Dispersions comprising high surface area nanotubes and discrete carbon nanotubes

US12234368B2 · kind B2 · utility

Assignee

• MOLECULAR REBAR DESIGN, LLC · US

Inventors

• Kurt W. Swogger · Austin, US
• Clive P. Bosnyak · Dripping Springs, US
• Malcolm Finlayson · Solana Beach, US
• Jerry Gazda · Austin, US
• Vinay Bhat · San Diego, US
• Nancy Henderson · Austin, US
• Emily Barton Cole · Houston, US

Key dates

• Filing date: Feb 26, 2021
• Grant date: Feb 25, 2025
• Expiry date: Jul 23, 2043

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/932
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present application pertains to dispersions comprising oxidized, discrete carbon nanotubes and high-surface area carbon nanotubes. The oxidized, discrete carbon nanotubes comprise an interior and exterior surface, each surface comprising an interior surface oxidized species content and an exterior surface oxidized species content. The interior surface oxidized species content differs from the exterior surface oxidized species content by at least 20%, and as high as 100%. The high-surface area nanotubes are generally single-wall nanotubes. The BET surface area of the high-surface area nanotubes is from about 550 m2/g to about 1500 m2/g according to ASTM D6556-16. The aspect ratio is at least about 500 up to about 6000. The dispersions comprise from about 0.1 to about 30% by weight nanotubes based on the total weight of the dispersion.