AKTIFIT AM is an activated SILFIT Z 91, produced by modifying the surface with 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).

During compounding, the amino groups of AKTIFIT AM ensure good wetting and excellent dispersion in the matrix polymer. In addition, in polymers with suitable functional groups the use of this grade leads to high composite strength via hydrogen bonds or covalent bonds.