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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.