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Alcure® 4431 is a high performance, polymeric aliphatic isocyanate hardener based on H12MDI and blocked with E-caprolactam. It is specially designed to yield coatings with significantly better overbake and UV yellowing resistance. When properly formulated in coating powders, this product will yield a coating with excellent flow and chemical resistance and good overall physical properties.

Functions: Hardener

Chemical Family: Aliphatics, Isocyanates

Features: Chemical Resistance, Low Temperature-Curing

Technical Data Sheet
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Identification & Functionality

Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

Product Highlights
  • Enhanced yellowing resistance at high temperatures
  • Enhanced UV resistance compared to Alcure 4430
  • Good flow
  • Good overall performance
  • Reduced yellowing and improved UV resistance compared to Alcure 4430
  • Good chemical resistance
  • Lower temperature cure than Alcure 4400

Applications & Uses

Recommended Application Areas
  • Aeronautical
  • Automotive
  • Building and Construction
  • Coatings
  • Food contact
  • Furniture
  • Industrial sector
  • Marine
  • Mass Transports

Properties

Physical Form
Exterior Grade
Yes
Typical Properties
ValueUnitsTest Method / Conditions
NCO equivalent Weight333.0g-
Thermal Properties
ValueUnitsTest Method / Conditions
Glass Transition Temperature(Tg)55°C-

Regulatory & Compliance

Chemical Inventories