Polypropylene (PP) yog ib qho tawv, tawv, thiab crystalline thermoplastic.Nws yog tsim los ntawm propene (los yog propylene) monomer.Qhov no linear hydrocarbon resin yog lub lightest polymer ntawm tag nrho cov khoom yas.PP tuaj yeem ua homopolymer lossis ua copolymer thiab tuaj yeem txhawb nqa zoo nrog cov khoom ntxiv.Nws pom daim ntawv thov nyob rau hauv ntim, tsheb, neeg siv khoom zoo, kev kho mob, cam khwb cia zaj duab xis, thiab lwm yam. PP tau dhau los ua cov khoom xaiv, tshwj xeeb tshaj yog thaum koj tab tom nrhiav ib lub polymer nrog lub zog zoo (xws li, vs Polyamide) hauv kev siv engineering lossis tsuas yog nrhiav. tus nqi kom zoo dua hauv tshuab moulding fwj (vs. PET).