Process for the production of nano-fibrillar cellulose gels
AssigneeOmya International AG
InventorsPatrick A.C. Gane, Joachim Schoelkopf, Daniel Gantenbein, Michel Schenker
Life of this patent
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Abstract
The present invention relates to a process for the production of nano-fibrillar cellulose gels by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of the at least one filler and/or pigment until a gel is formed, as well as the nano-fibrillar cellulose gel obtained by this process and uses thereof.
Claims29
A nano-fibrillar cellulose gel obtained by the process comprising the steps of:
- (a) providing cellulose fibres;
- (b) providing a filler;
- (c) combining the cellulose fibres of step (a) and the filler;
- and
- (d) fibrillating the cellulose fibres and the filler from step (c) until a nano-fibrillar cellulose gel is formed,
- wherein the filler is calcium carbonate, and wherein in step (d) the weight ratio of fibres to filler on a dry weight basis is from 1:33 to 10:1.
A nano-fibrillar cellulose gel obtained by the process comprising the steps of::
- (a) providing cellulose fibres;
- (b) providing a filler;
- (c) combining the cellulose fibres of step (a) and the filler of step (b);
- and
- (d) fibrillating the cellulose fibres and the filler from step (c) until a nano-fibrillar cellulose gel is formed,
- wherein the filler comprises calcium carbonate and one or more of dolomite, talc, bentonite, clay, magnesite, satin white, sepiolite, huntite, diatomite, and a silicate, and wherein in step (d) the weight ratio of fibres to filler on a dry weight basis is from 1:33 to 10:1.
Dependencies are inferred from the claim text.