Patent application number | Description | Published |
20100176491 | Epitaxially Coated Silicon Wafer and Method For Producing Epitaxially Coated Silicon Wafers - Silicon wafers polished on their front sides are individually placed on a susceptor in an epitaxy reactor and firstly pretreated under a hydrogen atmosphere, and secondly with addition of an etching medium with a flow rate of 1.5-5 slm to the hydrogen atmosphere, the hydrogen flow rate being 1-100 slm in both steps, and subsequently epitaxially coated on the polished front side, and then removed from the reactor. In a second method, gas flows introduced into the reactor by injectors are distributed into outer and inner zones of the chamber, such that the inner zone gas flow acts on a wafer central region and the outer zone gas flow acts on a wafer edge region, the inner/outer distribution of the etching medium I/O=0-0.75. Silicon wafers having an epitaxial layer having global flatness value GBIR of 0.02-0.06 μm, relative to an edge exclusion of 2 mm are produced. | 07-15-2010 |
20100213168 | Method For Producing Epitaxially Coated Silicon Wafers - Epitaxially coated silicon wafers, are coated individually in an epitaxy reactor by a procedure in which a silicon wafer on a susceptor in the epitaxy reactor, is pretreated in a first step with a hydrogen flow rate of 1-100 slm and in a second step with hydrogen and an etching medium at a hydrogen flow rate of 1-100 slm, and an etching medium flow rate of 0.5-1.5 slm, at an average temperature of 950-1050° C., and is subsequently coated epitaxially, wherein, during the second pretreatment step, the power of heating elements is regulated such that there is a temperature difference of 5-30° C. between a radially symmetrical central region of the silicon wafer and an outer region of the silicon outside the central region. | 08-26-2010 |
20100294197 | Methods For Producing Epitaxially Coated Silicon Wafers - Epitaxially coated silicon wafers are produced by placing a wafer polished on its front side on a susceptor in an epitaxy reactor, first pretreating under a hydrogen atmosphere and in a second and a third step with addition of an etching medium to the hydrogen atmosphere, and subsequently providing an epitaxial layer, wherein during the first and second steps the hydrogen flow rate is 20-100 slm, during the second and third steps the flow rate of the etching medium is 0.5-1.5 slm, during the second step the average temperature in the reactor chamber is 950-1050° C., and the power of heating elements above and below the susceptor is regulated such that there is a temperature difference of 5-30° C. between a radially symmetrical region encompassing the central axis of and a part lying outside this region; and during the third step the hydrogen flow rate is reduced to 0.5-10 slm. In a second method, during the third pretreatment step the flow rate of the etching medium is increased to 1.5-5 slm, while the hydrogen flow rate does not have to be reduced. | 11-25-2010 |
Patent application number | Description | Published |
20110015301 | MIXTURES COMPRISING BRANCHED OLIGOMERIC OR POLYMERIC COMPOUNDS, AND PREPARATION AND USE THEREOF - Mixtures comprising
| 01-20-2011 |
20110178241 | PROCESS FOR PREPARING AN AQUEOUS POLYMER DISPERSION - Process for preparing an aqueous polymer dispersion with small polymer particles | 07-21-2011 |
20110195844 | PROCESS FOR SOLUBILIZING HYDROPHOBIC ACTIVE INGREDIENTS IN AQUEOUS MEDIUM - A process for solubilizing hydrophobic active ingredients in aqueous medium, which comprises using, as an assistant, at least one hyperbranched polymer (A) which is obtainable by reacting at least one hyperbranched polymeric compound having at least one primary or secondary amino group per molecule (a), selected from
| 08-11-2011 |
20110201745 | POLYMER DISPERSION WHICH COMPRISES A HIGHLY BRANCHED POLYCARBONATE HAVING UNSATURATED FATTY ACID GROUPS - The present invention relates to a polymer dispersion which comprises a highly branched polycarbonate having unsaturated fatty acid groups. The invention further relates to highly branched polycarbonates having groups deriving from unsaturated fatty acids, to a process for preparing such highly branched polycarbonates, and to the use of these highly branched polycarbonates for improving the curing properties of coating compositions based on an aqueous acrylate dispersion. | 08-18-2011 |
20110250438 | QUICK-DRYING COATING COMPOUNDS - The present invention relates to quick-drying two-component polyurethane coating compositions, to processes for preparing them, and to their use. | 10-13-2011 |
20110257329 | QUICK-DRYING COATING COMPOUNDS - The present invention relates to quick-drying two-component polyurethane coating compositions, to processes for preparing them, and to their use. | 10-20-2011 |
20120076843 | MICROCAPSULES HAVING HIGHLY BRANCHED POLYMERS AS CROSS-LINKING AGENTS - The present invention relates to microcapsules comprising a capsule core and a capsule wall, obtainable by a process comprising the free-radical polymerization of an oil-in-water emulsion which comprises the following constituents:
| 03-29-2012 |
20120095162 | HIGH-FUNCTIONALITY POLYETHEROLS AND PREPARATION AND USE THEREOF - The present invention relates to a process for preparing high-functionality polyethers having a Hazen color number of less than 500, by converting tris(hydroxyethyl) isocyanurate (THEIC) and one or more difunctional alcohols and/or modifying reagents with the aid of acidic catalysts. The present invention further relates to high-functionality polyethers having a color number of less than 10, obtainable by such a process, and to the use of these high-functionality polyethers as adhesion promoters, thixotropic agents, rheology modifiers of polymers, in printing inks, paints and coatings, or as units for preparation of polyaddition or polycondensation polymers. | 04-19-2012 |
20120238641 | DENDRITIC POLYUREA FOR SOLUBILIZING ACTIVE SUBSTANCES OF LOW SOLUBILITY - The present invention provides a composition comprising an amphiphile and an active ingredient whose solubility in water at 20° C. is not more than 10 g/L, wherein the amphiphile comprises a dendritic polyurea which is joined to at least one linear or comb-type polymer, and the joining is effected via a difunctional linker, if the repeat units of the linear polymer are composed of polymerized alkylene oxide. The invention also relates to an amphiphile comprising a dendritic polyurea and a process for preparing the amphiphile. | 09-20-2012 |
20120244095 | COMPOSITIONS CONTAINING POLYMERIC, IONIC COMPOUNDS COMPRISING IMIDAZOLIUM GROUPS - The present invention relates to compositions containing polymeric, ionic compounds comprising imidazolium groups. In particular, it relates to the use of polymeric, ionic compounds comprising imidazolium groups in personal care compositions and/or in biocide compositions. | 09-27-2012 |
20120264609 | HYPERBRANCHED POLYESTER HAVING A HYDROPHOBIC CORE FOR SOLUBILIZING ACTIVE INGREDIENTS OF LOW SOLUBILITY - The present invention provides a composition comprising an active ingredient with a maximum solubility in water at 20° C. of 10 g/l, and a hyperbranched polyester which is joined to a polar polymer which comprises a polycondensate or a polymer comprising ethylenically unsaturated monomers. The invention further relates to the hyperbranched polyester mentioned and to a process for preparation thereof. It further relates to the use of the hyperbranched polyester for solubilizing the active ingredient in aqueous compositions. | 10-18-2012 |
20120309626 | HYPERBRANCHED POLYESTER WITH A HYDROPHOBIC NUCLEUS FOR SOLUBILIZING POORLY SOLUBLE ACTIVE SUBSTANCES - The invention provides a composition comprising an active ingredient with a maximum solubility in water at 20° C. of 10 g/l, and a hyperbranched polyester based on a hydrophobic dicarboxylic acid and a trifunctional alcohol. The invention further relates to the hyperbranched polyester mentioned, to a process for preparation thereof and to the use thereof for solubilizing an active ingredient with a maximum solubility in water at 20° C. of 10 g/l in aqueous solutions. | 12-06-2012 |
20120309629 | Alkoxylated Hyperbranched Polycarbonates for Solubilizing Poorly Soluble Active Ingredients - The present invention provides a composition comprising an active ingredient whose solubility in water at 20° C. is not more than 10 g/L, and an amphiphile comprising an alkoxylated hyperbranched polycarbonate, wherein the polycarbonate comprises an alcohol which is a trifunctional or higher polyfunctional polyetherol based on a C | 12-06-2012 |
20120322714 | BRANCHED POLYESTERS WITH SULFONATE GROUPS - Branched polyesters with sulfonate groups obtainable by the reaction of the components A, B, optionally C and optionally D to give branched polyesters, where the component A is selected from the group of α,β-olefinically unsaturated dicarboxylic acids, and the component B is selected from the group of tri- or higher-functional alcohols, the optional component C is selected from the group of difunctional alcohols or of difunctional carboxylic acids without α,β-olefinically unsaturated bonds, the optional component D is selected from fatty acids or fatty alcohols, and the subsequent reaction of the resulting branched polyesters with hydrogen sulfite, where the molar amount of hydrogen sulfite is at most 95 mol %, based on the amount of α,β-olefinically unsaturated dicarboxylic acid. | 12-20-2012 |
20120322950 | BRANCHED POLYESTERS WITH SULFONATE GROUPS - Branched polyesters with sulfonate groups can be obtained by reacting components A, B, optionally C, and optionally D to yield branched polyesters, then reacting these branched polyesters with hydrogen sulfite. Component A is at least one α,β-olefinically unsaturated dicarboxylic acid, component B is at least one di- or higher-functional alcohol, optional component C is at least one di- or higher-functional carboxylic acid or hydroxycarboxylic acid without an α,β-olefinically unsaturated bond, and optional component D is at least one compound of formula CH | 12-20-2012 |
20130203898 | HYPERBRANCHED POLYMERS FOR MODIFYING THE TOUGHNESS OF CURED EPOXY RESIN SYSTEMS - The invention relates to a curable composition comprising one or more epoxy compounds, one or more amino hardeners, and an addition of one or more dendritic polymers selected from the group of the dendritic polyester polymers, where the dendritic polyester polymers can be produced through an Ax+By synthesis route. | 08-08-2013 |
20140027669 | Use of Branched Polyesters based on Citric Acid as Additive in Washing Compositions, Detergents or a Formulation for Water Treatment - The present invention relates to the use of branched polyesters obtainable by polycondensation of citric acid with at least one polyalcohol, and optionally with polycarboxylic acid component as additive in washing compositions, cleaners, detergents or a formulation for water treatment and to mixtures comprising such branched polyesters. The invention further relates to the use of hydrophobically modified branched polyesters, and to the method for cleaning, washing or water treatment using such branched polyesters. | 01-30-2014 |
20140065385 | HYPERBRANCHED POLYESTERS IN PRINTING INKS - The invention relates to multilayer materials for producing packaging comprising at least two films and also a layer which is printed with a packaging printing ink, said packaging printing ink comprising a certain hyperbranched polyester containing functional groups. The invention further relates to a packaging printing ink which comprises a certain hyperbranched polyester containing functional groups, and to the use of said printing ink for producing multilayer materials. | 03-06-2014 |
20140193619 | HYPERBRANCHED POLYESTERS IN PRINTING INKS - The invention relates to multilayer materials for producing packaging comprising at least two films and also a layer which is printed with a packaging printing ink, said packaging printing ink comprising a certain hyperbranched polyester containing functional groups. The invention further relates to a packaging printing ink which comprises a certain hyperbranched polyester containing functional groups, and to the use of said printing ink for producing multilayer materials. | 07-10-2014 |
20140341822 | Associative Thickeners Based on Hyperbranched Polymers - The present invention relates to associative polyurethane thickeners which comprise hyperbranched polymers in polymerized-in form, to the preparation of these thickeners, and to the use thereof, particularly in cosmetic preparations. | 11-20-2014 |
20150038668 | Branched Polyesters Based On Citric Acid, Their Preparation And Use - Branched polyesters obtained by polycondensation of citric acid with at least one poly-alcohol having at least two hydroxyl groups and, if desired, further polycarboxylic acid components, the molar ratio of citric acid to polyalcohol being 2.4:1 to 1:3. | 02-05-2015 |