Wacker Chemie Ag

Michael Dreyer

Herbert Barthel

Torsten Gottschalk-Gaudig

Suspensions having good flow properties are produced by including a particulate thickener containing chemically or physically bound polymer.

Stabilized fumed silica suspensions for reinforcement of reactive resins

Suspensions of fine particles in a liquid containing a colloid-scale adhesive produce coatings and shaped articles which are both porous and robust.

Reactive silicic acid suspensions

Silicas modified with groups of the general formula (I)RSiRO&#x2014;&#x2003;&#x2003;(I)where at least one of R or Ris a &#x3e;Chydrocarbon radical are useful in preparing stable dispersions of basic substances, the silica permitting a decrease in the shear viscosity h for a storage time of 1 week at room temperature (25&#xb0; C.) to not more than 50% of the initial viscosity value, the viscosity being measured by means of cone/plate geometry with a shearing gap of 105 &#x3bc;m and a shear rate of 0.5 sat 25&#xb0; C.

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Burgkirchen, Germany

Michael Dreyer