Paint & Coatings Industry - May 2008 - (Page 78)

New Coating Technology Expands Vinyl Building Solar Reflective Coatings Prevent Warping of Vinyl S ince the mid-1990s, composite materials have made substantial inroads across the building products industry in the manufacture of windows, doors, trim and siding. The unprecedented strength and resilience of these materials, and their low maintenance, has made them too good to ignore. They also offer another advantage important in today’s building industry: “green” appeal. While they are produced using petrochemicals, composites may be comprised of recycled materials and, therefore, reduce the harvesting of lumber. One example of the success of composites is in the trim marketplace. Over the past decade, cellular PVC trim boards have emerged to displace wood and capture 10% market share, according to a recent article in Plastics Technology. The article quotes a 2006 study from Principia Partners predicting 13% annual growth for PVC trim board through 2010. The vinyl siding market – which comprises 40% of the market for exterior siding – is evolving as well. New product technologies are entering the siding market. Pre-finished, cellular PVC siding is emerging as an alternative to fiber cement siding for customers who want a higher-end, more “wood-like” siding appearance. While cellular PVC siding has been available in the U.K. for 30 years, it just debuted commercially in the United States this year. A coatings breakthrough has played a significant role in making commercialization of cellular PVC siding possible. Siding with PVC Fiber cement, or prefinished siding made from cellulosic composite and polymeric materials, makes it possible to marry the ease of maintenance pioneered by vinyl and aluminum sidings with the look of wood lap, shake and clapboard sidings. Production involves the use of non-cellulosic materials including Portland cement or polymers blended with cellulosic fibers to yield durable products that are less expensive than solid wood or injectionmolded polypropylene siding. The cellulosic materials incorporated into these composites with a high-quality finish must be protected. Primer/sealers are applied to help minimize moisture penetration and prepare the surface so the siding is ready for topcoat application in the field. Typically, cellulosic composite siding materials are coated with waterborne primer/topcoat systems. These force-dried, self-crosslinking coatings offer durability and block resistance to maintain finish appearance through years of service. High-quality finishes are a major factor in the growth in popularity of this segment of the siding market. New Market Entrant Siding milled from an extruded cellular PVC polymer is emerging as a new alternative to fiber cement and cedar lap siding. While it captures the aesthetics associated with authentic cedar lap, cellular PVC can be factory-finished and is virtually mainBy Gale Murphy, Chuck Susnis and Mark Miles | The Sherwin-Williams Company, Cleveland, OH 78 MAY 2008 | W W W . P C I M A G . C O M http://WWW.PCIMAG.COM

Table of Contents Feed for the Digital Edition of Paint & Coatings Industry - May 2008

Paint & Coatings Industry - May 2008 Contents Viewpoint Industry News Calendar of Events Company News Mergers and Acquisitions Names in the News Charlotte Dining Guide Exhibits-in-Print Waterborne Alkyds Break Through the Performance Barrier New Matting Agents for Waterborne Coatings and Varnishes Silicon-Based Technology for the Coatings Industry High-Performance Microgrinding The Development of New SMA Esters as Pigment Dispersants for Waterborne Coatings and Inks The Right Choice New Coating Technology Expands Color Choices for Vinyl Building Products BioPreferred Federal Biobased Products-Preferred Procurement Program European Union's REACH Regulation Sustainability - The New Nano Improved Dirt Pickup Resistance Critical to Future Coating Innovation NanoNews Protective Coatings NDT - Energy-Saving Paint Static Electricity - The Hidden Danger in Hazardous Areas Wacker Chemie - A Profile of Success Materials Watch Products and Literature Classifieds Advertiser Index

Paint & Coatings Industry - May 2008

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