Extremely fast reacting, dual-component polyurethane resin with short reaction time



WILLPUR® WS-F is a hard-elastic polyurethane resin. It cures to a dimensionally stable injection material suitable for stopping water inflows or consolidating soil and loose rock. The low viscosity allows good penetration, allowing WILLPUR® WS-F to get into the tightest fissures, ensuring permanent consolidation.




  • very fast reacting PU resin with short reaction time and high final strength
  • foams easily on contact with water
  • adaptable injection system with addition of WILLADD® THIX and WILLADD® FAST
  • in combination with the above additives it reacts as an expanding, foaming waterstop system


  • Consolidation of the coal face in longwalls and seams to protect against near-surface breakout.
  • Consolidation in damp and water-bearing environments
  • Stabilization and sealing in tunnels



Curing time at 20°C [s]80 ± 10 (s)
Foam Factor1
Volumetric mixing ratio A:B1:1
TDS & MSDS available upon request 


 Packaging form 

Tin Canisters 20l Component A: 20 kg
Component B: 24 kg
Other packaging forms upon request


Dipl.-Ing. Karl-Heinz Lindenbauer

Head of Sales Civil Engineering & Mining (DACH region)

Phone:+49 231 9640 413
Mobile:+49 173 931 22 43

Dipl.-Ing. Paulo H. Tsingos

Head of Export Civil Engineering & Mining

Mobile:+49 173 940 58 40

Dipl.-Ing. Sergej Kremer

Internal Sales Civil Engineering & Mining East Europe

Phone:+49 231 9640 312
Mobile:+49 176 576 723 69
Fax:+49 231 9640 232

Peter Simon