The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2015
Filed:
Mar. 13, 2014
Applicant:
Rohm and Haas Company, Philadelphia, PA (US);
Inventors:
Joseph M. Rokowski, Barto, PA (US);
Mark D. Westmeyer, Collegeville, PA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 133/02 (2006.01); C09D 133/04 (2006.01); C09D 133/12 (2006.01); C08K 3/24 (2006.01);
U.S. Cl.
CPC ...
C09D 133/12 (2013.01); C08K 3/24 (2013.01); C09D 133/02 (2013.01); C08L 2201/54 (2013.01);
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.