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:
Feb. 23, 2016
Filed:
Dec. 12, 2008
Audrey A. Sherman, St. Paul, MN (US);
Wendi J. Winkler, Minneapolis, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
Robert J. Reuter, Woodbury, MN (US);
James P. Dizio, St. Paul, MN (US);
Audrey A. Sherman, St. Paul, MN (US);
Wendi J. Winkler, Minneapolis, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
Robert J. Reuter, Woodbury, MN (US);
James P. DiZio, St. Paul, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Non-silicone urea-based adhesives are disclosed which are prepared by the polymerization of reactive oligomers with the general formula X—B—X, where X is an ethylenically unsaturated group and B is a unit free of silicone and containing urea groups. The reactive oligomers can be prepared from polyamines through chain extension reactions using diaryl carbonates followed by capping reactions. Adhesive articles, including optical adhesive articles may be prepared using the disclosed non-silicone urea-based adhesives.