Properties of Some Chlorine Containing Polyesters

Four different types of unsaturated polyesters, made by varying the moral ratios of chlorendic acid to isophthalic acid, were copolymersied with styrene. Thermal stability, self extinguishing property, red heat resistance and chemical resistance of all these types were determined and compared with red heat resistance of 'ATLAC' and thermal stability of highly rigid phthalate and isophthalate polyesters. It was noted that the heat, flame and chemical resistance can be enhanced by more density of cross linking, absence of free homopolymer of the cross linking monomer (styrene), avoidance of phthalate ester group, and incorporation of halogen containing compounds like chlorendic acid