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Preparation of tri‐ O ‐substituted cellulose ethers by the use of a nonaqueous cellulose solvent
Author(s) -
Isogai Akira,
Ishizu Atsushi,
Nakano Junzo
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070291220
Subject(s) - cellulose , diethylamine , sodium hydroxide , solvent , chemistry , organic chemistry , base (topology) , polymer chemistry , mathematical analysis , mathematics
The previously reported method for the preparation of tri‐ O ‐benzylcellulose was applied to the preparation of various tri‐O‐substituted cellulose ethers. By this method, in which a mixture consisting of SO 2 , diethylamine (DEA), and dimethylsulfoxide (DMSO) and powdered sodium hydroxide were used as a cellulose solvent and a base, respectively, many tri‐ O ‐arylmethylcelluloses could be prepared from the corresponding chlorides. Cellulose ethers containing double bonds such as tri‐ O ‐allyl, tri‐ O ‐methallyl‐, and tri‐ O ‐2‐butenylcellulose were also prepared from the corresponding chlorides under a milder condition than that used for the preparation of tri‐ O ‐arylmethylcelluloses. Reaction factors accelerating complete etherification were discussed.