Setting new standards for Architectural Coatings

Date: 19/09/2022
Autor: Sponsored

In today's environmentally conscious marketplace, formulators are challenged to be sensitive to the potentially negative environmental impacts of their systems. As global trends and regulations move away from many traditional materials, formulators are looking to transition to more environmentally friendly systems. Formulators are also challenged with reducing or even eliminating VOCs from their architectural systems. Furthermore, the desire to extend the longevity and durability of coatings is strong as this also pays into the trend of sustainability.

SPHERILEX® - Bringing abrasion resistance to your Architectural Coatings

Evonik has developed SPHERILEX®, a novel silica technology for the coatings industry. These novel spherical silica particles increase the durability of architectural paints by improving their mechanical resistance.

Durable and sustainable

Interior wall paints usually consist of a mixture of solid particles, with different particle sizes and morphologies. In matt finish paints, that leads to a rough and irregular surface. While this is necessary for the matt or deep matt appearance of the paint, it also makes it vulnerable to damage by mechanical stress. Burnishing is a form of physical damage to the appearance of the coating film, caused by polishing or abrasive forces. Repeatedly wiping an area with a soft textile or sliding along it with the elbow or a soft object, increases the gloss in this spot. This causes the paint finish to appear patchy or even damaged, as affected areas are clearly visible due to the uneven gloss. The effect is particularly noticeable for interior wall paints in dark colors. However, formulations with spherical particles produce significantly more robust surfaces. As a result, coatings have a much higher tolerance for abrasion and show a greater resistance to burnishing and scuffing. The spherical particles in SPHERILEX® prevent direct contact with items that wipe over the surface, leading to less abrasion.

SPHERILEX® achieves great results in tactile experience, as it enables formulators to produce paints with a textured effect for interior wall paints. Its spherical surface texture counteracts the roughness of the paint to the extent that a velvety surface is created with outstanding haptic.

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On COATINO® Campus we additionally offer a variety of trainings, lab videos and live event recordings with a focus on new, innovative products.

TEGO® Phobe - Hydrophobing agents for protecting façade paints and plasters

For decades, facade paints have had two important functions: They lend an attractive appearance and offer protection from the effects of weathering. Therefore, producers of premium facade paints have worked hard to optimize these two properties in their products. Silicone resin paints are now state-of-the-art options for exterior applications. These paints contain emulsified silicone resins in addition to a primary binder. Such paints have excellent weathering resistance and a long service life. Over the last few years, however, customer requirements have increased. The color selection needs to be larger. The facade needs to be better protected against dirt pick-up than before and all these performance characteristics need to be achieved by environmentally compatible means.

Evonik raises the bar for façade paints and plasters with its new silicone resin technology. Check out our factsheet for TEGO® Phobe 1659 and 1409:

In addition, Evonik offers a whole portfolio of ecolabel compliant additive solutions for your exterior facade paint:

TEGO® Viscoplus - Rheology modifier for waterborne Decorative Coatings

Rheological factors play a key role in all stages of a coating’s lifetime, from the manufacturing to the storage procedure and finally to the application properties of a protective and decorative film. Therefore, rheological additives do have a high impact on the quality of paints and coatings. Depending on the field of application, demands for rheology profiles vary from Newtonian – constant viscosity when varying shear is applied - to Pseudoplastic or shear thinning behaviour – where viscosity decreases as the shear rate increases.

For waterborne formulations, often a pseudoplastic rheology profile is desired in order to ensure properties like storage stability and the prevention of sedimentation of particles with high density.

The use of rheological additives allows the flow behavior of coatings to be adjusted in a targeted manner and thus obtain effects such as high drag resistance, film thickness, gloss development, leveling and spatter resistance.

Polyurethane thickeners are known to be able to provide a broad variety of rheological profiles together with superior film properties - the TEGO® Viscoplus family of polyurethane thickeners offers a toolbox of products to match various rheological profiles as well as multiple binders or coalescing agents.

In addition to technical requirements, regulatory framework is very important in today’s coatings environment – TEGO® Viscoplus rheology additives allow to formulate with ultra-low VOC & SVOC levels.

You will find more details about the excellent performance on our factsheet: