Polyurethane system, very fast reacting two-component injection resin


Product description

WILLPUR® HF is a Polyurethane (PU) foam. They are injection resins designed to expand by foaming with or without water, in this way they can be injected as a liquid that then foams and expands to fill voids and smaller cavities in rock-structures or loose ground. These materials have good adhesion to the rock and remain firm and rigid after the foaming process has finished. Therefore, these polyurethane foam resins are widely used for and stabilizing requirements in both Tunnels and mines. WILLPUR® HF A (Resin) is a mixture of various polyols and additives. (WILLPUR® HF B (Catalyst) is a modified polyisocyanate.)


Product details


  • sast foaming PU resins with short reaction times (<45sec.)
  • Foams in contact with and without water, up 10- 15 times
  • strong adhesion and strong foam

Main usages:

  • stabilization of disintegrated rock with high void content
  • filling of smaller cavities


Technical specifications

Cure time (20°C):~ 33 (s)
Foam Factor:~ 30
Mixing ratio:1:1
TDS & MSDS on request 


Packaging units

Dual component cartridges (400ml)Comp. A 200 ml
+ Comp. B 200 ml
Tin can à 20l (40l)Comp. A 22 kg
+ Comp. B 25 kg
Other delivery forms on 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