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:
Jun. 18, 2019
Filed:
Oct. 23, 2015
National University Corporation Kanazawa University, Kanazawa-shi, Ishikawa, JP;
Kanazawa Institute of Technology, Nonoichi-shi, Ishikawa, JP;
Ryohei Kakuchi, Kanazawa, JP;
Kazuaki Ninomiya, Kanazawa, JP;
Yoshiki Shibata, Kanazawa, JP;
Kiyoshi Uzawa, Nonoichi, JP;
Tomoki Ogoshi, Kanazawa, JP;
Katsuhiro Maeda, Kanazawa, JP;
Tomoyuki Ikai, Kanazawa, JP;
Kenji Takahashi, Kanazawa, JP;
NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY, Kanazawa-Shi, Ishikawa, JP;
KANAZAWA INSTITUTE OF TECHNOLOGY, Nonoichi-Shi, Ishikawa, JP;
Abstract
An object is to provide a method for producing a polysaccharide derivative without using a catalyst, a cocatalyst, or an active compound by esterification, etherification, or the like, from a polysaccharide such as cellulose as a source material, while maintaining a high molecular weight. Another object is to provide a method for producing a cellulose derivative in a separated condition directly from biomass containing lignocellulose. A method for producing a polysaccharide derivative of the present invention is characterized in that a reaction is carried out in a mixture comprising: a source material comprising a polysaccharide; an ionic liquid for which the pKa of a conjugate acid of an anion in DMSO is 12 to 19 and which is capable of producing a carbene; and a chain or cyclic ester compound or an epoxy compound. Preferably as a source material containing a polysaccharide, a biomass source material containing lignocellulose is used.