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:
Mar. 24, 2015
Filed:
Mar. 14, 2013
Celanese International Corporation, Irving, TX (US);
Rongfu Li, Blacksburg, VA (US);
Jay Mehta, Blacksburg, VA (US);
Xiaoyan Tu, Blacksburg, VA (US);
Prabuddha Bansal, Blacksburg, VA (US);
Michael Combs, Shady Spring, WV (US);
Denis Fallon, Blacksburg, VA (US);
Lawton E Kizer, Blacksburg, VA (US);
Celanese International Corporation, Irving, TX (US);
Abstract
A method for treating a cellulosic material comprising extracting the cellulosic material with an extractant to selectively extract hemicellulose therein and separating the extracted hemicellulose to form a cellulosic product comprising less hemicellulose than the cellulosic material. The extractant comprises an amine oxide and a non-solvent. The cellulosic product retains the cellulosic fiber morphology.