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:
Jan. 12, 2021
Filed:
Oct. 08, 2014
Applicant:
Solvay Acetow Gmbh, Freiburg, DE;
Inventors:
Andreas Hummel, Freiburg, DE;
Hans-Juergen Ehret, Freiburg, DE;
Assignee:
SOLVAY ACETOW GmbH, Freiburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B 3/06 (2006.01); C08B 31/04 (2006.01); C08B 37/00 (2006.01); C02F 1/44 (2006.01); C07C 51/487 (2006.01); C08B 3/28 (2006.01); C02F 101/30 (2006.01); C02F 103/28 (2006.01);
U.S. Cl.
CPC ...
C08B 3/06 (2013.01); C02F 1/44 (2013.01); C07C 51/487 (2013.01); C08B 3/28 (2013.01); C08B 31/04 (2013.01); C08B 37/00 (2013.01); C02F 2101/30 (2013.01); C02F 2103/28 (2013.01);
Abstract
The invention concerns a process for the manufacture of an acylated polysaccharide which comprises. (a) reacting a polysaccharide with an acylating agent to produce an acylated polysaccharide and (b) washing the acylated polysaccharide with water containing from 0.05 to 15 mg/l Ca-ions (c) recovering the washed acylated polysaccharide and an aqueous phase containing carboxylic acid from step (b).