Polybutylene Terephthalate Resin For Industrial Applications

With more than 100 grades, Crastin® PBT is the resin of choice for cost-effective high-performance across a wide range of industrial applications.

Designers, engineers, and manufacturers rely on Crastin® PBT for stiffness and toughness, superior electrical insulation properties, and exceptional surface finishes. Crastin® is also preferred for its excellent dimensional properties and stability versus moisture as well as its heat resistance.

Crastin® is extremely versatile. It’s available in FDA and EU approved grades for food and cosmetics applications, and it meets the most-stringent electrical insulation standards. It enables DuPont to offer the industry’s largest portfolio of EIS pre-approved by Underwriters Laboratories (UL) grades and recognized to IEC standards. 

DuPont™ Crastin® PBT offers manufacturers the advantage of superior flow qualities. It’s easy to process on conventional injection molding machines. It is available in a wide range of grades designed for low-warpage, hydrolysis resistance, and for blow-molding and extrusion. 

With Crastin®, DuPont materials science experts help customers gain cost efficiency without compromising on performance.



  • Cosmetics packaging materials
  • Electrical and electronic plastics
  • Electrical encapsulation materials
  • Electrical insulation polymers
  • Food contact materials
  • Innovative furniture design
  • Mechanical gears
  • Medical device materials
  • Photovoltaic panels and parts
  • Plastics For sporting goods
  • Polymers For appliances


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Design Freedom

Crastin® PBT offers high flow resins which allow for more complex, thin-walled parts. It also has excellent aesthetics, from colorability to surface finish (gloss).

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PBT inherently has a fast crystallization process, which allows for faster cycle times. Crastin® PBT offers SF grades with higher flows for even faster cycle times.

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Hydrolysis Resistance Performance

Crastin® PBT hydrolysis resistant grades have industry-leading performance combined with processing stability for use with hot runners and regrind.


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