Cellulose microfibrils with modified surface, preparation...

Details Cellulose microfibrils with modified surface, preparation... Cellulose microfibrils with modified surface, preparation...

C - Chemistry, Metallurgy

08

B

C08B 11/00 (2006.01) C08B 15/00 (2006.01) C08L 1/26 (2006.01) C08L 1/28 (2006.01)

Patent

CA 2344201

The invention concerns cellulose microfibrils with modified surface, characterised in that the hydroxyl functions present at the surface of the microfibrils are etherified with at least an organic compound comprising at least a function capable of reacting with said hydroxyl functions, and the degree of surface substitution (DSs) is at least 0.05. The invention also concerns a method for obtaining said microfibrils and their use as agent for modifying viscosity, texture and/or as reinforcing filler.

La présente invention a pour objet les microfibrilles de cellulose à surface modifiée, caractérisées en ce que les fonctions hydroxyles présentes à la surface des microfibrilles sont étherifiées par au moins un composé organique comprenant au moins une fonction pouvant réagir avec lesdites fonctions hydroxyles, et en ce que le degré de substitution de surface (DSs) est d'au moins 0,05. L'invention a également pour objet un procédé d'obtention desdites microfibrilles, ainsi que leur utilisation comme agent viscosant, texturant et/ou charge de renfort.

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