Patent · US Active

Method for polymer removal from single-walled carbon nanotubes

US10640381B2 · kind B2 · utility

0Cited by

4References

17Claims

0Family size

Assignee

National Research Council of Canada · CA

Inventors

Jianfu Ding · Ottawa, CA
Zhao Li · Mississauga, CA
Patrick Roland Lucien Malenfant · Ottawa, CA

Key dates

Filing date	Jun 9, 2017
Grant date	May 5, 2020
Priority date	—
Expiry date	Dec 21, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D213/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Processes for selectively dispersing semi-conducting single-walled carbon nanotubes (sc-SWCNTs) in a solvent. One process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, in which the amine partially displaces the conjugate polymer associated with the sc-SWNTs dispersed in the solvent. Another process comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs, with the proviso that the amine excludes EDTA. Also, a process for displacement of a conjugated polymer from the surface of semi-conducting single-walled carbon nanotubes (sc-SWCNTs) dispersed in a solvent, which comprises adding an amine either: to a conjugated polymer extraction process (CPE) of the sc-SWCNTs; or after the CPE of the sc-SWCNTs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.