Soft tissue having reduced hydrogen bonding
AssigneeKimberly-Clark Worldwide, Inc.
InventorsSeungRim Yang, JeongKyung Kim, Jian Qin
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Abstract
The present invention provides a modified cellulosic fiber having reduced hydrogen bonding capabilities. The modified fiber formed in accordance with the present invention may be useful in the production of tissue products having improved bulk and softness. More importantly, the modified fiber is adaptable to current tissue making processes and may be incorporated into a tissue product to improve bulk and softness without an unsatisfactory reduction in tensile.
Claims20
A method of increasing the bulk of a tissue web comprising the steps of reacting cellulosic fiber with a water soluble reagent selected from the group consisting of a cyanuric halide having the general Formula (I):
- where R1 equals F, Cl, Br, or I and R2 equals (CH2)n—OH (n=1-3), (CH2)n—COOH (n=1-3), C6H5—COOH, or HSO3X where X equals (CH2)n (n=1-3) or C6H4, and a vinyl sulfone having the general Formula (II):
- where R1 equals a hydrocarbon having from about 1 to about 5 carbon atoms and R2 equals CH3, HC═CH2, (CH2)n—CH3 (n=1-3), (CH2)n—COOH (n=1-3), C6H4—COOH, or C6H5;
- treating the cellulosic fiber with a caustic agent;
- washing the cellulosic fiber;
- and forming a tissue web from the cellulosic fiber, wherein the tissue web has a basis weight greater than about 10 grams per square meter (gsm) and a sheet bulk greater than about 5 cc/g.
A tissue web comprising modified wood pulp fibers having a nitrogen content greater than about 0.2 weight percent, the tissue web having a basis weight from about 10 to about 60 gsm and a sheet bulk greater than about 10 cc/g.
A tissue web comprising modified wood pulp fibers having a sulfur content greater than about 0.5 weight percent, the tissue web having a basis weight from about 10 to about 60 gsm and a sheet bulk greater than about 10 cc/g.
Dependencies are inferred from the claim text.