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:
Mar. 03, 2020
Filed:
May. 13, 2016
3m Innovative Properties Company, St. Paul, MN (US);
Ryan E. Marx, Rosemount, MN (US);
David A. Ylitalo, Stillwater, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Thermally stable microstructured layers comprising polyurethane, polyurea and/or polyurethane/urea semi-IPN materials are provided which have microstructured surfaces which are highly durable, erosion resistant, and thermally stable. The microstructured layer comprises a semi-IPN of a polymer network selected from the group consisting of urethane acrylate polymer networks, urethane/urea acrylate polymer networks and urea acrylate polymer networks and a linear or branched polymer that is a thermoplastic polymer selected from the group consisting of thermoplastic polyurethanes, thermoplastic polyurethane/polyureas, thermoplastic polyureas, and combinations thereof. The microstructures are thermally stable at temperatures above the crossover point of the thermoplastic polymer, despite comprising a majority of such thermoplastic material. In another aspect, the present disclosure provides methods of making microstructured layers according to the present disclosure.