Implant comprising composite powder with microstructured particles, obtained by a process in which large particles are bonded to small particles, wherein the large particles have a mean particle diameter in 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 are non-homogeneously spread within the large particles, the small particles comprise a calcium salt, the small particles have a mean particle size in the range from 0.01 m to 1.0 mm,
wherein the particles of the composite powder have a mean particle size d50 in the range from 10 m to less than 200 m and the fine fraction of the composite powder is less than 50 vol %.

Therefore, the subject matter of the invention further are implants obtained by selective laser sintering of a composition comprising a composite powder, especially as an implant for applications in the field of neuro, oral, maxillary, facial, ear, nose and throat surgery as well as of hand, foot, thorax, costal and shoulder surgery.

Core particles produced in situ or introduced as preformed core particles are coated with a layer of carbon. Non-carbon as well as some carbon-based core materials can be utilized. The resulting carbon coated particles can find applications in rubber products, for instance as reinforcement for tire components.

A method of preparing core-shell zinc oxide particles, includes: mixing a calcium-containing material with a first zinc ammonia complex salt solution; heating the thus obtained first mixture to remove ammonia, thereby obtaining a first intermediate product; mixing the first intermediate product with a second zinc ammonia complex salt solution to obtain a second mixture; heating the second mixture to remove ammonia, followed by conducting a drying process to obtain a second intermediate product; and calcining the second intermediate product to obtain the core-shell zinc oxide particles. A core-shell zinc oxide particle is prepared by the aforementioned method, and a composition for shielding ultraviolet light includes the core-shell zinc oxide particles.

The present disclosure relates to a silane treated composition, and a filled polymer composition comprising such silane treated composition and a polymer for improved mechanical properties; the treatment being in two steps, the first being a treatment with an aqueous silicate, followed by a second treatment with a silane-containing compound; optionally including treatment with an aliphatic carboxylic acid prior to the first treatment.

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 method of preparing core-shell zinc oxide particles, includes: mixing a calcium-containing material with a first zinc ammonia complex salt solution; heating the thus obtained first mixture to remove ammonia, thereby obtaining a first intermediate product; mixing the first intermediate product with a second zinc ammonia complex salt solution to obtain a second mixture; heating the second mixture to remove ammonia, followed by conducting a drying process to obtain a second intermediate product; and calcining the second intermediate product to obtain the core-shell zinc oxide particles. A core-shell zinc oxide particle is prepared by the aforementioned method, and a composition for shielding ultraviolet light includes the core-shell zinc oxide particles.

The invention provides surface-treated spherical calcium carbonate particles for use in cosmetics which comprise spherical calcium carbonate particles having a volume mean diameter in a range of 0.5 to 20 m, and having on their surfaces a hydrous silica coating, and further a silicone oil coating on the hydrous silica coating. The surface-treated spherical calcium carbonate particles for use in cosmetics are obtained by forming a hydrous silica coating on the surfaces of spherical calcium carbonate particles, and then by forming a silicone oil coating on the surfaces of the hydrous silica coating of the particles.

The present invention relates to precipitated calcium carbonate particles being at least partially in the form of nanofibers or nanochain like agglomerates, wherein the particles are at least partially coated with at least one coating agent, use of such precipitated calcium carbonate particles and a process for the manufacture of such precipitated calcium carbonate particles.

The present invention relates to a modified mineral-based filler comprising at least one alkaline earth metal carbonate-comprising material, and at least one water insoluble copper salt comprising the copper mineral malachite in an amount of at least 10 wt.-%, which covers at least partially the surface of the at least one alkaline earth metal carbonate-comprising material, and a method of producing the same.

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.