Verfahren zur Herstellung von Cellulosecarbonat

Details

Veröffentlichungs-Nr.

EP3398970

Aktenzeichen

EP18170831

Anmeldetag

4. Mai 2018

Veröffentlichung

12. Februar 2020

Erteilung

12. Februar 2020

Rechtsraum

EP

IPC

C08B5/00C08L1/02

Abstract

According to the present disclosure, a method of synthesizing cellulose carbonate is provided. The method includes mixing a solution comprising dimethyl sulfoxide and cellulose with an organic base in the presence of carbon dioxide to form a cellulose solution comprising cellulose carbonate anions, wherein the organic base is represented by a formula of: wherein each of R 1 , R 2 and R 3 is C 1 -C 20 alkyl; and wherein each of R 4 and R 5 is hydrogen or C 1 -C 20 alkyl. The method also includes contacting the cellulose solution with one or more organochlorides in the presence of carbon dioxide to form the cellulose carbonate, and adding an alcohol or water to precipitate the cellulose carbonate.

Anmelder

Firma

Agency for Science, Technology and Research

Land

🇸🇬 Singapur

Fachgebiete