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

Covestro Desmodur 44V20 Curing Agent

Covestro Desmodur 44V20 is a high-reactivity aliphatic polyisocyanate curing agent from the Desmodur® V 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 high-performance topcoats requiring low viscosity and fast ambient-cure capability.
  • covestro desmodur 44v20 curing agent_71a56ddc
  • covestro desmodur 44v20 curing agent_71a56ddc

Features Of Covestro Desmodur 44V20 Curing Agent

  1. Highly reactive aromatic isocyanate based on diphenylmethane diisocyanate (MDI) with optimized viscosity for easy handling and metering.

  2. Low monomeric MDI content (< 0.5 %), supporting improved occupational safety and regulatory compliance.

  3. Excellent compatibility with polyols and amine-terminated resins, enabling broad formulation flexibility in two-component systems.

  4. Delivers outstanding mechanical properties—including high tensile strength, abrasion resistance, and thermal stability—in cured elastomers and coatings.

  5. Consistent batch-to-batch quality ensured by Covestro’s stringent GMP-aligned manufacturing standards.

Typical Applications Of Covestro Desmodur 44V20 Curing Agent

  1. Reaction injection molding (RIM) and reinforced RIM (RRIM) for automotive structural parts and exterior trim.

  2. High-performance polyurea and hybrid polyurethane/polyurea coatings for industrial flooring, tank linings, and corrosion protection.

  3. Cast elastomer systems used in mining screens, pump housings, and heavy-duty rollers.

  4. Adhesives and sealants requiring rapid green strength development and long-term durability under dynamic stress.

  5. 3D printing resins and specialty binders for advanced composite manufacturing.

Specifications Of Covestro Desmodur 44V20 Curing Agent

Chemical TypeAromatic polyisocyanate (modified MDI)
Product FormLiquid
AppearanceClear to pale yellow, homogeneous liquid
NCO Content (wt %)31.5 – 32.5
Viscosity at 25 °C (mPa·s)150 – 250
Specific Gravity (20/20 °C)1.21 – 1.23
Monomeric MDI Content< 0.5 %
Storage Stability (unopened, 15–25 °C)≥ 12 months


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