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: A tobacco product wrapping, material comprising composite particles is described, the composite particles being obtainable by a method in which an aqueous suspension containing calcium carbonate particles is prepared, and a metal salt comprising an aluminum cation is added. The metal salt is able to form a basic metal component in the suspension; and has a solubility of greater than 9.0 mg/L in water, measured at the pH value of the prepared suspension and at a temperature of 20° C. The invention further relates to a method for the production of the tobacco product wrapping material, the use of such tobacco product wrapping material for the production of tobacco products, and the tobacco products produced with the tobacco product wrapping material.

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: A tobacco product wrapping, material comprising composite particles is described, the composite particles being obtainable by a method in which an aqueous suspension containing calcium carbonate particles is prepared, and a metal salt comprising an aluminum cation is added. The metal salt is able to form a basic metal component in the suspension; and has a solubility of greater than 9.0 mg/L in water, measured at the pH value of the prepared suspension and at a temperature of 20° C. The invention further relates to a method for the production of the tobacco product wrapping material, the use of such tobacco product wrapping material for the production of tobacco products, and the tobacco products produced with the tobacco product wrapping material.

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.

Abstract: The particles comprise a core of calcium carbonate and a coating covering at least part of the surface of the core, the coating being carried out in at least two distinct consecutive steps, each step using a different coating agent. The coating agent used in the first step is preferably a fatty acid and the coating agent used in the second step is preferably a diol or a triol. The particles can be used as a functional filler, i.e. in plastisols formulations.

Abstract: Particles of precipitated calcium carbonate with a rhombohedral crystal morphology exhibiting a low sodium content and a particle size distribution with a low cutoff value. Process for making such particles. Use of the particles as filler in polymer films.

Abstract: The particles comprise a core of calcium carbonate and a coating covering at least part of the surface of the core, the coating being carried out in at least two distinct consecutive steps, each step using a different coating agent. The coating agent used in the first step is preferably a fatty acid and the coating agent used in the second step is preferably a diol or a triol. The particles can be used as a functional filler, i.e. in plastisols formulations.

Abstract: Ultra-dry calcium carbonate particles, a method for drying calcium carbonate particles and also the use of the resulting dried calcium carbonate as a flow property regulating agent in sealing compounds or adhesive compositions. The calcium carbonate particles are dried with microwaves. The drying can take place in a continuous belt apparatus, a batch treatment apparatus or a rotary-tube apparatus, and calcium carbonate particles having a degree of dryness of 0 to 0.1% H2O can be obtained.

Abstract: A process comprising introducing CO2 into milk of lime, in which the milk of lime is first ground, and then the CO2 is introduced to precipitate the calcium carbonate.

Abstract: A process for continuously producing precipitated calcium carbonate having a controllable particle diameter, in which nucleation and crystal growth are carried out in separate phases or phases. The size of the calcium carbonate particles is determined and/or controlled by the concentration of the calcium hydroxide suspension and by the ratio of CO2 introduced to the volume of Ca(OH)2 suspension as early as in the nucleation phase.

Abstract: A process for the preparation of precipitated calcium carbonate by introducing CO2 into milk of lime, in which the milk of lime is first ground, and then the CO2 is introduced to precipitate the calcium carbonate.

Abstract: Bimolecular coated calcium carbonate and a process for controlled surface treatment of calcium carbonate according to which an amount of coating determined from the mean particle diameter (dp) of the calcium carbonate is contacted with the calcium carbonate particles. The way in which the amount of coating agent is determined enables purposeful control of the properties of the coated calcium carbonate particles to adapt them for use as functional filling materials in different technical applications.

Abstract: A plastic material composed of silicon carbide powder, polycarbosilane, organic solvent, and optionally boron compounds and/or other additives, preferably porosity agents; and the use of this plastic composition for producing shaped parts and semi-finished products by plastic shaping.

Abstract: A binder-containing granulated silicon carbide products for the manufacture of highly dense silicon carbide ceramic products and the SiC ceramic products which can be made from the novel granulated silicon carbide products, especially highly dense SiC high-performance pressurelessly sintered ceramics.