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:
Jan. 08, 2019
Filed:
Dec. 01, 2016
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Nancy R. Sottos, Champaign, IL (US);
Scott R. White, Champaign, IL (US);
Wenle Li, Urbana, IL (US);
Christopher C. Matthews, Champaign, IL (US);
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
Autonomous detection of damage in a polymer coating is described by utilizing microcapsules in a polymer coating having free and/or residual amines. The microcapsules contain a color indicator, such as 2',7′-dichlorofluorescein (DCF), bromophenol blue (BPB) or fluorescamine, which is reactive with the free and/or residual amines present in the polymer coating. For coatings without the presence of free and/or residual amines, a color indicator microcapsule can be combined with a second type of microcapsule filled with a base. When sufficient damage is inflicted to the coating, the microcapsules in and/or around an area of the damage will rupture, and the color indicator will react with the free and/or residual amines or the base to autonomically indicate the area in which the coating has been damaged.