Kowa American Corporation

PPR F520

Polyaspartic Polyurea Resin F520

PPR F520 is an aminofunctional co-reactant for polyisocyanates useful for the formulation of high-solids, two-component polyurethane topcoats and solvent-free coatings. PPR F520 can be reacted with -NCO functional HDI trimmer resulting in a longer gelling time and excellent yellowing resistance.


Molecular Weight 582
Appearance Slightly Yellow Transparent Liquid
Solids 96% +/- 2%
Amine Value (mg KOH/g) 189-193
Amine Equivalent (g/mol) 291


  • Flexibility
  • Hardness
  • Resins
  • Weatherability


  • Resins