C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
167/300, 261/53,
C08L 1/02 (2006.01) A23L 1/0534 (2006.01) A23L 1/054 (2006.01) A61K 8/02 (2006.01) A61K 8/73 (2006.01) A61Q 19/00 (2006.01) C04B 18/24 (2006.01) C04B 24/38 (2006.01) C04B 40/00 (2006.01) C08L 1/00 (2006.01) C09K 8/10 (2006.01) C09K 8/20 (2006.01) C11D 3/22 (2006.01)
Patent
CA 2261093
The invention concerns compositions containing essentially amorphous cellulose nanofibrils, at least one additive selected among carboxyl cellulose with a degree of substitution higher than 0.95, one natural polysaccharide, one polyol. and optionally at least one co-additive, the content in additive and optional co-additive being not more than wt.30 % relative to the weight of nanofibrils and additive and optional co-additive. The invention also concerns a method for preparing such compositions, consisting in adding to an essentially amorphous nanofibril suspension, the additive, the optional co-additive, then in drying the suspension thus additivated. The resulting compositions are easily redispersable and preserve their original rheological properties.
La présente invention a pour objet des compositions comprenant des nanofibrilles de cellulose essentiellement amorphes, au moins un additif choisi parmi la cellulose carboxylée présentant un degré de substitution supérieur à 0,95, un polysaccharide naturel, un polyol, et éventuellement au moins un co-additif, la teneur en additif et en co-additif éventuel étant inférieure ou égale à 30 % en poids par rapport au poids de nanofibrilles et d'additif et de co-additif éventuel. Elle a de même pour objet un procédé de préparation de telles compositions, consistant à ajouter à une suspension de nanofibrilles essentiellement amorphes, l'additif, le co-additif éventuel, puis à sécher la suspension ainsi additivée. Les compositions obtenues sont facilement redispersables et conservent leurs propriétés rhéologiques initiales.
Benchimol Joel
Cantiani Robert
Guerin Gilles
Senechal Alain
Vincent Isabelle
Rhodia Chimie
Robic
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