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. 09, 2022
Filed:
Jun. 29, 2018
Dow Global Technologies Llc, Midland, MI (US);
Robert B. Appell, Wilmington, DE (US);
Joseph L Weir, Wilmington, DE (US);
NUTRITION & BIOSCIENCES USA 1, LLC, Rochester, NY (US);
Abstract
A process includes: (a) providing an initial cellulose ether powder containing 0.5 to 10 weight-percent water based on total cellulose ether powder weight; (b) heating the initial cellulose ether powder to a temperature in a range of 30 to 130 degrees Celsius; (c) before, during and/or after heating in step (b), adding solid base to the cellulose ether powder and mixing with the initial cellulose ether powder to form a cellulose ether/base mixture; (d) adding volatile acid to the cellulose ether/base mixture and mixing; and (e) allowing the volatile acid to hydrolyze the initial cellulose ether to form a final cellulose ether having a lower viscosity than the initial cellulose ether.