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US 9,309,385 B2Granted
Cellulose fibers and process for producing the same, cellulose fiber assembly, and cellulose-fiber composite material
AssigneeOji Holdings Corporation
InventorsTomokazu Umemoto, Naohide Ogita, Takanori Shimizu, Yasutomo Noishiki, Hiroyuki Nagatani, Go Banzashi
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Abstract
The present invention relates to cellulose fibers wherein a part of the hydroxyl groups of the cellulose have been substituted with at least one of a carboxy group and formyl group of 0.1 mmol/g or larger based on the weight of the cellulose fibers, and have been further substituted with a chemical modification group other than the carboxy and formyl groups.
Claims10
Cellulose fibers having a number-average fiber diameter of 18-25 nm and comprising cellulose,
- wherein a part of the hydroxyl groups of the cellulose is substituted with at least one of a carboxy group and formyl group from 0.1 mmol/g to 1.0 mmol/g based on the weight of the cellulose fibers, and is further substituted with a chemical modification group other than the carboxy and formyl groups,
- wherein the chemical modification group is an acyl group, and
- wherein a degree of substitution with the chemical modification group is from 0.5 to 1.0.
Dependencies are inferred from the claim text.