D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/69 (2006.01) C04B 35/636 (2006.01) C09C 1/02 (2006.01) C09C 3/10 (2006.01)
Patent
CA 2178593
The disclosed invention relates to a composition comprising finely divided cationically charged particles of an inorganic material treated with at least one of anionic polysaccharide or anionically modified polysaccharide. The disclosed invention further relates to a method of providing paper of improved strength. The method entails providing finely divided particles of inorganic material, treating the particles with at least one of anionic polysaccharide or anionically modified polysaccharide, and adding the treated particles to cellulose fiber during an alkaline process for making paper. Also, an alkaline paper comprising the finely divided particles of inorganic material treated with at least one of anionic polysaccharide or anionically modified polysaccharide is disclosed.
L'invention se rapporte à une composition comprenant des particules chargées cationiquement, finement divisées, d'une matière inorganique traitée avec un polysaccharide anionique et/ou un polysaccharide modifié anioniquement. L'invention se rapporte également à un procédé de fabrication du papier visant à améliorer sa résistance. Le procédé consiste à obtenir des particules finement divisées d'une matière inorganique, à traiter ces particules avec un polysaccharide anionique et/ou un polysaccharide modifié anioniquement, et à ajouter les particules traitées à la fibre de cellulose lors d'un procédé alcalin de fabrication du papier. L'invention concerne de plus un papier alcalin comprenant les particules finement divisées de matière inorganique traitée avec un polysaccharide anionique et/ou un polysaccharide modifié anioniquement.
Marks & Clerk
Minerals Technologies Inc.
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