| 摘要 |
The invention relates to a foam adhesive compound for glueing together mineral materials, in particular bricks, wherein after application the compound collapses within a defined period without deliquescing. The compound contains an isocyanate-containing prepolymer, a propellant mixture, a catalyst and viscosity-regulating and/or flame-retardant additives, wherein the compound comprises at least one cell-opening agent in an amount of 0.002 to 1 wt %, based on the total compound, and a dimethyl ether content of more than 50 wt %, based on the propellant mixture. |
