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US 6,444,314 B1Granted
Lyocell fibers produced from kraft pulp having low average degree of polymerization values
AssigneeWeyerhaeuser Company
InventorsMengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
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Abstract
The present invention is directed to lyocell fibers having a high hemicellulose content of at least 5%, a low lignin content as measured by a kappa number less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) in the range of 200 to 1100. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
Claims23
Lyocell fiber comprising:
- a treated Kraft pulp comprising:
- (a) at least 5% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of from about 200 to about 1100;
- and
- (c) a kappa number of less than 2.0.
2 more elements
Dependencies are inferred from the claim text.