Polymers and methods for producing them, gas separation membranes using this polymers, gas separation modules, gas separation devices, and m-phenylenediamine compounds.

摘要

PROBLEM TO BE SOLVED: To provide a gas separation membrane having excellent gas permeability, excellent gas separation selectivity, and less likely to cause a decrease in gas permeability even when exposed to harsh drying conditions, a gas separation module having this gas separation membrane, and a gas. Provision of separation device. SOLUTION: A polymer having a component represented by the formula (I) and a production method, a diamine compound as a raw material, a gas separation membrane containing this polymer, a gas separation module having this gas separation membrane, and gas separation. apparatus. In formula (I), RA, RB and RC represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a halogen atom. However, at least one of RA, RB and RC is an alkyl group or a halogen atom having 1 to 4 carbon atoms. The above alkyl group having 1 to 4 carbon atoms is not trifluoromethyl. ** indicates the connection site. [Selection diagram] Fig. 1