AKTIFIT PF 115 is an activated SILFIT Z 91, produced by modifying the surface with special amino functional silane. The by-products split off during the treatment reaction are largely removed during the production process which firmly attaches the silane to the filler surface. This helps minimize undesirable side effects, as they are potentially encountered with insitu mixing (direct addition of silane to the compound).

A special process technology during the production of AKTIFIT PF 115 provides high hydrophobicity as well as outstanding low moisture absorption even under very humid conditions. During compounding, the hydrophobic amino groups of AKTIFIT PF 115 ensure good wetting and excellent dispersion in the matrix polymer. In addition, in polymers with suitable functional groups the use of this filler leads to high composite strength via hydrogen bonds or covalent bonds.