"Good rheology modification may help reduce overall costs"

Complexity is one of the main obstacles for paint formulat designers. We interviewed Yannick Nabil-Moreau, global technical manager at Arkema, about the role of additives in reducing complexity and other trends in the additive industry.
you see that the development of the additive industry may lead to a reduction in the complexity of coating formulat designers?
Nabil-Moreau: Complexity is part of our everyday life in the paint industry

. Choosing the right additive is as important as other ingredients in the formula! Therefore, additives remain a tool for controlling a variety of complex requirements. High-strength corrosion-resistant coatings are a major pillar of the marine and protective coatings industry and require long-term protection in harsh environments with high corrosiveness.
coating manufacturers face increasingly challenging requirements: improved performance requirements, formulation cost pressures, complex regulatory matters, product management, reduced VOC content, hazard reduction, sustainability goals, process reproducibleness, aesthetic challenges, and more.
additives are used as problem solvers in coating formulations. The amount usually introduced into the system is usually very small, usually less than 1%, but their impact on performance and its benefits is significant. By adding viscosity thickeners, high-solid and solvent-free coatings can be modified to control fluidity and fluidity, and thickeners induce fluid properties in coatings. In order to obtain satisfactory flow control without losing fluidity and leveling, it is necessary to select a fluid modifier - touch denaturation - with a certain amount of time-dependent response. The true degree of tentacles depends on the type of fluid modifier.
do you think will affect the additive market in the near future?
-Moreau: Today, many formulat designers are under pressure to further reduce VOCs for all industrial coatings, including marine and protective coatings. This trend usually shifts formulations to very high solid and/or solvent-free systems. Countries such as China and South Korea are paying close attention to these new regulations, which affect global markets, and are driving the development of high-solid formulations, where VOCs compete with standard water-based coatings.
addition to reducing VOC content, the economics of the actual coating process allow significant cost savings to be achieved by providing the fewer coatings required for the film thickness of a particular system. Coatings with higher solid content can reduce the number of coatings required. Therefore, good fluid change can even help reduce the total cost of the system.
However, it is well known that the application of high-strength coatings is more than simply coating more; high-strength films and high-solid coatings exacerbate critical film appearance problems, such as drooping, collapse, good edge covering and excellent fluidity - these are key properties of effective corrosion-resistant coatings.
High-solid solvent-based and/or solvent-free coatings usually mean a relatively low proportion of volatile (VOC) materials that can evaporate into the atmosphere after application, minimizing the difference in film thickness between wet and subsequent dry films.
in conventional solid coatings, evaporation of volatile solvents immediately results in an increase in the viscosity of the coating, which allows the accumulation of coatings to have an easy-to-control flow and thus control sagging.
, for higher solid coatings, the effect of solvent loss on increased viscosity may be relatively low (due to higher solid content and lower solvent content). Coatings with higher solid contents are present as low viscosity, easy-to-flow materials immediately after application. The development of crosslinking is stable rather than rapid (due to low molecular weight elements), so the chances of flow control will be poor unless the right additives are used for fluid change.
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