Functionalized polyimide molded body and functionalized polyimide membrane

A method for the manufacture of a polyimide body including a polyimide membrane co-valently directly functionalized by a chemical group, comprising the steps of:

• contacting the polyimide body for a period of 1 second to 1 hour with an aqueous modifier solution including, at least partially dissolved therein, a modifier substance which comprises one of a primary and a secondary amino group and at least one further functional group per molecule, subjecting said polyimide body to a temperature of 50 to 100° C. for 1 second to 1 hour after having been contacted by the modifier solution and then cleaning and drying the polyimide body, said modifier substances having the general formulas
• R1—NH—(Y1)n
• R1—NH—X—(Y2)m
• wherein R1 is a hydrogen atom or an aliphatic or aromatic hydrocarbon rest with up to 6 C atoms, Y1 is a hydrocarbon rest with at least 6 C atoms, Y2 is one of a —NH2—, —NHR1—, NH(R2)2—, —OH —, —CH2OH—, —CO(OH)—, —SO2(OHH)—, —PO3(OH)— group and a fluorized group, wherein R2 is one of an aliphatic and aromatic hydrocarbon rest and particularly represents R1, X is one of a straight chain or branched hydrocarbon rest which interconnects the R1—NH— group and the Y2 group or groups which may be bound to the ends or sides of a chain and which may be interrupted in a side chain or the main chain by at least one O or N heteroatom, n represents 1 or 2, and m represents 1, 2, or 3.