Polydially phthalate (PDP) is prepared from the diallyl 1,3-phthalate [C6 H4 (CH2 —CH=CH2 )]. The linear polymer obtained is a solid thermoplastic still containing unreacted allylic groups spaced at regular intervals along the polymer chain. When mixed with various fillers such as mineral, glass, or synthetic fibers it exhibits good electrical properties under high humidity and high temperature conditions, stable low-loss factors, high surface and volume resistivity, and high arc resistance.
POLY(DIALLYL PHTHALATE) is used in electrical appliances, motors, radio, instruments and other industries for manufacturing components with high mechanical performance and temperature requirements, such as AC contactors, coils, and frames.
