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

Tosoh HXR-90B NPU Curing Agent

Tosoh HXR-90B NPU Curing Agent is a high-performance polyol-based curing agent from Tosoh’s HXR series, designed for advanced polyurethane elastomers and coatings. It delivers exceptional hydrolytic stability, low viscosity, and rapid room-temperature cure—ideal for demanding automotive and industrial applications requiring durability and precision.
  • tosoh hxr 90b npu curing agent_862a07f4
  • tosoh hxr 90b npu curing agent_862a07f4

Features Of Tosoh HXR-90B NPU Curing Agent

  1. High reactivity with polyols, enabling rapid gelation and reduced cycle times in thermoset processing.

  2. Excellent compatibility with aromatic and aliphatic isocyanates in non-polyurethane (NPU) systems.

  3. Low volatility and minimal odor, supporting safer handling and improved workplace air quality.

  4. Thermal stability up to 180 °C, maintaining structural integrity during high-temperature curing stages.

  5. Consistent batch-to-batch performance, certified under ISO 9001-compliant manufacturing controls.

Typical Applications Of Tosoh HXR-90B NPU Curing Agent

  1. Electronics encapsulation resins requiring low-ionic impurity and high dielectric strength.

  2. High-performance composites for aerospace tooling and mold-making matrices.

  3. Advanced potting compounds used in automotive power electronics and EV battery modules.

  4. Structural adhesives for metal-to-composite bonding in industrial assembly.

Specifications Of Tosoh HXR-90B NPU Curing Agent

Chemical TypeAmine-based latent curing agent
Product FormPowder
AppearanceOff-white to light beige free-flowing powder
Primary ApplicationsEpoxy and phenolic resin systems (non-polyurethane)
Key FeaturesLatent reactivity, low moisture sensitivity, high thermal latency
BenefitsExtended pot life at ambient temperature; sharp cure onset above 130 °C
Storage ConditionsStore sealed under dry nitrogen at 5–25 °C; protect from humidity
Shelf Life12 months from date of manufacture under recommended conditions


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