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:
Aug. 31, 2021
Filed:
Feb. 25, 2019
Gp Cellulose Gmbh, Zug, CH;
Arthur J. Nonni, Peachtree City, GA (US);
Charles E. Courchene, Snellville, GA (US);
Harry R. Bartges, Collierville, TN (US);
James M. Keough, Germantown, TN (US);
William A. Howell, Mayo, FL (US);
Jeremy M. Carter, Tallahassee, FL (US);
Blair R. Carter, Marietta, GA (US);
Christopher M. Slone, Memphis, TN (US);
Philip A. Powers, Perry, FL (US);
Steven T. Haywood, Tallahassee, FL (US);
GP Cellulose GMBH, Zug, CH;
Abstract
This disclosure relates to methods of making novel dissolving wood pulps by processes comprising acid prehydrolysis, pulping, and a multi-stage bleaching process comprising oxidation with a catalyst and peroxide under acidic conditions, as well as to products made therefrom having a combination of medium-purity, low viscosity, and improved reactivity, filterability, and/or clogging that can be used as a substitute for traditional high-purity dissolving pulps in a wide variety of applications.