Evonik Dynasylan 4148 is a non-ionic polyether silane designed to enhance the wetting, dispersion, and rheological properties of fillers and pigments in various polymer and solvent systems. It acts as a highly effective compatibility agent without covalent bonding activity.
Superior Dispersion – Ensures excellent filler and pigment wetting in resins and solvents.
Viscosity Reduction – Lowers viscosity in highly filled polymer systems (e.g., aluminum hydroxide-filled polyesters).
Water Compatibility – Functions as a dispersant in aqueous systems without chemical reactivity.
Non-Coupling Action – Provides polar compatibility without forming covalent bonds, ideal for rheology control.
Composite Materials – Reduces viscosity in SMC/BMC and aluminum hydroxide-filled unsaturated polyesters.
Coatings & Inks – Enhances pigment dispersion and gloss in water-based formulations.
Coolant Systems – Prevents settling of anticorrosion components in glycol-based coolants.
Glass Fiber Processing – Acts as a lubricant and wetting agent alongside coupling agents.
High-Loading Systems – Enables higher filler/pigment loading while maintaining workable viscosity.
Chemical Type | Non-ionic Polyether Silane |
Function | Dispersion Aid & Rheology Modifier |
Ionic Nature | Non-ionic |
Solubility | Water and most solvents |
Recommended Usage | ~1% (on filler weight) |
Compatible Systems | Aqueous, Solvent-based, Polyester, SMC/BMC |
Key Benefit | Viscosity reduction in highly filled systems |
Shelf Life | 1 year (sealed) |
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