Abstract: The present invention discloses an apparatus for non-invasive heart monitoring comprising a pulse wave transit time (PWTT) determining device for determining a PWTT at predefined intervals, a first storing means for storing PWTT values resulting of the determining, a blood pressure measuring device for measuring a blood pressure close in time with the determining and a second storing means for storing blood pressure values resulting of the measuring. Furthermore, the apparatus comprises a cardiovascular dynamic change calculating device for calculating a relative change of the PWTT values and the blood pressure values as a function of time. The apparatus further comprises an alarm emitting device for emitting an alarm if the blood pressure values are substantially constant as a function of time and the PWTT values decrease as a function of time. A method for non-invasive heart monitoring is also disclosed.

Abstract: The invention relates to a laminate containing in the overlay plate-shape, monocrystalline particles of aluminum oxide having a corundum crystalline lattice.

Abstract: The invention relates to a process for producing a silane-modified nano-corundum, wherein nano-corundum agglomerates are disagglomerated in the presence of an organic solvent and simultaneously or afterwards treated by silane.

Abstract: Nanoparticles are claimed which consist of 50-99.99% by weight of alumina and 0.01-50% by weight of metal oxide of elements of main group I and II of the Periodic Table. These nanoparticles are obtained by drying a suspension of aluminum chlorohydrate, oxide formers and, if desired, crystallization nuclei, followed by calcining and comminution of the resultant agglomerates.

Abstract: Nanoparticles are claimed which consist of 50-99.99% by weight of alumina and 0.01-50% by weight of metal oxide of elements of main group I and II of the Periodic Table. These nanoparticles are obtained by drying a suspension of aluminum chlorohydrate, oxide formers and, if desired, crystallization nuclei, followed by calcining and comminution of the resultant agglomerates.

Abstract: The invention relates to laminates, which in the overlay preferably comprise metal oxide nanoparticles having a high percentage of ?-Al2O3. These nanoparticles are preferably treated with a coating agent or stabilizer.

Abstract: The invention relates to polycrystalline corundum fibers substantially consisting of corundum and an oxide of the elements of the main groups I or II of the periodic table. The crystallites of said corundum fibers have the following grain size distribution: 0 to 0.15 micrometers (34%), 0.15 to 0.29 micrometers (55%) and 0.29 to 0.43 micrometers (11%). Said corundum fibers are produced by mixing nuclei and an oxide former of the elements of the main groups I or II of the periodic table with an aluminium chlorohydrate, by adding a water-soluble polymer, then by spinning fibers from said mixture and by calcining said fibers at temperatures above 1100° C.

Abstract: The invention relates to coating materials containing silane-modified nanoparticles an organic binder and possibly additives, wherein the coating materials contain silane-modified nanoparticles which are obtainable by disaggregating agglomerates containing the particles in the presence of an organic solvent and simultaneous or afterwardly carrying out a silane treatment. Thus the silane-modified nanoparticles provide the coating materials and coatings with an improved scratch resistance.

Abstract: The invention relates to a process for producing a silane-modified nano-corundum, wherein nano-corundum agglomerates are disagglomerated in the presence of an organic solvent and simultaneously or afterwards treated by silane.

Abstract: The invention relates to a method for producing nanoparticles of aluminium spinels. According to said method, a salt of a metal, the oxide of which can form a spinel lattice with aluminium oxide, is added to an aqueous solution of aluminium chlorohydrate, the solution is then dried, and calcinated in less than 30 minutes, and the agglomerated material thus obtained is ground.

Abstract: The invention relates to mixed oxide nanoparticles from aluminum oxide or oxides of the elements of the first and second main group of the periodic system. These mixed oxide nanoparticles are surface-modified with a coating agent, preferably a silane or siloxane.

Abstract: The invention relates to coating materials containing mixed oxide nanoparticles, an organic binder and possibly additives, wherein said coating materials contain the nanoparticles consisting of 50-99.9% by weight aluminium oxide and 0.1-50 % by weight oxide of elements of the I or II main group of the periodic system. The mixed oxide nanoparticles can also have a surface modified by another coating agent, preferably silane or siloxane. The inventive mixed oxide nanoparticles provide coating materials or to coatings with an improved scratch resistance.

Abstract: Cosmetic or dermatological preparations which contain modified or unmodified nanocrystalline a-alumina having particle sizes of from 10 to 100 nm and d50 values of from 30 to 60 nm are described.

Abstract: A process is claimed for producing nanocrystalline ?-Al2O3 that is characterized in that nuclei are added to aluminum chlorohydrate, which is subjected to thermal treatment within less than 30 minutes, the resultant agglomerates being comminuted.

Abstract: Nanoparticles are claimed which consist of 50-99.99% by weight of alumina and 0.01-50% by weight of metal oxide of elements of main group I and II of the Periodic Table. These nanoparticles are obtained by drying a suspension of aluminum chlorohydrate, oxide formers and, if desired, crystallization nuclei, followed by calcining and comminution of the resultant agglomerates.

Abstract: Basic aluminum halide complexes obtained by reaction of aluminum metal with hydrohalic acid and an organic acid, where either the aluminum metal is dissolved in a mixture of hydrohalic acid and organic acid, or the aluminum metal is firstly dissolved in the hydrohalic acid and then the organic acid is added.

Abstract: Deodorants and antiperspirants comprising aluminum chlorohydrates according to the formula I Al2(OH)nClz??(I) where n is a number between 4.5 and 5.1 and z is a number between 1.5 and 0.9 and n+z is always 6, with an iron content of less than 20 ppm, preferably less than 10 ppm, based on the dry substance.

Abstract: Deodorants and antiperspirants comprising aluminum chlorohydrates according to the formula I