PBT (polymer of 1,4-phthalic acid and 1,4-butanediol)

　　CAS number: 26062-94-2

　　Melting point: 226 °C

　　Uses: used in the manufacture of various parts and components for the production of televisions, electrical appliances, instruments, machinery, and filaments, films, etc.; for the manufacture of filaments, films, electronic appliances (like converters, potentiometers, bar-shaped couplings) , Color picture tube sockets and various switches, etc.) and automobiles, the rest are used for mechanical parts and fiber modification