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:
Oct. 22, 2024
Filed:
May. 13, 2020
3m Innovative Properties Company, St. Paul, MN (US);
John C. Clark, Lake Elmo, MN (US);
John P. Baetzold, North St. Paul, MN (US);
Charlie C. Ho, Woodbury, MN (US);
Alexander J. Kugel, Woodbury, MN (US);
Yongshang Lu, Woodbury, MN (US);
Chris A. Pommer, Woodbury, MN (US);
Jay M. Jennen, Forest Lake, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Described herein is a multilayered article () and methods of making and using such articles. The multilayered article () comprises: ⋅(a) a microsphere layer () comprising a plurality of microspheres disposed in a monolayer; ⋅(b) a bead bonding layer () comprising a first major surface and a second opposing major surface and the plurality of microspheres is partially embedded in the first major surface of the bead bonding layer, and comprises a thermoset polyurethane having a glass transition temperature of at least 35° C.; ⋅(c) a primer layer () disposed on the second major surface of the bead bonding layer wherein the primer layer comprises a copolymer of polyurea and polyurethane and wherein the primer layer is covalently attached to the bead bonding layer via urea linkages; and ⋅(d) an elastomeric layer () disposed on the primer layer opposite the bead bonding layer, wherein the elastomeric layer comprises a polyurethane thermoplastic elastomer.