Nanostructured article

US12103846B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• David Scott Thompson · Lake Elmo, US
• Chad M. Amb · Roberts, US
• Moses M. David · Woodbury, US
• Richard J. Pokorny · Maplewood, US
• Thomas P. Klun · Lakeland, US
• Jonah Shaver · Okabena, US
• Joan M. Noyola · Maplewood, US
• Hannah E. Walsh · Woodbury, US
• Jon P. Nietfeld · Woodbury, US
• John A. Wheatley · Stillwater, US
• Joseph D. Rule · Woodbury, US
• Ryan M. Braun · Windom, US
• Michael A. Johnson · Stillwater, US

Key dates

• Filing date: May 4, 2020
• Grant date: Oct 1, 2024
• Expiry date: May 25, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/00
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

A nanostructured article includes a substrate; a plurality of first nanostructures disposed on, and extending away from, the substrate; and a covalently crosslinked fluorinated polymeric layer disposed on the plurality of first nanostructures. The plurality of first nanostructures includes polyurethane. The polymeric layer at least partially fills spaces between the first nanostructures to an average minimum height above the substrate of at least 30 nm such that the polymeric layer has a nanostructured surface defined by, and facing away from, the plurality of first nanostructures.