4.3 Improved Durability Through Reactive Dispersant Technology
(Room 234-236)
09 Apr 18
3:00 PM
-
3:30 PM
Tracks:
Session 4: Grinding & Dispersing, Session 4: Novel Materials
Even though formulation additives form only a minor part of a coating formulation, they can have pronounced effects on the physical properties of the final coating. This is especially true for pigment dispersants, which can enter a coating formulation “under the radar” through, for example, pigment pastes. As dispersants are often polar polymers with a low glass transition temperature, the interface between the pigment and continuous phase forms a weak point, especially in coatings designed for high-durability.
In this paper, we address the development of a new dispersant technology. The dispersants are functionalized such that they become part of the continuous phase of the coating, improving overall film integrity. Application examples in both waterborne and solvent borne formulations will discuss the effects of this reactive technology on mechanical and barrier properties in comparison to conventional systems.