Abstract: A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-containing material in a mixture obtained by contacting the calcium carbonate-containing material with at least one grinding agent selected from specific styrene-maleic anhydride co-polymers and/or specific derivatives of styrene-maleic anhydride co-polymers.

Abstract: A process of producing a surface-reacted calcium carbonate is described. In embodiments, a calcium carbonate-comprising material is treated with at least one H3O+ ion donor, carbon dioxide, and at least one water-soluble metal cation source in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate. A surface-reacted calcium carbonate obtained by said process and its use are also described.

Abstract: The present invention relates to a breathable film comprising at least one thermoplastic polymer and a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof, a process for producing the same, and the use thereof. Furthermore, the present invention is directed to the use of a surface-treated filler material product comprising a treatment layer comprising at least one mono-substituted succinic anhydride and/or at least one mono-substituted succinic acid and/or salty reaction product(s) thereof in breathable films.

Abstract: A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-containing material in a mixture obtained by contacting the calcium carbonate-containing material with at least one grinding agent selected from specific styrene-maleic anhydride co-polymers and/or specific derivatives of styrene-maleic anhydride co-polymers.

Abstract: The present invention refers to a process for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate and its uses. The process may be carried out in a reactor system comprising a tank (1) equipped with a stirrer (2), at least one filtering device (4) and a grinding device (18).

Abstract: The present invention relates to a method for the treatment of a surface-reacted calcium carbonate, wherein the treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts, iron (II)-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof, a treated surface-reacted calcium carbonate as well as a use of the treated surface-reacted calcium carbonate as oxygen scavenger.

Abstract: The present invention refers to the use of a surface-treated calcium carbonate-comprising material and/or magnesium carbonate-comprising material as oxygen scavenger; wherein the surface treatment agent is selected from the group consisting of ascorbic acid and/or salts thereof, gallic acid and/or salts thereof, unsaturated fatty acids and/or salts thereof, elemental iron, iron (II)-salts and iron (ID-comprising oxides, iron (II, III)-comprising oxides and mixtures thereof; and wherein the total weight of the surface treatment agent on the total surface area of the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material is from 0.01 to 40 mg/m2, based on the at least one calcium carbonate-comprising material and/or magnesium carbonate-comprising material.

Abstract: The present invention relates to a process for the surface-treatment of a calcium carbonate-comprising material, to a surface-treated calcium carbonate-comprising material obtained by such a process and the use of such a surface-treated calcium carbonate-comprising material.

Abstract: A process for the preparation of a mineral filler product is disclosed, the process comprising a step of wet grinding a calcium carbonate-containing material in a mixture obtained by contacting the calcium carbonate-containing material with at least one grinding agent selected from specific styrene-maleic anhydride co-polymers and/or specific derivatives of styrene-maleic anhydride co-polymers.

Abstract: A process for the deinking of a coated paper or paperboard is disclosed, the process comprises a step of providing a coating layer comprising a calcium- or magnesium-exchanged clay which is deposited on the paper or paperboard before the ink layer. In a further step said calcium- or magnesium-exchanged clay is activated and the paper is subsequently treated with water.

Abstract: The present invention relates to a polymer composition comprising at least one polymeric resin and from 0.1 to 95 wt.-% of at least one surface reactive white mineral material, a process for preparing a surface reactive white mineral material, a surface reactive white mineral material obtainable by the process, a fiber and/or filament and/or film and/or thread and/or breathable film comprising the polymer composition and/or the surface reactive white mineral material, an article comprising the polymer composition and/or the surface reactive white mineral material and/or the fiber and/or filament and/or film and/or thread and/or breathable film as well as the use of a phosphoric acid ester blend for decreasing the hydrophilicity and/or moisture pick up susceptibility of the surface reactive white mineral material-containing particle surface.

Abstract: The present invention relates to a process for preparing an aqueous suspension comprising a mineral pigment material and a depolymerized carboxymethylcellulose having a degree of carboxylation in the range from 0.2 to 2.2, a molecular weight in the range from 5000 to 40000 g/mol, and a polydispersity index in the range from 2 to 10.

Abstract: The present invention relates to an installation for the purification of minerals, pigments and/or fillers and/or the preparation of precipitated earth alkali carbonate and/or mineralization of water and to the use of such an installation for the purification of minerals, pigments and/or fillers and/or mineralization of water and/or the preparation of precipitated earth alkali carbonate.

Abstract: A process for the preparation of a mineral filler product is disclosed, the process comprising a step of dry grinding a calcium carbonate-comprising material in a mixture obtained by contacting the calcium carbonate-comprising material with at least one polydimethylsiloxane as grinding agent.

Abstract: The invention relates to a process for manufacturing aqueous mineral material suspensions or dried mineral materials using at least one lithium ion neutralised water-soluble organic polymer, the ground mineral materials obtained by this process, the use of the mineral materials in paper, paints and plastics, as well as the use of the lithium ion neutralised water-soluble organic polymer in the manufacturing process as a dispersing and/or grinding enhancer.

Abstract: The present invention relates to a process for the production of a mineral filler product comprising a step of dry grinding a calcium carbonate-containing material in the presence of an agent being a polyol. The mineral filler product according to the present invention was found to have a reduced moisture pickup as compared to prior art products.

Abstract: The present invention relates to a modified mineral-based filler comprising at least one alkaline earth metal carbonate-comprising material, and at least one water insoluble copper salt comprising the copper mineral malachite in an amount of at least 10 wt.-%, which covers at least partially the surface of the at least one alkaline earth metal carbonate-comprising material, and a method of producing the same.

Abstract: The invention relates to a process for manufacturing aqueous mineral material suspensions or dried mineral materials using at least one lithium ion neutralized water-soluble organic polymer, the ground mineral materials obtained by this process, the use of the mineral materials in paper, paints and plastics, as well as the use of the lithium ion neutralized water-soluble organic polymer in the manufacturing process as a dispersing and/or grinding enhancer.

Abstract: The present invention relates to a process for the production of a mineral filler product comprising a step of dry grinding a calcium carbonate-containing material in the presence of an agent being a polyol. The mineral filler product according to the present invention was found to have a reduced moisture pickup as compared to prior art products.

Abstract: The present invention relates to an earth alkali carbonate-containing filler material having a volatile onset temperature of ?350 ° C., which is at least partially surface modified by using at least one polyhydrogensiloxane for increasing the hydrophobicity and/or decreasing the moisture pick up, a process for preparing such a surface modified earth alkali carbonate-containing filler material, a fibre and/or filament and/or film and/or thread and/or breathable film comprising the surface modified earth alkali carbonate-containing filler material as well as an article comprising the surface modified earth alkali carbonate-containing filler material and/or the fibre and/or filament and/or film and/or thread and/or breathable film, preferably its use in polyester products.