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    • 5. 发明申请
    • HIGH SELECTIVITY POLYIMIDE MEMBRANE FOR NATURAL GAS UPGRADING AND HYDROGEN PURIFICATION
    • 用于天然气升级和氢气净化的高选择性聚酰亚胺膜
    • WO2016053765A2
    • 2016-04-07
    • PCT/US2015/052091
    • 2015-09-25
    • UOP LLC
    • LIU, ChunqingTRAN, Howie Q.
    • B01D53/228B01D67/0006B01D71/64B01D2256/16B01D2325/14Y02C10/10Y02C20/20
    • A polyimide polymer having hydroxyl and acetoxy function groups is provided together with a membrane made from the polymer. Also provided is a process for separating at least one gas from a mixture of gases using a polyimide membrane comprising a polyimide polymer with hydroxyl and acetoxy functional the process comprising: (a) providing the polyimide membrane comprising the polyimide polymer with hydroxyl and acetoxy functional groups which is permeable to the at least one gas; (b) contacting the mixture on one side of the polyimide membrane to cause said at least one gas to permeate the membrane; and (c) removing from the opposite side of the membrane a permeate gas composition comprising a portion of said at least one gas which permeated the polyimide membrane.
    • 具有羟基和乙酰氧基官能团的聚酰亚胺聚合物与由聚合物制成的膜一起提供。 还提供了使用包含具有羟基和乙酰氧基官能团的聚酰亚胺聚合物的聚酰亚胺膜从气体混合物中分离至少一种气体的方法,该方法包括:(a)提供包含聚酰亚胺聚合物的聚酰亚胺膜,其具有羟基和乙酰氧基官能团 其对所述至少一种气体是可渗透的; (b)使所述混合物在所述聚酰亚胺膜的一侧上接触以使所述至少一种气体渗透所述膜; 和(c)从所述膜的相对侧去除渗透气体组合物,所述渗透气体组合物包含透过所述聚酰亚胺膜的所述至少一种气体的一部分。