Announcement: The organizers of the American Coatings Show and Conference 2020 have announced that this year's event will be virtual due to Covid-19. For show updates visit - https://american-coatings-show.com/virtual/
 

 

Virtual Conference Presentations:

 
Kaliappa Ragunathan Poster

Achieving excellent multi-substrate adhesion for Architectural Coatings

Substantial differences across substrate surface properties make it very difficult for architectural coatings to achieve superior multi-substrate adhesion. This challenge is further complicated by the need to balance adhesion with other important coating properties. BASF’s latest developments on emulsion polymers achieve this challenging goal, delivering a solution that improves the resilience of low-VOC coatings.

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BASF investigated the role that different polymer design factors have on adhesion to identify a solution that will successfully adhere to chalked paint, fresh wood, aluminum, galvanized steel, cold rolled steel, and alkyd paint. This paper explores the impact that hydrophobicity/hydrophilicity balance, molecular weight, particle morphology, and glass transition temperature of aqueous polymer particle dispersion has on multi-substrate adhesion. It also covers specific examples of flat and semi-gloss formulated coatings achieving superior multi-substrate adhesion, while simultaneously delivering overall excellent performance in other key attributes such as dirt pick-up resistance, surfactant leaching, and tannin blocking among others.


 
Nicholas Foley Measuring and Testing I
 

Coating Mechanics to Defend Against Environmental Exposure

Exterior surfaces experience degradative environmental conditions such as intense UV exposure, rain and temperature swings leading to deterioration. Coatings are low cost solutions offering decades of protection, preventing significant repair costs for buildings. The coating must withstand UV, mitigate water damage and express the flexibility required to maintain adhesion to dimensionally unstable substrates (i.e., wood) as they undergo thermal expansion and contraction through the days and seasons.

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BASF has investigated paint film mechanics through accelerated thermal cycling grain crack and tensile testing with intent to correlate the film properties to exterior exposure data. In this paper, we demonstrate that adhesion after accelerated weathering combined with tensile elongation testing can be used to model outdoor weathering.


 
Tony Neely Protective Coatings
 

Acrylic dispersion for improved metal protection

Waterborne technologies are gaining ground, although solventborne or 100% solids technologies remain dominant, for corrosion protection due to increased regulations around VOC emissions. Our latest development emphasizes our commitment and expertise in this field.

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This study demonstrates a high-performance, APEO- and zinc-free binder with improved corrosion protection compared to other 1-component waterborne binders of equivalent dry film thickness. This new resin helps to save formulation cost and complexity by decreasing or eliminating the use of active inhibitors. The versatility of this technology will be showcased by results in a high-gloss direct-to-metal (DTM) coating and primer. By balancing the hydrophobicity and chemical functionality, BASF has developed a resin with low water uptake, good early water and humidity resistance, and excellent corrosion resistance while still allowing for ease of formulation and pigment dispersion. This functionality also allows for superior adhesion to multiple substrates, including plastics.


 
Kyle Flack Water-based coatings
 

Water-based intumescent coatings with dramatically reduced application times

Intumescent coatings provide passive fire protection, most notably to steel structures. The application of water-based intumescent coatings on construction steel can take several days due to the number of coats and total dry film build needed to provide adequate fire protection.

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Industry standard water-based intumescent coatings can also suffer from poor water resistance. This limits their application to indoor spaces or in many instances require a water-resistant topcoat; further increasing the time required to apply. We have developed unique technology for intumescent coatings that can dramatically decrease application times and in many cases preclude the need for a topcoat. This unique technology consists of a dispersion and our proprietary Instant Set Technology which when used together allow for full film build in one application.


 
Kyle Flack Direct-to-metal
 

Acrylic polyol with enhanced performance for 2KPUR direct to metal coatings

Mitigating corrosion continues to be a challenge in protective coatings markets. End users are demanding more corrosion protection with fewer coats. An example would be direct-to-metal topcoats that forgo the use of a primer.

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2K urethane coatings are commonly used in the protective coating markets either as primers, topcoats or direct-to-metal topcoats. These urethane coatings inherently suffer from poor corrosion protection and adhesion when applied directly to metal substrates such as cold-rolled steel, aluminum, and galvanized steel. We have developed a unique acrylic polyol suitable for low VOC solvent based direct-to-metal 2K urethane coatings. The new resin provides low VOC capability, long pot life, good dry and wet adhesion to various metal substrates, good corrosion resistance as measured in salt spray and good UV durability which is a key requirement fo


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