To provide a method for producing a carboxyalkylcellulose derivative, industrially simple and of high reaction selectivity, that produces a carboxyalkyl group-introducing cellulose derivative efficiently from a powdered cellulose of low crystallinity.
This method for producing the carboxyalkylcellulose derivative includes reacting the powdered cellulose of low crystallinity, in the presence of a basic catalyst, with α,β-unsaturated carboxylate ester represented by Formula (1): R1-(R2-)C=C(-R3)-R4 (wherein R1 and R2 are each independently a hydrogen atom or a substituted group represented by -COOR5, however both are not to be a hydrogen atom; R3 and R4 are each independently a hydrogen atom or a methyl group; R5 is a 1-17C hydrocarbon group, a hydrogen atom or an alkali metal atom, however in the molecule at least one R5 is a hydrocarbon group, and when two R5s are present in the molecule, both may be the same or different, however the total carbon number of the compound represented by Formula (1) is 4-20).
IHARA TAKESHI
| JPH01229001A | 1989-09-12 | |||
| JPS505320A | 1975-01-21 | |||
| JP2000513042A | 2000-10-03 | |||
| JPH01229001A | 1989-09-12 |
Masamichi Tohei
Makoto Kataoka
Kenichi Hirasawa
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