Proper rheological control of particle suspensions is critical to many diverse application areas. Generally speaking, the everyday use of water-based materials in the form of pastes and suspensions often rely on having the consistency of the material controlled. The performance and use of these materials thus depends the right rheological behaviour.
A similar, but possibly even more critical dependence on rheological parameters, is found in many industrial processes. Examples here include various types of slurry production, as encountered during pumping, milling and spray-drying.
Borregaard LignoTech’s lignin-based dispersants are used within a wide range of applications for the purpose of modifying the rheology of dispersed aqueous systems. They offer rheology control primarily in terms of viscosity reduction and prevention of gel formation. Typical applications where our dispersants have an established use for rheology control of reactive systems are: water reduction (plasticisers) in cementitious and gypsum-based systems and for control of solids in ore slurry transport.
Our products are also used for rheology control of inert systems, such as those encountered in agrochemical and dyestuff applications. In these cases, they have proven to be efficient dispersants of aqueous systems for both organic and inorganic particles.