Cytec presents a new 2K PUD binder for plastic coating applications. The binder provides the opportunity to deliver the desired balance of early and high hardness development, highest chemical resistance and excellent gloss combined with good flexibility. The product contains no VOC which makes it suitable for a wide variety of interior and exterior applications where now or low solvent odor is important.

Polyurethane dispersions and acrylic emulsions or dispersions are widely and successfully used in many clear coat systems today. Many applications however are still served by solventborne systems and a large potential for further growth in waterborne systems is still available.

Stefan Van Den Branden, Director of Technical Service and Development – Liquid Coating Resins, is highlighting some of the general chemical and process levers used to tailor resins for specific applications. For acrylics, he is presenting self-crosslinking and 2K isocyanate crosslinking under ambient or forced drying conditions. For the polyurethane technology the presentation is focusing on the isocyanate TMXDI® as a platform for 1K and 2K PUDs and on the development of UV-crosslinkable PUDs. New opportunities for acrylic and polyurethane clear coat systems will as well be discussed.

A new waterborne, modified solid epoxy resin dispersion with good flexibility and improved shear stability is presented. When this binder is used, high performance metal primers can be formulated without the use of anti-corrosion pigments. This is highly desirable since the toxicological effects of zinc phosphate and other zinc-based salts are causing environmental concerns. Primers formulated with this new resin provide equal or better corrosion resistance when compared to a number of waterborne and solventborne paint formulations, some of which contain anti-corrosion pigments.

Other advantages can also be obtained, including the possibility of formulating metal primers with VOC contents less than 100g/L. In addition, direct pigment grinding is possible under processing conditions typical for other standard waterborne epoxy dispersions.

Organic solvents are commonly used in 2-pack waterborne epoxy coatings such as high performance floor finishes. Generally, these solvents provide various benefits, such as facilitating proper film formation, making it easier to mix parts A & B together, and are also thought to extend the pot-life. However, due to new lower VOC limits on floor coatings enacted in the south coast region of California, the reduction or removal of organic solvents is desired.

By using specific raw materials and formulation techniques, it is possible to formulate garage concrete floor topcoats with VOC contents below 50g/L, while maintaining good performance properties and ease of field applications by do-it-yourselfers (DIY).

During this webevent you will learn more about the performance of acrylic emulsions, air drying waterborne alkyds and hybrids.
In addition, Jean-Pierre Chevillotte is giving an overview about all anti-corrosion technologies, as well as a comparison of waterborne and solventborne 2K- epoxies.

• The grinding process
• Traditional methods and technologies
• Requirements for modern pigment pastes
• New technologies and trends for pigment pastes