Abstract: A composite powder containing microstructured particles having inhibitory calcium carbonate, obtainable by means of a method in which large particles are combined with small particles, wherein the large particles have an average particle diameter within the range from 0.1 pm to 10 mm, the large particles comprise at least one polymer, the small particles are arranged on the surface of the large particles and/or distributed inhomogeneously within the large particles, the small particles comprise calcium carbonate particles, the small particles have an average particle size within the range from 0.01 pm to 1.0 mm, wherein the small particles are obtainable by means of a method in which calcium carbonate particles are coated with a composition comprising, based on its total weight, at least 0.1% by weight of at least one weak acid.

Abstract: The use of inhibitory calcium carbonate as additive for a composition containing at least one polymer different from cellulose, wherein the inhibitory calcium carbonate is obtainable by means of a method in which calcium carbonate particles are coated with a composition comprising, based on its total weight, at least 0.1% by weight of at least one weak acid. Further described is a composition containing at least one polymer different from cellulose and inhibitory calcium carbonate.

Abstract: A composite powder containing microstructured particles obtainable by means of a method in which large particles are combined with small particles, wherein the large particles have an average particle diameter within the range from 0.1 ?m to 10 mm, the large particles comprise at least one polymer, the small particles are arranged on the surface of the large particles and/or distributed inhomogeneously within the large particles, the small particles comprise sphere-shaped precipitated calcium carbonate particles having an average diameter within the range from 0.05 ?m to 50.0 ?m, wherein the sphere-shaped calcium carbonate particles are obtainable by means of a method in which a. a calcium hydroxide suspension is initially charged, b. carbon dioxide or a carbon dioxide-containing gas mixture is introduced into the suspension from step a. and c. resultant calcium carbonate particles are separated off, with 0.3% by weight to 0.

Abstract: A composite powder containing microstructured particles obtainable by means of a method in which large particles are combined with small particles, wherein the large particles have an average particle diameter within the range from 10 ?m to 10 mm, the large particles comprise at least one polymer, the small particles are arranged on the surface of the large particles and/or distributed inhomogeneously within the large particles, the small particles comprise a calcium salt, the small particles have an average particle size within the range from 0.01 ?m to 1.0 mm, wherein the particles of the composite powder have an average particle size d50 within the range from 10 ?m to less than 200 ?m, and the fine-particle fraction of the composite powder is less than 50% by volume.

Abstract: A dry liquid, comprising at least one additive having a molar mass greater than 20 g/mol, a melting temperature less than 500° C., and a boiling point, measured at 101325 Pa, greater than 100° C. and at least one calcium carbonate as a carrier material, wherein the calcium carbonate is precipitated calcium carbonate. The dry liquid is suitable in particular for introducing at least one preferably fluid additive into a chemical composition.

Abstract: Microstructured composite particles obtainable by a process in which large particles are bonded to small particles. The composite particles are preferably used as an additive, especially as a polymer additive, as an additive or starting material for the production of components, for applications in medical technology and/or in microtechnology and/or for the production of foamed articles.

Abstract: Stabilized, spherical, amorphous calcium carbonate particles having a mean particle diameter in the range from 0.05 ?m to 2.0 ?m and a water content of at most 5.0 wt % measured as residual moisture at 200° C., wherein the calcium carbonate particles comprise at least one substance which has a molar mass greater than 100 g/mol and satisfies the formula R—Xn, wherein the radical R represents a radical comprising at least one carbon atom, the radical X represents a group which comprises at least one oxygen atom and at least one carbon atom, sulphur atom, phosphorus atom and/or nitrogen atom and n preferably constitutes a whole number in the range from 1 to 20, the proportion of crystalline calcium carbonate is less than 30 wt %, and the specific surface area of the calcium carbonate particles is at most 20 m2/g.

Abstract: An elastomeric article comprising at least one elastomer and precipitated calcium carbonate particles, wherein the sphere equivalent particle size of said precipitated calcium carbonate particles is less than 1.0 ?m. The elastomeric article is preferably produced using a latex dipping process, and is particularly suitable for use as a glove, a condom, or a balloon.

Abstract: Microstructured composite particles obtainable by a process in which large particles are bonded to small particles. The composite particles are preferably used as an additive, especially as a polymer additive, as an additive or starting material for the production of components, for applications in medical technology and/or in microtechnology and/or for the production of foamed articles.

Abstract: Stabilized, spherical, amorphous calcium carbonate particles having a mean particle diameter in the range from 0.05 ?m to 2.0 ?m and a water content of at most 5.0 wt % measured as residual moisture at 200° C., wherein the calcium carbonate particles comprise at least one substance which has a molar mass greater than 100 g/mol and satisfies the formula R—Xn, wherein the radical R represents a radical comprising at least one carbon atom, the radical X represents a group which comprises at least one oxygen atom and at least one carbon atom, sulphur atom, phosphorus atom and/or nitrogen atom and n preferably constitutes a whole number in the range from 1 to 20, the proportion of crystalline calcium carbonate is less than 30 wt %, and the specific surface area of the calcium carbonate particles is at most 20 m2/g.

Abstract: A dry liquid, comprising at least one additive having a molar mass greater than 20 g/mol, a melting temperature less than 500° C., and a boiling point, measured at 101325 Pa, greater than 100° C. and at least one calcium carbonate as a carrier material, wherein the calcium carbonate is precipitated calcium carbonate. The dry liquid is suitable in particular for introducing at least one preferably fluid additive into a chemical composition.

Abstract: Porous hollow fibers comprising first pores having an average length in the range from 0.045 ?m to 120 ?m and an average width in the range from 0.030 ?m to 20 ?m, measured in a fiber direction, wherein the ratio of the average length of the first pores to the average width of the first pores is at least 1.5:1, second pores having an average length in the range from 0.1 nm to 99 nm and an average width in the range from 1 nm to 20000 nm, measured in the direction of the fiber in each case, wherein the ratio of the average length of the second pores to the average width of the second pores is not more than 1:1.5. Preferred application areas include use in fillings, in selectively permeable membranes, for the immobilization of enzymes and/or cells, for hemodialysis, and for storage of hydrogen.