Coatex

Omya International Ag

Coatex S.a.s.

Murielle Guillot

Jean-Marc Suau

Matthias Buri

Olivier Guerret

Francois Dupont

Jacques Mongoin

Yves Kensicher

Denis Ruhlmann

Renaud Souzy

François Dupont

The present disclosure relates to a method for improving the auto-dispersant characteristic in water of a mineral substance. The method includes the steps of dry-grinding, in the presence of a formulation, a mineral substance selected from a dolomite, talc, titanium dioxide, alumina, kaolin and calcium carbonate, wherein the formulation contains a polyglycerol and no glycerol.

Use of glycerol as an agent to improve the self-dispersing properties of a mineral material to be added to an aqueous composition

The invention consists in the use, as a dry grinding aid agent of a mineral matter chosen from among the dolomites, talc, titanium dioxide, alumina, kaolin and calcium carbonate, the function of which is to reduce the specific grinding energy and to increase the grinding capacity, of formulations containing glycerol.

Use of formulations containing glycerol as a dry grinding aid agent of mineral matter

The present disclosure describes methods for improving the auto-dispersant characteristic in water of mineral substances, such methods involving dry-grinding of a mineral substance in the presence of a formulation. In some embodiments the formulation includes glycerol and at least one agent in aqueous or pure form. In other embodiments the formulation includes an aqueous polyglycerol.

Comb polymers useful in paper coating dispersions.

Hydroxy polyalkylene glycol function (meth) acrylic comb polymers, their use as shear-thinning agents in coating dispersions and dispersions containing them

The present invention concerns weakly anionic polymers including their use in paper coatings, especially those intended for paper for inkjet printing. These additives provide the sought thickening function, while improving water retention very appreciably. The invention also concerns a method of manufacture of such coatings, together with the coatings obtained in this manner.

Weakly anionic polymers, uses thereof

Polymers, paper coating compositions, and coated paper.

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Caluire et Cuire, France

Murielle Guillot