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:
Apr. 04, 2017
Filed:
Jan. 22, 2016
Fpinnovations, Pointe-Claire, CA;
Alois Vanerek, Montreal, CA;
Jessica Carette, Salaberry-de-Valleyfield, CA;
Zohreh Sabzalian, Montreal, CA;
Theo Van De Ven, Montreal, CA;
Md Nur Alam, Thunder Bay, CA;
FPINNOVATIONS, St-Jean, Pointe-Claire, Quebec, CA;
Abstract
The invention relates to novel absorbent fibres/filaments from low-substituted carboxymethyl cellulose and the method of producing same. The filaments are produced by wet spinning, wherein the spinning dope is entirely comprised of low-substituted carboxymethyl cellulose dissolved in sodium hydroxide. The resulting CMC filaments have degree of substitution ranging from 0.10-0.35 and degree of polymerization ranging from 250-650 with the CMC uniformly distributed throughout the filament. The absorbency in deionized water and saline (0.9% NaCl) solution is 120 g/g and 30 g/g, respectively. The retention of deionized water and saline (0.9% NaCl) solution within the fibres is 48 g/g and 25 g/g, respectively.