申请人:National Institute of Advanced Industrial Science and Technology
公开号:EP1213049A1
公开(公告)日:2002-06-12
This invention relates to resin material for gas separation base containing a cardo polyimide structure in which the hydrogen atoms in the side-chain benzyl and/or allyl position are halogenated at a rate of modification by halogen of 0.1% or more or resin material for gas separation base containing polymer in which the hydrogen atoms in the side-chain benzyl and/or allyl position are halogenated at a rate of modification by halogen of 34% or more and, additionally, relates to polymer which serves as raw material for the aforementioned resin material for gas separation base containing a cardo polymer structure and a process for producing said polymer; said polymer not only excels in such properties as solvent solubility, ease of conversion to film by a wet process, thermal stability, and chemical stability but also performs well in gas permeability and the process of this invention makes it possible to produce gas separation base, particularly gas separation membrane, whose gas permeability and gas selectivity can be readily controlled.
本发明涉及用于气体分离基础的树脂材料,该材料含有一种卡多聚酰亚胺结构,其中侧链苄基和/或烯丙基位置上的氢原子被卤化,卤化率为 0.1%或更高,或含有侧链苄基和/或烯丙基位置的氢原子被卤化的比率为 34% 或更高的聚合物的气体分离基树脂材料,此外,还涉及作为上述含有卡道聚合物结构的气体分离基树脂材料原料的聚合物以及生产上述聚合物的工艺;所述聚合物不仅在溶剂溶解性、通过湿法工艺转化为薄膜的难易程度、热稳定性和化学稳定性等性能方面表现出色,而且在气体渗透性方面也有很好的表现,本发明的工艺可以生产出气体渗透性和气体选择性易于控制的气体分离基料,特别是气体分离膜。