Crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks
AssigneeWeyerhaeuser NR Company
InventorsMengkui Luo, S. Ananda Weerawarna, Jian Qin, James H Wiley
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Abstract
Substantially water-insoluble, water-swellable, non-regenerated, carboxyalkyl cellulose fibers, wherein the fibers have a surface having the appearance of the surface of a cellulose fiber, and wherein the fibers include a plurality of non-permanent intra-fiber metal crosslinks and a plurality of permanent intra-fiber crosslinks; and fiber bundles that include the fibers.
Claims18
Substantially water-insoluble, water-swellable, non-regenerated, carboxyalkyl cellulose fibers, wherein the fibers have a surface having the appearance of the surface of a cellulose fiber, and wherein the fibers comprise a plurality of non-permanent intra-fiber metal crosslinks and a plurality of permanent intra-fiber crosslinks.
Substantially water-insoluble, water-swellable, non-regenerated, carboxyalkyl cellulose fibers, wherein the fibers have a surface having the appearance of the surface of a cellulose fiber, and wherein the fibers comprise a plurality of non-permanent intra-fiber metal crosslinks and a plurality of permanent intra-fiber crosslinks, wherein the permanent intra-fiber crosslinks comprise covalent crosslinks formed from 1,3-dichloro-2-propanol.
A fiber bundle, comprising a plurality of substantially water-insoluble, water-swellable, non-regenerated, carboxyalkyl cellulose fibers, wherein the fibers have a surface having the appearance of the surface of a cellulose fiber, and wherein the fibers comprise a plurality of non-permanent intra-fiber metal crosslinks and a plurality of permanent intra-fiber crosslinks.
Dependencies are inferred from the claim text.