Reversible oxygen sorbent compositions
    2.
    发明授权
    Reversible oxygen sorbent compositions 失效
    可逆氧吸附剂组合物

    公开(公告)号:US5208335A

    公开(公告)日:1993-05-04

    申请号:US890065

    申请日:1992-05-27

    摘要: High Capacity solid state cyanocobaltate complexes represented by the chemical formula:[(A).sub.a (R.sub.4 N).sub.b ].sup.z+.sub.x/z [Co(CN).sub.n ].sup.x- .multidot.pSwhere:A is alkali metal atom, alkaline earth metal atom, Zn, Cd or Hg atom;a is any number from 0 to 2.5each R is independently C.sub.1 -C.sub.1O substituted or unsubstituted alkyl, aryl or aralkyl; or a long chain hydrocarbon polymerb is any number from greater than zero to 3z is 1, 2 or 3;n is any number from 3 to 5;x is n-2;p is any number from greater than zero to 6; andS is a ligand which is capable of coordinating with [(A).sub.a (R.sub.4 N).sub.b 9 .sup.z+, Co or both.are capable of chemically binding oxygen to form novel oxygen adducts, thereby selectively removing oxygen from an oxygen-containing fluid stream. The bound oxygen may be recovered from the complexes by increasing the temperature or by reducing the partial pressure of O.sub.2 above the adduct.

    摘要翻译: 由[化学式为[(A)a(R4N)b] z + x / z [Co(CN)n] x-xpS表示的高容量固态氰钴酸盐络合物,其中:A为碱金属原子,碱土金属原子, Zn,Cd或Hg原子; a为0至2.5的任何数,每个R独立地为C 1 -C 10取代或未取代的烷基,芳基或芳烷基; 或长链烃聚合物b是大于0至3的任何数为1,2或3; n是从3到5的任何数字; x是n-2; p是从大于零到6的任何数字; 并且S是能够与[(A)a(R 4 N)b 9 z +,Co或两者配位的配体。 能够化学结合氧以形成新的氧加合物,从而从含氧流体物流中选择性地除去氧。 可以通过增加温度或通过降低加合物上方的O 2分压来从络合物中回收结合的氧。

    Gas separating membranes from polyimide polymers
    3.
    发明授权
    Gas separating membranes from polyimide polymers 失效
    气体分离膜与聚酰亚胺聚合物

    公开(公告)号:US5042993A

    公开(公告)日:1991-08-27

    申请号:US557271

    申请日:1990-07-24

    IPC分类号: B01D67/00 B01D71/64 C08J7/12

    摘要: The present invention is a class of semi-permeable polyimide membranes and a process for using such membranes to separate one or more components of a gaseous mixture. The membranes are prepared from a polyimide having surface-modifiable functionalities comprising repeating units formed from an aromatic dianhydride and an alkyl-substituted phenylenediamine having at least one hydrogen atom located on a ring position ortho to an amine nitrogen. The membranes formed therefrom are contacted in the presence of an oxygen source with an activating force such as high energy electromagnetic irradiation to effect modification of the polymer surface. The surface-modified polyimide membranes exhibit high gas perm-selectivities and are especially useful in effecting the separation of oxygen and nitrogen from air.

    摘要翻译: 本发明是一类半渗透性聚酰亚胺膜和使用这种膜分离气态混合物的一种或多种组分的方法。 膜由具有表面改性官能团的聚酰亚胺制备,所述官能团包含由芳族二酐形成的重复单元和具有至少一个位于胺氮邻位置上的氢原子的烷基取代苯二胺。 由此形成的膜在氧源的存在下与诸如高能电磁照射的活化力接触,以实现聚合物表面的改性。 表面改性的聚酰亚胺膜表现出高的气体选择性,并且特别可用于实现氧和氮与空气的分离。

    Gas separating membranes from polyimide polymers and a process for using
the same
    5.
    发明授权
    Gas separating membranes from polyimide polymers and a process for using the same 失效
    气体分离膜与聚酰亚胺聚合物及其使用方法

    公开(公告)号:US5045093A

    公开(公告)日:1991-09-03

    申请号:US598490

    申请日:1990-10-16

    IPC分类号: B01D67/00 B01D71/64 C08G73/10

    摘要: The present invention is a class of semi-permeable polyimide membranes and a process for using such membranes to separate one or more components of a gaseous mixture. The membranes are prepared from a polyimide having surface-modifiable functionalities comprising repeating units formed from an aromatic dianhydride and a bridged alkylated bisaniline wherein the bridging group of the diamine possesses restricted, rotatable rigid or low Van Der Waal energy substituents which are orthogonal to the polymer backbone. The membranes formed therefrom are contacted in the presence of an oxygen source with an activating force such as high energy electromagnetic irradiation to effect modification of the polymer surface. The surface-modified polyimide membranes exhibit high gas perm-selectivities and are especially useful in effecting the separation of oxygen and nitrogen from air.

    摘要翻译: 本发明是一类半渗透性聚酰亚胺膜和使用这种膜分离气态混合物的一种或多种组分的方法。 膜由具有表面修饰官能团的聚酰亚胺制备,该聚酰亚胺包含由芳族二酐和桥连烷基化双苯胺形成的重复单元,其中二胺的桥连基团具有与聚合物正交的限制的,可旋转的刚性或低范德瓦能量取代基 骨干。 由此形成的膜在氧源的存在下与诸如高能电磁照射的活化力接触,以实现聚合物表面的改性。 表面改性的聚酰亚胺膜表现出高的气体选择性,并且特别可用于实现氧和氮与空气的分离。