Optically active copolyesters based on axially dissymmetric 1,1 '-binaphthalene-2,2 '-diyl units

Optically active copolyesters based on axially dissymmetric 1,1'-binaphthal ene-2,2'-diyl units have been prepared and characterized by specific rotati on, C-13-NMR and CD spectra. The results show that the rotation signs of tr ibasic copolyesters or the mixture of corresponding homopolyesters obey a t hree dimensional quadrant pattern. The composition of the copolyesters was determined from C-13-NMR spectra to be triad sequence distributions and cor responding with the ratio by feed.