Abstract
Abstract Syntheses of metal-containing unsaturated polyesters based on divalent metal salts (I) of mono (hydroxyethyl)phthalate were investigated by the polycondensation reactions of I-glycols with maleic anhydride (MA)-phthalic anhydride (PA). Among various combinations of components, the systems of MA-PA-diethylene glycol (DEG)-Mg salt, and MA-PA-ethylene glycol (EG)-propylene glycol (PG)-Mg salt gave polyesters soluble in styrene. Viscosities of styrene solutions of the polyesters obtained showed a tendency to increase with increase in metal content in the polyester. The styrene solutions could be cured. The cured polyester resins were evaluated for physical properties. Generally, the polyesters of MA-PA-EG-PG-Mg salt have good physical properties. Further, resistance to chemical attack and boiling water, and thermal behavior are also discussed.
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