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

Toyobo RN-9300 Crystalline Polyester Resin

Toyobo RN-9300 is a high-purity crystalline polyester resin from Toyobo’s RN series, engineered for superior thermal stability, precise melt viscosity control, and excellent hydrolytic resistance. Widely used in high-performance engineering plastics, specialty films, and precision injection molding applications requiring consistent crystallinity and processing reliability.
  • toyobo rn 9300 crystalline polyester resin_841e4dc3
  • toyobo rn 9300 crystalline polyester resin_841e4dc3

Features Of Toyobo RN-9300 Crystalline Polyester Resin

  1. High crystallinity enabling rapid melt solidification and excellent powder flowability.

  2. Outstanding storage stability with minimal agglomeration under ambient conditions.

  3. Low melt viscosity during curing, ensuring uniform film formation and reduced pinholes.

  4. Excellent chemical resistance to solvents, acids, and alkalis after full crosslinking.

  5. Compatible with standard TGIC and hydroxyalkylamide (HAA) curing agents for robust thermoset networks.

Typical Applications Of Toyobo RN-9300 Crystalline Polyester Resin

  1. Architectural and industrial coil coating systems requiring high gloss retention and weather resistance.

  2. High-performance powder coatings for outdoor metal furniture and fencing.

  3. Automotive under-hood components demanding thermal and chemical durability.

  4. Prefabricated building panels requiring long-term UV stability and color consistency.

  5. Appliance exteriors requiring smooth finish, scratch resistance, and low-temperature cure capability.

Specifications Of Toyobo RN-9300 Crystalline Polyester Resin

Chemical TypeCrosslinkable crystalline polyester
Product FormFree-flowing white crystalline granules
AppearanceWhite to off-white crystalline solid
Acid Value (mg KOH/g)28–32
Gel Time (180°C, seconds)60–90
Melt Viscosity (200°C, Pa·s)1.5–2.5
Crystallinity (DSC, %)≥45
Primary ApplicationsThermoset powder coatings for metal substrates


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