Byk-chemie Gmbh

Sharp Kabushiki Kaisha Corporation

Alcove Surfaces Gmbh

Other

Cerdec Aktiengesellschaft Keramische Farben

Elantas Gmbh

Alcover Surfaces Gmbh

Thomas Sawitowski

Ulrich Nolte

Michael Berkei

Alfons Fischer

Karlheinz Haubennestel

Alfred Bubat

Wolfgang Brandau

Wolfgang Pritschins

Klaus-Wilhelm Lienert

Andreas Schulz

Bärbel Gertzen

Thomas Launag

Janin Tecklenburg

Majdi Al-Masri

Gabor Louis Hornyak

G&uuml;enter Schmid

G&uuml;nter Schmid

Sabine Voedisch

Janin Tecklenbrug

A simple, cost-effective stamping or molding in the nanometer range is enabled using a stamping surface or molding face with a surface layer having hollow chambers that have been formed by anodic oxidation.

Stamping tool, casting mold and methods for structuring a surface of a work piece

The invention relates to inorganic-organic composite particles, in particular composite nanoparticles, wherein the composite particles comprise at least one organically based material containing or being made of at least one wax and an inorganically based material, and to a method for the production thereof and to the use thereof.

Particulate wax composites and method for the production thereof and the use thereof

Reactive system comprising at least one component (I) composed of particles in very finely divided form present in a liquid phase of at least one further component (II) with which component (I) is capable of reacting following activation through energy supply, wherein component (I) is not soluble in component (II), process for preparation and use.

Reactive systems

The invention relates to a method for producing particulate composite materials. According to the method, solid inorganic or organic particle agglomerates or particle aggregates that are provided in a dry state, particularly in powder form, are first reduced in size in the gas phase or in a gaseous carrier medium in the presence of organic matrix particles by applying energy. The obtained comminuted particles are dispersed into the organic matrix particles, especially embedded thereinto and/or attached thereto. The composite materials produced in said manner can be used in many different ways and are suitable in particular for use in a large variety of plastic materials, coating materials, paints, and lacquers, especially coating powders, to modify properties during use in the corresponding products and similar.

Production of nanoparticles, especially nanoparticle composites, from powder agglomerates

The invention relates to surface-modified particles, more particularly inorganic-based particles having reactive surfaces, more particularly surfaces containing silane-reactive and/or siloxane-reactive groups, preferably hydroxyl-containing surfaces and/or particles comprising or consisting of metal and/or semi-metal oxides and/or hydroxides, preferably nanoparticles, which on their surface have a polysiloxane-based modifier having more particularly been reacted on their surface with a polysiloxane-based modifier, preferably with the formation of chemical bonds, more particularly covalent bonds, and also to a method of producing these surface-modified particles.

Surface-modified particles and production method

The invention concerns the use of cerium dioxide, especially in the form of discrete cerium dioxide particles with particle sizes in the range from 0.005 to 150 &#x3bc;m, as inorganic radical trap to stabilize organic polymers, especially in the form of polymer-based formulations, varnishes, paints, coating compounds, or the like, against their photochemically, thermally, physically and/or chemically induced degradation by free radicals, especially against the effect of UV, advantageously in an optional combination with at least one UV-absorber and/or at least one additional radical trap. The radical-induced degradation of the organic polymers is effectively prevented by the use of cerium dioxide without the cerium dioxide itself becoming degraded. If a combination of cerium dioxide with an additional UV-absorber or radical trap is used, its effectiveness is extended through the presence of the cerium dioxide.

Stabilization of organic polymers against free radicals

The invention relates to a method of dispersing carbon nanotubes (CNTs) in a continuous phase, especially in at least one dispersion medium, the carbon nanotubes, especially without prior pretreatment, being dispersed in a continuous phase, especially in at least one dispersion medium, in the presence of at least one dispersant (dispersing agent), with introduction of an energy input sufficient for dispersing, and also to the dispersions that are obtainable in this way, and to their use. With the method of the invention it is possible for the carbon nanotubes (CNTs) to be dispersed in high concentrations and with high storage stability.

Dispersion method

The invention relates to surface-modified nanoparticles composed of metal or semimetal oxides or hydroxides and having been reacted on their surface with a modifier, with formation of covalent bonds. The modifier is a polysiloxane. The invention also relates to a process for preparing the nanoparticles, to their use as fillers in coating materials, plastics, foams and nail varnishes, and to dispersions which comprise the nanoparticles.

Surface-modified nanoparticles comprising polysiloxane modifier, their preparation and use

An implant is suggested having a receptacle space for a therapeutic agent, which can leave the receptacle space through a permeable element. For exact dosage, an open-pore diffusion element is suggested as the permeable element, wherein the pore walls are chemically modified for control of the diffusion.

Implant with permeable element

The invention relates to an implant and a method for the production of an implant. The implant has a covering layer that is preferably made of aluminium oxide and provided with uniform cavities and separate openings on the surface side of the covering layer in order to receive a therapeutic agent which can be released according to requirements when the implant is in place.

Implant with cavities containing therapeutic agents

An MR-compatible surgical instrument is proposed. A simpler, more economic construction is made possible by the use of aluminum or an aluminum compound or alloy as base material, which is covered by a thin barrier layer of an inorganic oxide.

Surgical instrument

Red decorations on substrates which can undergo decorative baking, such as glass, porcelain, ceramic and metal, can be produced using nanoporous aluminium oxide membranes according to the invention, the nanopores of which contain ligand-stabilized gold clusters. The membrane is applied to the substrate followed by baking, resulting in formation of the red color. Alternatively, the membrane can be converted into a red membrane by thermolysis, after which the membrane is employed for production of the decoration. The membranes according to the invention can be obtained by bringing a nanoporous Al,O,membrane into contact with a solution of a ligand-stabilized gold cluster, in particular one of the formula Au,L,X,, wherein L is a phosphane ligand and X is an anion.

Growing community of inventors

Essen, Germany

Thomas Sawitowski