Polybutylene Terephthalate (PBT) is a semi-crystalline engineering-grade thermoplastic with similar properties and composition to polyethylene terephthalate (PET). It is a member of polyester family of polymers.
PBT is produced by polycondensation of terephthalic acid or dimethyl terephthalate with 1,4 –butanediol using special catalysts.
PBT displays excellent mechanical and electrical properties with robust chemical resistance to a wide range of chemicals, solvents, oils and greases. Polybutylene Terephthalate offers excellent dimensional stability, low moisture absorption, and powerful insulation resistance.
Polybutylene Terephthalate Structure
Strengths and Limitations of Polybutylene Terephthalate