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

Tosoh CORONATE HK Curing Agent

Tosoh CORONATE HK Curing Agent is a high-performance aliphatic polyisocyanate crosslinker from Tosoh’s CORONATE series, designed for premium two-component polyurethane coatings. It offers excellent weather resistance, low viscosity, and fast curing at ambient temperatures—ideal for automotive refinishes, industrial finishes, and high-gloss topcoats requiring superior gloss retention and chemical durability.
  • tosoh coronate hk curing agent_61399240
  • tosoh coronate hk curing agent_61399240

Features Of Tosoh CORONATE HK Curing Agent

  1. Highly reactive aliphatic isocyanate-based curing agent for fast ambient- and low-bake-cure systems.

  2. Excellent weatherability and UV resistance due to aliphatic structure—ideal for exterior applications.

  3. Low viscosity enables easy handling, precise metering, and superior compatibility with common hydroxyl-functional resins.

  4. Non-yellowing performance ensures long-term gloss and color retention in clearcoats and pigmented coatings.

  5. Complies with major global VOC regulations when formulated appropriately; supports low-VOC coating design.

Typical Applications Of Tosoh CORONATE HK Curing Agent

  1. Automotive OEM clearcoats and topcoats requiring high durability and gloss stability.

  2. Industrial maintenance coatings for bridges, steel structures, and architectural facades.

  3. High-performance plastic coatings for automotive trim and electronic housings.

  4. Premium wood finishes demanding clarity, hardness, and resistance to abrasion and solvents.

  5. Railway and bus exterior coatings where long-term color fidelity and chalking resistance are critical.

Specifications Of Tosoh CORONATE HK Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer, blocked/unblocked)
Product FormLiquid
AppearanceClear, pale yellow to colorless liquid
NCO Content (wt%)15.5–16.5%
Viscosity at 25°C (mPa·s)800–1,200
Density at 25°C (g/cm³)1.18–1.22
Solvent ContentAcetate-based (e.g., ethyl acetate, propylene glycol monomethyl ether acetate)
Primary ApplicationsTwo-component polyurethane coatings (2K PU) for automotive, industrial, and architectural use


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