BASF Presents: The Art of Coatings

Novel Ultraviolet Light Absorber and Hindered Amine Light Stabilizer Blend for the Light Stabilization of Coatings

Date: Tuesday, April 5
Time: 5:00-6:30 PM EST
Session ID: Poster

This paper will discuss a novel blend of an ultraviolet light absorber and hindered amine light stabilizer that can be utilized in automotive and industrial coatings to provide excellent weathering performance. Our customers needed a light stabilizer blend with excellent weathering and low viscosity for ease of use, while also improving color and storage stability of the formulation prior to use. The synergistic combination of the UVA and non-interacting HALS protects against coating surface defects while also bolstering color and gloss retention in coating applications. The UV absorbance of the UVA-based blend provides suitability in a wide range of coatings on various substrates. The blend provides low color generation when exposed to high baking temperatures and/or extreme environmental conditions. The non-interacting HALS is especially suitable for oxidative curing and acid-catalyzed systems. The non-basic character of the HALS prevents potential interactions with acidic paint ingredients such as catalysts, biocides, and pigments.

Alternatives to Fluorosurfactants for Waterbased Floor Care Coatings

Available On-demand (originally presented April 6, 2022)

There is increased regulatory pressure in the floorcare coating market regarding the use of fluorosurfactants due to concerns about persistency and health effects of these chemicals. Fluorosurfactants provide a variety of beneficial properties in coatings, coupled with efficiency in use. Specifically, for floorcare, fluorosurfactants enable wetting of low energy tile substrates while providing excellent flow and leveling performance for smooth surface appearance. BASF conducted research to examine various candidate chemistries as potential functional alternatives to fluorosurfactants. This paper reviews this research, demonstrating that alternate chemistries have comparable wetting and flow and leveling performance in floorcare coatings, relative to a benchmark fluorosurfactant. Selection of surfactant candidates, application testing, and performance optimization will be covered. This work demonstrates the possibility of replacement of fluorosurfactants for health and safety concerns.

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DFT vs VOC and Their Impact on Performance in Waterborne DTM Coatings

Available On-demand (originally presented April 6, 2022)

Tighter environmental regulations continue to drive the adoption of waterborne industrial protective coatings, yet increased sophistication is needed with these applications. Two trends with the greatest impact on performance are 1) the reduction in the number of coats and/or total dry film thickness (DFT) (being driven by the customer); and 2) the reduction in the volatile organic content (VOC) of the coating (being driven by increased regulation). Our study demonstrates the importance and balance of these two parameters for final film performance while showcasing formulation optimization and use of testing methods beyond the traditional ASTM B117 for screening resin performance. Lastly, we will highlight this balance of properties using a new prototype of direct to metal (DTM) resin for coatings at 50 g/L or less, demonstrating just how effective waterborne protective coatings can be even while meeting the most stringent VOC requirements.

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Formulation for High Gloss Latex and Comparison of Lab and Real-world Performance

Available On-demand (originally presented April 6, 2022)

It is common in the U.S. market that high gloss paints must be both interior and exterior capable. A latex designed for low VOC high gloss paint application must overcome performance challenges like tackiness due to the polymer-rich nature of the formulation, as well as balance other performance needs such as good durability. Current raw material shortages require input selections to be robust performers and capable of broad formulation, such as multiple sheen and bases or interior and exterior applications. In this paper, we investigate a newly developed high gloss latex in different formulations. The correlation and deviation between lab data and real-world performance for high gloss paints in a variety of interior and exterior applications is discussed.

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Sustainable and High Performance: New Bio-Based Acrylic Dispersion to Prevent Knot Staining for Wood Coatings

Consistent with sustainability targets for the broader coatings industry, major furniture manufacturers have begun to set standards for coatings suppliers to, for example, achieve up to 40% renewable content by 2030. In addition, there’s a known performance challenge for coatings used on softwood in these applications – knot staining – where the surface appears discolored at the knot due to high extractive concentration.

This paper introduces a novel, anionic stabilized, 1-component acrylic dispersion which addresses both technical challenges seamlessly. It contains 20% renewable (14C) content and features excellent knot staining resistance, which makes it a great option for wood furniture primers. Other performance features, like hardness, adhesion, and block resistance will be explored, and the paper will be supplemented with formulation studies to showcase how incorporating certain fillers can further reduce knot staining. To provide context, this paper will touch on best practices in measuring sustainability and progress towards a greener future.

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Formulation Latitude with Solventborne DTM Acrylic Polyol: From Monocoat to Primer

Available On-demand (originally presented April 7, 2022)

Corrosion protection is a top performance requirement in the protective coatings market. 2K urethane coatings are commonly used in this market as primers or topcoats, but end users are increasingly demanding more corrosion protection with fewer coats. The work done in this study demonstrates the versatility of a recently developed solventborne acrylic direct-to-metal ("DTM") polyol to provide excellent performance in DTM, primer, or topcoat layers, allowing end users to simplify portfolios across multiple applications. This study shows how the DTM polyol compares with competitive resins across multiple performance categories, including dry time, hardness, and scratch resistance, and in various coating layers, from primer to clearcoat. This reveals the durability and flexibility of the polyol to achieve results on par or better than competitive primer and topcoat offerings.

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