Dynasylan^® 4144: a Hydrophilic Dispersion Aid

In the high volume production of composites, viscosity reduction is critical for easier processing. Highly filled composite systems are possible only when adhesion promoters are used. Combining adhesion promotion, chemical bonding to the inorganic substrate and viscosity reduction are properties that can be achieved by using Dynasylan^® 4144 in highly filled systems. By using this polar, non-reactive, and neutral silane, which does not provide chemical reactivity, mineral surfaces can be modified without losing their hydrophilic nature. Excellent wetting properties are achieved and consequently customized surface energy can be introduced to inorganic substrate surfaces. Particle dispersibility is improved, which leads to optimized mechanical performance of composites. As Dynasylan^® 4144 does not provide chemical reactivity beyond the silicon functional group, this product can be used in combination with all other products of the Dynasylan^® product range. Even self-dispersability can be achieved, as shown in the picture below.

	Red iron oxide treated with Dynasylan® 4144 (left) and untreated (right) after 10 s in water
	Self-dispersed red iron oxide treated with Dynasylan® 4144 (left) and untreated (right) after 20 s in water
	Self-dispersed red iron oxide treated with Dynasylan® 4144 (left) and untreated (right) after 60 s in water