Patent ID: 7273551

Claim:
A polyimide body co-valently functionalized directly by a chemical group with which the polyimide body has been contacted for a period of 1 second to 1 hour using 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 additionally at least one further functional group per molecule, said polyimide body being subjected to an increased temperature after having been contacted by the modifier solution and being subsequently cleaned and dried, said modifier substances having the general formulas R 1 —NH—(Y 1 ) n R 1 —NH—X—(Y 2 ) m wherein R 1 is a hydrogen atom or an aliphatic or aromatic hydrocarbon rest with up to 6 C atoms, Y 1 is a hydrocarbon rest with at least 6 C atoms, Y 2 is one of a —NH 2 —, —NHR 1 —, NH(R 2 ) 2 —, —OH—, —CH 2 OH—, —CO(OH)—, —SO 2 (OHH)—, —PO 3 (OH)— group and a fluorized group, wherein R 2 is one of an aliphatic and aromatic hydrocarbon rest and particularly represents R 1 , X is one of a straight chain or branched hydrocarbon rest which interconnects the R 1 —NH— group and the Y 2 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.