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:
Sep. 24, 2013
Filed:
Feb. 25, 2009
Eugen Moellmann, Friedberg, DE;
Thomas Heinze, Jena, DE;
Tim Liebert, Jena, DE;
Sarah Koehler, Erfurt, DE;
Eugen Moellmann, Friedberg, DE;
Thomas Heinze, Jena, DE;
Tim Liebert, Jena, DE;
Sarah Koehler, Erfurt, DE;
SE Tylose GmbH & Co. KG, Wiesbaden, DE;
Abstract
The invention is directed to a simple and new method for the homogeneous synthesis of cellulose ethers. Ionic liquids are not only used as solvent, but also as reaction media for the homogeneous etherification of cellulose. The dissolved cellulose is treated with the etherification agent in the absence of organic and/or inorganic bases and in the absence and/or in the presence of moderate amounts of water. The obtained cellulose ethers show new distributions of substitution on the polymer chain, resulting in new properties and applications.