-19

    申请号：US220568

    申请日：1980-12-29

    申请人： Lester T. C. Lee ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Kang-Jen Liu

    IPC分类号： C08F8/32

    CPC分类号： C08F8/32 ,  C08F2800/20 ,  C08F2810/20

    摘要： Stable single film bipolar membranes of prolonged life and improved performance particularly for use in electrodialysis water splitting process, are prepared by introducing a more stable interface in the membrane structure. After the cationic exchange groups are preformed on an insoluble cross-linked aromatic polymeric matrix, the dissociable anionic exchange groups may be introduced more intimately chemically bonded in position by using multi-functional compounds containing mixed tertiary, secondary and primary amine groups, so that the resulting interface is comparatively more stable, and is less likely to be neutralized, therefore, attaining longer life-time and a higher level of performance.

    摘要翻译： 通过在膜结构中引入更稳定的界面来制备长寿命稳定的单膜双极膜，特别是用于电渗析水分离过程的改进性能。 在阳离子交换基团在不溶性交联的芳族聚合物基质上预成型之后，可以通过使用含有混合的叔胺，仲胺和伯胺基团的多官能化合物，将可离解的阴离子交换基团引入更紧密地化学键合，使得 所得到的界面比较稳定，并且不太可能被中和，因此获得更长的使用寿命和更高的性能水平。

    METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES
    5.
    发明授权
    METHOD OF MAKING PERMSELECTIVE INTERPOLYMER MEMBRANES 失效
    制备各种选择性嵌段共聚物膜的方法

    公开(公告)号：US3948823A

    公开(公告)日：1976-04-06

    申请号：US276993

    申请日：1972-08-01

    申请人： Lester T. C. Lee ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Kang-Jen Liu

    IPC分类号： B01D71/34 ,  B01D71/56 ,  C08L63/04 ,  C08L77/00 ,  C08J9/00

    CPC分类号： C08L63/04 ,  B01D71/34 ,  B01D71/56 ,  C08L77/00

    摘要： Novel cross-linked interpolymer membranes of substantially improved efficiency and durability are prepared from a co-mixture of a hydrophilic polymer of [1, .omega.-alkylene(2,6-diketopiperazine)-1,4-dicarboxamide] and a hydrophobic polymer such as polyvinylidene fluoride, by dissolving these polymers in a suitable solvent, forming films of suitable thickness from the solution and thereafter preferably crosslinking the dissolved mixture.

    摘要翻译： 由[1，ω-亚烷基（2,6-二酮哌嗪）-1,4-二甲酰胺]的亲水性聚合物与疏水性聚合物的共混混合物制备了具有显着提高的效率和耐久性的新型交联互聚物膜， 通过将这些聚合物溶解在合适的溶剂中，从溶液中形成适当厚度的膜，然后优选将溶解的混合物交联。

    Preparation of high performance polyelectrolyte membrane
    7.
    发明授权
    Preparation of high performance polyelectrolyte membrane 失效
    制备高性能聚电解质膜

    公开(公告)号：US4083768A

    公开(公告)日：1978-04-11

    申请号：US689304

    申请日：1976-05-24

    申请人： Lester T. C. Lee ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Kang-Jen Liu

    IPC分类号： C08J5/22 ,  C25B13/08

    CPC分类号： C08J5/2243 ,  C08J2353/02

    摘要： Novel polyelectrolyte membranes of substantially improved efficiency and durability are prepared from a preswollen film containing a relatively high amount of an insoluble cross-linked aromatic polymer. By preswelling the insoluble matrix under controlled conditions preferably to an equilibrium stage, the dissociable ion-exchange groups may be introduced more uniformly onto the aromatic nuclei of the matrix to a desired depth of the film. Controlled penetration of functional groups is important in preparing high performance cationic, anionic membranes as well as bipolar membranes. The membranes so prepared have low electrical resistance, improved current efficiency, undergo negligible degradation and with excellent durability.

    摘要翻译： 从含有相对较多量的不溶性交联芳族聚合物的预乳液膜制备基本提高的效率和耐久性的新型聚电解质膜。 通过将受控条件下的不溶性基质预先优化至平衡阶段，可以将离解的离子交换基团更均匀地引入到基质的芳香核上至膜的所需深度。 官能团的控制渗透在制备高性能阳离子，阴离子膜以及双极膜方面是重要的。 如此制备的膜具有低电阻，改善的电流效率，经历可忽略的降解和优异的耐久性。

    Membrane hydro-metallurgical extraction process
    8.
    发明授权
    Membrane hydro-metallurgical extraction process 失效
    膜水力冶金提取工艺

    公开(公告)号：US3957504A

    公开(公告)日：1976-05-18

    申请号：US522826

    申请日：1974-11-11

    申请人： Win-Sow Ho ,  Lester T. C. Lee ,  Kang-Jen Liu

    发明人： Win-Sow Ho ,  Lester T. C. Lee ,  Kang-Jen Liu

    IPC分类号： C22B3/00 ,  B01D61/24 ,  C01G3/00 ,  C02F1/62 ,  C22B3/20 ,  C22B3/26 ,  C22B3/42 ,  C22B60/02 ,  C30B7/00 ,  C22B15/08

    CPC分类号： C22B60/026 ,  B01D61/246 ,  B01D63/02 ,  C01G3/003 ,  C22B3/0005 ,  Y02P10/234

    摘要： A system utilizing membrane extraction is provided to recover metal values. The system may be used to separate metal ions from an aqueous solution through the membrane by an organic liquid containing a chelating agent. This invention also contemplates the recovery of metal values from an organic phase, containing the metal complexed with a chelating agent, by an aqueous phase using membrane extraction. In the former case, the metal ion is passed through the membrane from the aqueous phase to the organic phase where it forms a complex with a chelating agent present in the organic phase. In the latter case the metal is extracted from the organic phase into the aqueous phase through the membrane. In both cases a chelating exchange reaction is involved at the interface between the membrane and one of the two phases. This hydro-metallurgical process employs membranes with metal ion diffusivity in the range of about 10.sup..sup.-5 to about 10.sup..sup.-8 cm.sup.2 /sec. and has advantages over conventional metal extractions and may be applied as the mechanism is pollutant removal and recovery as well as for metallurgical separations.

    摘要翻译： 提供利用膜提取的系统来回收金属值。 该系统可用于通过含有螯合剂的有机液体将金属离子与水溶液分离通过膜分离。 本发明还考虑通过使用膜萃取的水相从含有与螯合剂络合的金属的有机相中回收金属值。 在前一种情况下，金属离子通过膜从水相到有机相，其中与有机相中存在的螯合剂形成络合物。 在后一种情况下，金属通过膜从有机相中提取到水相中。 在这两种情况下，螯合交换反应涉及膜与两相之一的界面。 该水力冶金方法使用金属离子扩散率在约10 -5至约10 -8 cm 2 / sec范围内的膜。 并且具有优于常规金属萃取的优点，并且可以应用于机理是污染物去除和回收以及用于冶金分离。

    Novel high diffusivity membranes
    9.
    发明授权
    Novel high diffusivity membranes 失效
    新型高扩散膜

    公开(公告)号：US3951789A

    公开(公告)日：1976-04-20

    申请号：US405389

    申请日：1973-10-11

    申请人： Lester T. C. Lee ,  Win-Sow Ho ,  Kang-Jen Liu

    发明人： Lester T. C. Lee ,  Win-Sow Ho ,  Kang-Jen Liu

    IPC分类号： C08G69/00 ,  B01D53/22 ,  B01D61/00 ,  B01D71/56 ,  C08G69/26 ,  C08J5/22 ,  B01D31/00 ,  B01D13/00

    CPC分类号： B01D71/56 ,  C08G69/26

    摘要： Novel membrane compositions are prepared from polymers comprising tertiary amine containing polyamideamine functional groups. The membranes are durable, highly selective and have excellent homogeneity and high diffusivity. Asymmetric membranes can be prepared by solution casting or melt processing techniques can be used to produce homogeneous, high performance, symmetric membranes. The specific compositions of the membranes can be adjusted so as to achieve a membrane possessing a required degree of hydrophilicity and porosity. These membranes may be used in a variety of separation applications, particularly in two-phase solvent extraction.

    摘要翻译： 由含有叔胺的聚酰胺胺官能团的聚合物制备新的膜组合物。 膜是耐久的，高度选择性的并且具有优异的均匀性和高扩散性。 不对称膜可以通过溶液浇铸或熔融加工技术制备，可用于生产均匀，高性能的对称膜。 可以调节膜的具体组成以获得具有所需程度的亲水性和孔隙率的膜。 这些膜可用于各种分离应用，特别是在两相溶剂萃取中。

    Production of ozonides from unsaturated polymers
    10.
    发明授权
    Production of ozonides from unsaturated polymers 失效
    从不饱和聚合物生产臭氧化物

    公开(公告)号：US4336356A

    公开(公告)日：1982-06-22

    申请号：US180753

    申请日：1980-08-25

    申请人： Shaul M. Aharoni ,  Dusan C. Prevorsek ,  George J. Schmitt ,  Gary A. Harpell ,  Lester T. C. Lee

    发明人： Shaul M. Aharoni ,  Dusan C. Prevorsek ,  George J. Schmitt ,  Gary A. Harpell ,  Lester T. C. Lee

    IPC分类号： C08C19/04 ,  C08F8/06

    CPC分类号： C08C19/04 ,  C08F8/06 ,  C08F8/44 ,  C08G69/26 ,  C08F2810/20

    摘要： Partially unsaturated polymers are dissolved in a two component solvent comprising a first component having a reactivity toward ozone less than carbon-carbon double bonds but more reactive than carbon-carbon single bonds and a second component being inert toward ozone. Introduction of ozone into the solution produces ozonides which are readily cleft into difunctional aliphatic species that can be converted to e.g. carboxy-terminated or multifunctional carboxy substituted aliphatic compounds. These may be used as monomeric species in various polymerization schemes as such, in preparation of polyamides, for example, or may be reduced to aldehydes or alcohols to be used in the preparation of such polymers as polyesters, polyurethanes, poly (Schiff bases), etc. The carboxylated products may also be employed as ionomers, which are useful as surfactants. Monocarboxyl terminated polyethylene having a number average molecular weight of from about 4,000 to 100,000 are provided. Poly(carboxymethyl) substituted polyethylenes, wherein from about 0.05 to 1.3 percent of the hydrogen atom or polyethylene are substituted with carboxymethyl groups, are obtained.

    摘要翻译： 部分不饱和聚合物溶解在包含对臭氧反应性低于碳 - 碳双键但比碳 - 碳单键反应性更高的第一组分的第二组分和对臭氧呈惰性的第二组分的双组分溶剂中。 将臭氧引入溶液中产生臭氧化物，其易于裂解成可以转化为例如二官能的脂族物质。 羧基封端或多官能的羧基取代的脂族化合物。 这些可以在各种聚合方案中用作单体物质，例如在制备聚酰胺时，或者可以还原成醛或醇，以用于制备聚合物如聚酯，聚氨酯，聚（席夫碱）， 羧化产物也可以用作离聚物，它们可用作表面活性剂。 提供数均分子量为约4,000至100,000的单羧基封端的聚乙烯。 得到其中约0.05-1.3％的氢原子或聚乙烯被羧甲基取代的聚（羧甲基）取代的聚乙烯。