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Kropfgans, DE
Frank Kropfgans, Rheinfelden DE
| Patent application number | Description | Published |
|---|---|---|
| 20110150739 | METHOD FOR REMOVING BORON-CONTAINING IMPURITIES FROM HALOGEN SILANES AND APPARATUS FOR PERFORMING SAID METHOD - The invention relates to a method for reducing the content of boron-containing compounds in compositions I comprising at least one silicon halide, especially of chlorosilanes of the type HnSiCI4-n with n being equal to 0, 1, 2 or 3, by introducing a small amount of moisture into the composition I in a first step and separating the hydrolyzed boron- and/or silicon-containing compounds in a second step in such a way that a pre-purified composition II having a reduced boron content is obtained, wherein, in particular, the first and second steps can be run in at least one or more cycles. Also claimed is an apparatus for performing the method and an overall system into which this apparatus is integrated. | 06-23-2011 |
Frieder Kropfgans, Jena DE
| Patent application number | Description | Published |
|---|---|---|
| 20110084210 | Process for producing a particularly strong scintillation material, a crystal obtained by said process and uses thereof - A large-volume scintillation crystal affording a high scintillation yield and having high mechanical strength is obtained by growing a crystal from a melt containing strontium iodide, barium iodide or a mixture thereof and by doping with an activator. To this end, the melt is enclosed in a closed volume. Before and/or during the growing, the melt is in diffusion-permitting connection, via the enclosed volume, with an oxygen getter which sets a constant oxygen potential in the closed volume and the melt. Such a scintillation crystal is suitable for detecting UV-, gamma-, beta-, alpha- and/or positron radiation. | 04-14-2011 |
Frieder Kropfgans, Freiberg DE
| Patent application number | Description | Published |
|---|---|---|
| 20100006777 | PROCESS FOR PRODUCING DOPED GALLIUM ARSENIDE SUBSTRATE WAFERS HAVING LOW OPTICAL ABSORPTION COEFFICIENT - A process is disclosed for producing a doped gallium arsenide single crystal by melting a gallium arsenide starting material and subsequently solidifying the gallium arsenide melt, wherein the gallium arsenide melt contains an excess of gallium relative to the stoichiometric composition, and wherein it is provided for a boron concentration of at least 5×10 | 01-14-2010 |
Martin Kropfgans, Odenthal DE
| Patent application number | Description | Published |
|---|---|---|
| 20080210129 | Composition Containing Organopolysiloxanes, Method for the Production thereof and Use of the Same - Aqueous compositions comprising peroxides and polyorganopolysiloxanes useful for cleaning and disinfecting substrate surfaces. | 09-04-2008 |
| 20090076238 | Mono-or Poly-Quarternary Polysiloxanes - Monoquaternary or polyquaternary polysiloxanes are useful as surface finishing components, for example, in cosmetic formulas for skin and hair care, in polishes for the treatment of hard surfaces, in formulas for the drying of automobiles and other hard surfaces after machine washing, for the treatment of textiles and textile fibers, as separate softeners for textiles following the washing whereof with nonionic or anionic/non-ionic detergent formulas, or as softeners in formulas for textile washing based on non-ionic or anionic/non-ionic surfactants, whereby amino groups are used in the form of amines or amine salts as a function of pH value. | 03-19-2009 |
| 20090142293 | Polyammonium/Polysiloxane Copolymers - The invention relates to polyammonium/polysiloxane copolymers, methods for production and use thereof. | 06-04-2009 |
| 20100035790 | Branched Polyorganosiloxanes Modified With Aromatic Substances - The invention relates to fragrance-modified branched polyorganosiloxanes, methods for producing them and their use. | 02-11-2010 |
| 20100120657 | Reactive Polyorganosiloxanes Modified With Aromatic Substances - The invention relates to polyorganosiloxanes modified with fragrances and having reactive groups, to a method for coating a substrate using the polyorganosiloxanes according to the invention, use of the polyorganosiloxanes according to the invention for releasing the fragrance, to a method for producing the polyorganosiloxanes according to the invention as well as to their use, for example, in detergents or laundry detergents, in care products, in surface treatment agents and in cosmetics. | 05-13-2010 |
| 20100178266 | Process For The Manufacture Of Polyorganosiloxanes Comprising (C6-C60)-Alkylmethylsiloxy Groups And Dimethylsiloxy Groups - The present invention relates to novel processes for the manufacture of poly-organosiloxanes comprising (C6-C60)-alkylmethylsiloxy-groups and dimethyl-siloxy groups, polyorganosiloxanes obtainable by such processes, preferably aqueous emulsions comprising such polyorganosiloxanes and the use of such polyorganosiloxanes. | 07-15-2010 |