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:
Nov. 03, 2015
Filed:
Aug. 13, 2009
T. Howard Killilea, North Oaks, MN (US);
Michael C. Wildman, Hoffman Estates, IL (US);
Bruce A. Johnson, Crystal Lake, IL (US);
Carl H. Weber, Cary, IL (US);
T. Howard Killilea, North Oaks, MN (US);
Michael C. Wildman, Hoffman Estates, IL (US);
Bruce A. Johnson, Crystal Lake, IL (US);
Carl H. Weber, Cary, IL (US);
Valspar Sourcing, Inc., Minneapolis, MN (US);
Abstract
Coating compositions for cementitious substrates may be made from a multistage latex polymer; silane; and a water-soluble acid, acid anhydride or acid salt capable of etching or otherwise reacting with the surface of the substrate to provide improved coating adhesion. The silane may be present as a silane coupling agent distinct from the multistage latex polymer, or may be present as silane functionality on the multistage latex polymer. The coating compositions adhere well to cementitious substrates and have a self-etching capability which improves coating adhesion, especially near edges and corners.