Softened comminution pulp

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 17/03 (2006.01) D21C 9/00 (2006.01)

Patent

CA 2354565

The present invention relates to processes for softening cellulose pulp using chemical softening agents or debonders, which include compositions comprising lower alkyl acid esters or cyclic esters of polyhydroxy compounds, without adversely affecting the absorbency of the cellulose fiber products thereof, and products thereof. The process of the invention may also be used in combination with plasticizing agents for cellulose such as glycerol, mono- and di-saccharides, glycols, and oligomers thereof. The process of the invention provides cellulosic fiber which is easier to fluff (refiberize) and to subsequently densify airlaid pads formed from the resulting individualized fibers, without adversely affecting absorbency.

L'invention concerne des procédés d'adoucissement de la pâte cellulosique faisant appel à des agents adoucissants chimiques ou des agents défaisant des liaisons. Ces procédés comprennent des compositions contenant des esters d'acide alkyle inférieurs ou des esters cycliques de composés polyhydroxylés, et n'affectent pas la capacité d'absorption des produits en fibre cellulosique et des produits correspondants. Le procédé décrit dans l'invention peut également être utilisé avec des agents plastifiants de cellulose, tels que le glycérol, les mono- et di-saccharides, le glycol et les oligomères correspondants. Ce procédé utilise de la fibre cellulosique qui est plus facile à deserrer (redéfibrer) et qui permet donc de densifier les coussins d'air formés par les fibres individualisées résultantes, sans affecter la capacité d'absorption.

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