Industry News, Science and Technology, and Market Insight
Epoxy-based polymer resins are an important part of the automotive clearcoat and powder coating markets. A new class of metal-free catalysts has been developed that promotes the crosslinking reaction of epoxy functional polymers with carboxyl functional compounds and polymers. Effective at much lower cure temperatures, these catalysts provide stable single package formulations and improved resistance properties. In addition, they do not yellow during cure or on over-bake.
Producers of solvent-based wood coatings often experience the following challenge: Additives that provide good haptic (feel/touch) properties are not recoatable—and vice versa. Evonik has launched a new product that provides both of these properties—TEGO® Glide 496. The new TEGO® Glide 496 is suitable for both solvent- and water-based formulations, has excellent compatibility, and demonstrates scratch-resistance improvement in various systems. The additive is globally registered and complies with various food contact regulations. Besides wood lacquers, the coatings industry has a growing interest for such a new additive in plastics, industrial, and transportation coatings as well as printing inks.
WACKER has introduced its product line VINNEVA®. The polymer binders are manufactured to enhance the properties of bitumen-based building coatings and to help ensure that they adhere to concrete, brick, and cement. They are also engineered to protect roofs and basements from the ingress of water. Water-pressure tests have revealed that when water presses onto a coated concrete slab at high pressure for a full day, VINNEVA-modified bitumen forms a more effective barrier than bitumen emulsions modified with other additives. More details can be obtained at www.wacker.com.