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:
Dec. 11, 2012
Filed:
Jun. 27, 2008
Yifan Zhang, Woodbury, MN (US);
Yi He, Roseville, MN (US);
Diane R. Wolk, Woodbury, MN (US);
Mark W. Nelson, Lino Lakes, MN (US);
Larry Richard Krepski, St. Paul, MN (US);
Stephen Richard Hartshorn, St. Paul, MN (US);
Douglas Eugene Weiss, St. Paul, MN (US);
Yifan Zhang, Woodbury, MN (US);
Yi He, Roseville, MN (US);
Diane R. Wolk, Woodbury, MN (US);
Mark W. Nelson, Lino Lakes, MN (US);
Larry Richard Krepski, St. Paul, MN (US);
Stephen Richard Hartshorn, St. Paul, MN (US);
Douglas Eugene Weiss, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A functionalized polymer is disclosed that comprises the reaction product of a polymer having one or more pendant reactive functional groups and a color changing indictor having a co-reactive functional group. The co-reactive functional group of the color changing is able to react with the reactive functional group of the polymer to form a covalent bond. Therefore, the color changing indicator is pendant from the polymer. The color changing indicator maintains its ability to produce a visually discernable color change in the presence of an associated stimulus.