HOCHMOLEKULARER AROMATISCHER POLYESTER, VERFAHREN ZUR HERSTELLUNG VON FOLIEN AUS DIESEN POLYESTERN UND FOLIE AUS DIESEN POLYESTERN, EIN ELEKTRISCHER LEITER MIT EINER ISOLIERUNG AUS DIESEN POLYESTERN UND VERFAHREN ZUR HERSTELLUNG SOLCHER ISOLIERUNGEN

1. High-molecular polyester, consisting substantially of chain members of the Formula -(-O-X-O-Y-)- , which in these chain members as member X substantially has the structures see diagramm : EP0064972,P9,F1 or see diagramm : EP0064972,P9,F2 and as member Y substantially has the structure see diagramm : EP0064972,P9,F3 characterized in that the polyester has an inherent viscosity of greater than 1.0 dl/g, preferably greater than 1.2 dl/g, measured at 30 degrees C in a solution of 0.5 g polyester in 100 ml solvent, consisting of 60% -wt. phenol and 40% -wt. 1,1,2,2,-tetrachloroethane, and that with an inherent viscosity in the range of 1.0 to 1.5 dl/g between 30 and 70% of the chain members have as member X the structure X1 and between 70 and 30% of the chain members have as member X the structure X2 , with the exception of a polyester with an inherent viscosity of 1.67 dl/g, which is produced from 9,9-bis(4-hydroxyphenyl)-fluorene and an equimolar mixture of isophthalic acid dichloride and terephthalic acid dichloride.