Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Toyobo GM-440 Crystalline Polyester Resin

Toyobo GM-440 is a high-purity crystalline polyester resin from Toyobo’s GM series, engineered for superior thermal stability, low melt viscosity, and excellent chemical resistance—ideal for high-performance engineering plastics, powder coatings, and specialty films requiring precise crystallinity control and consistent rheology.
  • toyobo gm 440 crystalline polyester resin_e3f49c8a
  • toyobo gm 440 crystalline polyester resin_e3f49c8a

Features Of Toyobo GM-440 Crystalline Polyester Resin

  1. High crystallinity enabling rapid melt solidification and excellent dimensional stability.

  2. Outstanding thermal resistance with continuous use temperature up to 150 °C.

  3. Low moisture absorption (<0.3% at 23 °C/50% RH), ensuring consistent processing and performance.

  4. Excellent chemical resistance to hydrocarbons, alcohols, and weak acids.

  5. Good flowability and low melt viscosity for efficient injection molding and extrusion.

Typical Applications Of Toyobo GM-440 Crystalline Polyester Resin

  1. Automotive under-hood components requiring heat resistance and mechanical rigidity.

  2. Electrical and electronic connectors and housings exposed to elevated temperatures.

  3. Industrial gears and precision mechanical parts demanding low creep and high fatigue resistance.

  4. Food-contact-compliant packaging trays (subject to regional regulatory approval).

  5. Reusable medical device components compatible with steam sterilization cycles.

Specifications Of Toyobo GM-440 Crystalline Polyester Resin

Chemical TypeCopolyester (crystalline, aromatic-aliphatic)
Product FormPellets
AppearanceOff-white, semi-crystalline granules
Melting Point (DSC, 10 °C/min)258–262 °C
Density (ASTM D792)1.32–1.34 g/cm³
Moisture Content (as received)≤0.15 wt%
Limiting Viscosity Number (LVN, 0.5 g/dL in phenol/1,1,2,2-tetrachloroethane)0.75–0.85 dL/g
Key FeaturesHigh crystallinity, fast cycle time, low warpage, halogen-free


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