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Tarnodur A (PBT) - polybutylene terephthalate

Polybutylene terephthalate is generated as a result of the polycondensation of terephthalic acid and butyl alcohol (1,4-butanediol).
A crystalline polymer. Density: 1.31 g/cm3. Mechanical characteristics lower than those of PET. Good rheological properties. PBT is resistant to stress corrosion and thermal ageing. Resistant to water, weak acids, oils and fats. Not resistant to concentrated acids, alkalis, phenols. Regular contact with hot water causes hydrolysis.

Tarnodur A (PBT) – politereftalan butylenu

Tarnodur A (PBT) – advantages

  • Tarnodur A(PBT)Good resistance to weather conditions
  • Tarnodur A(PBT)Good chemical resistance at room temperature
  • Tarnodur A(PBT)Good dimensional stability (low moisture absorption)
  • Tarnodur A(PBT)Excellent insulating properties
  • Tarnodur A(PBT)Ease of processing
  • Tarnodur A(PBT)May be used in contact with food
  • Tarnodur A(PBT)Recyclable
  • Tarnodur A(PBT)Low coefficient of friction
  • Tarnodur A(PBT)Microwave radiation permeability

Tarnodur A (PBT) – limitations

  • Tarnodur A(PBT)No resistance to hot water
  • Tarnodur A(PBT)No resistance to concentrated alkalis
  • Tarnodur A(PBT)No resistance (at increased temperatures) to ketones, aromatic and chlorinated hydrocarbons
  • Tarnodur A(PBT)No resistance (at increased temperatures) to diluted acids and bases
  • Tarnodur A(PBT)Lower mechanical strength and stiffness, in comparison to PET
  • Tarnodur A(PBT)Lower heat deflection temperature, in comparison to PET
  • Tarnodur A(PBT)Poor resistance to flames