Redox polymers for improved dirt and water resistance for elastomeric wall and roof coatings
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United States of America Patent
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Mar 31, 2015
Grant Date -
Sep 18, 2014
app pub date -
Mar 13, 2014
filing date -
Mar 15, 2013
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Abstract
The present invention provides elastomeric roof coatings and aqueous coating compositions of (i) an acrylic emulsion copolymer that comprises (ii) a reductant and has a high molecular weight, (iii) a combination of a hydrophilic polymeric dispersant and a pigment, extender or filler, and (iv) a multivalent transition metal ion or multivalent transition metal ion compound or salt. The composition and coating provide excellent swelling resistance and a balance of tensile and elongation in an acrylic roof coating composition.
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