Abstract: The invention discloses a method of incorporating deagglomerated barium sulphate having an average primary particle size of less than 0.5 ?m and coated with a dispersant into plastics or precursors of plastics, for example into polyols. The deagglomerated barium sulphate is dispersed in an organic solvent, the dispersion is incorporated into the plastic or the precursor of the plastic, and the solvent is evaporated off.

Abstract: Use of nanoparticles of barium sulfate or of calcium carbonate, with a particle size of less than or equal to 150 nm and greater than or equal to 0.5 nm, as filler in transparent polymer compositions. The compositions obtained simultaneously show good scratch resistance, good impact strength, good tensile strength, good heat stability and good visible and UV radiation stability, while at the same time conserving excellent transparency. The compositions may be used as replacement materials for glass in the motor vehicle sector and in the optics sector.

Abstract: The invention discloses nanoparticles which have preferably a particle size of less than 100 nm, have been coated with a dispersant, and optionally further comprise a crystallization inhibitor. Preferred dispersants are those which endow the nanoparticles with a hydrophilic or hydrophobic surface and contain reactive groups for coupling to or into polymers. Also disclosed are plastics comprising nanoparticles of this kind.

Abstract: The invention discloses dispersions of preferably modified strontium carbonate in organic liquids, for example in alcohols, ketones or particularly methylene chloride. The dispersions are usable for the preparation of polymers which have reduced birefringence or no birefringence and are therefore suitable for optical applications. The powder obtainable after the removal of the organic liquid can surprisingly be converted back to a dispersion with little energy.

Abstract: Epoxy resins comprising deagglomerated barium sulphate with an average particle size of less than 0.5 ?m feature increased flexural impact strength and breaking extension. Epoxy resins of this kind can be used as, for example, composite material or binders in watercraft construction, in wind turbines, in pipes, for containers or in aircraft construction, in particular in composite materials comprising glass fibre or carbon fibre.

Abstract: Curable compositions comprising deagglomerated barium sulfate containing at least one dispersant and at least one crystallization inhibitor and having a primary particle size <0.5 ?m, preferably <0.1 ?m, in particular <30 nm, and their use.

Abstract: The invention discloses deagglomerated barium sulphate which has an average primary particle size of less than 0.5 ?m and is coated with a dispersant. The dispersant has preferably reactive groups which are able to interact with the surface of the barium sulphate; particularly preferred dispersants are those which are able to endow the barium sulphate with a hydrophilic surface and have reactive groups for coupling to or into polymers. Also disclosed is a plastics premix comprising the deagglomerated, coated barium sulphate.

Abstract: Particles of strontium carbonate, barium carbonate, strontium sulfate and/or barium sulfate having a sufficient degree of fineness, especially when produced synthetically, are suitable as abrasive agents in chemical mechanical polishing (CMP polishing) of components, e.g., microelectronic components such as silicon wafers. The alkaline earth metal salt compounds are used as slurries in water and/or organic liquids and optionally may contain a dispersing agent, and preferably have a pH value of at least 8.

Abstract: Micronized barium sulfate (BaSO4) and methods for the production and use thereof. The micronized barium sulfate of the invention is particularly suitable for use as an additive or filler for adhesives, colorants, rubber articles and/or cosmetics.

Abstract: Particles of strontium carbonate, barium carbonate, strontium sulfate and/or barium sulfate having a sufficient degree of fineness, especially when produced synthetically, are suitable as abrasive agents in chemical mechanical polishing (CMP polishing) of components, e.g., microelectronic components such as silicon wafers. The alkaline earth metal salt compounds are used as slurries in water and/or organic liquids and optionally may contain a dispersing agent, and preferably have a pH value of at least 8.

Abstract: Superconductive bodies composed of cuprate material having a very critical current density with outer magnetic fields of up to 5 tesla when the bodies have a content of zinc cations. The bodies can also be subjected to modified oxygen treatment. The preferred cuprate materials are YBCO material and bismuth oxide based on superconductive material such as “2212” or “2223” type superconductive material. The preferred bodies are molded bodies obtained by melt texturing and “powder-in-tube” bodies.

Abstract: Micronized barium sulfate (BaSO4) and methods for the production and use thereof. The micronized barium sulfate of the invention is particularly suitable for use as an additive or filler for adhesives, colorants, rubber articles and/or cosmetics.

Abstract: Micronized barium sulfate (BaSO4) and methods for the production and use thereof. The micronized barium sulfate of the invention is particularly suitable for use as an additive or filler for adhesives, colorants, rubber articles and/or cosmetics.

Abstract: Superconductive bodies composed of cuprate material having a very critical current density with outer magnetic fields of up to 5 tesla when the bodies have a content of zinc cations. The bodies can also be subjected to modified oxygen treatment. The preferred cuprate materials are YBCO material and bismuth oxide based on superconductive material such as “2212” or “2223” type superconductive material. The preferred bodies are molded bodies obtained by melt texturing and “powder-in-tube” bodies.

Abstract: A mixture suitable for the production of melt-processed high-temperature superconductors capable of producing a high levitation force. The mixture contains YBa.sub.2 Cu.sub.3 O.sub.7-x powder with a very low content of copper oxide, i.e. copper not bound in with the YBa.sub.2 Cu.sub.3 O.sub.7-x, and a very low carbon content. Also included are stabilizing (so-called "flux-pinning") additives. Also disclosed is a method or producing the mixture, as well as YBa.sub.2 Cu.sub.3 O.sub.7-x powder with suitable low free copper oxide and carbon contents, used to prepare the mixture.