POWDERY, WATER-ABSORBENT POLYMERS COMPRISING FINE PARTICLES BONDED BY MEANS OF THERMOPLASTIC ADHESIVES

摘要

The invention relates to powdery water-absorbent polymers comprising: 0.01 to 20 percent by weight of a fine particle having a particle size of less than 200 µm; 0.001 to 10 percent by weight of a thermoplastic adhesive; and 60 to 99.998 percent by weight of a water-absorbent polymer particle having a particle size of at least 200 µm. The fine particles are connected to the surface of the water-absorbent polymer particle via the thermoplastic melt adhesive. The powdery water-absorbent polymers have a flow coefficient (FFC) ranging between 1 and 13 or a maximum dust ratio of 6. Also disclosed are a method for producing powdery water-absorbent polymers, the powdery water-absorbent polymers obtained by means of said method, a conveying method, a compound, chemical products, and the use of a thermoplastic adhesive.