Powder coating additives
General information
Chemical additives solutions used in the production of powder coatings Powder coating is an advanced protective coating technology that has minimal environmental impact, in which free-flowing dry powder is applied to the surface of materials using electrostatic methods. After application, the coating undergoes a thermal curing process to melt, forming a high-durability protective polymer film. This technology is primarily applied in coating metal surfaces, including products such as household appliances, extruded aluminum, drum accessories, and parts of cars and bicycles, ensuring corrosion resistance and enhancing the aesthetics of the product. Additives for powder coatings play an important role in improving the performance and quality of the final coating. These additives ensure the highest quality standards, providing reliability and superior efficiency for the powder coating production process. Below are some typical chemical additives. Adhesion promoter: TEGO® AddBond Gloss enhancer: TEGO® Variplus Mattifying / Scratch resistance: SPHERILEX®, AEROSIL®, ACEMATT® Anti-caking / Flow aid: AEROXIDE®, AEROSIL®, TEGO® Powder Aid Wetting / Color dispersion: TEGO® Powder Aid
Increased adhesion:
TEGO® AddBond
Using linear structured, unsaturated polyester technology with low molecular weight, the TEGO® AddBond product line enhances adhesion not only between the paint film and metal surfaces or between different paint layers but also improves corrosion resistance, hardness, gloss, and yellowing resistance.
Increase gloss
TEGO® Variplus
TEGO® VariPlus is a ketone-aldehyde co-binder resin, along with specialty resins developed from it, designed to enhance various paint properties. These resins have low molecular weight, a light natural color, and high compatibility. Besides enhancing the gloss of the paint film, TEGO® VariPlus improves adhesion, hardness, and corrosion resistance of coatings. It also enhances pigment wetting and stability, allowing for higher pigment loading and color intensity in paint systems.
Matte / Scratch Resistant:
SPHERILEX® , AEROSIL®, ACEMATT®
SPHERILEX® DP-0115 is a unique precipitated silica produced through a patented continuous loop reaction process. This product offers a low oil absorption similar to current fillers, yet the particles are highly uniform with a narrow particle size distribution. SPHERILEX® DP-0115 serves as a novel matting agent for powder coating formulations, enabling:
Effective and controllable matting,
Uniform and consistent matte appearance,
Enhanced hardness and flexibility, and
Post-addition adjustability for matte levels.
In addition to providing high matting efficiency with minimal impact on melt viscosity, its uniform distribution enhances the hardness and flexibility of powder coating formulations, suitable for general metal, automotive applications, as well as temperature-sensitive substrates such as wood and plastic.
Anti-caking / Flowing agent:
AEROXIDE® Alu C, AEROSIL® 200 / R972 / E972, TEGO® Powder Aid
AEROXIDE® Alu C is a renowned aluminum oxide known for optimizing the manufacturing process, quality, appearance, and overall performance of powder coatings. Properties like free flowability, powder utilization efficiency, and edge coverage are all improved with AEROXIDE® Alu C. Moreover, AEROXIDE® Alu C assists in controlling powder electrostatics in tribo applications (positive surface charge) and provides superior anti-caking effects, especially with water-repellent AEROXIDE® Alu C products.
Wetting / Color Dispersion:
TEGO® Powder Aid
TEGO® Powder Aid D01 is a multifunctional polymer additive comprising 100% active particles for powder coatings. When incorporated into powder coating formulations, this effective additive reduces melt viscosity, enhancing degassing efficiency. TEGO® Powder Aid D01 improves pigment wetting and dispersion during extrusion. This new additive significantly contributes to gloss and distinctness of image (DOI) while offering positive attributes to powder coating formulations without containing any surfactant waxes. Consequently, no issues arise with recoatability.