Nanofluor Gmbh

Solvay Sa

Bausch-lomb Incorporated

Solvay Fluor Gmbh

Humboldt-universitaet Zu Berlin

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Erhard Kemnitz

Johannes Eicher

Ercan Uenveren

Udo Gross

Dirk-Henning Menz

Karin Kobuch

Henry Ludwig

Hans Hoerauf

Stephan Ruediger

Stephan Rudiger

Anton Dimitrov

Stephan RÜDIGER

Uwe Reichel

The invention relates to a method for obtaining a magnesium fluoride (MgF) sol solution, comprising the steps of providing a magnesium alkoxide precursor in a non-aqueous solvent and adding 1.85 to 2.05 molar equivalents of non-aqueous hydrofluoric acid, characterized in that the reaction proceeds in the presence of a second magnesium fluoride precursor selected from the group of salts of strong, volatile acids, such as a chloride, bromide, iodide, nitrate or triflate of magnesium, or of a catalytic amount of a strong, volatile acid; and/or an additive non-magnesium fluoride precursor selected from the group of salts of strong, volatile acids, such as a chloride, bromide, iodide, nitrate or triflate of lithium, antimony, tin calcium, strontium, barium, aluminium, silicium, zirconium, titanium or zinc. The invention further relates to sol solutions, method of applying the sol solutions of the invention to surfaces as a coating, and to antireflective coatings obtained thereby.

Process for production of magnesium fluoride sol solutions from alkoxides comprising addition of magnesium salts

The invention relates to a method for obtaining a calcium fluoride (CaF) sol solution, comprising the steps of providing a calcium precursor in a first volume in a non-aqueous solvent, and adding, in a second volume, 1.85 to 2.05 molar equivalents of anhydrous hydrogen fluoride (n) per mole calcium precursor to said first volume, and/or a magnesium additive is added before or after said fluorination with hydrogen fluoride with additional 1.85 to 2.05 molar equivalents of anhydrous hydrogen fluoride (n) per mole magnesium additive. Additionally or alternatively at least one metal additive precursor is added before or after the fluorination with hydrogen fluoride wherein an additional amount of hydrogen fluoride (n) is present in the fluorination step. The invention further relates to sol solutions, method of applying the sol solutions of the invention to surfaces as a coating, and to antireflective coatings obtained thereby.

Calcium fluoride sol and optically active surface coatings derived thereof

The invention relates to a method for obtaining a magnesium fluoride (MgF) sol solution, comprising the steps of providing a magnesium alkoxide precursor in a non-aqueous solvent and adding 1.85 to 2.05 molar equivalents of non-aqueous hydrofluoric acid to said magnesium precursor, characterized in that the reaction proceeds in the presence of carbon dioxide. The invention further relates to sol solutions, method of applying the sol solutions of the invention to surfaces as a coating, and to antireflective coatings obtained thereby.

Process for the production of magnesium fluoride sol solutions from alkoxides comprising addition of carbon dioxide

The invention relates to a method for obtaining a magnesium fluoride (MgF) sol solution, comprising the steps of providing a magnesium alkoxide precursor in a non-aqueous solvent and adding 1.85 to 2.05 molar equivalents of non-aqueous hydrofluoric acid, characterized in that the reaction proceeds in the presence of a second magnesium fluoride precursor selected from the group of salts of strong, volatile acids, such as a chloride, bromide, iodide, nitrate or triflate of magnesium, or of a catalytic amount of a strong, volatile acid; and/or an additive non-magnesium fluoride precursor selected from the group of salts of strong, volatile acids, such as a chloride, bromide, iodide, nitrate or triflate of lithium, antimony, tin calcium, strontium, barium, aluminum, silicon, zirconium, titanium or zinc. The invention further relates to sol solutions, method of applying the sol solutions of the invention to surfaces as a coating, and to antireflective coatings obtained thereby.

A process for the selective dehydrofluorination of hydrochlorofluoroalkanes and novel hydrochlorofluoroalkenes is described wherein an effective amount of a catalytically active metal compound is applied which is selected from the group consisting of AlF, MgAlFand MgZrF, wherein x and y have, independently of one another, values in the range of from 0 to 0.33 and &#x3b4; has a value in the range of from 0 to 0.1. Certain hydrofluorochloroalkenes are also described, as well as their use as intermediates in chemical reactions.

Process for dehydrofluorinating hydrochlorofluoroalkanes and products obtained thereby

A process for the selective dehydrochlorination of a hydrochlorofluoroalkane by using chloride fluorides of Ba, Ca, or Sr as catalysts, wherein the hydrochlorofluoroalkane comprises a carbon atom or carbon atoms carrying at least one chlorine and at least one fluorine atom and further comprises at least one hydrogen atom on a carbon atom vicinal to the carbon atom or to the carbon atoms carrying the at least one chlorine and at least one fluorine atom.

Process for dehydrochlorination of hydrochlorofluoroalkanes

Halogenated alkenes, especially fluorinated alkenes can be prepared from halogenated and fluorinated alkanes, respectively, by dehydrohalogenation or dehydrofluorination in the presence of a high-surface metal fluoride or oxifluoride. Preferably, trifluoroethylene, pentafluoropropene, tetrafluorobutenes or trifluorobutadiene are prepared. Aluminum fluoride is highly suitable. The metal fluoride or oxifluoride can be applied supported on a carrier.

Preparation of halogen and hydrogen containing alkenes over metal fluoride catalysts

The present invention is related to a method for preparing an amorphous metal fluoride of the formula MFcomprising the steps of

Method for the preparation of high surface area metal fluorides

The invention relates to the utilization of a highly fluorinated oligomeric alkane as a therapeutic agent in ophthalmology, the alkane having the general formula [&#x2014;R(CH)CR&#x2014;CR&#x2014;], wherein Ris a linear or branched perfluorinated alkyl chain CFto CF, Rand Rare independently selected from the group consisting of H, CH, CHand CH, n is selected from the numbers 0, 1 and 2, and x is a number between 2 and 6, with a molar mass of at least 750. According to the invention, a pharmacological agent is provided that is used in ophthalmology and that causes little or no damage to the retina even when used over a long period.

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Berlin, Germany

Erhard Kemnitz