High-wet-bulk cellulosic fibers
AssigneeWeyerhaeuser Company
InventorsRichard A. Jewell, John A. Westland
Life of this patent
Estimating the term…
Abstract
The present invention provides cellulosic fibers having high wet bulk and methods for their preparation. In one embodiment, the invention provides cellulosic fibers catalytically crosslinked with glyoxal and, optionally, a glycol. In another embodiment, cellulosic fibers are crosslinked with a combination of glyoxal and a glyoxal-derived resin selected from the group consisting of a glyoxal/polyol condensate, a cyclic urea/glyoxal/polyol condensate, a cyclic urea/glyoxal condensate, and mixtures thereof.
Claims11
Individualized, crosslinked fluff pulp cellulosic fibers comprising cellulosic fibers treated with an amount of glyoxal and a crosslinking catalyst effective to provide individual crosslinked fluff pulp cellulosic fibers having a wet bulk greater than about 20 cc/g under a load of 0.6 kPa.
Individualized, crosslinked fluff pulp cellulosic fibers comprising cellulosic fibers treated with an amount of glyoxal, a glycol, and a crosslinking catalyst effective to provide individual crosslinked fluff pulp cellulosic fibers having a wet bulk greater than about 20 cc/g under a load of 0.6 kPa.
Dependencies are inferred from the claim text.