发明授权
US4855380A Cyclopentadiene-containing cyclic polycarbonate oligomer 失效
含环戊二烯的环状聚碳酸酯低聚物

Cyclopentadiene-containing cyclic polycarbonate oligomer
摘要:
Novel linear aromatic polycarbonate oligomers that contain one or more dicyclopentadiene dicarboxylate diradicals are described. These oligomers are prepared by the reaction of a cyclic aromatic polycarbonate oligomer with an alkali metal or magensium salt of a cyclopentadiene.
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