Dipol-modified polyurethane, method for obtaining it and use in the production of electro-active polyurethane-based cast elastomer films

摘要

the present invention relates to a method of producing a dielectric polyurethane polymers fully the steps:(a) production of a dipole - funktionalisierten polyisocyanats through implementation of a polyisocyanats with nco functionality of 2.0 with a common connection of the general formula (i).(z) - (r) n - (d) - x (a) mu2003u2003u2003u2003u2003 (formula i)in thez is a functional group with at least one zerewitinoff active hydrogen atomx is an organic rest with a delokalisierten elektronensystem,a elektronenakzeptorfunktionalitu00e4t, selected from the group consisting of - no2, - cn, - f, - cl, - cf3, ocf3, cyanovinyl, dicyanovinyl, or tricyanovinyl residues.d elektronendonorfunktionalitu00e4t, selected from the group consisting of - o -, - s -, or - n (b), where b is hydrogen or a linear or branched alkylrest with 1 to 16 carbon atoms.r is a 1 to 16 carbon atoms alkylenrest represents, withn = 0 or 1, and m = 1, 2, 3 or 4;(b) subsequent implementation of step (a) the dipole - funktionalisierten polyisocyanats with(aa) a polyisocyanatkomponente and(bb) of a polyolkomponente.;the invention concerns also a procedure according to the dielektrisches produced polyurethane polymer and its use.