CARDO POLY(ETHER IMIDE)S AND MEMBRANES THEREOF FOR EFFICIENT GAS SEPARATION

摘要

Cardo polyether imides (PEIs) comprising cyclized polyamic acid, a polymer of bis anhydride and fluorinated bis (ether amine) monomers having at least one trifluoromethyl substituted diamine with 9,9-bisalkyl substituted fluorene moiety (A) as monomer, is provided suitable for PEI based membranes. A process of synthesis of said cardo poly(ether imide)s and membranes thereof , which membranes have efficient gas transport and gas separation properties.