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Citation: TANG Li-Ming. Synthesis of Aromatic Hyperbranched Polyesters and Modification of Their End-groups[J]. Chinese Journal of Applied Chemistry, ;2001, 18(4): 340-341. shu

Synthesis of Aromatic Hyperbranched Polyesters and Modification of Their End-groups

TANG Li-Ming

1.
Department of Chemical Engineering and School of Material Science and Engineering, Tsinghua University, Beijing 100084

Received Date: 18 July 2000
Available Online: 18 December 2000

Soluble aromatic hyperbranched polyesters with controlled viscosities have been prepared by melt polycondensation of sililated 5-acetoxyisophathalic acid with sililated p-tert-butyl benzoic acid in various molar ratios. By further reaction with thionyl chloride and propargyl alcohol successively, the endgroups of the crude polyester were transferred into ethynylic groups in 78.2% yield as calculated by ¹H NMR spectra.
- aromatic polymer,
- hyperbranched polyester,
- synthesis,
- endgroup modification
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