TORAYCON™ PBT resin (polybutylene terephthalate)

TORAYCON™ PBT resin (polybutylene terephthalate) is a polyester-based thermoplastic engineering plastic with excellent electrical properties and chemical resistance.

PBT resin is produced from the primary starting materials 1,4-butanediol and terephthalic acid and is a linear thermoplastic saturated polyester resin with ester bonds in the main chain.
Unique features can be easily provided by compounding various additives, glass fibers, flame retardants, and utilizing solubilizing techniques. Multiple grades are available for use. Furthermore, it is easy to add any color.
The product is used in a large number of applications spanning several fields, including electrical and electronic devices, connectors and capacitor casing, automotive electronics, OA equipment, building materials, and industrial machinery parts.


  • High cycle qualities based on high crystallization rate.
  • Outstanding surface gloss.
  • Superior dimensional stability.
  • Superior anti-abrasion and wear resistance characteristics.
  • Outstanding chemical resistance.
  • Good electrical properties.
  • Easy improvement of properties with glass-fiber reinforcement.
  • Superior anti-creep properties and anti-fatigue properties.
  • Can be used continuously at temperatures between 120 and 140°C.
  • Easy to make flame retardant.
  • Low water absorption.

Featured grades

A Range of Materials with Excellent Dimensional Accuracy for Communications Equipment and Sensor Components

Communications devices and sensor components used in technologies such as 5G communication and autonomous driving require dimensional accuracy, which requires resin materials that have a low level of warpage. To that end, Toray has now developed PBT and PPS resins with reduced warpage, which is one of the challenges faced by crystalline engineering plastics.

Further details

Developing High-Impact Materials Toray Nylon (Amilan™) and PBT (TORAYCON™) to Contribute to Vehicle Safety and Weight Reduction

Safety measures for the driver, passengers and pedestrians.
This high-impact grade made using NANOALLOY™ technology helps to improve safety by reducing damage in the event of a collision.

Further details

PBT for Extrusion Molding

We propose extrusion-molding grades controlled by our own polymerization technology, taking advantage of the characteristics of polymers with different melt viscosity, solidification characteristics and flexibility.

Further details

White paper

Overcoming the weaknesses of PBT resin! Toray's improved hydrolysis-resistance technology

The PBT resin used in the applications such as ADAS will deteriorate and become weaker due to hydrolysis and being exposed to high temperature and high humidity environments for long periods. We have invented a proprietary resin reformulation technology that retains the excellent characteristics (moldability, dimensional accuracy, electrical properties) of PBT resin while improving its hydrolysis resistance.


No More Breakage Due to Heat or Cold! The Thermal Resistant Formulation of PBT Resin and Toray CAE-Analyzed Examples

Toray has contributed to solving problem with metal-resin composite parts by developing PBT resin with improved cold and heat resistance, as well as by providing customers with verification results in advance using our proprietary CAE analysis software. We would like to introduce an example of using grades suitable for heating and cooling cycles and CAE analysis.


Toray's TORAYCON™ PBT Resin Designed for Safety and ReliabilityVastly improved alkali-resistance through water-repellent technology and hydrolysis-resistance technology

Since the products involved in the various advanced driver-assistance systems (ADAS) that support this evolution are made to help drivers with things like peripheral monitoring, they are being used in increasingly harsh environments. In this whitepaper, we will look at how we've increased the alkali-resistance—a characteristic weakness of conventional PBT resin—to produce a new, vastly improved, highly durable material.


Simultaneous Pursuit of Heat Dissipation/Electromagnetic Wave Shielding/Airtightness and Weight ReductionProposal of Metal-Resin Joining Technology that will Contribute to the Production of New Products

While integrally molding metal and resin makes it possible to design products having both the heat dissipation and electromagnetic wave shielding characteristics of metal and the lightweight and easy processability characteristics of resin, ensuring airtightness is a major issue.This is a summary of a metal-resin joining technology designed to resolve this issue, and an introduction of use examples and anticipated future applications for this technology.


Data Sheet Search