AkzoNobel Surface Chemistry has developed Agrilan™ 752, a new polymeric stabilizer for aqueous suspensions in agro applications.

A suspension concentrate is a common formulation type for crop protection within the agro industry, consisting primarily of pesticide particles, water, and dispersant. AkzoNobel’s own product, Morwet® D-425, is an excellent and commonly used dispersant in these systems.

A new trend is to add adjuvants (surfactants or oils) into the formulations, but this is not without complications. In specific circumstances the adsorption strength of common dispersants to particle surfaces can be insufficient to provide long-term stability for complex formulations, e.g.:
- when non-ionic adjuvants or oils are added
to the suspension concentrates
- when formulating high density actives
- in high-loading suspension concentrates

In this case a co-dispersant must be used to stabilize the system. When traditional surfactants fail, the formulation chemist can now solve the stability problems with a new polymeric stabilizer: Agrilan™ 752. Complex aqueous dispersions, which contain either multiple active ingredients or built-in oils and non-ionic adjuvants, can now easily be formulated.

This water-soluble polymer ester has a unique double comb structure, which contributes to its performance as steric dispersant, emulsifier and stabilizer.

For aqueous dispersions, combining the use of Agrilan 752 with Morwet D-425 offers a unique stabilization system for today’s agricultural applications.