poly(propylene terephthalate)

polymer

Poly(propylene terephthalate), or PPT, is a semi-crystalline polyester formed by the condensation of propylene glycol and terephthalic acid, placing it in the family of saturated polyesters alongside PET and PBT. It combines moderate stiffness and chemical resistance with improved flexibility compared to PET, making it suitable for applications requiring a balance between rigidity and impact tolerance. PPT is used in automotive components, electrical connectors, and consumer goods where dimensional stability and resistance to moisture and oils are important; it offers an intermediate performance level between commodity polyesters and higher-performance engineering plastics, appealing to cost-conscious designs that cannot tolerate the brittleness of standard PET.

automotive connectors and fastenerselectrical/electronic housingschemical-resistant tubingconsumer appliance partsinjection-molded mechanical componentsmoisture-resistant film applications

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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°F——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.