POLYESTER OLIGOMER AND METHOD FOR PREPARING THE SAME, AND POLYESTER-POLYCARBONATE BLOCK COPOLYMER COMPRISING THE OLIGOMER WITH IMPROVED SCRATCH RESISTANCE AND METHOD FOR PREPARING THE SAME

摘要

The present invention relates to a polyester oligomer and a method for producing the same, and to a polyester-polycarbonate block copolymer with improved scratch resistance including the oligomer and a method for producing the same, and more particularly, to a polymerization unit having a fluorene structure and a polyester oligomer comprising a polymer unit having a diaryl ketone structure, a method for preparing the same, and a block formed from the polyester oligomer and a polycarbonate block as repeating units, compared to conventional linear polycarbonate and polycarbonate copolymers The present invention relates to a polyester-polycarbonate copolymer having excellent impact strength while having improved scratch resistance and a method for manufacturing the same.