| 12:30 - 13:30 uur |
Registration with lunch |
| 13:30 - 14:15 uur |
Jaarlijkse Algemene Ledenvergadering
Opening by Andre van Linden - Chairman NVVT |
| 14:15 - 15:00 uur |
Dispersion of Solid Particles
- Jochem Beetsma, Meritus Groep
The process of dispersion and stabilisation of solid particles (pigments and fillers) is important in paints. To prevent unnecessary work, the basics of the 3 steps to get from a dry power to a stable dispersion (wetting, separation and stabilisation) must be understood. Also, key information about the raw materials is needed. Technical Data Sheets, providing information about properties and behaviour of raw materials, are often vague, confusing or incomplete. We discuss examples of raw materials that are used to make dispersions of solid particles, analyse what their TDS documents tell us and whether or not this agrees with the theory of flocculation and sedimentation. |
| 15:00 - 15:45 uur |
Water-borne topcoats, it's the final flow that makes the coating shine
- Dr A.J. Reuvers and A. Veurink
The Big Chemistry consortium has been awarded 97M Euro from the Netherlands Growth Fund to set up a self-driving lab to accelerate discoveries in chemistry. Combining AI and high throughput experiments, we aim to change formulation science. Our first aims are to use AI to predict molecular properties such as solubility, CMC, surface tension and viscosity, not only of pure compounds but also of mixtures. Trained foundation models can then be used by various industries to accelerate research and product development. In this presentation, I will introduce the Big Chemistry consortium and discuss a number of initial use cases that serves as examples for future, larger projects.
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| 15:45 - 16:15 uur |
Break |
| 16:15 - 17:00 uur |
Silicon based coating chemistry, challenges and opportunities of a novel chemistry
- Thijs Tuinstra, Nano Composites Applied Technologies
Developing fossil-free coatings is a challenge for chemists. Silicon (Si) is an element below carbon in the periodic table and therefore is an interesting candidate for replacing carbon. Since 60% of the earth crust is silicon dioxide, silicon is more abundantly available than oil. The research describes the possible chemistry of some novel coating concepts of base 1K and 2K cured coatings using silicon based minerals and inorganic polymers. The presentation describes some history and background of similar coatings and why coating chemists should work in this interesting field. The details of chemical and physical properties of existing coatings are discussed.
|
| 17:00 - 17:45 uur |
Reduced complexity:inherently matte acrylics and cationic functionality without compatibility issues
- Nadir Boudra, Zschimmer & Schwarz
Using a proprietary process, Zschimmer & Schwarz offers an inherently matte acrylate polymer. After drying, a film with low gloss, high flexibility, excellent stability and, above all, excellent transparency is formed. The time- and labour-consuming incorporation of solid matting agents is eliminated, making the formulation much simpler, more stable and more economical.
The IPN technology (interpenetrating polymer network) of Zschimmer & Schwarz involves two different ionic structures in the same polymer network at a neutral pH value. These polymers form cationic functionalities during drying, providing excellent tannin, stain and dye blocking without the compatibility problems common to cationic polymers.
This talk outlines how these innovative polymer technologies benefit applications in graphic arts or wood coating, meeting the increasingly demanding requirements of modern coating formulations.
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| 17:45 - 18:15 uur |
Closure with appetizers and drinks |