Industry News

Evonik Introduces TEGOVAPRO® Technology for Glossy Exterior Coatings

Published on 2015-09-25. Author : SpecialChem

TEGOVAPRO® technology delivers glossy exterior coatings that are water repellent from the outside but permeable to water vapor from the inside. This Evonik innovation simply replaces one part of the primary binder, giving the formulation a new property at little additional effort or expense. The new product allows Evonik to help its customers formulate high-quality exterior coatings ranging from semi-matte to high-gloss.

Fig. 1: Evonik

Builders have traditionally resisted using glossy paints for exteriors. While these coatings keep water out, they are not breathable. When water vapor presses against the coating from the inside, it often produces cracks or bubbles. The problem is more than simply aesthetic – it can also damage the exterior over the long term. The glossier the coating, the more likely it is to form cracks and bubbles. TEGOVAPRO® prevents these defects with no negative impact on other formulation properties. The weather resistance of the coating remains unaffected as well. This means that TEGOVAPRO® manufacturers can formulate glossy exterior paints that are as breathable as matte paints.

TEGOVAPRO® is based on a multilayered acrylate dispersion. "Our customers are very keen to avoid having to develop a new formulation," explains Daniel Brünink, director of global marketing for decorative coatings. "That's why we made a point of making TEGOVAPRO® as simple to use as possible. Replacing just 20% of the primary binder is enough to produce a significant effect."

For matte exterior coatings that are breathable but not water repellent, Evonik offers TEGO® Phobe, an additive that lends coatings hydrophobic properties, making them weather resistant without impacting breathability.

About Resource Efficiency

The Resource Efficiency segment is led by Evonik Resource Efficiency GmbH and brings together Evonik’s activities in specialty chemicals for industrial applications. The Resource Efficiency segment supplies high performance materials for environmentally friendly as well as energy-efficient systems to the automotive, paints & coatings, adhesives, construction, and many other industries. This segment employed about 7,800 employees, and generated sales of around €4 billion in 2014.

About Evonik

Evonik, the creative industrial group from Germany, is one of the world leaders in specialty chemicals, operating in the Nutrition & Care, Resource Efficiency and Performance Materials segments. The company benefits from its innovative prowess and integrated technology platforms.

Source: Evonik

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