Chem. J. Chinese Universities ›› 2001, Vol. 22 ›› Issue (6): 1073.

• Articles • Previous Articles    

Synthesis and Characterization of Novel Functional Hyperbranched Polyesters

TANG Li-Ming1, HansR. Kricheldorf2   

  1. 1. Dept. of Chem. Eng., School of Material Science and Engineering, Tsinghua University, Beijing 100084, China;
    2. Institute of Technology and Macromolecule Chemistry, Hamburg University, Hamburg, Germany
  • Received:2000-06-09 Online:2001-06-24 Published:2001-06-24

Abstract: Aseries of hyperbranched polyesters with controlled inherent viscosities have been prepared by polycondensation of 3,5-bis(trimethylsiloxy) benzoyl chloride with sililated p-methyl aniline under various molar ratios. After reacted with acid chlorides in o-dichlorobenzene, the functionalization of these polyesters was readily accomplished. The end groups of the crude polymers were effectively transferred into vinylic and ethynylic groups in high yields(>85%) as calculated by 1H NMRspectra without any change in their inherent viscosities.

Key words: Hyperbranched polyester, Synthesis, Functionalization, End groups

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