Evonik

Dynasylan VTMOEO

Vinyltris(2-methoxyethoxy)silane

Dynasylan VTMOEO is a bifunctional organosilane possessing a reactive vinyl group and a hydrolyzable 2-methoxy-ethoxy-silyl group.

Key Features

The dual nature of its reactivity allows Dynasylan VTMOEO to bind chemically to both inorganic materials (e.g. glass, metals, fillers) and organic polymers (e.g. thermosets, thermoplastics, elastomers) thus functioning mainly as an efficient adhesion promoter and/or surface modifier.

Dynasylan VTMOEO is a colorless, low-viscosity liquid with a typical aromatic odor.

Recommended Applications

Adhesion promotion

  • Dynasylan VTMOEO acts as an adhesion promoter for various mineral-filled polymers improving their mechanical and electrical properties, especially after exposure to moisture.

Once bonded to an inorganic filler, Dynasylan VTMOEO hydrophobises the filler surface. This effect improves the compatibility of fillers with the polymer matrix, leading to a better dispersibility, reduced melt viscosity and easier processing of filled plastics. The principle of the adhesion promotion is shown below:

Dynasylan VTMOEO as co-monomer for polymer dispersions

  • Polymer dispersions (e.g. styrene acrylics), modified with Dynasylan VTMOEO show improved adhesion strenghth in wet conditions and wet scrub resistance.

Other applications

  • Dynasylan VTMOEO can also be used as additive in organic coatings to improve adhesion on inorganic surfaces (metals, glass, ceramic surfaces), as well as for surface treatment of inorganic pigments.