Dynasylan® 4148

Dynasylan® 4148 by Evonik is a ready ­for ­use silane. It helps to control rheological properties and to reduce viscosity in highly­ filled polymer systems, like aluminum trihydroxide-­filled polyesters or SMC­ pastes. Contrary to most other organofunctional silanes, it features chemical polarity yet remaining chemically not reactive. It is used as a hydrophilic compatibilizer rather than a covalent adhesion promoter. It can be used as anti­-settling agent for corrosion inhibitors in glycol-based cooling agents. As a non-­coupling silane, it can also be used as a slipping agent to simply modify a surface. Dynasylan® 4148 helps to increase pigment dispersion predominantly in aqueous media, thus leading to an enhanced gloss of a typical coating. It can be added neatly to a blend of filler or pigment, or can be used for the pretreatment of the filler or pigment. It has a minimum shelf life of 1 year.