Polybutylene Terephthalate

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  • Polybutylene terephthalate (PBT) is a thermoplastic engineering polymer, that is used as an insulator in the electrical and electronics industries. It is a thermoplastic (semi-)crystalline polymer, and a type of polyester. PBT is resistant to solvents, shrinks very little during forming, is mechanically strong, heat-resistant up to 150 C (or 200 C with glass-fibre reinforcement) and can be treated with flame retardants to make it noncombustible.
  • PBT is closely related to other thermoplastic polyesters.Compared to PET (polyethylene terephthalate), PBT has slightly lower strength and rigidity, slightly better impact resistance, and a slightly lower glass transition temperature. PBT and PET are sensitive to hot water above 60 C (140 F). PBT and PET need UV protection if used outdoors, and most grades of these polyesters are flammable, although additives can be used to improve both UV and flammability properties.
  • Polybutylene terephthalate is used for housings in electrical engineering, but also in automotive construction as plug connectors and in households for example in showerheads or irons. It is also found processed into fibers in toothbrushes.
  • PBT can compete with many amorphous engineering materials such as polysulfone and polycarbonate. GIA announces the release of a comprehensive global report on the Polybutylene Terephthalate (PBT) markets. The global market for Polybutylene Terephthalate (PBT) is projected to reach 1.3 million tons by the year 2017.
  • Increasing requirements for luxury as well as electronics in automotive engineering , development of innovative
    chemistries in the PBT market, and increasing demand from the emerging markets continue to remain the prime growth drivers propelling the global market demand.
  • Asia-Pacific represents the largest and fastest growing market for Polybutylene Terephthalate, as stated by the new market research report on Polybutylene Terephthalate.
  • The already expanding automobile demand in these countries, brings forth the potential opportunities in these markets. The demand for PBT in China is driven by the swelling automobile production base and extensive usage of PBT in switches, connectors, circuit breakers by the electronic and electrical industry. Currently about 50% of the PBT demand in China is met through imports.
  • There are over 50 companies engaged in the manufacture of PBT plastics, the major suppliers being SABIC, Ticona, Dupont, BASF, Lanxess, Celanese, Teijin, and Toray.

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