| 摘要 |
The invention relates to aromatic copolyamides which are soluble in organic polyamide solvents and essentially comprise the recurring structural units of the formulae Ia, Ib and Ic or Ia, Ib and Ie… [-OC-R<1>-CO-NH-R<2>-NH-] (Ia> [-OC-R<1>-CO-NH-R<3>-NH-] (Ib> [-OC-R<1>-CO-NH-R<4>-NH-] (Ic> [-OC-R<1>-CO-NH-R<7>-NH-] (Ie> in which R<1> and R<7> are divalent aromatic radicals whose valence bonds are in the para-position or in a comparable coaxial or parallel position to one another, R<2> is a radical of the formula III …<IMAGE>… and R<3> and R<4> are radicals of the formula IV …<IMAGE>… in which Z is -O-, -S-, -CO-, -SO2-, C1-C10-alkylene or -O-R<1>-O-, and R<6> is hydrogen or an inert substituent. …<??>The molar proportions of the individual structural features in the copolyamides are determined within selected limits. The copolyamides claimed are distinguished by good dynamic ability. |
