PPG Celebrates Anniversary of PVDF Coatings

PPG has announced that it is celebrating the 50th anniversary of DURANAR coatings throughout 2017, commemorating the introduction in 1967 of the polyvinylidene fluoride (PVDF) coatings for metal building components.

Over the past half-century, Duranar coatings have been specified by architects to protect and enhance architectural landmarks, such as the Empire State Building in New York, the Louvre Pyramid in Paris, Shanghai World Financial Center in China, Petronas Towers in Kuala Lumpur, Malaysia, and the Rock and Roll Hall of Fame in Cleveland.

PPG has refined Duranar coatings since its introduction to meet evolving aesthetic, performance and sustainability demands of architects and building owners. Advances have included adding metallic flakes and other effects for appearance options; incorporating ULTRA-COOL infrared-reflective pigments to help reduce building-cooling loads; and formulating Duranar powder coatings, which earned PPG a R&D 100 Award recognizing the coatings’ ability to reduce volatile organic compound (VOC) emissions and economize production of custom-colored powder coatings.

Brian Knapp, PPG director, coil and building products, said Duranar coatings have been popular with architects and building owners for their blend of aesthetics, reliability and performance. “Duranar coatings can be formulated to provide a range of colors and effects, giving architects an unlimited design palette,” he says. “They also feature a chemistry developed and refined by PPG that has delivered decades of color retention and chalk and chemical resistance, even in seacoast and industrial environments.”

Duranar coatings are formulated with PPG resins and pigments in combination with standard KYNAR 500 or HYLAR 5000 PVDF resins. In fact, PPG helped popularize and improve PVDF coatings technology by licensing Kynar 500 resin, which was originally commercialized by Pennwalt Corp. in the mid-1960s. PPG remains the original and continuous licensee of this PVDF resin, which has become an industry standard.

PPG’s formulation for Duranar coatings creates molecular bonds that render the material almost impervious to the effects of continuous ultraviolet (UV) exposure, as well as other environmental and atmospheric hazards such as salt air, humidity, high temperatures and acid rain. In fact, many of the original trial panels coated with Duranar products PPG developed 50 years ago are still enduring exposure testing in South Florida.

As part of the anniversary celebration, PPG will highlight Duranar coatings in trade-show displays throughout the year, offering customer promotions and giveaways. PPG also will introduce a web portal featuring images and descriptions of buildings finished with Duranar coatings, as well as articles, white papers and other educational materials.

To learn more about the 50th anniversary of Duranar coatings, visit here or call (800) 258-6398.

Coating System Makes Roofing and Cladding Appear Aged, Weathered

McElroy Metal's Cor-Ten AZP Raw offers the look of aged or weathered roofing and cladding.

McElroy Metal’s Cor-Ten AZP Raw offers the look of aged or weathered roofing and cladding.

Bossier City, La.-based McElroy Metal’s Cor-Ten AZP Raw is new to the company’s product line, offering the look of aged or weathered roofing and cladding.

Cor-Ten AZP Raw is a fluoropolymer coating system that uses cool pigment technology that McElroy Metal applies over Galvalume-coated steel sheet. It’s available in a variety of McElroy Metal standing-seam and through-fastened panel profiles. The look of aged or weathered roofing and wall cladding is growing in popularity and used in commercial, residential and industrial applications. Cor-Ten AZP Raw provides the appearance of rusted metal with the advantages of a highly reflective PVDF coating.

Cor-Ten AZP Raw is a fluoropolymer coating system that McElroy Metal applies over Galvalume-coated steel sheet.

Cor-Ten AZP Raw is a fluoropolymer coating system that McElroy Metal applies over Galvalume-coated steel sheet.


“We’re offering the appearance of weathered steel without having to wait for time and Mother Nature,” says Ken Gieseke, vice president of Marketing at McElroy Metal. “As soon as it’s installed, the weathered aesthetic is evident, attractive and durable. It’s sure to become a popular choice of architects and building owners seeking the look of weathered steel.”

In 2005, U.S. Steel introduced Cor-Ten AZP prepainted steel sheet to provide architects, building owners and homeowners with an enhanced performance product to its Cor-Ten steel. McElroy Metal offers the moderately weathered Cor-Ten AZP Raw, a carefully crafted and engineered system to provide any roofing or cladding project with the authentic look of timelessness.

Raw is produced by McElroy Metal in collaboration with Valspar and U.S. Steel.

To learn more, visit here or call (318) 747-8000.

PHOTOS: McElroy Metal

Arkema Inc. Provides Guidelines to Estimate Topcoat Color Fade

Arkema Inc. presented recommended guidelines for estimating the color fade of PVDF-based topcoats for bright color architectural restoration and protective coating applications at the SSPC 2017 Conference in Tampa, Fla.

This year’s SSPC Conference served as an international forum at which contractors, consultants, inspectors, engineers, paint/equipment manufacturers and structure/facility owners exchanged research and technologies in the coatings industry. The event’s GreenCOAT technical program emphasized innovations, the latest advances in eco-conscious coating technology and developments for complying with green regulations.

Many common topcoat standards used for architectural and protective coating applications include a durability requirement based on the accelerated weathering performance of a white coating. However, there are currently no standards for field-applied coatings that address the needs of specifiers who want to ensure color performance in high-chroma (saturated or bright) colors.
 
Dr. Kurt Wood, a principal scientist in Arkema’s Fluoropolymers R&D Division, reviewed data for coatings made using a range of pigment chemistries, enabling estimates of color lifetime to be made for virtually any color, if one stays within the particular resin chemistry space. These principles were demonstrated with PVDF-based topcoats, where it was found that both the pigment grades and the resin are important factors for determining the color lifetime, along with the pigment volume concentration.   

Metal Panels Include Polyiso Core

Green Span Profiles has added RidgeLine, a patented 2 3/8-inch-tall mechanically seamed roofing panel, covering 42 inches, with thickness options of 2 1/2, 3, 4 and 5 inches.

Green Span Profiles has added RidgeLine, a patented 2 3/8-inch-tall mechanically seamed roofing panel, covering 42 inches, with thickness options of 2 1/2, 3, 4 and 5 inches.

Green Span Profiles has added RidgeLine, a patented 2 3/8-inch-tall mechanically seamed roofing panel, covering 42 inches, with thickness options of 2 1/2, 3, 4 and 5 inches. The core is a continuously poured-in-place, polyisocyanurate insulating foam. Exterior and interior metal panels are available in 26-, 24- and 22-gauge Galvalume/G90 galvanized and stainless steel. The exterior finish is standard gloss PVDF coating. RidgeLine panels can be used on slopes as low as 1/2:12 and are available in standard lengths, measuring 12 to 53 feet, with custom lengths available on demand. The panel offers nominal R-8 per inch of insulation thickness; R-20 for the 2 1/2-inch panel.

Max Chemical Becomes Trademark Licensee of Kynar Aquatec

Arkema Inc. has announced that Max Chemical Inc. is now a trademark licensee of Kynar Aquatec high-performance coating technology in North America. Max Chemical uses Kynar Aquatec PVDF latex as the basis for its Crossco MaxWhite ultra-durable roof coating product.

“Max Chemical has been providing quality products to builders, developers, contractors and hardware stores in Puerto Rico and the Caribbean for more than 30 years and we are delighted to welcome them to our family of Kynar Aquatec PVDF licensees,” said James Feorino, global market manager at Arkema. “Our licensing program provides a growth platform for strong regional roof coatings brands, such as Crossco MaxWhite, by capitalizing on the performance-enhancing benefits of our advanced emulsion technology.”

Kynar Aquatec high performance coating technology is an innovative platform of emulsions that enable formulators to produce ultra-durable water-based coatings with low VOC levels below 100 grams/liter. Coatings formulated with these emulsions provide the durability and performance of traditional Kynar 500 resin-based coatings and can easily be applied to a variety of substrates. Given their low-VOC waterborne character, excellent weatherability and ability to be formulated with IR reflective pigments for lasting building efficiency, the Kynar Aquatec emulsions offer sustainable coating solutions for a wide variety of building requirements.

“We are pleased to become an official licensee of the Kynar Aquatec PVDF emulsion for our Crossco MaxWhite roof coating as we are always striving to embrace innovative technology to differentiate our products,” said Ignacio Cotto, technical director at Max Chemical. “This agreement gives us important advantages in terms of material, supply and support, and we will be able to provide our customers with a sustainable, long-life roof coating with outstanding durability, low maintenance and high thermal reflectivity.”

Designed for application as a protective topcoat, Crossco MaxWhite coating formulated with Kynar Aquatec PVDF provides exceptional performance in thermal reflectivity, color stability and weather resistance over new or existing roof surfaces. This innovative coating product exhibits strong adhesive characteristics and dries to a tough, durable finish that withstands years of wind, rain, dust and heat exposure. Crossco MaxWhite is available through Pro-Seal Distributors in Puerto Rico and through CTI Imports Inc. in Florida.