| 摘要 |
The present invention provides novel block copolycarbonates comprising residues from a hydroxy terminated polyetherimide or polyimide, residues from a dihydroxy compound, and residues from an activated carbonate. In a preferred embodiment of the present invention the polyetherimide or polyimide blocks exhibit high M<SUB>w </SUB>while the resulting block copolycarbonate exhibits a single T<SUB>g</SUB>. The novel block copolycarbonates of the present invention are produced under melt polymerization conditions in the presence an activated carbonate source.
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