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:
Oct. 18, 2016
Filed:
Nov. 16, 2012
Applicant:
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
Inventors:
Min Ju Song, Ulsan, KR;
Byoung Hee Son, Ulsan, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 13/00 (2006.01); C08B 11/08 (2006.01); C08B 3/06 (2006.01); C08B 11/02 (2006.01); C08B 11/20 (2006.01); C08L 1/32 (2006.01);
U.S. Cl.
CPC ...
C08B 13/00 (2013.01); C08B 3/06 (2013.01); C08B 11/02 (2013.01); C08B 11/08 (2013.01); C08B 11/20 (2013.01); C08L 1/32 (2013.01);
Abstract
Disclosed are a method of preparing acetylated cellulose ether, and acetylated cellulose ether prepared thereby. Here, the disclosed method of preparing the acetylated cellulose ether includes dissolving acetylated cellulose ether in an organic solvent to obtain a mixture comprising a solution of the acetylated cellulose ether; removing an insoluble component that is insoluble in the organic solvent from the mixture; and adding the mixture to water to precipitate the acetylated cellulose ether. The acetylated cellulose ether prepared thereby has a turbidity of less than 40 formazin turbidity units (FTU).