RESIN MATERIAL FOR GAS SEPARATION BASE AND PROCESS FOR PRODUCING THE SAME

摘要

A resin material for gas separation bases which has a cardo-type polymer structure in which at least 0.1% of the hydrogen atoms of the pendant benzyl and/or allyl groups have been replaced by a halogen or a resin material for gas separation bases which comprises a polymer in which at least 34% of the hydrogen atoms of the pendant benzyl and/or allyl groups have been replaced by a halogen; the polymer constituting the resin material for gas separation bases which has the cardo-type polymer structure; and a process for producin g the polymer. The resin material not only is excellent in solvent solubility, easiness of film formation by a wet process, thermal stability, chemical stability, etc., but has better performances with respect to gas permeabilit y and gas selectivity. Thus, a gas separation base, especially a gas separatio n membrane, can be produced in which gas permeability and gas selectivity can be easily controlled.