申请人:Board of Regents, The University of Texas System
公开号:US05262056A1
公开(公告)日:1993-11-16
Polyamide and polypyrrolone membranes for fluid separation having desirable permeabilities, solubilities, diffusivities,, high glass transition temperatures and large fractional free volumes. In particular, the membranes are the polyamide and polypyrrolone forms of hexafluoroisopropylidene-bisphthalic anhydride polymerized with 3,3',4,4' tetraaminodiphenylisopropylidene (6FDA-TADPIP) and polymerized with hexafluorotetraamine (6FDA-6FTA). Fluid separation membranes made from these polymers are described as well as a method of separating fluids using these membranes. Pure gas permeabilities and permeabilities with gas feed mixtures using the fluid separation membranes for feed pressures up to 900 psia indicate desirable permeability and no plasticization effects.
聚酰胺和聚吡咯酮膜用于具有理想渗透性、溶解度、扩散性、高玻璃化转变温度和大分数自由体积的流体分离。特别是,这些膜是六氟异丙基亚苯二甲酸酐与3,3',4,4'四氨基二苯基异丙基亚甲基苯(6FDA-TADPIP)聚合和六氟四氨基(6FDA-6FTA)聚合的聚酰胺和聚吡咯酮形式。描述了使用这些聚合物制成的流体分离膜以及使用这些膜分离流体的方法。使用这些流体分离膜进行最高900 psia的进料压力下的纯气体渗透性和气体混合物的渗透性表明具有理想的渗透性和无塑化效应。