A surface-reacted calcium carbonate is described. In embodiments, the surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one H.sub.3O.sup.+ 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.

The present invention relates to a composition comprising a first component being an inorganic mineral or mineral-like material having a porous structure, and a second component being a hygroscopic compound; a process for preparing such a composition; a composite material comprising a such a composition; a product comprising such a composition and/or composite material as well as a use of such a composition and/or a composite material as a flame retardant or as a humidity adjusting agent.

A process of producing a surface-reacted calcium carbonate is described. In embodiments, a calcium carbonate-comprising material is treated with at least one H.sub.3O.sup.+ 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.

The present invention refers to an edible composition comprising water and/or at least one edible oil and a surface-reacted calcium carbonate having a volume median particle size d.sub.50 from 0.1 to 90 μm, an edible coating and/or filling comprising the surface-reacted calcium carbonate, a food product or pharmaceutical product or neutraceutical product at least partially coated and/or filled with the edible composition, a method for producing a food product or pharmaceutical product or neutraceutical product at least partially coated and/or filled with the edible composition and the uses of the surface-reacted calcium carbonate as whitening agent or opacifier and/or sweetness reduction agent and/or calorie reduction agent in an edible coating and/or filling of a food product or pharmaceutical product or neutraceutical product, as a replacement agent for titanium dioxide in an edible coating and/or filling of a food product or pharmaceutical product or neutraceutical product as well as for reducing the dry time of an edible composition being at least partially applied on the surface of and/or filled into a food product or pharmaceutical product or neutraceutical product.

The present invention relates to a process for producing an aqueous slurry comprising a blend of surface modified calcium carbonate comprising particles (MCC) and precipitated calcium carbonate comprising particles (PCC), an aqueous slurry comprising the blend, as well as the blend obtainable by drying the aqueous slurry and their uses in paper, paper coating, tissue paper, digital photo paper, paints, coatings, adhesives, plastics, waste water treating or waste water treating agents.

The present invention relates to a process for producing an aqueous suspension of surface-reacted calcium salt particles by mixing a calcium salt excluding monocalcium phosphate and dicalcium phosphate, a calcium phosphate selected from monocalcium phosphate and/or dicalcium phosphate, with water, and grinding the obtained aqueous suspension at a pH value of at least 4.2 to form an aqueous suspension of surface-reacted calcium salt particles.

A method of preserving, controlling an odor, and/or enhancing and/or mediating antimicrobial activity of a substrate is described, the method comprising administering a surface-reacted calcium carbonate. The surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one H.sub.3O.sup.+ 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 method of providing micronutrient delivery and/or plant protection is described, the method comprising administering a surface-reacted calcium carbonate as a metal cation releaser to deliver the micronutrient and/or provide plant protection. The surface-reacted calcium carbonate is obtained by a process comprising treating a calcium carbonate-comprising material with at least one H.sub.3O.sup.+ 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.

The present invention refers to a surface-reacted calcium carbonate having a volume median particle size d.sub.50 from 0.1 to 90 μm, wherein mint oil is adsorbed onto and/or absorbed into the surface of the surface-reacted calcium carbonate as well as the use of such a surface-reacted calcium carbonate for stabilizing mint oil.

The present invention relates to a catalyst system comprising a transition metal compound on a solid carrier which is a surface-reacted calcium carbonate. The invention further relates to a method for manufacturing said catalyst system and to its use in heterogeneous catalysis.