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

Asahi KASEI TPA-90SB HDI Curing Agent

AsahiKASEITPA-90SBisaHDI-basedaliphaticpolyisocyanatecuringagentfromtheTPAseries,designedforhigh-performance2Kpolyurethanecoatings.Exhibitingexcellentweatherresistance,yellowingresistance,andfastcureatroomtemperature,itensuressuperiorsurfacehardnessandchemicalresistance.Idealforautomotive,aerospace,andindustrialfinisheswhereclarity,durability,andlowVOCarecritical.
  • asahi kasei tpa 90sb hdi curing agent_de8b94b1
  • asahi kasei tpa 90sb hdi curing agent_de8b94b1

Features Of Asahi KASEI TPA-90SB HDI Curing Agent

  1. High reactivity with hydroxyl-functional resins, enabling rapid room-temperature or low-bake curing.

  2. Excellent yellowing resistance and long-term UV stability for durable clear and pigmented coatings.

  3. Low viscosity and high solubility in common organic solvents, facilitating easy formulation and homogeneous mixing.

  4. Superior chemical resistance and hardness development in polyurethane and hybrid coating systems.

  5. Non-blocking, low-volatility aliphatic HDI-based trimer structure compliant with VOC-reduction requirements.

Typical Applications Of Asahi KASEI TPA-90SB HDI Curing Agent

  1. Automotive OEM clearcoats and repair topcoats requiring high gloss and weatherability.

  2. Industrial maintenance coatings for metal substrates in architectural and transportation sectors.

  3. Wood finishing systems demanding scratch resistance and clarity retention.

  4. Plastic coatings for automotive interior trim and consumer electronics housings.

  5. High-performance can coatings for food and beverage packaging applications.

Specifications Of Asahi KASEI TPA-90SB HDI Curing Agent

Chemical TypeAliphatic HDI-based isocyanurate trimer
Product FormLiquid
AppearanceColorless to pale yellow transparent liquid
NCO Content (wt%)17.5–18.5%
Viscosity (25°C, mPa·s)800–1,200
Density (25°C, g/cm³)1.18–1.22
Flash Point (°C, closed cup)145–155
Storage StabilityStable for ≥12 months at 25°C in sealed containers


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