Abstract
Metal salts of mono(hydroxyethoxyethyl)phthalate [M(HEEP)2](M=ca2+ and Zn2+) were synthesized by the reaction of diethylene glycol, phthalic anhydride and metal acetates. Metal‐containing co‐polyurethanes (MCPUs) having ionic linkages in the main chain were synthesized by the polyaddition reaction of hexamethylene diisocyanate or tolylene 2,4‐diisocyanate with 1∶1 mixtures of [M(HEEP)2] and 1,5‐pentane diol (PD) by using di‐n‐butyltin dilaurate as a catalyst. The MCPUs were characterized by FT‐IR, 1H‐NMR, 13C‐NMR elemental analysis, solubility, viscosity and X‐ray diffraction. Thermal properties of the polymers were also studied using thermogravimetric analysis and differential scanning calorimetry. The MCPUs were soluble only in highly polar solvents. The thermogravimetric analysis of MCPUs showed that the metal ions influence the initial decomposition temperature and overall thermal stability.
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