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:
Dec. 10, 2019
Filed:
Sep. 25, 2017
Lakehead University, Thunder Bay, CA;
Lew Christopher, Thunder Bay, CA;
MD Nur Alam, Thunder Bay, CA;
LAKEHEAD UNIVERSITY, Thunder Bay, Ontario, CA;
Abstract
We have developed an environmentally-friendly new process for producing textile yarns. The process involves chemical modification of cellulose with subsequent dissolution of the chemically modified cellulose with chitosan or other amine group-containing compounds which yields a highly viscous gel. The chemical modification of cellulose employs a known process of periodate oxidation which we have modified to obtain fibers with a low degree of aldehyde groups (˜2 mmol/g cellulose) that still remain insoluble in water. After washing, the chemically modified fibers can be cross-linked with chitosan or other amine group-containing compounds to produce the viscous gel. The viscous gel can then be extruded through a syringe nozzle in the form of textile yarns.