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:
May. 10, 2016
Filed:
Dec. 21, 2011
John P. O'brien, Oxford, PA (US);
Kathleen Opper, Wilmington, DE (US);
John P. O'Brien, Oxford, PA (US);
Kathleen Opper, Wilmington, DE (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
This invention pertains to a novel processing for preparing fibers from poly(α(1→3)glucan). The fibers prepared according to the invention, have 'cotton-like' properties, are useful in textile applications, and can be produced as continuous filaments on a year-round basis. The process comprises solution spinning a 5-20% solids concentration of poly(α(1→3)glucan) in an aqueous alkali metal hydroxide, in particular NaOH at concentration of 2 to 10 weight-%, and coagulating the spun fiber in an acid coagulation liquid.