Gas separation membrane, gas separation module, gas separation apparatus, gas separation method, composition for gas separation membrane, and method for producing gas separation membrane

摘要

Gas permeability and gas separation selectivity can be achieved at the desired high level, and the above-mentioned excellent separation membrane performance (gas permeability, separation selectivity) can be continuously expressed even in the presence of plasticizing impurities. A gas separation membrane, a gas separation module, a gas separation device, a gas separation method, a gas separation membrane composition using the same, and a method for producing the gas separation membrane are provided. A gas separation membrane having a gas separation layer containing a polyimide compound containing a structural unit represented by the following formula (1). In formula (1), R ^a1 represents a mother nucleus having a specific structure. ^Lan represents ^an (n + 1) -valent linking group, and n is an integer of 2 or more.