Functional ­fillers PAINTS and VARNISHES Reactive resins Adhesives and sealants We supply material for good ideas Neuburg Siliceous Earth Contents Products Products3 Neuburg Siliceous Earth  4 Sillitin & Sillikolloid – Morphology  4 Separation process 6 Sillitin & Sillikolloid – Particle size distribution 8 Sillitin & Sillikolloid – Color neutrality  10 Sillitin & Sillikolloid – Product characteristics  12 Puriss14 Puriss – Products with improved dispersion properties 14 Aktisil – Product characteristics  16 Calcined Neuburg Siliceous Earth  18 Created by a downstream process. The extremely low residue of > 40 µm is reduced even more and the dispersion properties are improved. Silfit & Aktifit – Morphology  18 Silfit & Aktifit – Comparison of particle size distribution 20 Silfit & Aktifit – Colors according to CIELAB 22 Silfit & Aktifit – Product characteristics  24 Filler properties in paints and varnishes  26 Silfit18 Typical applications in paints and varnishes  30 Filler properties in reactive resins, adhesives and sealants  50 Calcined products based on Sillitin. A downstream thermal process gives the product additional application advantages as a functional filler. Typical applications in reactive resins, adhesives and sealants  54 Aktifit18 Packaging  72 Testing methods  74 An activated Silfit produced through surface treatment with special additives. 2 Sillitin | Sillikolloid4 Standard products (natural, untreated fillers). Differ in brightness and particle size distribution. Aktisil16 Surface-treated products. Neuburg Siliceous Earth modified with additives. 3 Neuburg Siliceous Earth Neuburg Siliceous Earth Sillitin | Sillikolloid Morphology Classic Neuburg Siliceous Earth is a natural combination of corpuscular Neuburg Silica and lamellar kaolinite: a loose mixture impossible to separate by physical methods. As a result of n­ atural aging, the silica portion exhibits a­ round grain shape and ­consists of aggregated primary par­ ticles of about 200 nm diameter. Such a unique ­structure is responsible for a relatively high specific surface area and oil ab­sorption, which result, besides ­rheological activity, also in a whole range of application properties. 4 5