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Celanex® PBT - High Strength and Chemical Resistance with Low Creep at High Temperatures

Celanex® thermoplastic polyester (PBT), produced by Celanese, is a semicrystalline structure based on polybutylene terephthalate. It provides high strength, rigidity, and toughness, low creep even at high temperatures, and resistance to a wide range of chemicals, solvents, oils, and greases.

Celanex PBT is especially suited as a sliding partner for Hostaform®/Celcon® POM. It features excellent dimensional stability, low moisture absorption, and powerful insulation resistance.

Product Properties:

• Very hard, rigid, and strong
• Good creep resistance
• High heat-distortion temperature, especially for glass fiber-reinforced grades
• Service temperature up to 140°C
• Very good low-friction and wear-resistant properties
• High dimensional stability (low thermal expansion coefficient, low water absorption)
• Good electrical properties
• Good chemical resistance
• No environmental stress cracking
• Good weathering resistance
• Rapid crystallization and fast cycle time
• Paintable
• Flame-retardant grades available (UL 94 V-0, in some cases 5VA)
   

Depending on market requirements, the Celanex PBT flame-retardant system is low in migration and halogen-free.

Grades:

• Basic
• Glass fiber and glass sphere reinforced
• Glass fiber reinforced with very high surface gloss
• Glass fiber/mineral reinforced
• Flame retardant
• UV stabilized
• HR grades
• Medical technology (MT®)
• Special colours for laser marking
• MetaLX™ metal effects
   

Processing:

• Injection molding
• Extrusion
• Meltblown
• Physical foaming
• Water- and gas-injection technology (WIT/GIT)
   

Various grades of Celanex PBT hold regulatory approvals, including VDE or UL approvals for the electrical and electronic market, and FDA approval for the nutrition and medical markets.