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US 9,700,863 B2Granted
Use of depolymerised carboxylated celluloses for dispersing and grinding mineral materials
AssigneeCoatex
InventorsClementine Champagne, Christian Jacquemet, Jacques Mongoin, Jean-Marc Suau
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Abstract
The present invention concerns the use of depolymerized carboxylated celluloses as a dispersing agent or grinding aid agent for aqueous suspensions of mineral materials, intended for paint formulations, plastic formulations, detergent formulations, cosmetic formulations, paper formulations or paper coating colors.
Claims16
A process, comprising grinding, dispersing, or both grinding and dispersing, mineral material in the presence of an aqueous solution of depolymerized carboxylated cellulose, wherein:
- the aqueous solution of the depolymerized carboxylated cellulose has a solids content ranging from 25 wt % to 40 wt % relative to a total weight of the aqueous solution;
- and
- the depolymerized carboxylated cellulose has a molecular weight ranging from 10,000 g/mol to 40,000 g/mol.
A composition comprising
- an aqueous solution of a depolymerized carboxylated cellulose having a solids content between 25 and 40 wt % relative to a total weight of the solution, said depolymerized carboxylated cellulose having a molecular weight ranging from 10,000 g/mol to 40,000 g/mol, and
- a mineral material present in said aqueous solution of the depolymerized carboxylated cellulose in the form of an aqueous suspension of said mineral material,
- wherein said mineral material is selected from the group consisting of calcium carbonate, a dolomite, kaolin, talc, gypsum, lime, magnesia, titanium dioxide, satin white, aluminum trioxide, aluminum trihydroxide, a silica, mica and mixtures thereof.
Dependencies are inferred from the claim text.