Method for producing hydrophilized cellulose fiber, and method for reducing oxidized cellulose fiber
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United States of America Patent
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Mar 29, 2016
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Nov 7, 2013
app pub date -
Jan 18, 2012
filing date -
Jan 26, 2011
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Abstract
This invention provides a method for hydrophilic cellulose fibers capable of inhibiting decrease in the degree of polymerization and whiteness degree of oxidized cellulose fibers in oxidized cellulose in which a carbon at position 6 of each glucose unit in the cellulose fiber starting material is oxidized to a carboxyl group, the method comprising (A) the step of performing dehalogenation together with reduction,
- the dehalogenation comprising mixing a dehalogenation agent, a reducing agent, and oxidized cellulose fibers, and removing halogens remaining in the oxidized cellulose fibers, andthe reduction comprising reducing a ketone group at position 2 and/or position 3 of each glucose unit in the oxidized cellulose fibers.
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