Paint & Coatings Industry - May 2008 - (Page 44)

Waterborne Alkyds Break Through the Performance Barrier FIGURE 9 | Versatility of gloss ratings and PVC. Properties Density (lb/gal) Weight % Solids Vol. % Solids Pigment/Binder Ratio PVC VOC (lb/gal) VOC (g/l) tack-free, dry hard and dry-through), Beckosol AQ showed significantly shorter drying times. 40 PVC2 11.59 59 43 1.95 40% 0.10 11.7 35 PVC 11.21 56 41 1.61 35% 0.13 15.7 40 PVC1 11.59 59 43 1.95 40% 0.10 11.7 50 PVC 12.37 65 47 2.74 50% 0.10 12.1 60 PVC 13.27 70 52 3.86 60% 0.08 9.9 Non-Yellowing in Clear Varnish Formulations Beckosol AQ formulations using both long and medium oil alkyd latex resins demonstrated superior resistance to yellowing, at 7 and 14 days, and with elevated temperatures (150 °C) and prolonged exposure to UV light sources, as shown in Figure 7. Weathering Preliminary weatherability analysis indicates that Beckosol AQ alkyd latex resins offer superior weatherability on high tannin wood surfaces (cedar), as shown in Figure 8. FIGURE 10 | Versatility of gloss ratings and PVC. 35PVC 20 Degree Gloss 60 Degree Gloss 85 Degree Gloss L* a* b* Reflectance 17.7 58.1 80.1 94.56 -1.52 4.23 86.68 40PVC1 4 25.8 43.3 94.23 -1.39 4.26 85.78 40PVC2 3.1 17.3 20.6 94.03 -1.45 4.72 85.23 50PVC 1.4 4.7 2.7 94.12 -1.32 4.17 85.51 60PVC 1.2 2.1 1.2 93.78 -1.42 4.73 84.70 Full Range of Gloss Ratings, PVC Possible Beckosol AQ alkyd latex resins enable a broad range of pigment volume concentration (35% to 60%), as shown in Figure 9; and a full range of gloss ratings (20 degree, 60 degree and 80 degree), while maintaining VOC levels below 16g/L (Figure 10). Superior Block Resistance In a semi-gloss formulation, both long oil (Beckosol 100) and medium oil (Beckosol 200) alkyd latex resins provide superior block resistance when evaluated against commercially available low-VOC paints. The comparison is especially dramatic for the 30-minute/120 °F block test, as shown in Figure 11. FIGURE 11 | Block resistance of semi-gloss formulations. Adhesion In a test of adhesion to weathered, chalky latex surfaces, the Beckosol AQ alkyd latex resins (in gloss, semi-gloss and flat formulations) exhibited much better adhesion ratings when compared to both stainblocking and all-purpose water-borne primers, as shown in Figure 12. Conclusion The introduction of Beckosol AQ alkyd latex resin technology combines the performance advantages of alkyd-based paint chemistries with the convenience of solvent-free, waterborne coatings, with near-zero VOC content. Coatings manufacturers are no longer forced to trade performance and durability for the low-VOC levels needed to meet ever-tightening regulatory standards. By selecting Beckosol AQ as the primary resin for near-zero VOC coatings, manufacturers can eliminate the expense of reformulation to meet these new VOC requirements, as well as VOC exceedance fees. For more information, visit www.reichhold.com. FIGURE 12 | Adhesion characteristics of Beckosol AQ. 31 PVC, Gloss AQ 200 1 Day Dry 1 Day Wet 7 Day Dry 7 Day Wet 5B 5B 5B 5B 35 PVC, Semi-Gloss AQ 200 5B 5B 5B 5B 50 PVC, Commercial Commercial Flat AQ Stain-Blocking All-Purpose 200 WB Primer WB Primer 5B 5B 5B 5B 0B 0B 0B 0B 1B 0B 1B 0B 44 MAY 2008 | W W W . P C I M A G . C O M http://www.reichhold.com 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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