Welcome to Chemistry and Industry of Forest Products,

›› 2008, Vol. 28 ›› Issue (5): 1-6.

• 研究报告 •     Next Articles

Synthesis and Properties of Polyol from Hydrogenated Terpinene-maleic Ester Type Epoxy Resin Modified by Gallic Acid

WU Guo-min, KONG Zhen-wu, CHEN Jian, HUANG Huan   

  1. Institute of Chemical Industry of Forest Products, CAF;Key and Open Lab. on Forest Chemical Engineering, SFA, Nanjing 210042, China
  • Received:2008-03-26 Revised:1900-01-01 Online:2008-10-30 Published:2008-10-30

Abstract: A new kind of polyol (HTME-GA polyol) was synthesized from hydrogenated terpinene-maleic ester type epoxy resin (HTME) modified by gallic acid (GA), and the suitable synthesis conditions were confirmed by studying the factors of synthesis reaction. HTME-GA polyol could be obtained by reacting GA with HTME at reflux temperature for about 3 hours in the solvent of n-propyl alcohol with the amount about 12.5 times of GA by molar weight and catalyst of quaternary ammonium salt with the amount about 2% of the reactants by weight. The chemical structure of HTME-GA polyol was characterized by chemical analysis, FT-IR and 13C NMR spectral methods. HTME-GA polyol was crosslinked with two different curing agents, namely HN90T (HDI trimer) and EC385 (HDI trimer modified with polyether). It was shown that the crosslinked product of HTME-GA polyol with EC385 had better mechanical properties, and the crosslinked product of HTME-GA polyol with HN90T had better properties of resistance against liquids and higher hardness, while with poor flexibility. The increase of molar ratio of NCO/OH resulted in higher hardness and better liquid resistance of crosslinked product.

Key words: hydrogenated terpinene-maleic ester type epoxy resin, gallic acid, polyol

CLC Number: