High Performance Polyol Phosphate Esters (POLYOL)
Coatings to Meet Low VOC Emission Limits
This page finalized April 19, 2006
Chairman’s Air Pollution Seminar Series
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Tuesday, May
9, 2006
10:30 a.m. - 12:00 Noon
Sierra Hearing Room, Second Floor
1001 I Street, Sacramento
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Webcast
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High
Performance Polyol Phosphate Esters (POLYOL)
Coatings to Meet Low VOC Emission Limits
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John Massingill, Ph. D.,
Director, Center for Coatings Science and Technology
Texas State University
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Texas State University has developed a prototype coating
resin using hyperbranched, vegetable oil polyol phosphate esters (POLYOL). The resin can be used to meet reduced
VOC limits applicable to alkyd and other coatings. Innovative features of the new resin are the hyperbranched technology,
combined with water dispersibility, and corrosion resistance via the phosphate ester groups. The hyperbranched
resin allows waterborne and solvent based alkyd paints to achieve conventional performance at unconventionally
low VOC levels. The use of the phosphate ester for dispersion reduces the need for surfactants, and the phosphate
dispersing group reacts with metal substrates to improve adhesion and improve corrosion resistance of the coating.
Under funding from the ARB's ICAT program, John Massingill, of Texas State University organized a demonstration
of the resin technology in container coatings by Precision Coatings in California. Five gallons of black POLYOL
formulation were used to spray paint items on a commercial line. The items were flash dried, baked for about five
minutes, cooled, and removed from the line for observations and testing. The coatings had good flow, good gloss,
good adhesion, and good solvent resistance characteristics. The coatings had some streaking, due to wetting problems
in some areas of the substrate metal. This is correctable by reformulation of the coating. |
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| John Massingill, Ph.D., is currently director of the Center for Coatings Science
and Technology at Texas State University. He received his Ph.D. degree in Organic Chemistry from Texas Christian
University. He worked for 25 years for The Dow Chemical Company. His current research is the area of new alkyd
resins for architectural and industrial coatings. |
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For more information on this
Seminar please contact Kevin Cleary at (916) 323-1505 or send email to: kcleary@arb.ca.gov
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For a complete listing of
the ARB Chairman's Series and the related documentation for each one of the series please check this page
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