Process for making soft tissue paper

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 23/04 (2006.01) C11D 1/40 (2006.01) C11D 1/52 (2006.01) C11D 1/62 (2006.01) C11D 1/645 (2006.01) C11D 1/72 (2006.01) C11D 1/75 (2006.01) C11D 1/835 (2006.01) C11D 3/02 (2006.01) C11D 17/04 (2006.01) D21H 17/06 (2006.01) D21H 17/07 (2006.01) D21H 17/66 (2006.01) D21H 21/22 (2006.01) D21H 27/38 (2006.01)

Patent

CA 2346658

Disclosed is a composition for softening a wet laid cellulosic structure. A particularly preferred structure is an absorbent tissue. Further disclosed are tissue structures softened using the composition. The composition includes an effective amount of a softening active ingredient; a vehicle in which the softening active ingredient is dispersed; an electrolyte dissolved in the vehicle; and a bilayer disrupter. The electrolyte and the bilayer disrupter cooperate to cause the viscosity of the composition to be less than the viscosity of a dispersion of the softening active ingredient in the vehicle alone. Preferably, the softening active ingredient is a quaternary ammonium compound with the formula: (R1)4m-N+-[(CH2)n-Y-R3]m X-, the vehicle is water, the electrolyte is calcium chloride, and the bilayer disrupter is a nonionic surfactant. Also disclosed is a method of using the compound by adding it at a use concentration to the wet end of a papermaking process.

L'invention concerne une composition permettant d'adoucir une structure cellulosique voie humide (de préférence, papier de soie absorbant). L'invention concerne d'autres structures adoucies par le biais de cette composition, qui comprend une quantité efficace de principe actif adoucissant; un vecteur de dispersion de ce principe actif; un électrolyte dissous dans le vecteur; et un dislocateur de bicouche. L'électrolyte et le dislocateur de bicouche coopèrent pour réduire la viscosité de la composition par rapport celle d'une dispersion du même principe actif dans le vecteur seul. De préférence, le principe actif est un composé à base d'ammonium quaternaire représenté par la formule: (R1)4-m-N<+>-[(CH2)n-Y-R3]m X<->; le vecteur est de l'eau, l'électrolyte est du chlorure de calcium, et le dislocateur de bicouche est un tensioactif non ionique. L'invention concerne également un procédé relatif à l'utilisation du composé, sous forme d'adjonction suivant une concentration d'utilisation à l'extrémité voie humide d'un processus de fabrication du papier.

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