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

Covestro Desmodur 670BA Curing Agent

Covestro Desmodur 670BA is a high-performance aliphatic polyisocyanate curing agent from the Desmodur® series, designed for premium two-component polyurethane coatings. It delivers excellent UV stability, gloss retention, and chemical resistance—ideal for automotive clearcoats, industrial finishes, and demanding outdoor applications requiring long-term durability and low yellowing.
  • covestro desmodur 670ba curing agent_5537557e
  • covestro desmodur 670ba curing agent_5537557e

Features Of Covestro Desmodur 670BA Curing Agent

  1. Aliphatic polyisocyanate-based curing agent offering excellent UV stability and color retention.

  2. Low viscosity enables easy handling, precise metering, and improved formulation compatibility.

  3. Provides outstanding chemical resistance—particularly to hydrolysis, solvents, and weathering.

  4. Enables fast ambient- or low-bake cure profiles without compromising film hardness or flexibility.

  5. Complies with major global regulatory frameworks including REACH and VOC-compliant formulations.

Typical Applications Of Covestro Desmodur 670BA Curing Agent

  1. High-performance automotive clearcoats and basecoats requiring long-term gloss and durability.

  2. Industrial maintenance coatings for offshore, wind turbine, and heavy equipment protection.

  3. Premium architectural façade and metal cladding systems exposed to harsh environmental conditions.

  4. Plastic and composite coatings where non-yellowing and adhesion to thermoplastics are critical.

  5. Wood coatings for premium furniture and flooring demanding scratch resistance and clarity.

Specifications Of Covestro Desmodur 670BA Curing Agent

Chemical TypeAliphatic polyisocyanate (hexamethylene diisocyanate trimer, NCO-functional)
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 20 °C (g/cm³)1.20 – 1.24
Flash Point (PMCC, °C)135 – 145
SolventAcetate-based (e.g., butyl acetate), solvent-free grade available upon request


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