Low defect nanotube application solutions and fabrics and methods for making same

US9650732B2 · kind B2 · utility

Assignee

• Nantero, Inc. · US

Inventors

• J. Thomas Kocab · Fresno Street, US
• Thomas R. Bengtson · Derry, US
• Sanjin Hosic · Malden, US
• Rahul Sen · Lexington, US
• Billy Smith · Woburn, US
• David A. Roberts · Woburn, US
• Peter W. Sites · Knoxville, US

Key dates

• Filing date: Apr 30, 2014
• Grant date: May 16, 2017
• Expiry date: Apr 30, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/60
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present disclosure provides methods for removing defects nanotube application solutions and providing low defect, highly uniform nanotube fabrics. In one aspect, a degassing process is performed on a suspension of nanotubes to remove air bubbles present in the solution. In another aspect, a continuous flow centrifugation (CFC) process is used to remove small scale defects from the solution. In another aspect, a depth filter is used to remove large scale defects from the solution. According to the present disclosure, these three methods can be used alone or combined to realize a low defect nanotube application solutions and fabrics.