Soft tissue having reduced hydrogen bonding

摘要

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.

主权项

1. A method of forming a high bulk tissue web comprising the steps of mixing cellulosic fiber and a first organic solvent to form an fiber slurry, adjusting the pH of the fiber slurry with a caustic agent to a pH greater than about 9.0 thereby forming a alkaline fiber slurry; adding a cyanuric halide having general Formula (I) in the presence of a second organic solvent:where R=chlorine, bromine, fluorine or iodine to the alkaline fiber slurry thereby forming a modified cellulosic fiber; washing the modified cellulosic fiber; and forming a tissue web from the washed modified 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 6 cc/g.