Synthesis and physico chemical study of a new hexa and tetra functional epoxy materials based on bis -para-terephthalylidene phosphoric ester.

The new phosphorus epoxy resins tetraglycidyl of bis-para- terephthalylidene phosphoric ester (TGTEP) and hexaglycidyl of bis -para-terephthal phosphoric ester (HGTEP) were synthesized by condensation of glycedol and new polycholoro organophosphate precursors. The synthesized resins have been characterized by Fourier transform infrared (FTIR), 1H, 13C and 31P NMR analyses. Kinetic of cross linking reactions were carried by the determination of epoxy values, curing behavior and thermal stability was followed by thermogravimetric analysis (TGA). The viscometric study allowed us to determine the thermal of storage conditions of these resins. The results allow verifying the chemical structures of new synthesized products. Thermal analysis reflects the good thermal behavior of new resins. The evolution of viscosity as a function of temperature confirm that the synthesized resins can be stored at temperatures above 45 °C without fear of damaged.